Electric grill equipped with dual air curtain-type dual air purification and circulation system

Abstract

The present invention relates to an electric grill equipped with a dual air curtain-type dual air purification and circulation system, and to an electric grill equipped with a dual air purification and circulation system that includes a first suction fan, a second suction fan and a radiation plate having first discharge holes and second discharge holes, the grill having partitions each formed at one of two side walls of a grill body, and bent in a U shape by means of a second flow switching part and extended downward, having a plurality of third discharge holes and fourth discharge holes each formed in the partition of one of two side walls, and having a first flow switching part that protrudes toward the inside of the grill body below the third discharge holes and the fourth discharge holes, wherein the third discharge holes and the fourth discharge holes of the partitions are positioned above and spaced apart from the first discharge holes and the second discharges hole of the radiation plate, respectively, and the partitions are positioned between two side walls of the grill body and two side plates of the radiation plate, such that the air discharged from the first suction fan and the second suction fan is bifurcated into an air flow discharged through the first discharge holes and the second discharge holes by means of the first flow switching part and an air flow discharged through the third discharge holes and the fourth discharge holes by means of the second flow switching part, and the air flow discharged through the third discharge holes and the fourth discharge holes is positioned above the air flow discharged through the first discharge holes and the second discharge holes, so as to form a dual air curtain.

Description

Electric grill with dual air curtain type dual air purification circulation system

[0001] The present invention relates to an electric grill, and more particularly, to an electric grill equipped with an air purification circulation system capable of removing oil vapor and smoke generated during cooking of food.

[0002] Typically, homes and restaurants are equipped with electric grills that consist of a grill with a number of drainage holes and a grease tray located at the bottom of the grill to collect the grease dripping from the drainage holes.

[0003] These electric grills discharge the oil generated when grilling meat through the grill's drainage holes into the oil tray at the bottom, but a relatively large amount of oil splashes outside, contaminating the area around the electric grill. In addition, there was a problem that the smell and smoke generated when grilling meat spread indoors, polluting the indoor air. In addition, as the heat from the grill was released indoors when grilling meat, the grilling time was delayed, and power consumption increased accordingly.

[0004] In order to solve this problem, referring to FIG. 1, the inventors of the present invention have a first suction fan (121) and a second suction fan (122) positioned on both sides of the lower space of the grill body (100) with the oil pan (110) positioned below the oil drain nozzle (171) of the grill plate (170) in between, the first suction fan (121) sucks air containing oil vapor, smoke, heat and odor generated from the upper part of the grill plate (170) through the oil drain nozzle (171) and supplies the air back to the upper part of the grill plate (170) through the first discharge hole (153) of the heat sink (150), thereby forming a first air circulation flow, and the second suction fan (122) sucks air containing oil vapor, smoke, heat and odor generated from the upper part of the grill plate (170) through the oil drain nozzle (171) and supplies the air back to the upper part of the grill plate (170) through the first discharge hole (153) of the heat sink (150), thereby forming a first air circulation flow. An electric grill equipped with a dual air purification circulation system characterized in that the air containing oil vapor, smoke, heat and odor discharged from the oil drain nozzle (171) by the suction force of the first suction fan (121) and the second suction fan (122) is purified by contact with water stored in the oil pan (110) located below the oil drain nozzle (171) and then flows into the first suction fan (121) and the second suction fan (122) by forming a second air circulation flow by supplying the air again to the upper part of the grill plate (170) through the second discharge hole (154) has been developed, applied for and patented (see 'Patent Document 1' below).

[0005] However, in the conventional electric grill disclosed in 'Patent Document 1', as shown in the air flow shown by the black arrow in FIG. 1, the air supplied to the upper portion of the grill plate (170) through the first exhaust hole (153) and the second exhaust hole (154) of the heat sink (150) collide with each other at the upper portion of the oil exhaust nozzle (171) of the grill plate (170) and is not completely sucked into the oil exhaust nozzle (171) of the grill plate (170) but diffuses to the outside of the grill main body (100), and as a result, there still remains a problem that the smell or smoke generated when grilling meat diffuses into the room, polluting the air in the room.

[0006] (Patent Document 1) KR 10-2273131 B1 (July 5, 2021)

[0007] The present invention has been devised to solve the above problems, and the purpose of the present invention is to provide an electric grill equipped with a dual air curtain type dual air purification circulation system that can completely prevent the phenomenon of air containing oil vapor, smoke, heat and odor generated when grilling meat from diffusing to the outside of the grill body.

