Electric oven with double-air-curtain type double-air-purification circulating system

Abstract

The present invention relates to an electric oven having a double air curtain type double air purification circulation system, which is characterized in that both side walls of an oven main body are respectively provided with a partition plate, the partition plate is bent in a U shape from the upper end part through a second flow conversion part and extends downwards, the partition plates of both side walls are respectively provided with a plurality of third and fourth discharge holes, and the third and fourth discharge holes are communicated with the second flow conversion part. A first flow conversion part protruding from the lower parts of the third and fourth discharge holes to the interior of the oven main body is formed; air discharged from the first and second suction fans is divided into an air flow discharged through the first and second discharge holes by the first flow conversion part and an air flow discharged through the third and fourth discharge holes by the second flow conversion part. The air flow discharged through the third and fourth discharge holes is located above the air flow discharged through the first and second discharge holes, forming a dual air curtain.

Description

Technical Field

[0001] The present invention relates to an electric oven, and more particularly to an electric oven with an air purification circulation system, which can remove oil vapor and smoke generated during the cooking process of food. Background Art

[0002] Generally, a home or restaurant or the like is equipped with an electric grill composed of a grill formed with a plurality of oil drain holes and an oil pan provided at a lower portion of the grill to receive oil dripping from the oil drain holes.

[0003] For this type of electric grill, the oil produced during grilling will be discharged into the oil pan at the bottom through the oil drain holes of the grill, but a considerable amount of oil will still splash outside, polluting the area around the electric grill. In addition, the odor and smoke produced during grilling will spread into the room, causing indoor air pollution. In addition, since the heat from the grill is dissipated into the room during grilling, the grilling time is prolonged, which in turn leads to increased electricity consumption.

[0004] To solve these problems, refer to Figure 1 The inventor has developed and applied for an electric oven with a dual air purification circulation system and obtained authorization (refer to the following "Patent Document 1"). The electric oven is characterized in that the suction fan includes a first suction fan 121 and a second suction fan 122. The first suction fan 121 and the second suction fan 122 are located on both sides of the lower space of the oven body 100, separated by an oil pan 110 located below the oil discharge nozzle 171 of the baking pan 170. The first suction fan 121 inhales the air containing oil vapor, smoke, hot air and odor generated at the upper part of the baking pan 170 through the oil discharge nozzle 171, and supplies it to the upper part of the baking pan 170 again through the first exhaust hole 153 of the heat dissipation plate 150, thereby forming a first air circulation flow. The second suction fan 122 sucks in the air containing oil vapor, smoke, hot air and odor generated at the upper part of the baking pan 170 through the oil discharge nozzle 171, and supplies it to the upper part of the baking pan 170 again through the second discharge hole 154 of the heat dissipation plate 150, thereby forming a second air circulation flow. Through the suction force of the first suction fan 121 and the second suction fan 122, the air containing oil vapor, smoke, hot air and odor discharged from the oil discharge nozzle 171 will come into contact with the water stored in the oil pan 110 located below the oil discharge nozzle 171 and be purified, and then flow into the first suction fan 121 and the second suction fan 122.

[0005] However, the conventional electric oven disclosed in "Patent Document 1" has the following problems: Figure 1As shown by the black arrows in the figure, the air supplied to the upper part of the grilling pan 170 through the first exhaust hole 153 and the second exhaust hole 154 of the heat dissipation plate 150 collides with each other at the upper part of the oil discharge nozzle 171 of the grilling pan 170 and then diffuses to the outside of the oven body 100 instead of being completely sucked into the oil discharge nozzle 171 of the grilling pan 170. Therefore, the odor and smoke generated during barbecue diffuse into the room, causing the problem of indoor air pollution.

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

[0007] (1) Technical issues to be resolved

[0008] The present invention is proposed to solve the above-mentioned problems, and its purpose is to provide an electric oven with a double air curtain double air purification circulation system, which can completely prevent the air containing oil vapor, smoke, heat and odor generated during barbecue from diffusing to the outside of the oven body.

