Air-circulating electric roaster

Abstract

The present invention provides an air-circulating electric roaster equipped with a cover, which can improve temperature safety of the cooking plate and the lower part of the main body during cooking. [Solution] An air-circulating electric roaster includes a body, a heater for generating heat, at least one fan positioned inside the body along a first direction of the body, a cooking plate heated by the heat from the heater, an air intake for drawing air from above the cooking plate towards the body, an air exhaust for discharging air that has passed through the inside of the body to the outside, and a functional cover covering the top of the cooking plate. The air-circulating electric roaster further includes a flow path correction unit positioned on the side of the air exhaust unit, which corrects the air flow path on the side of the air exhaust unit by blocking a portion of the space on the body side facing the side of the air exhaust unit.

Description

Technical Field

[0001] The present invention relates to an air circulation type electric roaster.

Background Art

[0002] In an air circulation type electric roaster, a long fan is provided on one side of the lower part of the main body, and a cooking part is placed on the upper part. During cooking, the fan is operated to form an air flow inside the electric roaster, so that the smoke is not discharged outside and the oil falls into the internal oil receiver (see, for example, Patent Document 1).

[0003] That is, in an air circulation type electric roaster, an air intake part and an air discharge part are respectively formed on both side surfaces of the air circulation plate. By the operation of the fan provided at the lower part on the air intake part side, air is inhaled from the cooking part and discharged to the air discharge part through the lower part of the air circulation plate.

[0004] In order to cook food, for example, meat deliciously using such an air circulation type electric roaster, high heat and quick cooking are required, but this is accompanied by inconveniences such as oil splashing, smoke generation, cleaning of internal components, and cleaning of oil around.

[0005] In particular, in order to cook meat deliciously, it is necessary to cook it so as to cause the Maillard reaction or Browning reaction. If it is not cooked at a temperature of 177 degrees Celsius or higher at which the Maillard reaction easily occurs, it is impossible to cook the outside so that it is crispy and flavorful and the inside is soft and juicy. In order to heat at a temperature of 177 degrees Celsius or higher at which the Maillard reaction easily occurs, a sufficient temperature of the cooking plate and oil are required.

[0006] Conventional electric grills (roasters) do not easily generate sufficient heat. Even if the cooking plate is preheated, the temperature drops as soon as the meat is placed on it, as the meat absorbs heat. Furthermore, as the temperature rises, moisture begins to evaporate from the meat on the cooking plate. Cooking at a high temperature allows the oil on the surface to form a protective film, resulting in a nicely browned meat due to the Maillard reaction. However, once the temperature drops, the moisture in the meat evaporates, resulting in poorly cooked meat.

[0007] As part of efforts to solve these problems, Patent Document 2 describes a functional cover for an air-circulating electric roaster that prevents the evaporation of moisture from the meat and facilitates the Maillard reaction when roasting meat using an air-circulating electric roaster, while also preventing overheating of the bottom during cooking and maintaining a high temperature on the cooking plate, as well as an air-circulating electric roaster including the same.

[0008] However, when a cover is placed over an air-circulating electric roaster, the amount of high-temperature air drawn in through the air intake increases relatively, and the oil particles contained in the air also become finer. For example, even if an air purification member described in Patent Document 3 is installed, there is a risk that the side wall on the air outlet side may become contaminated with oil.

[0009] Furthermore, an increase in the intake of high-temperature air can cause changes in the fluid flow inside the air-circulating electric roaster (especially on the air exhaust side), potentially affecting the temperature of the cooking plate and the temperature safety of the lower part of the unit. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Korean Patent Publication No. 10-0743347 [Patent Document 2] Japanese Patent Publication No. 7527079 [Patent Document 3] Korean Patent Publication No. 10-2517645 [Overview of the project] [Problems that the invention aims to solve]

[0011] The present invention has been made in view of the above, and one of its objectives is to provide an air-circulating electric roaster equipped with a cover that can improve temperature safety of the cooking plate and the lower part of the main body during cooking.