[0008] In order to solve the above-mentioned problem, an electric roaster equipped with a dual air curtain type dual air purification circulation system according to the present invention comprises: a roaster body; a grease tray installed on the lower inner side of the roaster body and storing water; suction fans positioned and provided on both sides of the grease tray; a heat sink spaced apart from and connected to the upper side of the grease tray and the suction fan, a through hole formed along the central longitudinal direction of the bottom plate, and a plurality of first exhaust holes and second exhaust holes formed on both side plates spaced apart from both side walls of the roaster body; And a grill plate having a drain nozzle formed along the central longitudinal direction and installed spaced apart from the upper part of the bottom plate of the heat sink so that the first discharge hole and the second discharge hole of the heat sink are located at the upper part, wherein the suction fan is composed of a first suction fan and a second suction fan located on both sides of the lower space of the grill body with the oil pan located below the drain nozzle therebetween, so that the first suction fan sucks air containing oil vapor, smoke, heat, and odor generated from the upper part of the grill plate through the drain nozzle and supplies it to the upper part of the grill plate again through the first discharge hole of the heat sink, thereby forming a first air circulation flow, and the second suction fan sucks air containing oil vapor, smoke, heat, and odor generated from the upper part of the grill plate through the drain nozzle and supplies it to the upper part of the grill plate again through the second discharge hole of the heat sink, thereby forming a second air circulation flow, and by the suction force of the first suction fan and the second suction fan In an electric grill equipped with a dual air purification circulation system, air containing oil vapor, smoke, heat and odor discharged from the oil drain nozzle is purified by contact with water stored in the oil pan located at the lower part of the oil drain nozzle and then flows into the first suction fan and the second suction fan, wherein a partition wall is formed on each side wall of the grill body in a 'U' shape and extends downward by a second flow conversion unit at the upper end,A plurality of third exhaust holes and a fourth exhaust hole are formed in the partition walls of the two side walls, respectively, and a first flow diversion part is formed that protrudes toward the inside of the grill body from the lower portion of the third exhaust hole and the fourth exhaust hole, and the third exhaust hole and the fourth exhaust hole of the partition wall are positioned spaced apart from the upper portion of the first exhaust hole and the second exhaust hole of the heat sink, and the partition wall is positioned between the two side walls of the grill body and the two side plates of the heat sink, so that the air discharged from the first suction fan and the second suction fan is divided into an air flow discharged to the first exhaust hole and the second exhaust hole by the first flow diversion part and an air flow discharged to the third exhaust hole and the fourth exhaust hole by the second flow diversion part, and the air flow discharged to the third exhaust hole and the fourth exhaust hole is positioned above the air flow discharged to the first exhaust hole and the second exhaust hole to form a double air curtain.

[0009] The first flow diversion section and the second flow diversion section may be formed as horizontal walls or as walls slanted downward toward the inside of the grill body.

[0010] The flow rate of the air flow discharged from the first and second exhaust holes and the flow rate ratio of the air flow discharged from the third and fourth exhaust holes can be adjusted according to the distance between the partition wall and the side plate of the heat sink and the distance ratio between the partition wall and the side wall of the grill body.

[0011] Additionally, the flow rate ratio of the air flow discharged from the first and second exhaust holes and the air flow discharged from the third and fourth exhaust holes can be adjusted according to the size ratio between the first and second exhaust holes and the third and fourth exhaust holes.

[0012] It is preferable that the side wall of the above grill body is formed with a lower side wall formed to be inclined toward the outside of the grill body and an upper side wall formed to be inclined toward the inside of the grill body.

[0013] An electric grill equipped with a dual air curtain type dual air purification circulation system according to the present invention forms a double air flow above the grill plate, thereby completely blocking the phenomenon of air containing oil vapor, smoke, heat and odor generated above the grill plate from diffusing to the outside of the grill plate body, while allowing the first air circulation flow and the second air circulation flow by the first suction fan and the second suction fan to be firmly formed.

[0014] Fig. 1 is a cross-sectional view showing the air circulation flow of an electric grill according to the prior art.

[0015] FIG. 2 is a cross-sectional view illustrating the air circulation flow of an electric grill equipped with a dual air curtain type dual air purification circulation system according to the present invention.

[0016] Figure 3 is an enlarged partial cross-sectional view of part 'C' in Figure 2.

