WO2021025276A1

WO2021025276A1 - Oven

Info

Publication number: WO2021025276A1
Application number: PCT/KR2020/007388
Authority: WO
Inventors: 이상진; 김상진; 권명근; 서응렬
Original assignee: 삼성전자주식회사
Priority date: 2019-08-05
Filing date: 2020-06-08
Publication date: 2021-02-11
Also published as: KR20210016771A

Abstract

An oven comprises: a body; a cooking chamber disposed inside the body and having an open front surface; a door for opening or closing the cooking chamber; a door duct coupled to the top of the door and including a discharge hole for discharging air inside the door to the outside of the door in a direction opposite to the front surface of the body; a front panel disposed in the rear side of the door duct and formed on the front surface of the body, which includes a suction hole for suctioning the air discharged from the discharge hole; a cooling fan for discharging the air suctioned through the suction hole to the outside of the body; a discharge duct for guiding the suctioned air to be discharged to the outside of the body by the cooling fan; and a suction duct formed under the discharge duct so as to guide the air suctioned through the suction hole to flow into the cooling fan.

Description

Oven

The present invention relates to an oven having a cooling structure capable of improving energy efficiency while lowering a surface temperature outside a door.

In general, an oven is a device that cooks food by having a cooking chamber, a heating device that applies heat to the cooking chamber, and a circulation fan that circulates heat generated by the heating device in the cooking chamber.

Ovens are devices for cooking by sealing and heating food. In general, ovens can be classified into electric, gas, and electronic types according to their heat sources.

Electric ovens use an electric heater as a heat source, and gas ovens and microwave ovens use heat from gas and frictional heat from water molecules due to high frequency as heat sources, respectively.

In general, an oven includes a main body that forms an exterior and has a cooking chamber in which food to be cooked is input, and a door installed in the front of the main body to selectively open and close the cooking chamber.

The door is composed of a plurality of glasses to prevent heat inside the cooking compartment from being radiated to the outside. Since the temperature of the door rises due to heat inside the cooking compartment, the door is provided with an air intake port through which outside air is sucked in to prevent the temperature of the door from rising, and the air sucked through the air inlet is provided between a plurality of glasses. It is discharged to the outside of the door after reducing the temperature of the air by circulating the air flow path.

In general, in order to lower the surface temperature of the door, the hot air inside the door is discharged to the outside of the door by a cooling structure using a venturi effect, or the hot air inside the door is forcibly sucked by a cooling fan to the outside of the door. To discharge.

When the high-temperature air inside the door is discharged to the outside of the door by the cooling structure using the Venturi effect, the capacity of the cooking compartment can be secured and the cooling structure is simple to reduce the material cost, but it is difficult to secure consistent performance. There is a problem that it is difficult to lower the surface temperature.

In addition, when hot air inside the door is forcibly inhaled by the cooling fan and discharged to the outside of the door, consistent performance can be secured and the surface temperature outside the door can be kept low, but a relatively high material cost is required.

In particular, the oven needs a cooling structure capable of maintaining a low surface temperature outside the door in the case of the cleaning mode because the temperature inside the cooking compartment increases significantly in the case of the cleaning mode than in the case of the general cooking mode.

One aspect of the present invention simultaneously applies a cooling structure for discharging hot air inside the door to the outside of the door using a venturi effect and a cooling structure for discharging hot air inside the door forcibly by a cooling fan to the outside of the door. Provide an oven that you can do.

In addition, an aspect of the present invention provides an oven capable of selectively opening and closing a suction passage according to a usage mode of the oven.

The oven according to an embodiment of the present invention includes a main body, a cooking chamber provided to have a front surface open inside the main body, a door for opening and closing the cooking chamber, and coupled to an upper portion of the door, and directs air inside the door in a direction opposite to the front of the main body. A door duct including a discharge hole for discharging to the outside of the door of the door, a front panel disposed at the rear of the door duct, and a front panel formed on the front of the main body including a suction hole through which air discharged through the discharge hole is sucked, the suction hole A cooling fan for discharging the air sucked through the body to the outside of the body, a discharge duct for guiding the air sucked by the cooling fan to be discharged to the outside of the main body, and the air sucked through the suction hole formed below the discharge duct It includes a suction duct that guides suction through the cooling fan.

The size of the discharge hole may be the same as or larger than the size of the suction hole.

The front panel may be provided such that a gap is formed between the door duct.

It may include a discharge part formed between the door duct and the electrical equipment chamber to communicate with the discharge duct so that the air guided by the discharge duct is discharged to the outside of the body.

The cooling fan may suck the air sucked into the suction hole and the air that has cooled the interior of the electrical equipment chamber and discharged it to the discharge part through the discharge duct.