[0012] The problems to be solved by the present invention are not limited to those mentioned above, and other problems not mentioned can be clearly understood by those with ordinary skill in the art from the following description. [Means for solving the problem]

[0013] In at least one embodiment of the present invention, an air-circulating electric roaster is provided, comprising a body, a heater for generating heat, at least one fan disposed inside the body along a first direction of the body, a cooking plate heated by the heat from the heater, an air intake for drawing air from above the cooking plate towards the body, an air exhaust for discharging air that has passed through the inside of the body to the outside, and a functional cover covering the top of the cooking plate, wherein the air-circulating electric roaster is further provided, comprising a flow path correction unit disposed on the side of the air exhaust unit and correcting the airflow path on the side of the air exhaust unit by blocking a portion of the space on the body side facing the side of the air exhaust unit.

[0014] In at least one embodiment of the present invention, the flow path correction unit corrects the flow path to the air discharge unit by blocking a portion of the wall-side space, including the vortex space located on the upper part of the wall surface of the body on the air discharge unit side, thereby reducing the impact of the functional cover on the temperature safety of the cooking plate or oil receiving unit.

[0015] In at least one embodiment of the present invention, the flow path correction unit includes a flow path correction plate which is a plate-shaped member that is arranged in the wall space of the body to seal the outer space between the air discharge unit and the body and corrects the flow path up to the air discharge unit.

[0016] In at least one embodiment of the present invention, the flow path correction unit is a plate-shaped filter member that is arranged in the wall space of the body and functions as a flow path correction plate that seals the outer space between the air discharge unit and the body and corrects the flow path to the air discharge unit, and at the same time includes a wall surface contamination prevention member that prevents contamination of the wall surface of the body on the air discharge unit side.

[0017] In at least one embodiment of the present invention, the flow path correction portion includes a flow path correction plate formed of a plastic material, which includes a plate-shaped central portion, a bottom portion formed on the first side along the long axis of the central portion, an elastic portion formed on the second side opposite to the first side along the long axis of the central portion, and support portions formed on both sides along the short axis of the central portion.

[0018] In at least one embodiment of the present invention, the air-circulating electric roaster further comprises a plate-shaped filter member made of a porous material, which is placed at the bottom of the flow path correction plate and supported by the support portion.

[0019] In at least one embodiment of the present invention, the air-circulating electric roaster further comprises an air purification member disposed on the air intake side for preventing contamination of the body wall and reducing the emitted smoke and odor.

[0020] In at least one embodiment of the present invention, the flow path correction unit and the air purification member have the same structure.

[0021] In at least one embodiment of the present invention, the functional cover includes a first opening formed on the side of the air intake portion, a second opening formed on the side of the air discharge portion, and a flap portion formed to extend downward at a predetermined angle from the inside of the second opening. The flap portion has a shape in which the width at the center is narrower than the ends on both sides.

[0022] Even if each embodiment in this specification is described independently of each other, each embodiment can be combined with each other, and the embodiments obtained by the combination are also included in the scope of rights of the present invention.

[0023] The above summary is for the purpose of explanation only and is not intended to be limiting in any way. In addition to the above-described aspects, embodiments, and features, additional aspects, embodiments, and features should become clear by referring to the drawings and the detailed description.

Advantages of the Invention

[0024] According to at least one embodiment of the present invention, in an air circulation type electric roaster provided with a cover, there is an effect that an air circulation type electric roaster capable of improving the temperature safety of the cooking plate and the lower part of the main body during cooking can be provided.

[0025] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned should be clearly understood by those having ordinary knowledge in the technical field from the following description.

Brief Description of the Drawings

[0026] [Figure 1] It is a longitudinal sectional view of a conventional air circulation type electric roaster provided with a functional cover. [Figure 2] It is a sectional view of an air circulation type electric roaster according to at least one embodiment of the present invention. [Figure 3] It is a sectional view of an air circulation type electric roaster according to at least one embodiment of the present invention. [Figure 4]This is a perspective view of a flow path correction plate according to at least one embodiment of the present invention. [Figure 5] This is a conceptual diagram of a functional cover used in an experiment to verify the effect of the flow path correction unit according to at least one embodiment of the present invention. [Figure 6] This table shows experimental results illustrating the temperature safety of the cooking plate and the lower part of the main body with and without the flow path correction unit according to at least one embodiment of the present invention, when using the air-circulating electric roaster shown in Figure 3 and the functional cover shown in Figure 5. [Figure 7] This is a side view of a functional cover according to at least one embodiment of the present invention. [Modes for carrying out the invention]

[0027] The following description will detail an air-circulating electric roaster according to at least one embodiment of the present invention, with reference to the attached drawings.

[0028] Figure 1 is a longitudinal cross-sectional view of an air-circulating electric roaster 100 equipped with a conventional functional cover 110.