[0017] *Explanation of key symbols in the drawing*

[0018] 100: Grill body 101, 102: Side wall

[0019] 110: Oil pan 121: First suction fan

[0020] 122: Second intake fan 150: Heat sink

[0021] 151, 152: Side plate 153: First exhaust hole

[0022] 154: Second exhaust hole 155: Floor plate

[0023] 157: Through hole 158: Flange

[0024] 161: Heater 170: Grill pan

[0025] 171: Oil drain nozzle 181: Lower side wall

[0026] 182: Upper side wall 183: Bulkhead

[0027] 184: Third exhaust port 185: Fourth exhaust port

[0028] 186: First flow switching section 187: Second flow switching section

[0029] Below, an electric grill equipped with a dual air curtain type dual air purification circulation system according to the present invention is described in detail with reference to the attached drawings. However, detailed descriptions of well-known functions and configurations that may unnecessarily obscure the gist of the present invention are omitted.

[0030] FIG. 2 is a cross-sectional view illustrating the air circulation flow of an electric grill equipped with a dual air curtain type dual air purification circulation system according to the present invention.

[0031] Referring to FIG. 2, an electric grill equipped with a dual air curtain type dual air purification circulation system according to the present invention comprises a grill body (100), a grease pan (110) installed on the lower inner side of the grill body (100) and storing water, suction fans (121, 122) positioned on both sides of the grease pan (110), a heat sink (150) spaced apart from and coupled to the upper portion of the grease pan (110) and the suction fans (121, 122), a grill plate (170) spaced apart from and installed on the upper portion of the heat sink (150), and a heater (161) positioned below the grill plate (170).

[0032] The above grill plate (170) has a drainage nozzle (171) formed along the central length.

[0033] In the present invention, the oil drain nozzle (171) not only allows the oil generated during cooking to gather in the center of the grill pan (170) and be discharged to the oil tray (110) located below, but also allows air containing oil vapor, smoke, heat, and odor generated at the upper part of the grill pan (170) to be discharged toward the oil tray (110) located below the oil drain nozzle (171), as described below.

[0034] The above heat sink (150) has a through hole (157) formed along the central length of the bottom plate (155) so that the oil drain nozzle (171) of the grill plate (170) is connected through the through hole, thereby separating the upper space where the heater (161) is located and the lower space where the suction fans (121, 122) are located, thereby preventing the suction fans (121, 122) from being heated and damaged by the heat generated from the heater (161).

[0035] In addition, the heat sink (150) has a plurality of first exhaust holes (153) and second exhaust holes (154) formed on both longitudinal side plates (151, 152) of the upper circumference, so that air blown by the suction fan (121, 122) is supplied to the upper portion of the grill plate (170) to form an air curtain (see arrow 'A' in FIG. 2).

[0036] The type of the above suction fan (121, 122) is not particularly limited, but a long fan is more suitable for forming a uniform air curtain on the upper part of the grill plate (170).

[0037] In the present invention, the suction fans (121, 122) are composed of a first suction fan (121) and a second suction fan (122) located on both sides of the lower space of the grill body (100) with the oil pan (110) located at the lower part of the oil drain nozzle (171) in between.

[0038] Accordingly, the first suction fan (121) forms a first air circulation flow by sucking air containing oil vapor, smoke, heat, and odor generated from the upper portion of the grill plate (170) through the exhaust nozzle (171) and supplying the air back to the upper portion of the grill plate (170) through the first exhaust hole (153) of the heat sink (150), and at the same time, the second suction fan (122) forms a second air circulation flow by sucking air containing oil vapor, smoke, heat, and odor generated from the upper portion of the grill plate (170) through the exhaust nozzle (171) and supplying the air back to the upper portion of the grill plate (170) through the second exhaust hole (154) of the heat sink (150).

[0039] At this time, the air containing oil vapor, smoke, heat and odor discharged from the oil drain nozzle (171) by the suction force of the first suction fan (121) and the second suction fan (122) is directed to the oil pan (110) located below the oil drain nozzle (171), and after being purified by contact with the water (W) stored in the oil pan (110), is introduced into the first suction fan (121) and the second suction fan (122). For reference, the color of the arrow in Fig. 2 indicates the degree of air purification (the blacker the color, the more polluted the air).

[0040] Meanwhile, in the present invention, both side walls (101, 102) of the grill body (100) have an overall curved shape so that the middle portion protrudes outward. To this end, the lower side wall (181) of both side walls (101, 102) is formed to be inclined toward the outside of the grill body (100), and the upper side wall (182) is formed to be inclined toward the inside of the grill body (100). Due to the curved shape of both side walls (101, 102), the occurrence of local eddies is reduced, thereby reducing flow resistance and flow noise, and enabling the first air circulation flow and the second air circulation flow to be formed more smoothly.