The gap communicates with the discharge part, and a low pressure region is generated in the discharge part by the flow velocity of air discharged to the discharge part, so that some of the hot air inside the door is discharged to the discharge part through the discharge hole and the gap. I can.

The upper end of the door duct may be located between the suction hole and the outlet of the discharge duct.

It may include an opening/closing device that selectively opens and closes the suction hole so that the air discharged through the discharge hole is sucked into the suction hole or the suction is prevented.

The opening and closing device includes a pair of support portions provided on the front panel, a rotation shaft rotatably supported by the pair of support portions, a cover provided to be rotated on the rotation shaft together with the rotation shaft to open and close the suction hole, and the A cover switch for operating the cover by rotating a rotating shaft, and a rotating part provided on the rotating shaft to rotate the rotating shaft by the cover switch may be included.

The cover switch is provided in a door locking device that is provided in the battlefield and locks and unlocks the door, and when the door locking device locks the door, the cover switch contacts the rotating part to rotate the rotation shaft, The cover may be rotated together with the rotating shaft to open the suction hole.

When the door locking device unlocks the door, the cover switch is released from contact with the rotating part, and the rotating shaft is rotated with the cover to a position before rotation, so that the suction hole may be closed.

It may include an opening/closing device that selectively opens and closes the discharge hole so that air inside the door is discharged to the outside of the door or is prevented from being discharged.

The opening and closing device includes a pair of first support portions provided in the door duct, a rotation shaft rotatably supported by the pair of first support portions, and a rotation shaft provided to be rotated together with the rotation shaft on the rotation shaft to open and close the discharge hole. A cover, a rotating part connected by the rotating shaft and a link to rotate the rotating shaft, a second supporting part provided in the door duct for rotatably supporting the rotating part, a torsion spring provided in the rotating part, and provided in the rotating part And a contact portion that contacts and releases the door locking device for locking and unlocking the door to rotate the rotating portion.

When the door locking device locks the door, the door locking device contacts the contact part to rotate the rotating part, and the rotating shaft rotates in the same direction as the rotating part together with the rotating part, and the cover together with the rotating shaft The discharge hole may be opened by rotating.

When the door locking device unlocks the door, the door locking device is released from the contact portion, the rotating portion is rotated together with the rotating shaft to a position before being rotated by the torsion spring, and the cover is rotated with the rotating shaft. It is rotated together with the discharge hole may be closed.

According to embodiments of the present invention, a cooling structure for discharging hot air inside the door to the outside of the door using a venturi effect, and a cooling structure for discharging hot air inside the door forcibly by a cooling fan to the outside of the door As can be applied at the same time, it is possible to efficiently reduce the surface temperature outside the door while securing the capacity of the cooking compartment.

In addition, it is possible to improve energy efficiency while efficiently lowering the surface temperature of the outside of the door by selectively using a cooling structure according to the use mode.

1 is a perspective view of an oven according to an embodiment of the present invention.

2 is a view showing an open state of the oven door according to an embodiment of the present invention.

Figure 3 is a side cross-sectional view of the oven according to an embodiment of the present invention.

4 is a view showing a state in which hot air inside a door is discharged to the outside of an oven by a suction passage and a discharge passage according to an embodiment of the present invention.

Figure 5 is an exploded perspective view showing a state in which the opening and closing device is provided in the oven according to an embodiment of the present invention.

Figure 6 is a perspective view showing an enlarged injection of the configuration of the opening and closing device according to an embodiment of the present invention.

7 is a view showing a state in which the opening and closing device according to an embodiment of the present invention is provided on the front panel to open and close the suction hole.

FIG. 8 is a view showing a state in which the door lock switch is unlocked at the lock portion and the suction hole is closed by the opening and closing device when the oven according to an embodiment of the present invention is in the cooking mode.

9 is a view showing the flow of air through which the high-temperature air inside the door is discharged to the outside of the oven when the suction hole is closed by the opening and closing device according to an embodiment of the present invention.

10 is a view showing a state in which the door lock switch is locked to the locking unit to open the suction hole when the oven is in a cleaning mode according to an embodiment of the present invention.

11 is a view showing the flow of air through which the hot air inside the door is discharged to the outside of the oven when the opening and closing device according to an embodiment of the present invention opens the suction hole.

12 is a perspective view showing an enlarged injection of the configuration of an opening and closing device according to another embodiment of the present invention.

13 is a view illustrating a state in which a door lock switch is unlocked from a lock portion when the oven is in a cooking mode according to another embodiment of the present invention.

14 is a diagram illustrating a state in which a door lock switch according to another embodiment of the present invention is unlocked at a lock portion and a discharge hole is closed by an opening/closing device, and hot air inside the door is prevented from being discharged to the outside of the oven. drawing.

