Disclosed herein is an oven with a doubly insulated lamp having increased lifetime. The oven may include a cooking chamber, a first insulating case mounted on one surface of the cooking chamber, a first case coupled to the first insulating case to form a first insulated space, a second insulating case having at least a part thereof disposed inside the first insulated space, a second case coupled to the second insulating case to form a second insulated space, and a lamp disposed inside the second insulated space to be doubly insulated from heat of the cooking chamber.

CROSS-REFERENCE TO RELATED APPLICATION

This application claims the benefit of Korean Patent Application No. 10-2016-0115371, filed on Sep. 8, 2016 in the Korean Intellectual Property Office, the disclosure of which is incorporated herein by reference.

BACKGROUND

Embodiments of the present disclosure relate to an oven, and more specifically, to an oven including a lamp having a double insulation structure.

2. Description of the Related Art

Generally, an oven is an apparatus for cooking food by being provided with a cooking chamber, a heating device configured to apply heat to the cooking chamber, and a circulating fan configured to circulate the heat generated by the heating device in the cooking chamber.

An oven is an apparatus for cooking food by sealing and heating the food, and can be generally classified into an electric oven, a gas oven, and a microwave oven according to a heat source. The electric oven uses an electric heater as a heat source, and the gas oven and the microwave oven use gas heat and frictional heat from water molecules due to a high frequency as heat sources, respectively.

A state of food inside a cooking chamber need be checked during a cooking process using an oven. Thus, a lamp is provided at the cooking chamber or a door for opening or closing the cooking chamber.

The lamp can be heated by heat of the cooking chamber. When the lamp overheats, a lifetime of the lamp can be decreased.

SUMMARY

Therefore, it is an aspect of the present disclosure to provide an oven including a lamp having a double insulation structure.

It is another aspect of the present disclosure to provide an oven configured to prevent a lamp disposed adjacent to a cooking chamber from being overheated.

It is still another aspect of the present disclosure to provide an oven in which a lifetime of a lamp configured to illuminate an inside of a cooking chamber is increased.

In accordance with one aspect of the present disclosure, an oven includes a cooking chamber, a first insulating case mounted on one surface of the cooking chamber, a first case coupled to the first insulating case to form a first insulated space, a second insulating case having at least a part thereof disposed inside the first insulated space, a second case coupled to the second insulating case to form a second insulated space, and a lamp disposed inside the second insulated space to be doubly insulated from heat of the cooking chamber.

The first case may include a through hole through which a part of the second case and a part of the second insulating case pass.

The first case may further include a location determination groove formed outwardly in a radial direction of the through hole from one side of the through hole.

The second case may include a location determination protrusion formed to protrude outward in the radial direction from a side surface of the second case to correspond to the location determination groove.

The first case may include an elastic piece provided on a side surface thereof and the first insulating case may include a hooking groove provided to catch the elastic piece.

The first insulating case may include a boss part inserted into the first case.

The oven may further include a ring member provided between the first case and the second insulating case to minimize a gap between the first case and the second insulating case.

Each of the first case and the second case may include an outlet to discharge heat.

The outlet is formed by at least a part of each of the first case and the second case being bent.

The second insulating case may include a screw and the second case may include a coupling protrusion provided to be screw-coupled to the screw.

The coupling protrusion may be disposed in a spiral form along an inner circumference surface of the second case.

Each of the first insulating case and the second insulating case may include a glass material.

The lamp may include a halogen lamp.

The first insulating case may be mounted on an upper surface of the cooking chamber.

The first insulating case may be mounted on a side surface of the cooking chamber.

In accordance with another aspect of the present disclosure, a lamp assembly includes a first insulating case, a first case coupled to the first insulating case to form a first insulated space, a second insulating case having at least a part thereof disposed inside the first insulated space, a second case coupled to the second insulating case to form a second insulated space and a lamp disposed inside the second insulated space to be doubly insulated from external heat.

The second insulating case may include a screw and the second case may include a location determination protrusion configured to protrude outward in a radial direction from a side surface of the second case.

The first case may include a through hole through which the screw passes, and a location determination groove formed outwardly in a radial direction of the through hole from one side of the through hole to correspond to the location determination protrusion.

