Air circulation electric roaster

Abstract

To provide an air circulation type electric roaster equipped with a cover, capable of improving the temperature safety of a cooking plate and a lower part of a main body during cooking. [Solution] An air circulation type electric roaster includes a body, a heater for generating heat, at least one fan arranged inside the body along a first direction of the body, a cooking plate heated by heat from the heater, an air intake section for drawing air above the cooking plate into the body side, an air exhaust section for exhausting air that has passed through the inside of the body to the outside, and a functional cover covering the top of the cooking plate, and is further equipped with a flow path correction section arranged on the air exhaust section side and blocking a part of the space on the body side facing the air exhaust section side to correct the air flow path on the air exhaust section side.

Description

[Technical field]

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

[0002] An air-circulating electric roaster has a long fan mounted on one side of the lower body and the cooking section placed on top. When cooking, the fan is operated to create an air flow inside the electric roaster, so that smoke is not discharged to the outside and oil falls into an internal oil pan (see, for example, Patent Document 1).

[0003] That is, in an air circulation type electric roaster, an air intake section and an air exhaust section are formed on both sides of the air circulation plate, and air is sucked in from the cooking section by the operation of a fan installed at the bottom of the air intake section and discharged to the air exhaust section through the bottom of the air circulation plate.

[0004] In order to cook food, such as meat, deliciously using such an air-circulating electric roaster, it is necessary to cook it quickly at high heat, but this can result in inconveniences such as oil splashing, smoke generation, washing of internal components, and cleaning of the surrounding oil.

[0005] In particular, to cook meat deliciously, you need to cook it in a way that causes the Maillard reaction or the Browning reaction, so that the outside is browned and flavorful, while the inside is soft and the juices are still alive. To heat meat to a temperature of 177 degrees Celsius or higher, at which the Maillard reaction occurs, you need sufficient cooking plate temperature and oil.

[0006] It is not easy to obtain such a sufficient amount of heat with a normal electric grill (roaster), and even if the cooking plate is preheated, as soon as meat is placed on the cooking plate, the heat is absorbed by the meat, causing the temperature to drop, and as the temperature rises again, the moisture from the meat on the cooking plate begins to evaporate. By cooking while maintaining a high temperature, the oil on the surface forms a film, and the meat is cooked until golden brown as the Maillard reaction occurs, but once the temperature drops, the moisture in the meat evaporates, causing the meat to be cooked badly.

[0007] As part of efforts to solve these problems, Patent Document 2 describes a functional cover for an air-circulation electric roaster that uses a cover to prevent moisture from evaporating from the meat and facilitate the Maillard reaction when roasting meat using an air-circulation electric roaster, and an air-circulation electric roaster including the functional cover, which can maintain a high temperature on the cooking plate while preventing overheating of the lower part during cooking.

[0008] However, when an air circulation electric roaster is covered, the amount of high-temperature air drawn in through the air intake increases relatively and the oil particles contained in the air become finer. For example, even if the air purification member described in Patent Document 3 is installed, the side wall on the air exhaust side may be contaminated with oil.

[0009] Furthermore, the increase in the amount of high-temperature air being drawn in may cause changes in the fluid flow inside the air circulation electric roaster (especially on the air exhaust side), which may affect the temperature of the cooking plate and the temperature safety of the bottom of the main body. [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 Summary of the Invention [Problem to be solved by the invention]

[0011] The present invention has been made in consideration of the above, and an object of the present invention is to provide an air circulation type electric roaster with a cover that can improve the 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 will be clearly understood by a person having ordinary skill in the art from the following description. [Means for solving the problem]

[0013] In at least one embodiment of the present invention, there is provided an air circulation type electric roaster including a body, a heater for generating heat, at least one fan arranged inside the body along a first direction of the body, a cooking plate heated by heat from the heater, an air intake part for drawing air above the cooking plate into the body, an air exhaust part for exhausting air that has passed through the inside of the body to the outside, and a functional cover covering an upper part of the cooking plate, further comprising a flow path corrector arranged on the air exhaust part side and correcting a flow path of air on the air exhaust part side by closing a part of a space on the body side facing the air exhaust part side.

[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 space on the wall side, including the vortex space existing in the upper part of the wall 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 portion is a plate-shaped member that is arranged in the wall space of the body to seal off the outer space between the air discharge portion and the body and includes a flow path correction plate that corrects the flow path to the air discharge portion.