15 is a view showing a state in which the door lock switch is locked to the locking portion when the oven is in a cleaning mode according to another embodiment of the present invention.

16 is a view showing the flow of air through which hot air inside the door is discharged to the outside of the oven in a state in which the door lock switch according to another embodiment of the present invention is locked to the locking unit and the opening and closing device opens the discharge hole.

The embodiments described in the present specification and the configurations shown in the drawings are only preferred examples of the disclosed invention, and there may be various modifications that may replace the embodiments and drawings of the present specification at the time of filing of the present application.

In addition, the same reference numerals or reference numerals shown in each drawing of the present specification indicate parts or components that substantially perform the same function.

In addition, terms used in the present specification are used to describe the embodiments, and are not intended to limit and/or limit the disclosed invention. Singular expressions include plural expressions unless the context clearly indicates otherwise. In the present specification, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features It does not preclude the presence or addition of elements, numbers, steps, actions, components, parts, or combinations thereof.

In addition, terms including ordinal numbers such as “first” and “second” used in the present specification may be used to describe various elements, but the elements are not limited by the terms, and the terms are It is used only for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, a first element may be referred to as a second element, and similarly, a second element may be referred to as a first element. The term “and/or” includes a combination of a plurality of related listed items or any of a plurality of related listed items.

Meanwhile, the terms “front”, “rear”, “upper”, “lower”, “upper” and “lower” used in the following description are defined based on the drawings, and the shape of each component according to this term And the location is not limited.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view of an oven according to an embodiment of the present invention, Figure 2 is a view showing a state in which the door of the oven according to an embodiment of the present invention is opened, and Figure 3 is an embodiment of the present invention. It is a side cross-sectional view of the oven according to.

As shown in FIGS. 1 to 3, the oven includes a main body 10 forming an external appearance, a cooking chamber 20 provided to open the front inside the main body 10, and a cooking compartment provided on the front of the main body 10 It includes a door 30 for opening and closing 20.

The main body 10 includes a front panel 11 forming the front surface of the main body 10, a side panel 13 forming a side surface of the main body 10, and a rear panel 15 forming the rear surface of the main body 10. ), and an upper panel 16 forming an upper portion of the body 10.

An electric equipment room cover 17 covering the front of the electric equipment room 50 to be described below may be provided on the front upper part of the front panel 11. A display module 40 to be described below may be mounted on the battlefield cover 17. The front panel 11 may be provided with a suction hole 12 for inhaling hot air discharged from the door 30. The configuration in which the suction hole 12 is provided in the front panel 11 will be described in detail below.

A suction part 14 may be provided on the side panel 13 so that air may be sucked into the electric room 50 to be described below. The external air sucked into the battlefield 50 through the suction unit 14 may flow inside the battlefield 50 and cool the electric equipment.

The cooking compartment 20 is provided to have a box shape with an open front inside the main body 10 and allows food to be put in and out of the cooking compartment 20 through the open front of the cooking compartment 20.

A plurality of supports (not shown) may be provided on both sidewalls of the inside of the cooking chamber 20, and a rack (not shown) for placing food may be mounted on the plurality of supports.

A divider (not shown) capable of dividing the cooking chamber 20 into a plurality may be mounted on the plurality of supports to be detachable. The cooking chambers 20 divided into a plurality of dividers do not have to have the same size, and may have different sizes, and the dividers may be made of an insulating material to insulate each cooking chamber 20. Through this, the space divided into plural pieces of the cooking compartment 20 can be used in various ways according to the intention of the user.

The cooking chamber 20 is provided with a heater 21 for heating the food, and the heater 21 may be an electric heater including an electric resistor. The heater 21 is not limited to an electric heater, and may be a gas heater that generates heat by burning gas. Thus, ovens may include electric ovens and gas ovens.

A circulation fan 25 configured to circulate the air in the cooking compartment 20 so that the food is heated evenly and a circulation motor 23 may be provided at the rear of the cooking compartment 20.

A fan cover 27 covering the circulation fan 25 may be provided at the front of the circulation fan 25, and a through hole 29 may be formed in the fan cover 27 to allow air to flow.

The open front of the cooking chamber 20 is opened and closed by the door 30, and the door 30 may be hinged to the lower portion of the main body 10 so as to be rotatable with respect to the main body 10. A door handle 31 that can be gripped by a user may be provided on the front upper part of the door 30. The user can open and close the cooking compartment 20 by holding the door handle 31. A door duct 33 may be provided above the door 30. The door duct 33 may include a discharge hole 35 for discharging the hot air inside the door 30 to the outside of the door 30. The door duct 33 may include a locking part 37 that locks and unlocks the door 30 according to a use mode. The discharge portion 35 and the locking portion 37 will be described in detail below. An air inlet 39 through which external air is sucked into the door 30 may be provided under the door 30.

