Source: http://www.freepatentsonline.com/y2006/0027230.html
Timestamp: 2019-06-18 12:54:44
Document Index: 247168114

Matched Legal Cases: ['art 100', 'art 100', 'art 100', 'art 100', 'art 100', 'art 100', 'art 100', 'art 100', 'art 300', 'art 400', 'art 300', 'art 400', 'art 300', 'art 100', 'art 300', 'art 300', 'art 300', 'art 400', 'art 300', 'art 400', 'art 400', 'art 400', 'art 400', 'art 400', 'art 400', 'art 400', 'art 400', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 500', 'art 500', 'art 500', 'art 300', 'art 500', 'art 683', 'art 683', 'art 683', 'art 801', 'art 801', 'art 803', 'art 801', 'art 801', 'art 805', 'art 683', 'art 805', 'art 683', 'art 100', 'art 100', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300', 'art 300']

Oven door of electric oven - LG Electronics Inc.
Oven door of electric oven
United States Patent Application 20060027230
An oven door of an electric oven is provided. The oven door includes a front panel, a front frame, a heat-insulating material, a transparent heat-reflecting glass, a support frame, and a back panel. The front panel constitutes a front appearance and the front frame is disposed at the back of the front panel. The heat-insulating material seated at the back of the front frame cuts off heat and the heat-reflecting glass is disposed at the back of the heat-insulating material to reflect heat of the inside. The support frame includes bent planes and slitting planes for supporting the heat-reflecting glass at the edge of the heat-reflecting glass and the back panel supports the support frame to the front side.
Jung, Eui Su (Changwon-si, KR)
11/198330
F24C15/04
Download PDF 20060027230 PDF help
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1. An oven door of an electric oven comprising: a front panel constituting a front appearance; a front frame disposed at a back of the front panel; a heat-insulating material seated at a back of the front frame, for cutting off heat; a heat-reflecting glass formed at a back of the heat-insulating material, for reflecting heat of an inside; a support frame having bent planes and slitting planes for supporting the heat-reflecting glass at an edge portion of the heat-reflecting glass; and a rear panel for supporting the support frame to a front side.
2. The oven door according to claim 1, wherein the support frame has two divided parts coupled with each other to form a quadrangular frame.
3. The oven door according to claim 2, wherein the two divided parts are the same in their shape.
4. The oven door according to claim 2, wherein the two divided parts support two continuous edges of the heat-reflecting glass.
5. The oven door according to claim 2, wherein one of the two divided parts supports an upper surface and one side of the heat-reflecting glass and the other of the two divided parts supports a lower surface and the other side of the heat-reflecting glass.
6. The oven door according to claim 2, wherein the two divided parts are coupled to each other using a screw.
7. The oven door according to claim 1, wherein the slitting planes and/or the bent planes are formed at positions of a front end and a rear end of the support frame, the positions facing each other.
8. The oven door according to claim 1, wherein the slitting planes are formed at a position disposed backward with respect to the bent planes.
9. The oven door according to claim 1, wherein the heat-reflecting glass is supported by the slitting planes and the bent planes.
10. The oven door according to claim 1, wherein the support frame is bent at a corner of the heat-reflecting glass to extend in two directions and the slitting planes and the bent planes are formed on the two extending portions.
11. The oven door according to claim 1, wherein two heat-reflecting glasses are fixed in the support frame.
12. An oven door of an electric oven comprising: a front frame for supporting a front panel; a transparent glass disposed at a backside of the front frame; a support frame having two same parts coupled to each other, for enclosing and supporting an edge of the glass; and a back panel for supporting the support frame to a front side.
13. The oven door according to claim 12, wherein the two parts support two planes extending from a pair of corners that faces each other.
14. The oven door according to claim 12, wherein the support frame comprises: a horizontal plane; and a bent plane and a slitting plane bent with respect to the horizontal plane so as to allow the glass to be fitted therebetween.
15. The oven door according to claim 14, wherein the slitting plane and the bent plane are provided in plural to the support frame so that a plurality of glasses are supported simultaneously.