[0029] As shown in Figure 1, the air-circulating electric roaster 100, fitted with a functional cover 110, consists of a body (main body) 120, a heater 130 for generating heat, a power supply unit (not shown) for supplying power to the heater 130, a fan 140 positioned inside the body 120 along a first direction of the body 120, a cooking plate 150 positioned above the heater 130 and heated by the heat from the heater 130, an air intake unit 162 for drawing air from above the cooking plate 150 into the body 120, an air exhaust unit 163 for exhausting air that has passed through the inside of the body 120 to the outside, an air circulation plate 160 having at least one second through hole 161 and forming an internal air passage from the air intake unit 162 to the air exhaust unit 163, and an oil receiving unit 170.

[0030] The body 120 is placed on a flat surface such as a table or floor, houses various components inside, and forms the overall appearance of the air-circulating electric roaster 100. The fan 140 is located inside the lower part of the body 120, and the oil tray 170, air circulation plate 160, heater 130, and cooking plate 150 are arranged in order from bottom to top.

[0031] The fan 140, located inside the body 120, is a long fan with a built-in motor. This fan 140 circulates the air inside through its operation, drawing in smoke (hot air containing oil and odor) generated during cooking and releasing the air from which the oil and odor have been removed to the outside of the body 120.

[0032] The functional cover 110 shown in Figure 1 is configured to be detachably attached to an air-circulating electric roaster by forming a hinge structure in which a hinge pin (or hinge groove) formed on the first side connects with a hinge groove (or hinge pin) formed on the first side of the air-circulating electric roaster, thereby enabling opening and closing of the cooking space.

[0033] As shown in Figure 1, the body 120 of the air-circulating electric roaster 100 requires space for intake and exhaust between the first side wall where the air intake portion 162 of the air circulation plate 160 is formed and the second side wall where the air exhaust portion 163 is formed.

[0034] Experiments revealed that when the wall surface of the body 120 and the fan 140 are in close contact or proximity, the suction power of the fan 140 decreases, and the air circulation performance does not work. Furthermore, it was confirmed that when the wall surface of the body 120 and the fan 140 are in close contact or proximity, oil that has passed through the air intake section 162 flows down along the wall surface, causing the fan 140 to become severely contaminated.

[0035] Therefore, a space for intake and exhaust is essential between the wall surface of the body 120 and the first side wall where the air intake portion 162 of the air circulation plate 160 is formed, and the second side wall where the air exhaust portion 163 is formed, and a certain distance or more must also be secured between the wall surface of the body 120 and the fan 140.

[0036] Furthermore, since a step is formed where the air circulation plate 160 protrudes inward from the wall surface of the body 120 to support it, the air passage connecting the air intake section 162 to the air discharge section 163 via the upper part of the oil receiving section 170 is formed in an irregular shape, and the upper side of the wall surface of the body 120 is recessed upward due to the step that supports the air circulation plate 160, forming a vortex space.

[0037] Even if the recessed portion at the top of the body 120 is filled in to eliminate the vortex space, when air that has passed over the top of the oil receiving section 170 flows into the space on the air discharge section 163 side, the flow velocity decreases due to the widened space, and as a result, it becomes relatively difficult to discharge air to the outside through the air discharge section 163.

[0038] In the case of an air-circulating electric roaster without a functional cover 110, the top of the cooking plate 150 is open, so even if vortices or irregular airflow occur or the flow velocity decreases on the air exhaust side 163, the exhaust is carried out relatively smoothly, and therefore does not significantly affect the temperature safety of the cooking plate 150 or the oil receiving section 170.

[0039] However, when the functional cover 110 is attached, more high-temperature air circulates inside the body 120, and the air discharged through the air discharge section 163 is affected by the vortex space or the relatively expanded space (see the thick dotted line in Figure 1). At the same time, the functional cover 110 covers the top of the cooking plate 150, making it difficult to discharge air to the outside.

[0040] At this time, on the air intake side 162, the flow velocity is high due to the operation of the fan 140, so the upper part of the wall surface of the body 120 is effectively outside the flow path, and the space between the wall surface of the body 120 and the airflow has almost no effect on the airflow. However, on the air discharge side 163, the flow velocity is relatively slower, and the upper part of the wall surface of the body 120 is effectively included in the flow path, forming a vortex space, and thus it is affected by the functional cover 110.