The display module 40, which displays various types of operation information of the oven and through which a user can input an operation command, may be mounted on the battlefield cover 17 provided on the front upper portion of the front panel 11. An operation part 41 provided to additionally operate an oven may be provided on the battlefield cover 17.

An electric equipment room 50 may be provided in the oven to accommodate electric equipment (not shown) that controls the operation of various accessories including the display module 40. The battlefield 50 is provided above the cooking chamber 20, and between the battlefield 50 and the cooking chamber 20, the battlefield 50 prevents the heat of the cooking chamber 20 from being transmitted to the battlefield 50. Insulation material (not shown) may be provided to insulate the cooking chamber 20. The insulating material may be provided so as to cover the outside of the cooking chamber 20 as a whole so that heat from the cooking chamber 20 is not transmitted to the outside of the oven, as well as between the electrical equipment chamber 50 and the cooking chamber 20.

Since the inside of the electrical equipment chamber 50 may increase in temperature due to the heat of various electrical equipment, the oven may be provided with a cooling structure that cools the electrical equipment chamber 50 by circulating air around the electrical equipment chamber 50.

The cooling structure of the oven may include a cooling fan 51 for flowing air, and discharge

passages

80 and 85 for discharging air sucked by the cooling fan 51 to the front of the oven.

The air outside the oven is sucked into the battlefield 50 through the suction part 14 formed on the side panel 13, and the air sucked into the battlefield 50 flows inside the battlefield 50 to cool the electronic equipment. After that, it can be guided by the

discharge passages

80 and 85 and discharged to the front of the oven.

A door locking device 60 capable of locking and unlocking the door 30 may be provided in the battlefield 50. The door locking device 60 may include a door locking switch 61 provided rotatably on the door locking device 60. The door lock switch 61 may be locked and unlocked by the locking part 37 provided in the door duct 33. When the door lock switch 61 is locked to the locking part 37, the door 30 may be locked. When the door lock switch 61 is unlocked by the locking part 37, the door 30 may be in a state in which it can be opened and closed freely.

In the case of the cooking mode, since the temperature inside the cooking chamber 20 is relatively low, there is no great risk even if the door 30 is opened, and when cooking is completed, the door 30 is used so that the user can easily open the door 30. ) May be in an unlocked state.

In the case of the cleaning mode, since the temperature inside the cooking compartment 20 is relatively high, it may be dangerous if the door 30 is opened, and the door 30 may be in a locked state to prevent opening of the door 30.

4 is a diagram illustrating a state in which hot air inside a door is discharged to the outside of an oven by a suction passage and a discharge passage according to an embodiment of the present invention.

As shown in FIG. 4, the cooling structure for discharging hot air inside the door 30 to the outside of the door 30 is a suction passage through which the hot air inside the door 30 is sucked by the cooling fan 51. It may include (35, 12, 70) and discharge passages (80, 85) through which the high-temperature air sucked by the cooling fan 51 is discharged to the outside of the oven.

The

suction passages

35, 12, and 70 are in communication with the discharge hole 35 provided in the door duct 33, the suction hole 12 provided in the front panel 11, and the suction hole 12. It may include a suction duct 70 for guiding the air sucked by 12 to the cooling fan 51.

The cooling fan 51 sucks air from the outside of the oven into the electrical room 50, and the high temperature air discharged from the door 30 through the suction hole 12 and the suction duct 70 is sucked. It may be provided in a shape capable of directional suction. That is, it may be provided in a shape capable of sucking air from the upper and lower portions of the cooling fan 51, respectively.

The

discharge passages

80 and 85 communicate with the discharge duct 80 to guide the air sucked by the cooling fan 51 to be discharged to the outside of the main body 10 and the discharge duct 80 to discharge the air to the outside of the oven. It may include a discharge unit 85 to. A discharge port 83 through which the air of the discharge duct 80 is discharged to the discharge part 85 may be provided at an end of the discharge duct 80 in communication with the discharge part 85.

The discharge part 85 may be formed between the upper end of the door duct 33 and the electric equipment chamber 50. In detail, the discharge unit 85 may be formed on the door duct 33. The discharge part 85 may be formed under the front part of the battlefield cover 17 and the battlefield 50 covering the front of the battlefield 50.

The upper end of the door duct 33 may be located between the suction hole 12 and the discharge port 83 of the discharge duct 80. This is to avoid a collision between the air discharged through the discharge hole 35 and sucked into the suction hole 12 and the air discharged through the discharge port 83.