16. The oven door according to claim 14, wherein one slitting plane is formed and two bent planes are formed so as to support one of edges of the glass.
17. The oven door according to claim 12, wherein after a first part of the two parts is seated, a second part is coupled with the first part, so that the glass is fixed therein.
18. An oven door of an electric oven comprising: a front panel constituting a front appearance; a front frame disposed at a back of the front panel; a transparent glass disposed at a back of the front frame, for cutting off heat; and support frames disposed on different front and back positions and having a bent plane and a slitting plane for supporting a front side and a backside of the glass, respectively.
19. The oven door according to claim 18, wherein the glass is supported in plural simultaneously.
20. The oven door according to claim 18, wherein the support frame comprises two parts and the glass is supported by fixing a second part of the two parts in a first part of the two part after the glass is seated on the first part.
The present invention relates to an electric oven, and more particularly, to an oven door that allows glass of the oven door to be fixed thereto simply and reliably. Further, the present invention relates to an oven door of an electric oven that allows a heat-reflecting glass provided to the oven door to be fixed by a bent plane formed on a frame.
An electric oven range is an apparatus for cooling food using heat emitted from heaters that use electricity as a heat source.
The electric oven range is a kind of kitchen apparatus integrally having an oven for cooking food in an inside of a closed space thereof using high temperature heat emitted from electric heaters and a range for cooking food by disposing a container containing food to be cooked on the upper surface thereof and directly heating the container. A drawer is installed at the lower portion of the oven in some cases so that cooked food may be stored therein.
Since the electric oven range heats the exterior and the interior of food to be cooked, simultaneously, it cooks food fast compared with a gas oven range. Also, since the electric oven range uses electricity as a heat source, not gas, it has high safety and excellent thermal efficiency, thus use of the electric oven range is expanding. The electric oven range is the same as the electric oven except that a range is further provided. Therefore, a door of the electric oven may be regarded in the same way as a door of the electric oven range.
The oven has a cavity provided to the inside thereof and a door for closing the front side of the cavity. The door has sealing members for preventing high heat in the inside of the cavity from being transferred to the outside and for maintaining the cavity in a closed state. The sealing members can be formed of transparent glass so as to allow a user to observe the inside of the cavity.
The glass is fixed in the frame by fitting the glass in the frame so that the edge of the glass may be enclosed by the frame on the whole and transforming a part of the frame. However, the above oven door of the electric oven range has the following problems.
As described above, the glass has an edge enclosed by the frame. To enclose the edge of the glass, three sides of the frame are formed first, the glass is fitted therein, and then the rest one side of the frame is coupled to the above three-sided frame using a bonding method such as welding to complete the frame. Therefore, much time is taken in coupling the parts, so that productivity is lowered.
Also, since the frame should be processed with the glass fixed on the inner periphery thereof, much processing time is consumed and there is possibility that the glass might be destroyed during the process.
Also, there is inconvenience that the heat-reflecting glass should be fixed to prevent detachment and movement of the heat-reflecting glass when the heat-reflecting glass is processed with the heat-reflecting glass fitted in the inner periphery of the frame.
Accordingly, the present invention is directed to an oven door of an electric oven range that substantially obviates one or more problems due to limitations and disadvantages of the related art.
An object of the present invention is to provide an oven door of an electric oven range capable of fixing a glass by providing a slitting part to a part of a frame provided within the oven door.
To achieve these objects and other advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, there is provided an oven door of an electric oven including: a front panel constituting a front appearance; a front frame disposed at a back of the front panel; a heat-insulating material seated at a back of the front frame, for cutting off heat; a heat-reflecting glass formed at a back of the heat-insulating material, for reflecting heat of an inside; a support frame having bent planes and slitting planes for supporting the heat-reflecting glass at an edge portion of the heat-reflecting glass; and a back panel for supporting the support frame to a front side.
In another aspect of the present invention, there is provided an oven door of an electric oven including: a front frame for supporting a front panel; a transparent glass disposed at a backside of the front frame; a support frame having two same parts coupled to each other, for enclosing and supporting an edge of the glass; and a back panel for supporting the support frame to a front side.