The lamp assembly may further include a ring member into which the screw is inserted to minimize a gap between the through hole and the second insulating case.

In accordance with still another aspect of the present disclosure, an oven includes a body having a cooking chamber, a lamp disposed inside the body, a first insulating case having at least a part thereof disposed inside the cooking chamber and configured to primarily shield the lamp from heat of the cooking chamber and a second insulating case having at least a part thereof disposed inside the first insulating case and configured to accommodate the lamp to secondarily shield the lamp from the heat of the cooking chamber.

DETAILED DESCRIPTION

FIG. 1is a perspective view of an oven in accordance with one embodiment of the present disclosure.FIG. 2is a view illustrating a state in which a door is opened in the oven in accordance with one embodiment of the present disclosure, andFIG. 3is a side cross-sectional view of the oven in accordance with one embodiment of the present disclosure. Further,FIG. 4is an enlarged view of part A inFIG. 3.

An oven1may include a housing10forming an appearance thereof, a cooking chamber20located inside the housing10, and a cooktop30, which is provided on an upper end of oven1to have a container including a food placed thereon and is capable of heating the container. Alternatively, the oven1may not include a cooktop on an upper surface thereof.

The housing10may include a front panel11forming a front surface of the housing10, a side panel13forming a side surface of the housing10, and a rear panel14forming a rear surface of the housing10.

The cooking chamber20is provided inside the housing10in a box type and a front surface thereof may be open so that a food may be placed therein and taken therefrom. An opening12provided to correspond to the cooking chamber20whose front surface is open may be provided in the front panel11. The open front surface of the cooking chamber20may be opened and closed by a door unit40.

A plurality of supports21may be provided inside the cooking chamber20. Racks23on which the food may be placed may be mounted on the plurality of supports21. The plurality of supports21may be provided to protrude from a left side wall and a right side wall of the cooking chamber20.

Dividers (not shown) capable of dividing the cooking chamber20may be detachably mounted on the plurality of supports21. Specifically, the dividers (not shown) are mounted laterally in the cooking chamber20and may divide the cooking chamber20into a plurality of cooking chambers.

The plurality of cooking chambers may have the same size or different sizes. The dividers (not shown) may include an insulating material to insulate each of the cooking chambers20, thereby a space of the cooking chamber20can be utilized in various ways according to a purpose of a user.

A heater22configured to heat the food may be provided in the cooking chamber20. In accordance with the embodiment, the heater22may be an electric heater including an electric resistor. Alternatively, unlike the embodiment, the heater22may be a gas heater configured to generate heat by combusting gas. That is, the oven1in accordance with the embodiment of the present disclosure may include an electric oven and a gas oven.

A circulating fan25configured to circulate air in the cooking chamber20so that the food is uniformly heated and a circulating motor24configured to drive the circulating fan25may be provided in the rear of the cooking chamber20. A fan cover26configured to cover the circulating fan25may be provided in front of the circulating fan25, and through holes27may be formed in the fan cover26so that air flows through the through holes27.

The door unit40may be hinge-coupled to a lower side of the housing10to be rotatable with respect to the housing10. Alternatively, although not shown, the door unit40may be hinge-coupled to a left side or a right side of the housing10.

The door unit40may include a transparent portion42made of a transparent material such as a glass or the like so that a cooking process of the cooking food inside the cooking chamber20may be externally visible. The door unit40may include a front door frame41aand a rear door frame41bprovided along edges of the transparent portion42. The front door frame41amay include a front frame opening41aaat which the transparent portion42is formed, and the rear door frame41bmay include a rear frame opening41bb.

A plurality of glass members43may be provided in the door unit40so that an inside of the cooking chamber20may be visible. The transparent portion42may be made of a transparent material other than the plurality of glass members43. The plurality of glass members43may be disposed to be separated in frontward and rearward directions.

A door suction port44through which air may be introduced into the door unit40may be provided in a lower end of the door unit40. External air introduced into the lower end of the door unit40may be heat-exchanged with heat transmitted from the cooking chamber20while moving toward an upper side of the door unit40and then be discharged through a door discharge port45provided in the rear door frame41blocated in the rear of the door unit40. Through this configuration, the present disclosure may cool an internal heat of the door unit40due to the circulation of air.