Between the door duct 33 having a discharge hole 35 through which hot air inside the door 30 is discharged and the front panel 11 having a suction hole 12 through which the air discharged from the discharge hole 35 is sucked A gap G may be formed in the. Some of the hot air discharged through the discharge hole 35 may be sucked into the suction hole 12 and the remaining part may be discharged to the discharge unit 85 through the gap G. Since the upper end of the door duct 33 is located between the suction hole 12 and the discharge port 83 of the discharge duct 80, the remaining part of the hot air discharged through the discharge hole 35 fills the gap (G). Through the discharge unit 85 can be smoothly discharged.

The

suction passages

35, 12, and 70 may be provided with an opening and closing device 100 for selectively opening and closing the

suction passages

35, 12, and 70. A detailed description of the opening and closing device 100 will be described below.

Next, the flow of air in which the hot air inside the door 30 is discharged to the outside of the door 30 and the hot air discharged to the outside of the door 30 is discharged to the outside of the oven will be described.

Air sucked through the air inlet 39 (refer to FIG. 3) provided under the door 30 may be moved upward as the temperature increases inside the door 30. The air sucked through the air inlet 39 (refer to FIG. 3) may increase in temperature while lowering the surface temperature of the outside of the door 30, which has increased temperature due to the temperature inside the cooking chamber 20. The hot air inside the door 30 may be moved to the upper portion of the door 30 and discharged to the outside of the door 30 through the discharge hole 35. Some of the hot air discharged through the discharge hole 35 may be forcibly sucked into the suction hole 12 by the cooling fan 51. The high temperature air sucked into the suction hole 12 may be guided by the suction duct 70 and sucked into the cooling fan 51. The discharge duct 80 may include a suction opening 81 so that the air guided by the suction duct 70 can be sucked into the cooling fan 51. The hot air sucked by the cooling fan 51 may be guided by the discharge duct 80 and discharged to the discharge port 83. The high temperature air discharged through the discharge port 83 may be discharged to the outside of the oven through the discharge part 85.

The remaining part of the hot air discharged through the discharge hole 35 may be discharged to the discharge unit 85 through the gap G due to the venturi effect. In detail, a low pressure region may be generated in the discharge part 85 by the flow velocity of air discharged to the discharge part 85 by the cooling fan 51. When a low pressure region is generated in the discharge part 85, the hot air discharged through the discharge hole 35 may be discharged to the discharge part 85 through a gap G communicated with the discharge part 85. The high-temperature air discharged through the discharge unit 85 may be discharged to the outside of the oven.

Accordingly, the high-temperature air inside the door 30 can be discharged to the outside of the oven through both a method using a venturi effect and a method using forced suction by the cooling fan 51. Accordingly, while securing the capacity of the cooking chamber 20, the surface temperature of the outside of the door 30 can be efficiently reduced. The size of the discharge hole 35 may be equal to or larger than the size of the suction hole 12 so that both of the above-described methods can be smoothly generated.

As for the energy loss of the oven during operation, the energy loss due to the cooking chamber 20 is about 76%, the energy loss due to the heat capacity due to the temperature increase of the various structures constituting the oven itself is about 14%, and the door 30 is closed. The energy loss through is approximately 10%. If the cooling structure for lowering the outer surface temperature of the door 30 is improved, the outer surface temperature of the door 30 may be lowered, but energy loss through the door 30 may increase. In order to reduce energy loss through the door 30, it may be advantageous to minimize air circulation inside the door 30. Therefore, according to the operation of the oven, it is necessary to lower the surface temperature of the outside of the door 30 or adjust it so as to reduce energy loss through the door 30. To this end, an opening/closing device 100 for selectively opening and closing the

suction passages

35, 12 and 70 may be provided on the

suction passages

35, 12, and 70.

5 is an exploded perspective view showing a state in which an opening/closing device is provided in an oven according to an embodiment of the present invention, and FIG. 6 is a spray perspective view showing an enlarged configuration of an opening/closing device according to an embodiment of the present invention. 7 is a view showing a state in which the opening and closing device according to an embodiment of the present invention is provided on the front panel to open and close the suction hole.

As shown in FIGS. 5 to 7, the opening and closing device 100 may be provided on the front panel 11. The opening and closing device 100 may selectively open and close the suction hole 12 formed in the front panel 11.

The opening and closing device 100 includes a pair of support portions 110 provided on the front panel 11, a rotation shaft 120 rotatably supported by the pair of support portions 110, and a suction hole provided on the rotation shaft 120 A cover 130 for opening and closing 12, a cover switch 63 for operating the cover 130 by rotating the rotation shaft 120, and a rotation shaft 120 provided on the rotation shaft 120 by a cover switch 63 It may include a rotating part 140 to rotate.