In a further another aspect of the present invention, there is provided an oven door of an electric oven including: a front panel constituting a front appearance; a front frame disposed at a back of the front panel; a transparent glass disposed at a back of the front frame, for cutting off heat; and support frames disposed on different front and back positions and having a bent plane and a slitting plane for supporting a front side and a backside of the glass, respectively.
According to the oven door of the electric oven having the above structure, an assembling time reduces and thus productivity improves and manufacturing costs reduce. Also, the manufacturing of the oven door is conveniently performed.
FIG. 1 is a perspective view of an electric oven range according to a preferred embodiment of the present invention;
FIG. 2 is a perspective view of an electric oven range when an oven door of the present invention is open;
FIG. 3 is an exploded perspective view of an oven door according to the present invention;
FIG. 4 is an exploded perspective view of a frame and a heat-reflecting glass, which are crucial elements of an electric oven range according to an embodiment of the present invention; and
FIG. 5 is a sectional view of FIG. 4 taken along a line I-I′.
FIG. 1 is a perspective view of an electric oven range according to a preferred embodiment of the present invention.
Referring to FIG. 1, a top burner part 100 is installed on the upper portion of the electric oven range. The top burner part 100 is a part for cooking general home food. That is, the top burner part 100 cooks food contained in the inside of a container using radiant heat directly transferred from a burner 120 to the container and/or conduction heat transferred from the container to the food. The top burner part 100 has an advantage that a state of food cooked in the container can be shown at a glance.
Also, an upper plate 110 formed of a ceramic material is provided on the top burner part 100. The upper plate 110 is formed to endure high temperature and shield the upper side of the top burner part 100. Burners 120 emitting heat using applied electricity for a heat source are provided under the upper plate 110. The burners 120 are formed of coils and formed in an about circle shape to directly transfer heat to a container containing food to be cooked. That is, when the burners 120 emit heat using the applied electricity, emitted radiant heat penetrates the upper plate 110 and the penetrated radiant heat is transferred to the container containing the food. At this point, since the heat is not transferred to the rest portion except a predetermined portion of the upper plate 110 provided to the upper portion of the burners 120, an unexpected injury of a user that might be generated by a user's inadvertence or residual heat left after cooking, is prevented.
A controller 200 for controlling an operation of the electric oven range is protruded upward at the back of the top burner part 100. The controller 200 is integrally formed with the backside of the electric oven range, a display 210 for displaying an operation state of the electric oven range, a cooking time, and a cooking temperature is formed at an about center, and manipulation knobs 220 for allowing a user to manipulate an operation of the electric oven range are protruded to the front at both sides of the display 210.
The manipulation knobs 220 are respectively formed so as to manipulate the burners 120 provided in the top burner part 100 and a manipulation knob 220 for allowing a user to manipulate an oven part 300 or a drawer part 400 is further formed. Therefore, the respective burners 120, the oven part 300, and the drawer part 400 can be manipulated independently.
The oven part 300 is installed under the top burner part 100. The oven part 300, which is intended for cooking roasted meat or large-sized food, has heaters for emitting heat using electricity applied from the outside for a heat source and cooks food using thermal energy of air in a closed space heated by the heat emitted from the heaters. That is, the oven part 300 cooks the food using the radiant heat transferred from the heated air, the conduction heat transferred from a heated iron plate, and convection heat generated due to convection of the heated air. The oven part 300 can cook large-sized food and maintain unique taste and flavor of food.
The drawer part 400 is installed under the oven part 300. The drawer part 400 stores cooked food in a warm state or warms up already cooked food and cooks simple food if necessary. Therefore, a separate heater may be provided on the inner upper surface or the inner lower surface of the drawer part 400, or both the inner upper and lower surfaces of the drawer part 400. The drawer part 400 stores the food in a warm state or warms up the food and also can cook the simple food as described above using the radiant heat directly transferred to the food by the heat emitted from the heater and the conduction heat transferred from the heated iron plate.