A handle50graspable by a user so that the door may be easily opened and closed may be provided on an upper end of a front surface of the door unit40. However, when the door unit40is hinge-coupled to the left side or the right side of the housing, the handle50may be provided on a right side or a left side of the front surface of the door unit40, which corresponds to the side of the hinge-coupled door.

The handle50may protrude forward by a predetermined distance from the front surface of the door unit40. That is, handle50may include a pair of handle supporters51extending forward from the front surface of the door unit40, and a handle extender52connecting the pair of handle supporters51.

A display module60configured to display various kinds of operational information of the oven1and allow the user to input operational commands may be provided at an upper portion of a front surface of the front panel11. The display module60may be mounted on an electronic device chamber cover15.

Also, a manipulator61provided to additionally operate the oven1may be provided on the electronic device chamber cover15.

The oven1includes an electronic device chamber70configured to accommodate an electronic device configured to control operations of various components such as the display module60and the like. The electronic device chamber70is provided above the cooking chamber20. An insulating member71configured to insulate the electronic device chamber70and the cooking chamber20may be provided between the electronic device chamber70and the cooking chamber20so that transmission of the heat of the cooking chamber20to the electronic device chamber70is prevented.

Also, the insulating member71may be provided to cover an entire outside of the cooking chamber20in addition to the electronic device chamber70and the cooking chamber20so that the heat of the cooking chamber20is not transmitted outside the oven1.

A lamp assembly100may be provided above the cooking chamber20. The lamp assembly100may illuminate an inside of the cooking chamber20so that the user may check a state of the food inside the cooking chamber20. In accordance with one embodiment of the present disclosure, a pair of lamp assemblies100may be provided. However, since the number of the lamp assembly100is not limited, the number of the lamp assembly100may be more than or less than two.

As illustrated inFIGS. 3 and 4, the lamp assembly100may be disposed inside the housing10. At least a part of the lamp assembly100may be exposed on an upper surface of the cooking chamber20.

The lamp assembly100may be disposed adjacent to the heater22. In one embodiment of the present disclosure, the heater22may be disposed under the lamp assembly100. As the heater22releases high-temperature heat when the heater22is operated, a temperature of the lamp assembly100disposed adjacent to the heater22may be increased. Meanwhile, even when the lamp assembly100is not disposed adjacent to the heater22in another embodiment of the present disclosure, the inside of the cooking chamber20may maintain a high-temperature state to cook the food. At this time, the temperature of the lamp assembly100may also be gradually increased.

When the temperature of the lamp assembly100is increased to a predetermined temperature or higher, a lamp160may not be optimally operated.

That is, when the lamp160is overheated by heat of the cooking chamber20, a lifetime thereof may be decreased. Accordingly, a temperature of the lamp160need be decreased.

In accordance with an aspect of the present disclosure, as illustrated inFIG. 4, the lamp160may be doubly insulated to decrease a temperature thereof exposed to a high-temperature state. Specifically, the heat of the cooking chamber20may be primarily blocked by a first insulating case110. Heat of a first insulated space101discharged by the first insulating case110may be secondarily blocked by a second insulating case120. Accordingly, the lamp160disposed inside a second insulated space102may be doubly insulated by the first insulating case110and the second insulating case120. Due to the double insulation structure, overheating of the lamp160of the embodiment of the present disclosure may be prevented such that a lifetime of the lamp160may be increased.

FIG. 5is a view illustrating a lamp assembly in the oven in accordance with one embodiment of the present disclosure.FIG. 6is an exploded perspective view of the lamp assembly illustrated inFIG. 5.FIG. 7is an enlarged view illustrating a first insulating case and a first case in accordance with one embodiment of the present disclosure, andFIG. 8is an enlarged view illustrating a second insulating case, a second case, and a ring member.FIG. 9is a side view of the second case in the oven in accordance with one embodiment of the present disclosure.

As illustrated inFIGS. 5 to 9, the lamp assembly100may include the first insulating case110, the second insulating case120, a ring member130, a first case140, a second case150, the lamp160, and a socket170.