When the oven is in the cooking mode, the door lock switch 61 may be unlocked by the lock unit 37. The cover switch 63 may be provided on the door lock switch 61 of the door lock device 60. When the door lock switch 61 is in the unlocked state in the locking part 37, the cover switch 63 may be in a state spaced apart from the rotating part 140. In this case, the cover 130 may be in a state in which the suction hole 12 is closed. When the suction hole 12 is closed, the hot air inside the door 30 can be discharged to the outside of the oven only by a method using the Venturi effect. In the cooking mode, when the temperature inside the cooking chamber 20 is relatively low, the opening and closing device 100 closes the suction hole 12 to properly lower the surface temperature outside the door 30 while circulating air inside the door 30 Energy loss can be reduced by ensuring that this is minimized.

When the oven is operated in the cleaning mode, the door lock switch 61 may be locked to the lock part 37. When the door lock switch 61 is locked to the locking part 37, the cover switch 63 may contact the rotating part 140 to rotate the rotating shaft 120. When the rotary shaft 120 is rotated, the cover 130 can be rotated together with the rotary shaft 120 to open the suction hole 12. High temperature air inside the door 30 while the suction hole 12 is open. Since is discharged to the outside of the oven through both the method using the venturi effect and the method using forced suction by the cooling fan 51, the surface temperature outside the door 30 can be reduced as much as possible. In the cleaning mode in which the temperature inside the cooking chamber 20 is relatively high, the opening/closing device 100 may open the suction hole 12 to lower the surface temperature outside the door 30 as much as possible.

Next, the operation of the opening/closing device 100 selectively opening and closing the suction hole 12 according to the operation of the oven will be described in detail.

FIG. 8 is a view showing a state in which the door lock switch is unlocked at the lock portion and the suction hole is closed by the opening and closing device when the oven is in the cooking mode according to an embodiment of the present invention. It is a view showing the flow of air discharged to the outside of the oven of hot air inside the door in a state in which the suction hole is closed by the opening and closing device according to an embodiment.

As shown in FIGS. 8 to 9, when the oven is in the cooking mode, the door lock switch 61 may be unlocked by the lock part 37. In this case, the cover switch 63 may be spaced apart from the rotating part 140, and the cover 130 may be in a state in which the suction hole 12 is closed. When the suction hole 12 is closed by the cover 130, hot air inside the door 30 may be discharged to the outside of the door 30 through the discharge hole 35. Since the suction hole 12 is closed, the high temperature air discharged through the discharge hole 35 may be discharged to the discharge unit 85 through the gap G. This may be achieved by a venturi effect generated by the flow velocity of air that is sucked into the electrical room 50 by the cooling fan 51 and then guided by the

discharge passages

80 and 85 and discharged to the front of the oven.

Accordingly, the hot air inside the door 30 can be discharged to the outside of the oven only by a method using the Venturi effect. For this reason, in the cooking mode in which the temperature inside the cooking chamber 20 is relatively low, the surface temperature outside the door 30 is appropriately lowered and air circulation inside the door 30 is minimized, thereby reducing energy loss.

FIG. 10 is a view showing a state in which the door lock switch is locked to the locking part to open the suction hole when the oven according to an embodiment of the present invention is in the cleaning mode, and FIG. 11 is an embodiment of the present invention. It is a view showing the flow of air in which the hot air inside the door is discharged to the outside of the oven when the opening and closing device according to the example opens the suction hole.

As shown in FIGS. 10 to 11, when the oven is in the cleaning mode, the door lock switch 61 may be locked to the lock part 37. At this time, the cover switch 63 may contact the rotating part 140 to press the rotating part 140. Accordingly, the rotation shaft 120 is rotated, and the cover 130 is rotated together with the rotation shaft 120 to open the suction hole 12. With the suction hole 12 open, the hot air inside the door 30 may be discharged to the outside of the door 30 through the discharge hole 35. Some of the hot air discharged through the discharge hole 35 may be sucked into the suction hole 12 by the cooling fan 51 (see FIG. 4 ). The hot air sucked into the suction hole 12 is guided by the suction duct 70 and may be sucked into the cooling fan 51 (see FIG. 4) through the suction opening 81. The high-temperature air sucked in by the cooling fan 51 (refer to FIG. 4) may be discharged to the outside of the oven through

discharge passages

80 and 85.

The remaining part of the hot air discharged through the discharge hole 35 may be discharged to the discharge unit 85 through the gap G. This may be achieved by a venturi effect generated by the flow velocity of air that is sucked into the electrical room 50 by the cooling fan 51 and then guided by the

discharge passages

80 and 85 and discharged to the front of the oven.

Accordingly, the high-temperature air inside the door 30 can be discharged to the outside of the oven through both a method using a venturi effect and a method using forced suction by the cooling fan 51. For this reason, in the cleaning mode in which the temperature inside the cooking chamber 20 is relatively high, the surface temperature outside the door 30 can be reduced as much as possible.