[0041] On both side walls (101, 102) of the grill body (100), a partition wall (183) is formed that extends downwards in a 'U' shape from the upper end of the upper side wall (182). A plurality of third discharge holes (184) and fourth discharge holes (185) are formed on the partition walls (183) of both side walls (101, 102), and a first flow diversion part (186) that protrudes toward the grill plate (170) is formed at the lower end of the third discharge hole (184) and the fourth discharge hole (185). In addition, the upper end of the upper side wall (182) and the partition wall (183) are connected to a second flow diversion part (187).

[0042] The first flow diversion section (186) and the second flow diversion section (187) may be formed as horizontal walls or as walls slanted downward toward the grill plate (170).

[0043] On the upper surface of the first flow switching section (186), a flange (158) is positioned that is bent outward from the upper end of both side plates (151, 152) of the heat sink (150), and accordingly, the third exhaust hole (184) and the fourth exhaust hole (185) of the bulkhead (183) are positioned higher than the first exhaust hole (153) and the second exhaust hole (154) of the heat sink (150).

[0044] In addition, the bulkhead (183) is positioned between the upper side wall (182) and the two side plates (151, 152) of the heat sink (150), and accordingly, the air discharged from the first suction fan (121) and the second suction fan (122) is divided into an air flow (A) discharged through the first discharge hole (153) and the second discharge hole (154) by the first flow switching unit (186) and an air flow (B) discharged through the third discharge hole (184) and the fourth discharge hole (185) by the second flow switching unit (187), and the air flow (B) discharged through the third discharge hole (184) and the fourth discharge hole (185) is positioned above the air flow (A) discharged through the first discharge hole (153) and the second discharge hole (154) to form a double air curtain (see arrow 'B' in FIG. 2).

[0045] Accordingly, the air supplied to the upper part of the grill plate (170) through the first exhaust hole (153) and the second exhaust hole (154) collides with each other at the upper part of the drain nozzle (171) of the grill plate (170) and then the flow that spreads outward from the grill body (100) is blocked by the air flow (B1) discharged through the third exhaust hole (184) and the fourth exhaust hole (185), and is all sucked into the drain nozzle (171) of the grill plate (170) together with the air flow (B1) discharged through the third exhaust hole (184) and the fourth exhaust hole (185).

[0046] At this time, a flow (B2) is also generated in which the air supplied to the upper part of the grill plate (170) through the third exhaust hole (184) and the fourth exhaust hole (185) collides with each other at the upper part of the oil discharge nozzle (171) of the grill plate (170) and then diffuses to the outside of the grill body (100). However, since this air flow (B2) contains only purified air, there is no problem in which the smell or smoke generated when grilling meat diffuses into the room and pollutes the air inside the room.

[0047] In addition, since a portion of the air discharged from the first suction fan (121) and the second suction fan (122) is supplied to the upper portion of the grill plate (170) through the third discharge hole (184) and the fourth discharge hole (185), the air flow rate discharged through the first discharge hole (153) and the second discharge hole (154) becomes smaller than the air flow rate discharged from the first suction fan (121) and the second suction fan (122), so that the air supplied to the upper portion of the grill plate (170) through the first discharge hole (153) and the second discharge hole (154) is less likely to collide with each other at the upper portion of the drain nozzle (171) of the grill plate (170) to generate turbulence, and as a result, the suction force drawn into the drain nozzle (171) of the grill plate (170) is increased, so that the first air circulation flow and the second air circulation flow are firmly formed.

[0048] The flow rate ratio of the air flow (A) discharged from the first exhaust hole (153) and the second exhaust hole (154) and the flow rate ratio of the air flow (B) discharged from the third exhaust hole (184) and the fourth exhaust hole (185) can be adjusted according to the size ratio of the first and second exhaust holes (153, 154) and the third and fourth exhaust holes (184, 185), as well as the ratio of the distance (D1) between the partition wall (183) and the side plate (151, 152) and the distance (D2) between the partition wall (183) and the upper side wall (182) (see FIG. 3).

[0049] It is preferable that the flow rate ratio of the air flow (B) discharged from the third exhaust port (184) and the fourth exhaust port (185) to the flow rate of the air flow (A) discharged from the first exhaust port (153) and the second exhaust port (154) be in the range of 9:1 to 7:3. If the flow rate ratio exceeds 9:1, the double air curtain effect according to the present invention cannot be obtained, and if it is less than 7:3, the first air circulation flow and the second air circulation flow become weak, resulting in a decrease in purification efficiency.