[0016] In at least one embodiment of the present invention, the flow path correction portion 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 corrects the flow path to the air discharge portion by sealing off the outer space between the air discharge portion and the body, and also includes a wall contamination prevention member that prevents contamination of the wall surface of the body on the air discharge portion 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 and including a plate-shaped central portion, a bottom portion formed on a first side along the long axis direction of the central portion, an elastic portion formed on a second side opposite the first side along the long axis direction of the central portion, and support portions formed on both sides along the short axis direction of the central portion.

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

[0019] In at least one embodiment of the present invention, the air circulation electric roaster further includes an air purifying member disposed on the air intake side to prevent contamination of the wall surface of the body and to reduce exhausted smoke and odor.

[0020] In at least one embodiment of the present invention, the flow path correction portion 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 air intake side, a second opening formed on the air exhaust side, and a flap portion formed to extend downward at a predetermined angle from the inside of the second opening, and the flap portion has a shape in which the width at the center is narrower than at both side ends.

[0022] Although the embodiments in this specification are described independently of each other, they may be combined with each other, and the combined embodiments are also included within the scope of the present invention.

[0023] The foregoing summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features set forth above, additional aspects, embodiments, and features will become apparent by reference to the drawings and detailed description. Effect of the Invention

[0024] According to at least one embodiment of the present invention, it is possible to provide an air circulation type electric roaster with a cover, which can improve the temperature safety of the cooking plate and the lower part of the main body during cooking.

[0025] The effects of the present invention are not limited to those mentioned above, and other effects not mentioned will be clearly understood by those having ordinary skill in the art from the following description. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a longitudinal cross-sectional view of an air circulation electric roaster with a conventional functional cover. [Diagram 2] FIG. 1 is a cross-sectional view of an air circulation electric roaster in accordance with at least one embodiment of the present invention. [Diagram 3] FIG. 1 is a cross-sectional view of an air circulation electric roaster in accordance with at least one embodiment of the present invention. [Figure 4]FIG. 2 is a perspective view of a flow path correction plate in accordance with at least one embodiment of the present invention. [Diagram 5] 13 is a conceptual diagram of a functional cover used in an experiment for verifying the effect of a flow path correction unit according to at least one embodiment of the present invention. FIG. [Figure 6] 7 is a table showing the experimental results showing the temperature safety of the cooking plate and the lower part of the main body with or without the flow path correction unit according to at least one embodiment of the present invention when using the air circulation electric roaster shown in FIG. 3 and attaching the functional cover shown in FIG. 5. [Figure 7] FIG. 2 is a side view of a functional cover in accordance with at least one embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an air circulation electric roaster according to at least one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

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

[0029] As shown in FIG. 1, air circulation type electric roaster 100 equipped with functional cover 110 includes body 120, heater 130 for generating heat, power supply unit (not shown) for supplying power to heater 130, fan 140 arranged inside body 120 along a first direction of body 120, cooking plate 150 having at least one first through hole (oil drain hole) 151 and arranged on the upper part of heater 130 to be heated by heat from heater 130, air intake part 162 for drawing air above cooking plate 150 into body 120, air exhaust part 163 for exhausting air that has passed through the inside of body 120 to the outside, air circulation plate 160 having at least one second through hole 161 and forming an internal air flow path from air intake part 162 to air exhaust part 163, and oil receiving part 170.

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

[0031] The fan 140 disposed inside the body 120 is a long fan with a built-in motor, and this fan 140 has the function of circulating the air inside through the operation of the fan 140, sucking in smoke (hot air containing oil and odors) generated during cooking, and releasing the air from which the oil and odors have been removed to the outside of the body 120.

[0032] The functional cover 110 shown in FIG. 1 is configured to be detachably attached to the air circulation type electric roaster by forming a rotatable hinge structure with a hinge pin (or hinge groove) formed on the first side and a hinge groove (or hinge pin) formed on the first side of the air circulation type electric roaster, so that the cooking space can be opened and closed.

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

[0034] According to an experiment, it was found that when the wall surface of the body 120 and the fan 140 are in close contact with each other, the suction force of the fan 140 is reduced 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 with each other, the oil that passes through the air intake part 162 flows down along the wall surface, causing serious contamination of the fan 140.

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

[0036] Furthermore, since a step is formed at the portion of the wall of the body 120 that protrudes inward to support the air circulation plate 160, the air flow path that connects the air intake portion 162 through the upper portion of the oil receiving portion 170 to the air discharge portion 163 is formed in an irregular shape, and the upper side of the wall of the body 120 becomes concave upward due to the step for supporting the air circulation plate 160, forming a vortex space.