[0041] In other words, since a fast-flowing fluid flows along the surface of a solid, the air that passes over the top of the oil receiving section 170 rises along the wall surface of the body 120 on the air discharge section 163 side, passes through the upper vortex space, and heads towards the air discharge section 163.

[0042] As a result of the air passing through the air exhaust section 163, some of the air flows towards the top of the cooking plate 150, while the rest is discharged to the outside. This causes heat to accumulate inside the body 120, which affects the temperature safety of the cooking plate 150 or the oil receiving section 170.

[0043] This phenomenon can be confirmed by experiments described later, and the present invention was devised to improve temperature safety of the cooking plate and the lower part of the main body during cooking in an air-circulating electric roaster equipped with a cover.

[0044] Figure 2 is a cross-sectional view of an air-circulating electric roaster 200 according to at least one embodiment of the present invention.

[0045] As shown in Figure 2, the air-circulating electric roaster 200 fitted with the functional cover 210 consists of a body 220, a heater 230 for generating heat, a power supply unit (not shown) for supplying power to the heater 230, a fan 240 positioned inside the body 220 along a first direction of the body 220, a cooking plate 250 provided above the heater 230 and having at least one first through-hole (oil drain hole) 251, an air intake unit 262 for drawing air from above the cooking plate 250 into the body 220, an air exhaust unit 263 for discharging air that has passed through the inside (lower part) of the body 220 to the outside, and an air circulation plate 260 having at least one second through-hole 261 to form an air flow path from the air intake unit 262 to the air exhaust unit 263, an oil receiving unit 270, and a flow path correction unit 280 that corrects the air flow path on the air exhaust unit 263 side by blocking a part of the space on the body 220 side of the air exhaust unit 263.

[0046] The body 220 is placed on a flat surface such as a table or floor, houses various components inside, and forms the overall appearance of the air-circulating electric roaster 200. The fan 240 is located inside the lower part of the body 220, and the oil tray 270, air circulation plate 260, heater 230, and cooking plate 250 are arranged in order from bottom to top.

[0047] In the example shown in Figure 2, the cooking plate 250 is depicted with at least one first through-hole 251 formed near the center, and both sides in the longitudinal direction inclined toward the first through-hole 251. However, this is just one example, and the entire cooking plate 250 may have a flat shape with multiple through-holes formed to allow oil to drain downwards. In such a case, the second through-hole 261 of the air circulation plate 260 can be formed to be inclined downwards to guide the flowing oil to the oil receiving section 270.

[0048] The fan 240, located inside the body 220, is a long fan with a built-in motor. By operating the fan 240, it circulates the air inside, drawing in smoke (hot air containing oil and odor) generated during cooking, and discharging air from which the oil and odor have been removed to the outside of the body 220.

[0049] The functional cover 210 is configured to be detachably attached to an air-circulating electric roaster by forming a rotatable hinge structure through which a hinge pin (or hinge groove) formed on the first side of the air-circulating electric roaster connects with a hinge groove (or hinge pin) formed on the first side of the air-circulating electric roaster, thereby enabling the opening and closing of the cooking space.

[0050] In at least one embodiment of the present invention, the flow path correction unit 280 prevents air from reaching the wall-side space, including the vortex space located at the upper part of the wall surface of the body 220 on the air discharge unit 263 side, thereby correcting (shaping) the flow path from the position past the oil receiving unit 270 to the air discharge unit 263 to be substantially straight, thereby reducing (or minimizing) the impact of the functional cover 210 on the temperature safety of the cooking plate 250 or the oil receiving unit 270. A flow path that is "substantially straight" means, for example, that the width dimension of the flow path cross-section is approximately constant, as shown in Figure 2.

[0051] In other words, as shown in Figure 2, the flow path correction unit 280 according to at least one embodiment of the present invention corrects the irregular shape of the flow path on the air discharge unit 263 side to a more regular shape and a wider space to a narrower space (see the thick dotted line in Figure 2), thereby preventing the air velocity passing through this part from slowing down and preventing the generation of vortices or irregular flows, thereby making the discharge of air through the air discharge unit 263 smoother.

[0052] In at least one embodiment of the present invention, the flow path correction unit 280 is a plate-shaped member, for example, as shown in Figure 2, and is composed of a correction plate that is arranged in the wall space of the body 220 and seals the outer space between the air discharge unit 263 and the body 220, thereby correcting the flow path from the position past the oil receiving unit 270 to the air discharge unit 263 to be substantially straight.