The drawer part 400 has an open upper surface of a rectangular parallelopiped shape and has, on the front side thereof, a drawer knob 410 subsiding in the inside so that a user may grasp the drawer part 400 when using it. The drawer part 400 is formed in a drawer shape to slide to the front to be opened when a user pulls the drawer part 400 and slide to the back to be closed when a user pushes it.
FIG. 2 is a perspective view of an electric oven range when an oven door of the present invention is open.
Referring to FIG. 2, the oven part 300 has an oven cavity 310 where food is cooked therein. That is, the oven part 300 has a rectangular parallelepiped shape whose front side is partially open and the front side of the oven part 300 is selectively shielded by an oven door 600 rotatably hinge-coupled at the front portion of the oven part 300 using a predetermined hinge.
A gasket 370 is formed at the front portion of the oven part 300 contacting the oven door 600 to prevent heat in the inside of the oven part 300 from leaking to the outside when the oven door 600 shields the front side of the oven part 300. A rear plate 320 constituting the rear side of the oven cavity 310, a side plate 330 constituting both sides of the oven cavity 310, a lower plate 340 constituting a lower surface, and an upper plate (not shown) constituting an upper surface are integrally formed or separately formed to constitute the appearance of the oven cavity 310.
The rear plate 320 constituting the rear side of the oven cavity 310 has a convection part 500 for forcibly convecting the heat emitted from the heaters for cooking the food in the inside of the oven cavity 310. The convection part 500 has a convection fan 520 therein and the heat in the inside of the oven cavity 310 is convected by rotation of the convection fan 520, so that the food in the oven cavity 310 can be uniformly cooked. The convection part 500 includes the convection fan 520 for convecting the inside air of the oven cavity 310 using rotation of the convection fan 520, a convection cover 510 protruded from the front surface of the rear plate 320 to enclose the front side and the lateral sides of the convection fan 520, and other parts.
Also, though not shown in the rear plate 320, a temperature sensor for sensing temperature of the inside of the oven part 300 and an oven lamp for providing light to the inside so that a user can observe the inside of the oven cavity 300 may be further provided.
Also, the heaters are formed in the inside of the oven cavity 300. In detail, an upper heater (not shown) for emitting heat to the inside space of the oven cavity 310 using applied electricity for a heat source is formed on the inner upper surface of the oven cavity 310. Also, a lower heater (not shown) for performing the same function as the upper heater is formed under the lower plate 340.
The food disposed in the inside of the oven cavity 310 is cooked by the heat emitted from the upper heater and the lower heater and the air that has provided thermal energy required for cooking the food is heated by the heaters and constantly convected in the inside of the oven cavity 310 by the convection part 500.
A rack 350 for supporting food or a container containing food is provided to the inside of the oven cavity 310 and a groove 360 for supporting the right and left side portions of the rack 350 is protruded from the side plate 330 toward the inside of the oven cavity 310. The groove 360 is provided in plural to form a plurality of grades so as to change the position of the rack 350 according to the height of the food or the container containing the food. In detail, the grooves 360 protruded with a predetermined width of the oven cavity 310 toward the inside thereof are formed on the side plate 330 constituting both sides of the oven cavity 310. The both side ends of the rack 350 are supported by the upper side of the grooves 360, so that food to be cooked or a container containing the food are disposed on the upper side of the rack 350.
FIG. 3 is an exploded perspective view of an oven door according to the present invention.
The oven door 600 will be described in detail with reference to FIG. 3. A front viewing window 620 and a front panel 630 constituting the front appearance of the oven door 600 are formed on the front side of the oven door 600. A door handle 610 is formed on the front upper portion of the front panel 630.
Also, a front frame 640 on which a heat-insulating material 650 is mounted is formed on the backside of the front panel 630. The central portion of the front frame 640 is punched and a layer directed inward is formed at the periphery of the punched central portion and the layer is stepped backward. The front viewing window 620 is seated on the layer formed along the periphery of the front central portion of the front frame 640.