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

[0038] In the case of an air circulation type electric roaster that does not have a functional cover 110, since the top of the cooking plate 150 is open, even if a vortex or irregular air flow occurs on the air discharge part 163 side or the flow speed decreases, the discharge is relatively smooth, and therefore the temperature safety of the cooking plate 150 or the oil receiving part 170 is not significantly affected.

[0039] However, when the functional cover 110 is attached, more hot air circulates inside the body 120, and the air discharged through the air discharge part 163 is affected by the vortex space or the relatively expanded space (see the thick dotted line in FIG. 1), and at the same time, since the functional cover 110 covers the top of the cooking plate 150, it becomes difficult to discharge the air to the outside.

[0040] At this time, the air flow speed on the air intake 162 side is high due to the operation of the fan 140, and the upper wall surface of the body 120 is out of the actual flow path, so the space between the wall surface of the body 120 has almost no effect on the air flow. However, the air flow speed on the air discharge 163 side is relatively slow, and the upper wall surface of the body 120 is included in the actual flow path to form a vortex space, so it is affected by the functional cover 110.

[0041] That is, since a fast-flowing fluid flows along the surface of a solid, the air that passes through the upper part of the oil receiving part 170 rises along the wall surface of the body 120 on the air discharge part 163 side, and passes through the upper vortex space toward the air discharge part 163.

[0042] Part of the air that passes through the air exhaust portion 163 flows toward the top of the cooking plate 150, while the rest is exhausted to the outside, causing heat to accumulate inside the body 120 and affecting the temperature stability of the cooking plate 150 or the oil receiving portion 170.

[0043] This phenomenon can be confirmed by the experiment described below, and the present invention is devised to improve the temperature stability of the cooking plate and the lower part of the main body during cooking in an air circulation electric roaster equipped with a cover.

[0044] FIG. 2 is a cross-sectional view of an air circulating electric roaster 200 in accordance with at least one embodiment of the present invention.

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

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

[0047] 2, cooking plate 250 is shown with at least one first through hole 251 formed near the center and both sides in the longitudinal direction inclined toward first through hole 251, but this is only one example, and cooking plate 250 may be entirely flat with multiple through holes formed so that oil can drain downward. In this case, second through hole 261 of air circulation plate 260 may be formed to be inclined downward to guide the flowing oil to oil receiving part 270.

[0048] The fan 240 disposed inside the body 220 is a long fan with a built-in motor, and by operating the fan 240, it circulates the air inside, sucking in smoke (hot air containing oil and odor) generated during cooking, and expels 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 the air circulation type electric roaster by forming a rotatable hinge structure with a hinge pin (or hinge groove) formed on the first side and a hinge groove (or hinge pin) formed on the first side of the air circulation type electric roaster, so that the cooking space can be opened and closed.

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

[0051] That is, as shown in FIG. 2, 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 portion 263 side to a more regular shape and corrects the wide space to a narrower space (see the thick dotted line in FIG. 2), thereby preventing the flow speed of the air passing through this portion from slowing down and preventing the occurrence of vortexes or irregular flows, thereby performing the function of making it easier to discharge air through air discharge portion 263.

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

[0053] On the other hand, when a cover is used with an air circulation electric roaster, the amount of high-temperature air drawn in through the air intake increases, and the oil particles contained in the air also become finer, so even if an odor reduction member 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] In order to minimize the impact on the temperature safety of the cooking plate 250 or the oil receiving part 270 when using the functional cover 210 while preventing contamination on the air discharge part 263 side, the flow path correction part 280 according to at least one embodiment of the present invention is a plate-shaped filter member (porous member) that is arranged in the wall space of the body 220 as shown in FIG. 2 and seals the outer space between the air discharge part 263 and the body 220, thereby functioning as a correction plate that corrects the flow path from the position past the oil receiving part 270 to the air discharge part 263 to an approximately straight line, and is also composed of a wall contamination prevention member that prevents contamination of the wall of the body 220 on the air discharge part 263 side.

[0055] FIG. 3 is a cross-sectional view of an air circulation electric roaster 300 in accordance with at least one embodiment of the present invention.

[0056] As shown in FIG. 3, the air circulation type electric roaster 300 equipped with the functional cover 210 further includes an air purification member 310 for preventing contamination of the wall surface of the body 220 on the air intake part 262 side and at the same time reducing the emitted smoke and odor.