When the operation of the oven enters the cooking mode again, as shown in FIGS. 8 to 9, the door lock switch 61 may be unlocked by the locking part 37. At this time, the cover switch 63 is turned into the rotating part ( While spaced apart from 140, the force pressing the rotating part 140 is released so that the cover 130 is rotated together with the rotating shaft 120 to close the suction hole 12.

12 is an enlarged perspective view showing a configuration of an opening and closing device according to another embodiment of the present invention.

As shown in FIG. 12, the opening and closing device 200 may be provided in the door duct 33. The opening and closing device 200 may selectively open and close the discharge hole 35 formed in the door duct 33.

The opening and closing device 200 includes a pair of first support portions 210 provided in the door duct 33, a rotation shaft 220 that is rotatably supported by the pair of first support portions 210, and a rotation shaft 220 It is provided in the cover 230 for opening and closing the discharge hole 35, the rotating part 240 that is connected by the rotating shaft 220 and the link 270 to rotate the rotating shaft 220, and the rotating part 240 is rotatable. A second support part 280 provided in the door duct 33 to be supported, and a torsion spring 260 provided in the rotating part 240 and a contact part 250 may be included.

The contact part 250 may be provided on the rotating part 240 to contact the door lock switch 61. In a state in which the door locking device 60 is unlocked by the locking part 37, the door locking switch 61 may be spaced apart from the contact part 250. In a state in which the door locking device 60 is locked to the locking part 37, the door locking switch 61 may contact the contact part 250.

When the door locking device 60 is locked to the locking part 37 and the door locking switch 61 presses the contact part 250, the rotating part 240 can be rotated. When the rotating part 240 is rotated, the rotating shaft 220 connected by the rotating part 240 and the link 270 may be rotated. When the rotation shaft 220 is rotated, the cover 230 is rotated together with the rotation shaft 220 to open and close the discharge hole 35.

The torsion spring 260 is provided in the rotating part 240 and when the force that the door lock switch 61 presses the contact part 250 is released, the rotating part 240 may be rotated back to the position before rotation.

In the drawing, a configuration in which the rotation shaft 220 and the rotation unit 240 are connected by a link 270 is disclosed, but is not limited thereto and may be connected by a gear or the like.

13 is a diagram illustrating a state in which a door lock switch is unlocked from a lock when the oven is in a cooking mode according to another embodiment of the present invention, and FIG. 14 is a view showing a door lock switch according to another embodiment of the present invention. It is a view showing a state in which the hot air inside the door is prevented from being discharged to the outside of the oven in a state where the discharge hole is closed by the opening and closing device by being unlocked by the locking part.

As shown in FIGS. 13 to 14, when the oven is in the cooking mode, the door lock switch 61 may be unlocked by the lock unit 37. In this case, the door lock switch 61 may be spaced apart from the contact part 250, and the cover 230 may be in a state in which the discharge hole 35 is closed. When the discharge hole 35 is closed by the cover 230, hot air inside the door 30 may be prevented from being discharged to the outside of the door 30. Accordingly, in the cooking mode in which the temperature inside the cooking chamber 20 is relatively low, the hot air inside the door 30 is prevented from being discharged to the outside of the door 30, thereby reducing energy loss.

15 is a view showing a state in which the door lock switch is locked to the locking unit when the oven is in the cleaning mode according to another embodiment of the present invention, and FIG. 16 is a door lock switch according to another embodiment of the present invention. It is a view showing the flow of air through which the hot air inside the door is discharged to the outside of the oven in a state where the opening and closing device is locked to the part to open the discharge hole.

As shown in FIGS. 15 to 16, when the oven is in the cleaning mode, the door lock switch 61 may be locked to the locking part 37. In this case, the door lock switch 61 may contact the contact part 250 to press the contact part 250. Accordingly, the rotating part 240 may be rotated. In addition, the rotation shaft 220 connected by the rotation unit 240 and the link 270 may also be rotated. When the rotation shaft 220 is rotated, the cover 230 may be rotated together with the rotation shaft 220 to open the discharge hole 35. When the discharge hole 35 is open, the hot air inside the door 30 may be discharged to the outside of the door 30 through the discharge hole 35. Some of the hot air discharged through the discharge hole 35 may be sucked into the suction hole 12 by a cooling fan 51 (see FIG. 4 ). The hot air sucked into the suction hole 12 is guided by the suction duct 70 and may be sucked into the cooling fan 51 (see FIG. 4) through the suction opening 81. The high-temperature air sucked in by the cooling fan 51 (refer to FIG. 4) may be discharged to the outside of the oven through the

discharge passages

80 and 85.

discharge passages

80 and 85 and discharged to the front of the oven.