[0053] On the other hand, when using a cover with an air-circulating electric roaster, the amount of high-temperature air drawn in through the air intake increases, and the oil particles contained in the air become finer. Therefore, even if an odor reduction or air purification member is placed on the air intake side, the side wall on the air exhaust side may become contaminated with oil.

[0054] When using the functional cover 210, in order to minimize the impact on the temperature safety of the cooking plate 250 or the oil receiving section 270, and at the same time prevent contamination on the air discharge section 263 side, the flow path correction section 280 according to at least one embodiment of the present invention is a plate-shaped filter member (porous member) that, as shown in Figure 2, is placed in the wall space of the body 220 and seals the outer space between the air discharge section 263 and the body 220, thereby functioning as a correction plate that corrects the flow path from a position past the oil receiving section 270 to the air discharge section 263 to be substantially straight, and at the same time is composed of a wall contamination prevention member that prevents wall contamination of the body 220 on the air discharge section 263 side.

[0055] Figure 3 is a cross-sectional view of an air-circulating electric roaster 300 according to at least one embodiment of the present invention.

[0056] As shown in Figure 3, the air-circulating electric roaster 300 fitted with the functional cover 210 further includes an air purification member 310 to prevent contamination of the wall surface of the body 220 on the air intake section 262 side and at the same time reduce the emitted smoke and odor.

[0057] Here, the air circulation plate is a component that has a first side wall with an air intake section formed therein for drawing air from above the cooking plate into the body, and a second side wall with an air exhaust section formed therein for discharging air that has passed through the inside of the body to the outside, and is used by the operation of a fan to circulate the air from above the cooking plate through the bottom of the body.

[0058] The air circulation plate 260 shown in Figures 2 and 3 is illustrated as a member in which a first side wall with an air intake portion 262, a second side wall with an air discharge portion 263, and a bottom portion with a second through hole 261 are integrally formed. However, this is only one embodiment, and for example, the first side wall with the air intake portion 262 and the second side wall with the air discharge portion 263 may be formed as part of the body 220. In this case, the air circulation plate consists of a plate-shaped bottom portion with the second through hole 261 and has the function of circulating the air from the upper part of the cooking plate 250 to the lower part of the body 220.

[0059] That is, the upper side surface of the body 220 is formed to extend to the positions of the air intake portion 262 and the air discharge portion 263, respectively, and the extended portions function as the first side wall and the second side wall, respectively, and it goes without saying that such a configuration is also included within the scope of the present invention.

[0060] Figures 2 and 3 show a configuration in which a single fan 240 is located on the air intake section 262 side. However, this is only one embodiment. For example, a dual-fan structure is also possible in which a fan for air intake is located on the air intake section 262 side and a fan for air exhaust is located on the air exhaust section 263 side. It goes without saying that such a configuration is also included within the scope of the present invention.

[0061] In at least one embodiment of the present invention, the first through-hole 251 is formed near the center of the cooking plate 250, and the second through-hole 261 is formed in the air circulation plate 260 opposite the first through-hole 251, with a size equivalent to or larger than the first through-hole 251.

[0062] In the examples shown in Figures 2 and 3, the cooking plate 250 is depicted as having a single through-hole in the center (or near the center). However, this is merely one example, and it goes without saying that the present invention is not limited by the specific shapes of the body 220, heater 230, fan 240, cooking plate 250, air circulation plate 260, or oil receiving section 270.

[0063] The air intake section 262 and the air exhaust section 263 have a structure in which a plurality of vents are formed along the longitudinal direction of the body 220 (i.e., along the longitudinal direction of the fan 240), and these are usually formed to be the same length as or longer than the length of the fan 240.

[0064] Figure 4 is a perspective view of a flow path correction plate 480 according to at least one embodiment of the present invention.

[0065] As shown in Figure 4, the flow path correction plate 480 according to at least one embodiment of the present invention is, for example, made of a plastic material and consists of a thin rectangular plate-shaped central portion 481, a bottom portion 482 formed on the first side along the long axis of the central portion 481, an elastic portion 483 formed on the second side opposite to the first side along the long axis of the central portion 481, and support portions 484 formed on both sides along the short axis of the central portion 481.