In detail, the front side of the front frame 640 is stuck on the backside of the front panel 630 and the periphery of the front viewing window 620 is seated on and coupled with the layer stepped backward along the periphery of the front central portion of the front frame 640. A layer is formed inward along the periphery of the punched central portion at the backside of the front frame 640 and the layer is stepped to the front. The heat-insulating material 650 is seated on the layer. The heat-insulating material 650 is intended for cutting off heat so that the heat of the hot air transferred from the back of the oven door 600 may not be transferred to the front.
The heat-insulating material 650 can be a heat-insulating material formed of an inorganic material that can endure the inner temperature of the oven cavity 310 raised to high temperature.
Also, a support frame 680 for supporting and fixing a front heat-reflecting glass 660 as the first glass and a rear heat-reflecting glass 670 as the second glass is provided to the backside of the heat-insulating material 650. The heat-reflecting glasses 660 and 670 can be a tempered glass formed by heating glass to a temperature range of about 500-600° C. and quenching the glass to compression-transform the surface of the glass and tensile-transform the inside of the glass. The outer surface of the tempered glass is coated with a special pigment or a film that reflects heat. Therefore, the heat-reflecting glasses 660 and 670 have physical properties of high strength, high impact resistance, and excellent thermal endurance. Also, the outer surface of the heat-reflecting glasses 660 and 670 is coated with a heat-reflecting material to reflect the heat from the oven cavity 310 back to the inside of the oven cavity 310, so that heat leakage of the inside of the oven cavity 310 is prevented and thus the inside of the oven cavity 310 is kept warm.
A structure for fixing the heat-reflecting glasses 660 and 670 will be described below in detail.
FIG. 4 is an exploded perspective view of a frame and a heat-reflecting glass, which are crucial elements of an electric oven range according to an embodiment of the present invention and FIG. 5 is a sectional view of FIG. 4 taken along a line I-I′.
Referring to FIGS. 4 and 5, the heat-reflecting glasses 660 and 670 are supported and fixed by the support frame 680. The support frame 680 includes an upper support frame 681 for supporting and fixing the upper side and the left side of the heat-reflecting glasses 660 and 670 and a lower support frame 682 for supporting and fixing the lower side and the right side of the heat-reflecting glasses 660 and 670. In other words, one of the support frames 681 and 682 is formed to support two straight edges connected with each other around the corner portion of the heat-reflecting glasses 660 and 670 formed in a quadrangular shape.
The upper support frame 681 for supporting and fixing the upper side and the left side of the heat-reflecting glasses 660 and 670 will be described in detail. The upper support frame 681 is formed in an about “┌” shape. An upper right-coupling part 683 for coupling with the lower support frame 682 is protruded with a predetermined length at the right end of the upper support frame 681. Also, an upper right-coupling hole 684 through which a screw for coupling the upper right-coupling part 683 with the lower support frame 682 passes is punched at an about center of the upper right-coupling part 683.
Also, bent planes 686 bent downward are formed at the front/back edges of the upper support frame 681. In other words, the front left end part of the upper side of the upper support frame 681 is bent downward in an about “┌” shape when seen from the right of the drawing and the back right end part of the upper side of the upper support frame 681 is bent downward in an about “┐” shape when seen from the right of the drawing. Slitting planes 685 slit backward with a predetermined length and bent downward are formed at the central portion of the bent planes 686. In more detail, when the upper support frame 681 is viewed from the right of the drawing, the central portion of the front left end part is slit further to the right and bent downward and the central portion of the back right end part is slit further to the left and bent downward.
That is, a front slitting plane 685 is further slit to a predetermined depth to the back compared with the bent planes 686 and bent downward and a back slitting planes 685 is further slit to a predetermined depth to the front and bent downward.
At this point, since widths between the slitting planes 685 and the bent planes 686 correspond to the width of the heat-reflecting glasses 660 and 670, the heat-reflecting glasses 660 and 670 are fitted in, supported by, and fixed in the widths between the slitting planes 685 and the bent planes 686.