When the operation of the oven enters the cooking mode again, as shown in FIGS. 13 to 14, the door lock switch 61 can be unlocked by the lock part 37. At this time, the door lock switch 61 As spaced apart from 250, a force pressing the contact part 250 may be released. When the force pressing the contact part 250 is released, the rotation part 240 may be rotated back to the position before rotation by the torsion spring 260. When the rotating part 240 is rotated back to the position before being rotated, the rotating shaft 220 may also be rotated back to the position before being rotated. When the rotation shaft 220 is also rotated back to the position before rotation, the cover 230 may be rotated again together with the rotation shaft 220 to close the discharge hole 35.

In the description of the oven with reference to the accompanying drawings above, a specific shape and direction have been described, but various modifications and changes are possible by a person skilled in the art, and such modifications and changes are included in the scope of the present invention. It must be interpreted.

Claims

main body;

A cooking chamber provided to have a front surface open inside the main body;

A door for opening and closing the cooking compartment;

A door duct coupled to an upper portion of the door and including a discharge hole for discharging the air inside the door to the outside of the door in a direction opposite to the front of the main body;

A front panel disposed at the rear of the door duct and formed on a front surface of the main body including a suction hole through which air discharged through the discharge hole is sucked;

A cooling fan for discharging the air sucked through the suction hole to the outside of the body;

An exhaust duct for guiding the air sucked by the cooling fan to be discharged to the outside of the main body; And

A suction duct formed under the discharge duct to guide air sucked through the suction hole to be sucked into the cooling fan;

Oven containing a.
The method of claim 1,

The size of the discharge hole is the same as or larger than the size of the suction hole.
The method of claim 1,

The front panel is an oven provided to form a gap between the door duct.
The method of claim 3,

An oven including a discharge part formed between the door duct and the electrical equipment chamber and communicating with the discharge duct so that air guided by the discharge duct is discharged to the outside of the main body.
The method of claim 4,

The cooling fan is an oven configured to suck in the air sucked into the suction hole and the air that has cooled the interior of the electrical equipment chamber and discharged to the discharge part through the discharge duct.
The method of claim 5,

The gap communicates with the discharge part, and a low pressure region is generated in the discharge part by the flow velocity of the air discharged to the discharge part, so that part of the hot air inside the door is discharged to the discharge part through the discharge hole and the gap. Oven.
The method of claim 6,

An upper end of the door duct is an oven positioned between the suction hole and the outlet of the discharge duct.
The method of claim 1,

An oven comprising an opening and closing device that selectively opens and closes the suction hole so that air discharged through the discharge hole is sucked into the suction hole or is prevented from being sucked.
The method of claim 8,

The opening and closing device includes a pair of support portions provided on the front panel, a rotation shaft rotatably supported by the pair of support portions, a cover provided to be rotated on the rotation shaft together with the rotation shaft to open and close the suction hole, and the An oven including a cover switch for operating the cover by rotating a rotating shaft, and a rotating part provided on the rotating shaft to rotate the rotating shaft by the cover switch.
The method of claim 9,

The cover switch is provided in a door locking device that is provided in the battlefield and locks and unlocks the door, and when the door locking device locks the door, the cover switch contacts the rotating part to rotate the rotation shaft, An oven in which the cover is rotated together with the rotation shaft to open the suction hole.
The method of claim 10,

When the door locking device unlocks the door, the cover switch is released from contact with the rotating part, and the rotating shaft is rotated together with the cover to a position before rotation to close the suction hole.
The method of claim 1,

An oven comprising an opening and closing device that selectively opens and closes the discharge hole so that the air inside the door is discharged to the outside of the door or is prevented from being discharged.
The method of claim 12,

The opening and closing device includes a pair of first support portions provided in the door duct, a rotation shaft rotatably supported by the pair of first support portions, and a rotation shaft provided to be rotated together with the rotation shaft on the rotation shaft to open and close the discharge hole. A cover, a rotating part connected by the rotating shaft and a link to rotate the rotating shaft, a second supporting part provided in the door duct for rotatably supporting the rotating part, a torsion spring provided in the rotating part, and provided in the rotating part And a contact portion for contacting and releasing the door locking device for locking and unlocking the door to rotate the rotating portion.
The method of claim 13,

When the door locking device locks the door, the door locking device contacts the contact part to rotate the rotating part, and the rotating shaft rotates in the same direction as the rotating part together with the rotating part, and the cover together with the rotating shaft The oven is rotated to open the discharge hole.
The method of claim 14,

When the door locking device unlocks the door, the door locking device is released from the contact portion, the rotating portion is rotated together with the rotating shaft to a position before being rotated by the torsion spring, and the cover is rotated with the rotating shaft. The oven is rotated together with the discharge hole is closed.