[0066] When the flow path correction plate 480 shown in Figure 4 is used alone, it is placed in the wall space of the body 220, sealing the outer space between the air discharge section 263 and the body 220, and functions as a correction plate that corrects the flow path from the position past the oil receiving section 270 to the air discharge section 263 to be approximately straight.

[0067] On the other hand, when a porous plate-shaped filter member is inserted into the bottom 482 of the flow path correction plate 480, it is positioned in the wall space of the body 220, sealing the outer space between the air discharge section 263 and the body 220, and functions as a correction plate that corrects the flow path from the position past the oil receiving section 270 to the air discharge section 263 to be approximately straight, while also functioning as a wall contamination prevention member that prevents contamination of the wall surface of the body 220 on the air discharge section 263 side.

[0068] In other words, when the central part 481 of the flow path correction plate 480 shown in Figure 4 is installed facing inward, it functions as a correction plate. When the central part 481 of the flow path correction plate 480 is installed facing outward and a plate-shaped filter member made of a porous material is inserted into the bottom part 482, it functions as a correction plate and at the same time as a wall surface contamination prevention member.

[0069] The flow path correction plate 480 shown in Figure 4 is an example of a flow path correction unit 280 that corrects the air flow path on the air discharge unit 263 side by sealing off a portion of the space on the body 220 side of the air discharge unit 263. The flow path correction unit 280 can be formed with a structure similar to that of the air purification member 310, for example, or it may be a member that is extended from the upper part of the body 220 on the air discharge unit 263 side to seal off a portion of the space on the body 220 side.

[0070] Figure 5 is a conceptual diagram of a functional cover 210 used in an experiment to verify the effect of the flow path correction unit 280 according to at least one embodiment of the present invention.

[0071] As shown in Figure 5, the functional cover 210 has a first opening 211 formed on the air intake side of the flat frame, a second opening 212 formed on the air discharge side of the frame, and a flap portion 213 formed to extend downward from the inside of the second opening 212 toward the inside of the frame at a predetermined angle (for example, an angle of 90 degrees or less). In this example, the flap portion 213 is inclined with respect to the upper surface of the functional cover 210 such that its lower end is on the outer periphery side of the functional cover 210 than its upper end.

[0072] Without the flow path correction unit 280, the height of the functional cover, the first opening 211 on the air intake side, the second opening 212 on the air exhaust side, and the flap section 213 were each set to optimized values. To verify the effect of the flow path correction unit 280, the second opening 212 on the air exhaust side was kept unchanged, and the height was reduced by 2 mm, the first opening 211 on the air intake side by 20 mm, and the flap section 213 by 5 mm to manufacture the functional cover 210.

[0073] Reducing the height of the functional cover, the size of the opening on the air intake side, and the size of the flap increases the airtightness of the cooking space, thereby improving overall thermal efficiency. Furthermore, reducing the size of the flap increases the amount of air that is circulated inside the main body from the air exhaust, which also improves overall thermal efficiency.

[0074] However, in such cases, without the flow path correction unit according to at least one embodiment of the present invention, the temperature inside the body (especially near the oil receiving section) may increase, potentially having a serious impact on safety.

[0075] In other words, by using the flow path correction unit according to at least one embodiment of the present invention, it is possible to increase the design flexibility of the functional cover and improve overall thermal efficiency while maintaining the temperature near the oil receiving section below an appropriate temperature.

[0076] Figure 6 is a table showing experimental results illustrating the temperature safety of the cooking plate 250 and the lower part of the body 220 when using the air-circulating electric roaster 300 shown in Figure 3 and attaching the functional cover shown in Figure 5, with or without the flow path correction unit 280 according to at least one embodiment of the present invention.