[0057] Here, the air circulation plate is a component having a first side wall formed with an air intake portion for drawing air above the cooking plate into the body, and a second side wall formed with an air exhaust portion for exhausting air that has passed through the inside of the body to the outside, and circulating air above the cooking plate through the lower part of the body by operating a fan.

[0058] 2 and 3 is illustrated as a member in which the first side wall in which the air intake portion 262 is formed, the second side wall in which the air exhaust portion 263 is formed, and the bottom in which the second through hole 261 is formed are integrally formed, but this is merely one embodiment, and for example, the first side wall in which the air intake portion 262 is formed and the second side wall in which the air exhaust portion 263 is formed may be formed as part of the body 220. In this case, the air circulation plate is composed of a plate-shaped bottom in which the second through hole 261 is formed, and has the function of circulating air above the cooking plate 250 to the bottom of the body 220.

[0059] In other words, the upper side of the body 220 is formed to extend to the positions of the air intake part 262 and the air exhaust part 263, respectively, and the extended parts function as the first side wall and the second side wall, respectively. It goes without saying that such a form is also included in the scope of the present invention.

[0060] Although Figures 2 and 3 show a configuration in which one fan 240 is arranged on the air intake section 262 side, this is merely one embodiment, and for example, a dual fan structure in which an air intake fan is arranged on the air intake section 262 side and an air exhaust fan is arranged on the air exhaust section 263 side is also possible, and it goes without saying that such a configuration is also included in 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 at a position opposite the first through hole 251 on the air circulation plate 260, with the same size as the first through hole 251 or larger than the first through hole 251.

[0062] In the example shown in Figures 2 and 3, cooking plate 250 is shown to have one through hole at the center (or near the center), but this is merely one embodiment, and it goes without saying that the present invention is not limited to the particular shapes of body 220, heater 230, fan 240, cooking plate 250, air circulation plate 260, or oil receiving portion 270.

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

[0064] FIG. 4 is a perspective view of a flow path correction plate 480 in accordance with at least one embodiment of the present invention.

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

[0066] When the flow path correction plate 480 shown in FIG. 4 is used alone, it is placed in the wall space of the body 220 to seal 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 plate-shaped filter member made of a porous material is inserted into the bottom 482 of the flow path correction plate 480, it is placed in the wall space of the body 220 to seal the outer space between the air discharge portion 263 and the body 220, and functions as a correction plate that corrects the flow path from the position past the oil receiving portion 270 to the air discharge portion 263 to a substantially straight line, and at the same time functions as a wall contamination prevention member that prevents contamination of the wall surface of the body 220 on the air discharge portion 263 side.

[0068] That is, when the flow path correcting plate 480 shown in FIG. 4 is mounted so that its central portion 481 faces inward, it functions as a correcting plate, and when the flow path correcting plate 480 is mounted so that its central portion 481 faces outward and a plate-shaped filter member made of a porous material is inserted into the bottom portion 482, it functions as a correcting plate and also functions as a wall surface contamination prevention member.

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

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

[0071] 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 exhaust side of the frame, and a flap portion 213 formed to extend downward at a predetermined angle (for example, an angle of 90 degrees or less) from the inside of the second opening 212 toward the inside of the frame. 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 closer to the outer periphery of the functional cover 210 than its upper end.

[0072] Without the flow path correction section 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, and in order to verify the effect of the flow path correction section 280, the second opening 212 on the air exhaust side was maintained as is, and the height was reduced by 2 mm, the first opening 211 on the air intake side was reduced by 20 mm, and the flap section 213 was reduced by 5 mm, to produce the functional cover 210.

[0073] By reducing the height of the functional cover, the size of the opening on the air intake side, or the size of the flap, the cooking space becomes more airtight, improving the overall thermal efficiency. Furthermore, by reducing the size of the flap, the amount of air discharged through the air exhaust that is circulated inside the main body increases, improving the overall thermal efficiency.

[0074] However, in such a case, 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 portion) would increase, which could seriously affect safety.

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

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

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

[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 section 262 side (side 1), by attaching a filter or correction plate to the air exhaust section side (side 2), the temperature of the cooking plate can be kept high while the temperature near the oil receiving section can be kept below an appropriate temperature.