In other words, the upper side and the left side of the front heat-reflecting glass 660 is supported by being fitted in the width between the front slitting planes 685 and the front bent planes 686 formed at the upper side and the left side of the upper support frame 681. Also, an upper left-coupling part 801 for coupling with the lower support frame 682 is bent to the left at the lower left end of the upper support frame 681. An upper left-coupling hole 802 for coupling with the lower support frame 682 is punched in the center of the upper left-coupling part 801.
The lower side and the right side of the rear heat-reflecting glass 670 are fitted in the lower side and the right side of the lower support frame 682. The lower support frame 682 has an about “┘” shape when seen from the front. Front ends of the lower side and the right side of the lower support frame 682 have bent planes 809 bent upward and to the left, respectively. Slitting planes 808 are silt and bent at the central portion of the bent planes 809. That is, the slitting plane 808 formed at the front end of the lower side of the lower support frame 682 are slit backward and bent upward with a width that corresponds to the width of the front heat-reflecting glass 660, and another slitting plane 808 formed at the back end of the lower side of the lower support frame 682 is slit forward and bent upward with a width that corresponds to the width of the rear heat-reflecting glass 670.
In other words, the bent plane formed at the front end of the right side of the lower support frame 682 is bent to the left and the slitting plane 808 is slit backward and bent to the left with a width that corresponds to the width of the front heat-reflecting glass 660. Also, the bent plane formed at the back end of the right side of the support frame 682 is bent to the left and the slitting plane 808 is slit forward and bent to the left with a width that corresponds to the width of the rear heat-reflecting glass 670.
Therefore, the lower side and the right side of the front heat-reflecting glass 660 is supported by being fitted in the width between the slitting planes 808 and the bent planes 809 formed at the lower side and the right side of the lower support frame 682.
Also, a lower left-coupling part 803 for coupling with the upper left-coupling part 801 formed at the lower left end of the upper support frame 681 is formed with a size that corresponds to the size of the upper left-coupling part 801 at the left end on the lower side of the lower support frame 682. Also, a lower right-coupling part 805 for coupling with the upper right-coupling part 683 is bent to the right at the upper end on the right side of the lower support frame 682, the lower right-coupling part 805 having a size that corresponds to the size of the upper right-coupling part 683.
Therefore, the lower support frame 682 and the upper support frame 681 are the same in their shapes. That is, the upper support frame 681 becomes the lower support frame 682 when it is rotated by 180° clockwise or counterclockwise.
A state in which the heat-reflecting glass is coupled will be described with reference to FIG. 5 which is a sectional view of FIG. 4 taken along a line I-I′. The upper side of the front heat-reflecting glass 660 sticks on the backside of the upper support frame 681, and the upper portion of the right and left sides of the heat-reflecting glass 660 and 670 are received between the bent planes 686 and the slitting planes 685, so that the heat-reflecting glass 660 and 670 are supported therein. The lower side of the front heat-reflecting glass 660 sticks on the upper side of the lower support frame 682 and the lower portion of the right and left sides of the heat-reflecting glass 660 and 670 are received between the bent planes 809 and the central bent planes 808.
Also, the rear heat-reflecting glass 670 is supported in the same manner and the right and left sides of the heat-reflecting glasses 660 and 670 are supported in the same manner. When the upper support frame 681 and the lower support frame 682 are coupled with each other using a screw with the heat-reflecting glasses 660 and 670 supported by the upper support frame 681 and the lower support frame 682, the heat-reflecting glass 660 and 670 are fixed while they are supported by the support frame 680.
A ventilation hole for allowing external cool air to flow may be further formed in the upper side and the lower side of the support frame 680 so as to cool down the front heat-reflecting glass 660 and the rear heat-reflecting glass 670.
A central portion is punched and a rear panel 390 having a layer whose inner periphery is stepped backward is formed at the backside of the support frame 680. The support frame 680 is seated on the inner periphery of the layer stepped backward in the rear panel 690. Therefore, a user can check food being cooked in the inside of the oven cavity 310 through the front viewing window 620 and the heat-reflecting glasses 660 and 670.