[0077] As shown in Figure 6, (i) when nothing was provided on the air intake side 262 (side 1) and the air exhaust side (side 2), the temperature on the intake and exhaust sides of the cooking plate 250 was maintained at approximately 300 degrees Celsius after 19 minutes of power-on, whereas the temperature on the upper side wall of the oil receiving section 270 and the center of the bottom of the oil receiving section 270 rose to approximately 120 degrees Celsius. (ii) when a filter (porous material) was installed as an air purification member on the air intake side 262 (side 1) and nothing was provided on the air exhaust side (side 2), the temperature on the intake and exhaust sides of the cooking plate 250 was maintained at approximately 310 degrees Celsius after 21 minutes of power-on. In contrast, when the temperature of the upper part of the side wall of the oil receiving section 270 and the center of the bottom of the oil receiving section 270 rose to about 120 degrees, and (iii) when a correction plate was attached to the air intake section 262 side (side 1) and nothing was provided on the air exhaust section side (side 2), the temperature of the intake section side and exhaust section side of the cooking plate 250 was maintained at about 320 degrees after 20 minutes of power being turned on, whereas when the temperature of the upper part of the side wall of the oil receiving section 270 and the center of the bottom of the oil receiving section 270 rose to about 130 degrees, and (iv) when nothing was provided on the air intake section 262 side (side 1) and a filter was attached to the air exhaust section side (side 2) as a wall surface contamination prevention member, 1 hour 30 minutes Even with the power on for an extended period, the temperature of the suction and discharge sides of the cooking plate 250 remained at approximately 300 degrees, while the temperature rise of the upper side wall of the oil receiving section 270 and the center of the bottom of the oil receiving section 270 remained at approximately 80 degrees, (v) when nothing was provided on the air suction section 262 side (side 1) and a correction plate was attached to the air discharge section side (side 2), even with the power on for 1 hour and 30 minutes, the temperature of the suction and discharge sides of the cooking plate 250 remained at approximately 300 degrees, while the temperature rise of the upper side wall of the oil receiving section 270 and the center of the bottom of the oil receiving section 270 remained at approximately 75 degrees, (vi) when nothing was provided on the air suction section 262 side (side 1) and the air discharge section side ( (2) When filters were installed on both sides, the temperature on the intake and exhaust sides of the cooking plate 250 remained at approximately 305 degrees Celsius even after 1 hour and 30 minutes of power-on, while the temperature rise at the top of the side wall of the oil receiving section 270 and the center of the bottom of the oil receiving section 270 remained at approximately 90 degrees Celsius. (vii) When correction plates were installed on both the air intake section 262 side (side 1) and the air exhaust section (side 2), the temperature on the intake and exhaust sides of the cooking plate 250 remained at approximately 315 degrees Celsius even after 1 hour and 30 minutes of power-on, while the temperature rise at the top of the side wall of the oil receiving section 270 and the center of the bottom of the oil receiving section 270 remained at approximately 90 degrees Celsius.

[0078] As can be seen from the experimental results shown in Figure 6, it was confirmed that regardless of whether a filter or correction plate is attached to the air intake side 262 (side 1), attaching a filter or correction plate to the air exhaust side (side 2) allows the temperature of the cooking plate to be kept at a high temperature while the temperature near the oil receiving section is kept below the appropriate temperature.

[0079] In other words, in this specification, temperature safety of the cooking plate 250 or the oil receiving portion 270 means maintaining a sufficient temperature on the cooking plate to facilitate the Maillard reaction, while preventing overheating of the lower part during cooking and preventing thermal deformation of the oil receiving portion. The experimental results shown in Figure 6 demonstrate the effectiveness of the flow path correction unit according to at least one embodiment of the present invention.

[0080] As shown in Figure 5, the functional cover used in the experiment in Figure 6 has a flap portion 213 formed in the shape of a long plate with a certain width. Reducing the flap portion 213 by 5 mm means reducing the width and thus reducing the height of the flap portion 213.

[0081] In this case, the width can be reduced by either forming a groove in the central part while maintaining the width of the flap section 213, or by forming arches from both ends toward the center. This further improves overall thermal efficiency by circulating more air from the central side than from the ends.

[0082] Figure 7(a) is a side view of a functional cover 210 attached to an air-circulating electric roaster shown in Figure 2 or Figure 3, and Figures 7(b), 7(c), and 7(d) are side views of a functional cover 710 according to at least one embodiment of the present invention.

[0083] Figure 7(b) shows that the flap portion 713 of the functional cover 710 according to at least one embodiment of the present invention has a linearly recessed groove 714-1 near the center, Figure 7(c) shows that the flap portion 713 of the functional cover 710 according to at least one embodiment of the present invention has a curved recessed groove 714-2 near the center, and Figure 7(d) shows that the flap portion 713 of the functional cover 710 according to at least one embodiment of the present invention has an arch-shaped recessed groove 714-3 extending from both ends toward the center. For example, groove 714-1 is square or rhombic, and groove 714-2 is approximately semicircular.

[0084] In other words, the functional cover 710 according to at least one embodiment of the present invention includes a flap portion 713 having a shape in which the width on the central side is narrower than the width on both ends.