[0009] (2) Technical solution

[0010] The electric oven with a double air curtain type double air purification circulation system according to the present invention for solving the above problems comprises: an oven body; an oil pan installed on the inner side of the lower part of the oven body and storing water; an intake fan located on both sides of the oil pan; a heat dissipation plate separated and combined above the oil pan and the intake fan, with a through hole formed along the central length direction of the bottom plate, and two side plates separated from the two side walls of the oven body are respectively formed with a plurality of first and second exhaust holes; and a baking tray, separated and installed on the upper part of the bottom plate of the heat dissipation plate so that the first and second exhaust holes of the heat dissipation plate are located on the upper part of the baking tray, and an oil discharge nozzle is formed along the central length direction, the suction The fan includes a first suction fan and a second suction fan, the first suction fan and the second suction fan are located on both sides of the lower space of the oven main body, with the oil pan located below the oil discharge nozzle interposed therebetween. The first suction fan sucks in the air containing oil vapor, smoke, hot air and odor generated at the upper part of the baking pan through the oil discharge nozzle, and supplies it to the upper part of the baking pan again through the first discharge hole of the heat dissipation plate, thereby forming a first air circulation flow. The second suction fan sucks in the air containing oil vapor, smoke, hot air and odor generated at the upper part of the baking pan through the oil discharge nozzle, and supplies it to the upper part of the baking pan again through the second discharge hole of the heat dissipation plate, thereby forming a The second air circulation flow is formed, and the air containing oil vapor, smoke, hot air and odor discharged from the oil discharge nozzle is in contact with the water stored in the oil pan located below the oil discharge nozzle by the suction force of the first suction fan and the second suction fan and is purified, and then flows into the first suction fan and the second suction fan. It is characterized in that the two side walls of the oven body are respectively formed with partitions, and the partitions are bent in a "U" shape from the upper end through the second flow conversion part and extend downward, and the partitions of the two side walls are respectively formed with a plurality of third discharge holes and a plurality of fourth discharge holes, and a first discharge hole protruding from the lower part of the third discharge hole and the fourth discharge hole toward the interior of the oven body is formed. A flow conversion portion, the third exhaust hole and the fourth exhaust hole of the partition are separated and arranged above the first exhaust hole and the second exhaust hole of the heat dissipation plate, and the partition is located between the two side walls of the oven body and the two side plates of the heat dissipation plate. The air discharged from the first suction fan and the second suction fan is divided into the air flow discharged through the first exhaust hole and the second exhaust hole through the first flow conversion portion and the air flow discharged through the third exhaust hole and the fourth exhaust hole through the second flow conversion portion. The air flow discharged through the third exhaust hole and the fourth exhaust hole is located above the air flow discharged through the first exhaust hole and the second exhaust hole, forming a double air curtain.

[0011] The first flow conversion portion and the second flow conversion portion may be formed by a horizontal wall, or may be formed by a wall inclined downward toward the inside of the oven main body.

[0012] The ratio of the flow rate of air discharged from the first exhaust hole and the second exhaust hole to the flow rate of air discharged from the third exhaust hole and the fourth exhaust hole can be adjusted according to the ratio of the distance between the partition and the side plate of the heat dissipation plate and the distance between the partition and the side wall of the oven body.

[0013] In addition, the ratio of the flow rate of the air discharged from the first and second discharge holes to the flow rate of the air discharged from the third and fourth discharge holes is adjusted according to the size ratio between the first and second discharge holes and the third and fourth discharge holes.

[0014] Preferably, the side wall of the oven body includes a lower side wall formed by tilting toward the outside of the oven body and an upper side wall formed by tilting toward the inside of the oven body.

[0015] (3) Beneficial effects

[0016] The electric oven with a double air curtain type double air purification circulation system according to the present invention forms double air flows on the upper part of the baking tray, thereby completely blocking the phenomenon that the air containing oil vapor, smoke, heat and odor generated on the upper part of the baking tray diffuses to the outside of the oven body, thereby being able to form a stable first air circulation flow of the first suction fan and the second air circulation flow of the second suction fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view illustrating air circulation flow of an electric oven according to a conventional art.

[0018] Figure 2 It is a cross-sectional view showing the air circulation flow of the electric oven with the double air curtain type double air purification circulation system according to the present invention.

[0019] Figure 3 It is enlarged to show Figure 2 Partial cross-sectional view of section "C".