Also, parts for allowing the backside of the front panel 630 to stick on the front side of the front frame 640 may be further formed. When the front panel 630 is coupled with the front frame 640, the heat-insulating material 650 is disposed thereon and the rear panel 690 on which the support frame 680 is seated is disposed on the backside of the heat-insulating material 650. That is, the front panel 630 is coupled with the rear panel 690, so that the coupling of the oven door 600 is completed.
Operation of the above-described oven door structure of the electric oven range will be described below.
First, operation of the top burner part 100 of the electric oven range will be described first. A user disposes the container containing food on the upper plate 110 and manipulates the manipulation knob 220 of the controller 200 to operate the burner 120.
When the burner 120 operates, heat emitted from the burner 120 heats the container containing food through the upper plate 110. As described above, the top burner part 100 cooks the food contained in the container using the radiant heat directly transferred from the burner 120 to the container containing the food and conduction heat transferred to the food from the heated container.
Next, operation of the oven part 300 of the electric oven range will be described. When a user grasps the door handle 610 to pull it to the front, the oven door 600 is rotated downward to open the front side of the oven part 300. When the front side of the oven part 300 is opened, a user disposes food to be cooked on the rack 350 provided to the inside of the oven cavity 310 and rotates the oven door 600 upward to close the oven part 300.
When the oven part 300 is closed, a user manipulates the manipulation knob 220 provided to the controller 200 to operate the heaters provided within the oven part 300. That is, when a user manipulates the manipulation knob 220 and the electricity is supplied to the oven part 300, the upper heater provided on the oven cavity 310 and the lower heater provided under the lower plate 340 emit heat using the supplied electricity for a heat source.
The temperature of the closed inside, i.e., the oven cavity of the oven part 300, is raised to a temperature set by a user by heat emitted from the heaters. When the temperature of the oven cavity 310 is raised, the food therein is cooked in a way desired by a user.
Also, when a power source is applied to the electric oven range, the convection motor provided to the rear side of the rear plate 320 rotates. When the convection motor rotates, the convection fan 520 rotates. The air in the inside of the oven cavity 310 is constantly convected by the rotation of the convection fan 520, so that the food disposed in the inside of the oven cavity 310 is cooked.
When the inner temperature of the oven cavity 310 rises to a high temperature, the heat is reflected by the rear heat-reflecting glass 670 provided to the inside of the oven door 600, so that the inside of the oven cavity 310 is kept warm. At this point, the rising surface temperature of the heat-reflecting glasses 660 and 670 maintains a constant temperature by exchanging heat using air flowing between the front heat-reflecting glass 660 and the rear heat-reflecting glass 670.
The scope of the present invention is not limited to the above-described embodiments and it will be obvious to those skilled in the art that various modifications can be made on the basis of the present invention.
For example, the number of the frames in which the glasses are supported is not necessarily two but may be three. Also, though a single frame may be formed to support both edges around the corner portion of the glasses and to fix the four sides thereof so as to perform the assembling, the frame may be divided into two members in viewpoint of production.
The heat-reflecting glass is not limited to the above-described type but a transparent glass as far as it is transparent can be applied. For an extreme example, the glass may not be transparent. At this point, the air in the inside dose not communicate with the air in the outside, of course.
In the electric oven range according to the present invention, the heat-reflecting glass is disposed between the slitting planes and the bent planes of the frame and fixed therebetween. At this point, the frame consists of the upper support frame and the lower support frame and the upper support frame and the lower support frame are the same in their shapes.
When the heat-reflecting glass is fixed using the siltting bent planes of the upper support frame and the lower support frame, the heat-reflecting glass is easily fixed, which reduces manufacturing time of parts. Accordingly, as the manufacturing time of parts reduces, productivity improves.
Also, since the one frame is coupled to fix the heat-reflecting glass with the heat-reflecting glass supported by the other frame, processing time of the frames reduces.
Also, as production of parts is easy, a defect rate occurring during the production of the parts reduces.
Also, since the upper support frame and the lower support frame are formed in the same shape, the upper and lower support frames can be manufactured using one mold, so that mold manufacturing costs reduce and thus manufacturing costs reduce. Also, since the manufacturing costs reduce and the productivity improves, production costs also reduce.
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