[0050] According to the electric grill equipped with a dual air curtain type dual air purification circulation system according to the present invention as described above, by forming the air flow in the upper part of the grill plate (170) in a double manner, the phenomenon of air containing oil vapor, smoke, heat and odor generated in the upper part of the grill plate (170) from diffusing to the outside of the grill body (100) is completely blocked, while the first air circulation flow and the second air circulation flow by the first suction fan (121) and the second suction fan (122) can be firmly formed.

[0051] The embodiments disclosed in this specification and the attached drawings are intended solely to facilitate the technical concept of the present invention and are not intended to limit the scope of the present invention as defined in the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible.

Claims

1. Grill body; An oil pan installed on the lower inner side of the above grill body and storing water; A suction fan provided on both sides of the above oil pan; A heat sink spaced apart from the oil pan and the suction fan and connected to the upper portion thereof, having a through hole formed along the central length of the bottom plate, and having a plurality of first discharge holes and second discharge holes formed on both side plates spaced apart from both side walls of the grill body; and A grill plate is installed spaced apart from the upper part of the bottom plate of the heat sink so that the first exhaust hole and the second exhaust hole of the heat sink are positioned at the upper part, and has a drain nozzle formed along the central length direction; The above suction fan is composed of a first suction fan and a second suction fan located on both sides of the lower space of the grill body with the oil pan located at the lower part of the oil drain nozzle in between. The first suction fan sucks air containing vapor, smoke, heat, and odor generated from the upper part of the grill plate through the exhaust nozzle and supplies it back to the upper part of the grill plate through the first exhaust hole of the heat sink, thereby forming a first air circulation flow. The second suction fan sucks air containing oil vapor, smoke, heat, and odor generated from the upper part of the grill plate through the exhaust nozzle and supplies it back to the upper part of the grill plate through the second exhaust hole of the heat sink, thereby forming a second air circulation flow. In an electric grill equipped with a dual air purification circulation system, air containing oil vapor, smoke, heat and odor discharged from the oil drain nozzle by the suction force of the first and second suction fans is purified by contact with water stored in the oil pan located below the oil drain nozzle and then flows into the first and second suction fans. On both side walls of the above grill body, a partition wall is formed that extends downwards in a 'U' shape by a second flow diversion section at the upper end. A plurality of third discharge holes and fourth discharge holes are formed in the bulkheads of the above two side walls, respectively, and a first flow diversion part is formed protruding toward the inside of the grill body from the lower portion of the third discharge hole and the fourth discharge hole. An electric grill equipped with a dual air curtain type dual air purification circulation system, characterized in that the third exhaust hole and the fourth exhaust hole of the partition wall are positioned spaced apart from the first exhaust hole and the second exhaust hole of the heat sink above, and the partition wall is positioned between the two side walls of the grill body and the two side plates of the heat sink, so that the air discharged from the first suction fan and the second suction fan is divided into an air flow discharged through the first exhaust hole and the second exhaust hole by the first flow conversion unit and an air flow discharged through the third exhaust hole and the fourth exhaust hole by the second flow conversion unit, and the air flow discharged through the third exhaust hole and the fourth exhaust hole is positioned above the air flow discharged through the first exhaust hole and the second exhaust hole to form a double air curtain with air flow in the same direction.

2. In claim 1, An electric grill equipped with a dual air curtain type dual air purification circulation system, characterized in that the first flow diversion unit and the second flow diversion unit are formed as horizontal walls or as walls slanted downward toward the inside of the grill body.

3. In claim 1, An electric grill equipped with a dual air curtain type dual air purification circulation system, characterized in that the flow rate of air flow discharged from the first and second exhaust holes and the flow rate ratio of air flow discharged from the third and fourth exhaust holes are controlled according to the distance between the partition wall and the side plate of the heat sink and the distance ratio between the partition wall and the side wall of the grill body.

4. In claim 1, An electric grill equipped with a dual air curtain type dual air purification circulation system, characterized in that the flow rate ratio of the air flow discharged from the first and second exhaust holes and the air flow discharged from the third and fourth exhaust holes is controlled according to the size ratio between the first and second exhaust holes and the third and fourth exhaust holes.

5. In claim 1, An electric grill equipped with a dual air curtain type dual air purification circulation system, characterized in that the side wall of the grill body is formed with a lower side wall inclined toward the outside of the grill body and an upper side wall inclined toward the inside of the grill body.

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