[0020] Description of reference numerals:

[0021] 100: Oven body 101, 102: Side walls

[0022] 110: Oil pan 121: First suction fan

[0023] 122: Second suction fan 150: Heat sink

[0024] 151, 152: Side plates 153: First discharge hole

[0025] 154: Second discharge hole 155: Bottom plate

[0026] 157: Through hole 158: Flange

[0027] 161: Heater 170: Baking tray

[0028] 171: Oil drain nozzle 181: Lower side wall

[0029] 182: Upper side wall 183: Partition

[0030] 184: Third discharge hole 185: Fourth discharge hole

[0031] 186: First flow conversion section 187: Second flow conversion section DETAILED DESCRIPTION

[0032] The electric oven with a double air curtain type double air purification circulation system according to the present invention will be described in detail below with reference to the accompanying drawings. However, detailed descriptions of known functions and structures that may unnecessarily obscure the gist of the present invention will be omitted.

[0033] Figure 2 It is a cross-sectional view showing the air circulation flow of the electric oven with the double air curtain type double air purification circulation system according to the present invention.

[0034] Reference Figure 2 The electric oven with a dual air curtain type dual air purification circulation system according to the present invention includes an oven body 100, an oil pan 110 installed on the lower inner side of the oven body 100 and storing water, suction fans 121 and 122 located on both sides of the oil pan 110, a heat dissipation plate 150 separated and combined above the oil pan 110 and the suction fans 121 and 122, a baking tray 170 separated and installed above the heat dissipation plate 150, and a heater 161 located below the baking tray 170.

[0035] The grilling pan 170 is formed with an oil discharge nozzle 171 along the central length direction.

[0036] In the present invention, the oil discharge nozzle 171 is not only used to gather the oil generated during the cooking process to the center of the baking pan 170 and discharge it to the oil pan 110 below, but also used to discharge the air containing oil vapor, smoke, heat and odor generated on the upper part of the baking pan 170 to the oil pan 110 located below the oil discharge nozzle 171.

[0037] The heat dissipation plate 150 is formed with a through hole 157 along the central length direction of the bottom plate 155, and is penetrated and combined with the oil discharge nozzle 171 of the baking tray 170. The heat dissipation plate 150 separates the upper space where the heater 161 is located from the lower space where the suction fans 121 and 122 are located, thereby preventing the heat generated by the heater 161 from causing the suction fans 121 and 122 to be heated and damaged.

[0038] In addition, the upper longitudinal side plates 151 and 152 of the outer edge of the heat dissipation plate 150 are respectively formed with a plurality of first exhaust holes 153 and a second exhaust hole 154, and the air blown by the suction fans 121 and 122 is supplied to the upper part of the baking tray 170 to form an air curtain (refer to FIG. Figure 2 Arrow "A").

[0039] There is no particular limitation on the type of the suction fans 121 and 122 , but long strip fans are more suitable for forming a uniform air curtain on the upper portion of the baking tray 170 .

[0040] In the present invention, the suction fans 121 and 122 include a first suction fan 121 and a second suction fan 122. The first suction fan 121 and the second suction fan 122 are located on both sides of the lower space of the oven body 100, separated by an oil pan 110 located below the oil discharge nozzle 171.

[0041] Therefore, the first suction fan 121 sucks in the air containing oil vapor, smoke, hot air and odor generated on the upper part of the baking tray 170 through the oil discharge nozzle 171, and supplies it to the upper part of the baking tray 170 again through the first discharge hole 153 of the heat dissipation plate 150, thereby forming a first air circulation flow. At the same time, the second suction fan 122 sucks in the air containing oil vapor, smoke, hot air and odor generated on the upper part of the baking tray 170 through the oil discharge nozzle 171, and supplies it to the upper part of the baking tray 170 again through the second discharge hole 154 of the heat dissipation plate 150, thereby forming a second air circulation flow.

[0042] At this time, the air containing oil vapor, smoke, heat and odor discharged from the oil discharge nozzle 171 flows toward the oil pan 110 located below the oil discharge nozzle 171 due to the suction force of the first suction fan 121 and the second suction fan 122, and is purified after coming into contact with the water stored in the oil pan 110, and then flows into the first suction fan 121 and the second suction fan 122. For reference, Figure 2 The color of the arrow in the middle indicates the degree of air purification (the darker the color, the more serious the air pollution).

[0043] In the present invention, the middle portions of the two side walls 101 and 102 of the oven body 100 protrude outward and are generally curved. To this end, the lower side walls 181 of the two side walls 101 and 102 are angled toward the exterior of the oven body 100, while the upper side walls 182 are angled toward the interior of the oven body 100. The curved shape of the two side walls 101 and 102 reduces the generation of local eddies, lowering flow resistance and noise, and facilitating smoother circulation of the first and second air flows.