The first insulating case110may include a bottom part111and a boss part112. The bottom part111may be formed in an approximately rectangular shape. The boss part112may be formed to protrude upward from one surface of the bottom part111. The boss part112may be formed along edges of the bottom part111, and edges of the boss part112may be spaced a predetermined distance from the edges of the bottom part111. That is, a circumference of the boss part112may be formed to be smaller than the border of the bottom part111.

A perimeter of an opening20a(seeFIG. 4) formed in the cooking chamber20may be formed to be larger than a perimeter of the boss part112and may be formed to be smaller than a perimeter of the bottom part111. The boss part112may be inserted into the opening20a. Since the bottom part111blocks a gap between the opening20aand the boss part112, a discharge of the heat of the cooking chamber20through the opening20amay be prevented.

The boss part112may include a front surface112a, side surfaces112band112d, and a rear surface112c. A hooking groove113may be provided in each of the side surfaces112band112dof the boss part112. The hooking groove113may be formed by being recessed in inward directions of the side surfaces112band112d. An elastic piece141of the first case140may be caught on the hooking groove113.

The first case140may include the elastic piece141so that the first insulating case110is easily coupled to and separated from the first case140. The elastic piece141may be formed by bending parts of both side surfaces of the first case140inward. The elastic piece141may have elasticity. Since the elastic piece141may be integrally formed with the first case140, the first case140may be made of a material having elasticity. For example, the first case140may include a metal material.

As the elastic piece141is caught on the hooking groove113of the first insulating case110, the first case140may be coupled to the first insulating case110without a separate coupling member. Also, the first insulating case110may be easily separated from the first case140using the elasticity of the elastic piece141.

The elastic piece141may be provided on both of the side surfaces of the first case140to correspond to the hooking groove113. Accordingly, locations and the number of elastic pieces141may be changed according to locations and the number of hooking grooves113.

The first case140may include a first outlet143so that heat of the first case140is discharged outwardly. The first outlet143may be provided in one surface of the first case140. The first outlet143may be provided by cutting a part of the first case140and bending the part outward. In accordance with one embodiment of the present disclosure, the first outlet143may be formed in a front surface of first case140.

The first case140may include a through hole142. The through hole142may be formed by cutting a part of an upper surface of the first case140. The through hole142may be provided in a circle shape.

The first case140may further include a location determination groove142aformed to extend outward in a radial direction of the through hole142. The second insulating case120and the second case150may be inserted into the through hole142. Also, a location determination protrusion151of the second case150may be inserted into the location determination groove142aof the first case140. The above will be described in detail below.

The second insulating case120may be provided in an approximately cylindrical shape. The second insulating case120may include a body121and a screw122. The screw122may be provided at an upper end of the body121.

A diameter of the body121may be provided to be larger than a diameter of the screw122. Also, the diameter of the body121may be provided to be larger than a diameter of the through hole142, and the diameter of the screw122may be provided to be smaller than the diameter of the through hole142, thereby the screw122may pass through the through hole142while the body121may not pass therethrough and is caught on the through hole142.

The second case150may be provided in a cylindrical shape with open upper and lower surfaces. The second case150may include the location determination protrusion151, a second outlet152, and a coupling protrusion153.

The location determination protrusion151may be formed to protrude outward in a radial direction of the second case150. The location determination protrusion151may be provided to correspond to the location determination groove142ato be inserted thereinto. As the location determination protrusion151is inserted into the location determination groove142a, the second case150may not rotate against the first case140. Also, the second case150may be coupled to the first case140in a predetermined direction. That is, the second case150may be mounted at a specific location when the second case150is mounted on the first case140.

The second outlet152may be provided in a side surface of the second case150. The second outlet152may be provided by cutting a part of the side surface of the second case150and bending the part outward. Since the second outlet152is provided, heat of the second case150may be discharged through the second outlet152. In accordance with one embodiment of the present disclosure, a plurality of second outlets152may be provided and the second outlets152may be disposed to be separated along a circumferential direction of the second case150.