[0085] In functional covers, the primary role of the flap is to prevent heat buildup inside the unit by preventing an excessive increase in the amount of air circulating within the unit from the air exhaust vent when the cooking space is covered by the functional cover. In other words, it functions as an air circulation limiter.

[0086] However, by using the flow path correction unit according to at least one embodiment of the present invention, results similar to those shown in the experiment in Figure 6 were obtained even when the width of the flap portion was reduced or the flap portion was removed to an extreme degree. Therefore, the flap portion 213 shown in Figure 5 and the flap portion 713 shown in Figure 7 can be said to be part of a safety device to further ensure safety during use in an air-circulating electric roaster equipped with the flow path correction unit according to at least one embodiment of the present invention.

[0087] Nevertheless, experiments involving actual meat grilling confirmed that using a functional cover with a flap was more advantageous than using a functional cover without a flap in maintaining a sufficient temperature on the cooking plate for the Maillard reaction to occur easily due to the sealing effect of the flap (i.e., the meat was grilled more deliciously). Therefore, it can be said that providing a flap is more desirable.

[0088] As described above, according to at least one embodiment of the present invention, an air-circulating electric roaster equipped with a cover can be provided that can improve the temperature safety of the cooking plate and the lower part of the main body during cooking.

[0089] Although the present invention has been described above using embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It will be apparent to those skilled in the art that various modifications or improvements can be made to the above embodiments. It will be clear from the claims that such modified or improved forms may also be included in the technical scope of the present invention. [Explanation of Symbols]

[0090] 200, 300: Air-circulating electric roaster 210, 710: Functional cover 211: 1st opening 212:Second opening 213, 713: Flap section 220: Body (main unit) 230: Heater 240: Fan 250: Cooking board 251: First through hole 260: Air circulation plate 261: Second through hole 262: Air intake section 263: Air discharge section 270: Oil receiving section 280: Flow path correction unit 310: Air purification component 480: Flow path correction plate 481: Central part 482: Bottom 483: Elastic part 484: Support part 714-1, 714-2, 714-3: Groove

Claims

1. An air-circulating electric roaster comprising a body, a heater for generating heat, at least one fan disposed inside the body along a first direction of the body, a cooking plate heated by the heat from the heater, an air intake for drawing air from above the cooking plate towards the body, an air exhaust for discharging air that has passed through the inside of the body to the outside, and a functional cover covering the top of the cooking plate, The system includes a flow path correction unit that is positioned on the air discharge side and corrects the airflow path on the air discharge side by blocking a portion of the space on the body side facing the air discharge side. Air-circulating electric roaster.

2. The flow path correction unit reduces the impact of the functional cover on the temperature safety of the cooking plate or oil receiving area by correcting the flow path to the air discharge section by blocking a portion of the space on the wall side, including the vortex space located in the upper part of the wall surface of the body on the air discharge section side. The air-circulating electric roaster according to claim 1.

3. The aforementioned flow path correction unit includes a flow path correction plate, which is a plate-shaped member positioned in the wall space of the body, sealing the outer space between the air discharge unit and the body, and correcting the flow path up to the air discharge unit. The air-circulating electric roaster according to claim 1.

4. The aforementioned flow path correction unit is a plate-shaped filter member that is placed in the wall space of the body and functions as a flow path correction plate that seals the outer space between the air discharge unit and the body and corrects the flow path to the air discharge unit, and at the same time includes a wall surface contamination prevention member that prevents contamination of the wall surface of the body on the air discharge unit side. The air-circulating electric roaster according to claim 3.

5. The flow path correction section is made of a plastic material and includes a flow path correction plate which includes a plate-shaped central portion, a bottom portion formed on the first side along the long axis of the central portion, an elastic portion formed on the second side opposite to the first side along the long axis of the central portion, and support portions formed on both sides along the short axis of the central portion. The air-circulating electric roaster according to claim 1.

6. The flow path correction plate further comprises a plate-shaped filter member made of a porous material, which is placed at the bottom of the flow path correction plate and supported by the support portion. The air-circulating electric roaster according to claim 5.

7. The system further includes an air purification member positioned on the air intake side to prevent contamination of the body wall and to reduce the emitted smoke and odor. The air-circulating electric roaster according to claim 1.

8. The flow path correction unit and the air purification member have the same structure. The air-circulating electric roaster according to claim 7.

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