[0044] The oven body 100's two side walls 101 and 102 are formed with a partition 183 that bends downward from the upper end of the upper side wall 182 in a U-shaped pattern. Multiple third and fourth outlet holes 184 and 185 are formed in the partition 183 of each side wall 101 and 102, respectively. A first flow converter 186 protruding toward the baking tray 170 is formed below the third and fourth outlet holes 184 and 185. Furthermore, the upper ends of the upper side wall 182 and the partition 183 are connected by a second flow converter 187.

[0045] The first flow conversion portion 186 and the second flow conversion portion 187 may be formed of a horizontal wall, or may be formed of a wall inclined downward toward the grill pan 170 side.

[0046] The upper surface of the first flow conversion portion 186 is provided with a flange 158 formed by bending outward from the upper ends of the two side plates 151 and 152 of the heat dissipation plate 150, so that the third discharge hole 184 and the fourth discharge hole 185 of the partition 183 are located on the upper side of the first discharge hole 153 and the second discharge hole 154 of the heat dissipation plate 150.

[0047] In addition, the partition plate 183 is located between the upper side wall 182 and the two side plates 151 and 152 of the heat dissipation plate 150. Therefore, the air discharged from the first suction fan 121 and the second suction fan 122 is divided into the air flow A discharged through the first discharge hole 153 and the second discharge hole 154 through the first flow conversion portion 186 and the air flow B discharged through the third discharge hole 184 and the fourth discharge hole 185 through the second flow conversion portion 187. The air flow B discharged through the third discharge hole 184 and the fourth discharge hole 185 is located above the air flow A discharged through the first discharge hole 153 and the second discharge hole 154, forming a double air curtain (refer to Figure 2 Arrow "B").

[0048] Therefore, after the air supplied to the upper part of the baking tray 170 through the first exhaust hole 153 and the second exhaust hole 154 collides with each other at the upper part of the oil discharge nozzle 171 of the baking tray 170, the flow that would originally diffuse to the outside of the oven body 100 is blocked by the air flow B1 discharged through the third exhaust hole 184 and the fourth exhaust hole 185, and is sucked into the oil discharge nozzle 171 of the baking tray 170 together with the air flow B1 discharged through the third exhaust hole 184 and the fourth exhaust hole 185.

[0049] At this time, the air supplied to the upper portion of grilling pan 170 through third and fourth exhaust holes 184, 185 collides with each other above oil discharge nozzle 171 of grilling pan 170, generating flow B2 that diffuses toward the outside of oven body 100. However, this air flow B2 consists only of purified air, and therefore does not cause the smell and smoke generated during grilling to diffuse into the room and pollute the indoor air.

[0050] In addition, part of the air exhausted from the first suction fan 121 and the second suction fan 122 is supplied to the upper part of the baking tray 170 through the third exhaust hole 184 and the fourth exhaust hole 185, so the air flow rate exhausted through the first exhaust hole 153 and the second exhaust hole 154 is less than the air flow rate exhausted from the first suction fan 121 and the second suction fan 122, which reduces the possibility of the air supplied to the upper part of the baking tray 170 through the first exhaust hole 153 and the second exhaust hole 154 colliding with each other at the upper part of the oil discharge nozzle 171 of the baking tray 170 to generate turbulence, thereby enhancing the suction force of the oil discharge nozzle 171 sucked into the baking tray 170, making the first air circulation flow and the second air circulation flow more stable.

[0051] The ratio of the flow rate of the air flow A discharged from the first discharge hole 153 and the second discharge hole 154 to the flow rate of the air flow B discharged from the third discharge hole 184 and the fourth discharge hole 185 can be adjusted according to the size ratio of the first and second discharge holes 153, 154 and the third and fourth discharge holes 184, 185, and the ratio of the distance D1 between the partition 183 and the side plates 151, 152 and the distance D2 between the partition 183 and the upper side wall 182 (refer to Figure 3 ).

[0052] The ratio of the flow rate of the air flow A discharged from the first and second discharge holes 153 and 154 to the flow rate of the air flow B discharged from the third and fourth discharge holes 184 and 185 is preferably controlled within a range of 9:1 to 7:3. When the flow rate ratio exceeds 9:1, the dual air curtain effect according to the present invention cannot be achieved. When the flow rate ratio is less than 7:3, the first and second air circulation flows are weakened, reducing purification efficiency.