[0079] In other words, in this specification, the temperature safety of the cooking plate 250 or the oil receiving portion 270 means maintaining a sufficient temperature of the cooking plate to facilitate the Maillard reaction, while preventing overheating of the lower portion during cooking, thereby preventing thermal deformation of the oil receiving portion. It can be said that the effect of the flow path correction unit according to at least one embodiment of the present invention has been verified from the experimental results shown in FIG. 6.

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

[0081] In this case, the width of the flap portion 213 can be reduced by forming a groove in the center while maintaining the width, or by forming an arch from both ends toward the center, which has the effect of circulating more air toward the center than the both ends, thereby further improving the overall thermal efficiency.

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

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

[0084] That is, it can be said that 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 at the center is narrower than the width at both ends.

[0085] The original role of the flap part in the functional cover is to prevent heat from building up inside the cooker due to an excessive increase in the amount of air circulated inside the cooker from the air exhaust part when the cooking space is covered with the functional cover, and it can be said to function as an air circulation limiter.

[0086] However, when the flow path correction unit according to at least one embodiment of the present invention is used, the width of the flap part is reduced, and even when the flap part is completely removed, the same results as the experimental results shown in Fig. 6 are obtained. Therefore, the flap part 213 shown in Fig. 5 and the flap part 713 shown in Fig. 7 can be said to be a part of a safety device for further ensuring safety during use in an air circulation type electric roaster equipped with the flow path correction unit according to at least one embodiment of the present invention.

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

[0088] As described above, according to at least one embodiment of the present invention, an air circulation type electric roaster with a cover can be provided, which 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 the embodiments, the technical scope of the present invention is not limited to the scope described in the above embodiments. It is clear to those skilled in the art that various modifications and improvements can be made to the above embodiments. It is clear from the description of the claims that such modifications and improvements can also be included in the technical scope of the present invention. [Explanation of symbols]

[0090] 200, 300: Air circulation electric roaster 210, 710: Functional cover 211: 1st opening 212:Second opening 213, 713: Flap section 220: Body (main body) 230:Heater 240: Fan 250: Cooking board 251: First through hole 260: Air circulation board 261: Second through hole 262: Air intake section 263: Air exhaust section 270: Oil receiving part 280: Flow path correction section 310: Air purification components 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 circulation type electric roaster including a body, a heater for generating heat, at least one fan disposed inside the body, a cooking plate heated by heat from the heater, an air intake section for drawing air above the cooking plate into the body, an air exhaust section for exhausting air that has passed through the inside of the body to the outside, and a functional cover for covering an upper portion of the cooking plate, a flow path correction unit that is disposed on the air exhaust portion side and closes a part of a space on the body side facing the air exhaust portion, and corrects the air flow path on the air exhaust portion side so that a space on a wall surface side of the body is excluded from the flow path of air toward the air exhaust portion, Air circulation electric roaster.

2. the flow path correction unit corrects the flow path to the air discharge portion by closing a part of a space on a wall surface side including a vortex space present in an upper part of a wall surface of the body on the air discharge portion side.

2. The air circulation electric roaster according to claim 1.

3. The flow path correction unit is a plate-shaped member that is disposed in a wall space of the body to close an outer space between the air discharge unit and the body, and includes a flow path correction plate that corrects the flow path to the air discharge unit.

2. The air circulation electric roaster according to claim 1.

4. The flow path correction unit is a plate-shaped filter member that is disposed in a wall space of the body and functions as a flow path correction plate that corrects the flow path to the air discharge unit by sealing an outer space between the air discharge unit and the body, and also includes a wall contamination prevention member that prevents contamination of the wall surface of the body on the air discharge unit side.

4. The air circulation electric roaster according to claim 3.

5. The flow path correction portion is made of a plastic material and includes a flow path correction plate including a plate-shaped central portion, a bottom portion formed on a first side along a long axis direction of the central portion, an elastic portion formed on a second side opposite to the first side along the long axis direction of the central portion, and a support portion formed on both sides of the central portion along a short axis direction.

2. The air circulation electric roaster according to claim 1.

6. The filter further includes a plate-shaped filter member made of a porous material, the plate-shaped filter member being placed on the bottom of the flow path correction plate and supported by the support portion.

6. The air circulation electric roaster according to claim 5.

7. An air purifying member is further provided on the air intake side to prevent contamination of the wall surface of the body and to reduce smoke and odor emitted.

2. The air circulation electric roaster according to claim 1.

8. The flow path correction portion and the air purification member have the same structure.

8. The air circulation electric roaster according to claim 7.

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