The second case150may include the coupling protrusion153. The coupling protrusion153may protrude inside the second case150from an inner circumferential surface of the second case150. A plurality of coupling protrusions153may be provided and the protrusions153may be disposed to be separated along the inner circumferential surface of the second case150.

FIG. 9is a view illustrating a disposition structure of the coupling protrusion153in a side view of the second case.

As illustrated inFIG. 9, the coupling protrusion153may be disposed in a spiral form along the inner circumferential surface of the second case150. The second case150may be screw-coupled to the second insulating case120through a disposition of the coupling protrusion153. That is, since the coupling protrusion153is screw-coupled to the screw122, the second case150may be coupled to the second insulating case120. Meanwhile, a user may couple the second insulating case120to the second case150or may separate the second insulating case120from the second case150by easily rotating the second insulating case120without a separate coupling member.

The lamp assembly100may include the ring member130.

At least a part of the second insulating case120may be disposed inside the through hole142of the first case140, and the remaining parts thereof may be disposed outside the through hole142. That is, the body121may be disposed inside the first case140, and the screw122may pass through the through hole142and be disposed outside the first case140. At this time, a gap may be formed between the through hole142and the screw122. The ring member130may be provided between the first case140and the second insulating case120so that the gap is minimized and the first case140is stably coupled to the second insulating case120.

In accordance with one embodiment of the present disclosure, the ring member130may include a first ring member131, a second ring member132, and a third ring member133. The first ring member131, the second ring member132, and the third ring member133may be sequentially stacked. Since a plurality of ring members130are provided, a relatively large gap may be reduced. However, the embodiment is not limited thereto and one ring member may also be provided.

The lamp assembly100may include the socket170and the lamp160mounted in the socket170. Power may be supplied to the lamp160via the socket170. The socket170may be inserted into and coupled to an upper portion of the second case150. Accordingly, the socket170may be coupled to the second case150without a coupling member or may be separated from the second case150. Likewise, the lamp160may be coupled to the socket170without a coupling member or may be separated from the socket170. That is, in accordance with one aspect of the present disclosure, a user does not require a separate coupling member when assembling or disassembling a lamp assembly. That is, the user may easily replace the lamp.

In accordance with one embodiment of the present disclosure, the lamp160may include a halogen lamp. As a temperature inside the cooking chamber20is very high, a halogen lamp having high temperature resistance may be used in order to be operated at a high temperature.

The first insulating case110and the second insulating case120may be made to be transparent so that light emitted from the lamp160may be transmitted to the cooking chamber20. For example, the first insulating case110and the second insulating case120may be provided with a glass material. However, the material of the cases is not limited to the glass material, and the first insulating case110and the second insulating case120may be made not to be transparent as long as the first insulating case110and the second insulating case120are able to transmit light emitted from the lamp.

Hereinafter, a process of changing the lamp in the oven in accordance with one embodiment of the present disclosure will be described.

As illustrated inFIG. 10, the socket170may be mounted inside the housing10. The second case150may be insertion-coupled to a lower portion of the socket170. A lower end of the second case150may pass through the through hole142of the first case140and be disposed inside the first case140. The socket170, the second case150and the first case140may be fixed inside a housing.

When a user want to change the lamp160, the user may separate the first insulating case110from the first case140without a separate coupling member. Also, the second insulating case120disposed inside the first insulating case110may be separated from the second case150by being rotated. Since the lamp160is disposed inside the second insulating case120, the lamp160may be easily replaced by performing the above process in reverse after the lamp160is replaced.

FIG. 11is a view illustrating a state in which a door is opened in an oven in accordance with another embodiment of the present disclosure.

As illustrated inFIG. 11, lamp assemblies100may be disposed on both side surfaces of a cooking chamber20. That is, according to various embodiments of the present disclosure, the lamp assembly100may be disposed on an upper surface or the both of the side surfaces of the cooking chamber20, and although not shown in the drawings, the lamp assembly100may also be disposed on a lower surface of the cooking chamber20.

As is apparent from the above description, a lamp whose lifetime is increased and an oven including the lamp can be provided.

In accordance with an aspect of the present disclosure, a lamp having a double insulation structure and an oven including the lamp can be provided.