[0053] In summary, the electric oven with a dual air curtain type dual air purification circulation system according to the present invention forms a dual air flow on the upper part of the baking tray 170, which completely blocks the air containing oil vapor, smoke, heat and odor generated on the upper part of the baking tray 170 from diffusing to the outside of the oven body 100, and forms a stable first air circulation flow and a second air circulation flow through the first suction fan 121 and the second suction fan 122.

[0054] The embodiments disclosed in this specification and the accompanying drawings are only intended to facilitate understanding of the technical concept of the present invention and are not intended to limit the scope of the present invention as described in the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments may be derived.

Claims

1. An electric oven with a double air curtain double air purification circulation system, comprising: Oven body; an oil pan, mounted on the lower inner side of the oven body and storing water; Suction fans are located on both sides of the oil pan; a heat dissipation plate, spaced apart and coupled to the upper portion of the oil pan and the suction fan, having a through hole formed along the central length direction of the bottom plate, and having a plurality of first and second discharge holes formed on two side plates spaced apart from the two side walls of the oven body; as well as A baking tray is installed on 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 on the upper part of the baking tray, and an oil discharge nozzle is formed along the central length direction. The suction fan includes a first suction fan and a second suction fan, and the first suction fan and the second suction fan are located on both sides of the lower space of the oven body across the oil pan located below the oil discharge nozzle. The first suction fan sucks the air containing oil vapor, smoke, heat and odor generated on the upper part of the baking pan through the oil discharge nozzle, and supplies it to the upper part of the baking pan again through the first discharge hole of the heat dissipation plate, thereby forming a first air circulation flow. The second suction fan sucks the air containing oil vapor, smoke, heat and odor generated on the upper part of the baking pan through the oil discharge nozzle, and supplies it to the upper part of the baking pan again through the second discharge hole of the heat dissipation plate, thereby forming a second air circulation flow. The air containing oil vapor, smoke, heat, and odor discharged from the oil discharge nozzle contacts the water stored in the oil pan located below the oil discharge nozzle through the suction force of the first suction fan and the second suction fan and is purified, and then flows into the first suction fan and the second suction fan, characterized in that: The two side walls of the oven body are respectively formed with partitions, and the partitions are bent in a "U" shape from the upper end through the second flow conversion part and extend downward. The partitions of the two side walls are respectively formed with a plurality of third discharge holes and a plurality of fourth discharge holes, and a first flow conversion portion is formed which protrudes from the lower portions of the third discharge holes and the fourth discharge holes toward the interior of the oven body. The third exhaust hole and the fourth exhaust hole of the partition are separated and arranged above the first exhaust hole and the second exhaust hole of the heat dissipation plate, and the partition is located between the two side walls of the oven body and the two side plates of the heat dissipation plate. The air exhausted from the first suction fan and the second suction fan is divided into air flow discharged through the first exhaust hole and the second exhaust hole through the first flow conversion part and air flow discharged through the third exhaust hole and the fourth exhaust hole through the second flow conversion part. The air flow discharged through the third exhaust hole and the fourth exhaust hole is located above the air flow discharged through the first exhaust hole and the second exhaust hole, forming air flow in the same direction, thereby forming a double air curtain.

2. The electric oven with double air curtain double air purification circulation system according to claim 1, characterized in that: The first flow conversion portion and the second flow conversion portion are formed by a horizontal wall, or by a wall inclined downward toward an interior of the oven main body.

3. The electric oven with double air curtain double air purification circulation system according to claim 1, characterized in that: The ratio of the flow rate of air discharged from the first exhaust hole and the second exhaust hole to the flow rate of air discharged from the third exhaust hole and the fourth exhaust hole is adjusted according to the ratio of the distance between the partition and the side plate of the heat dissipation plate and the distance between the partition and the side wall of the oven body.

4. The electric oven with a double air curtain double air purification circulation system according to claim 1, characterized in that: The ratio of the flow rate of the air discharged from the first and second discharge holes to the flow rate of the air discharged from the third and fourth discharge holes is adjusted according to the size ratio between the first and second discharge holes and the third and fourth discharge holes.

5. The electric oven with double air curtain double air purification circulation system according to claim 1, characterized in that: The side wall of the oven body includes a lower side wall inclined toward the outside of the oven body and an upper side wall inclined toward the inside of the oven body.

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