Cooking appliance

Abstract

This cooking appliance comprises: an upper plate on which a cooking container is placed; a lower plate provided beneath the upper plate so as to include a discharge hole, the lower plate comprising multiple electronic components and a heat sink for dissipating heat generated from the multiple electronic components; a sheet coil disposed on the lower plate such that a gap is formed between same and the upper plate; a scroll including a suction port and a discharge port, the scroll having a channel formed such that air suctioned through the suction port is discharged through the discharge hole and the discharge port, thereby dissipating heat from the seat coil and the heat sink; and a fan provided inside the scroll to generate a suction force. The scroll comprises: a lower scroll provided beneath the scroll such that the fan has a first expansion angle, the lower scroll having a lower channel formed such that air suctioned through the suction port is guided to the heat sink; an upper scroll provided above the lower scroll such that the fan has a second expansion angle larger than the first expansion angle, the upper scroll having an upper channel formed such that air suctioned through the suction port is guided to the gap; and a divider for dividing the interior of the scroll into the lower channel and the upper channel.

Description

Cooking appliances

[0001] The disclosed invention relates to a cooking appliance capable of simultaneously dissipating heat from a sheet coil and a heat sink.

[0002] A cooking appliance is a device designed to heat and cook food or other food items. It can provide various cooking-related functions, such as heating, defrosting, drying, and sterilizing the food. Cooking appliances may include cooktops, which use electricity or gas to heat cooking containers containing food.

[0003] A gas cooktop is a gas range that cooks food by turning a lever to ignite gas from a small generator and then burning it.

[0004] An electric cooktop is an induction cooktop that uses electricity to generate an electromagnetic field in an internal coil, and uses the laws of electromagnetic induction to induce eddy currents in a cooking vessel to generate heat, which is then used to cook food.

[0005] One aspect of the disclosed invention provides a cooking appliance capable of simultaneously dissipating heat from a sheet coil and a heat sink using a single fan.

[0006] In addition, a cooking appliance is provided in which the interior of a scroll forming a path for air drawn in by a fan to dissipate heat from a sheet coil and a heat sink is divided into a lower path and an upper path by a divider.

[0007] In addition, a cooking appliance is provided in which the scrolls are divided into a lower scroll and an upper scroll, each having a different structure so that the expansion angles of the fan in the lower and upper passages divided by the divider are different from each other.

[0008] In addition, a cooking appliance is provided in which the length from the center of the fan in the upper passage to the radial direction of the fan is longer than the length from the center of the fan in the lower passage to the radial direction of the fan so that the expansion angle of the fan in the upper passage is greater than that in the lower passage.

[0009] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0010] A cooking appliance according to the invention disclosed includes a top plate on which a cooking vessel is placed, a lower plate having a discharge hole formed in a lower portion of the top plate, a plurality of electrical components, and a heat sink for dissipating heat generated from the plurality of electrical components, a sheet coil disposed on the lower plate so as to form a gap between the lower plate and the top plate, a suction port, and a discharge port, and a scroll forming a path for dissipating air sucked into the suction port through the discharge hole and the discharge port to dissipate heat to the sheet coil and the heat sink, and a fan disposed inside the scroll to generate a suction force. The scroll includes a lower scroll having a fan at a lower portion of the scroll having a first expansion angle and forming a lower passage that guides air sucked into the suction port to the heat sink, an upper scroll having a fan at an upper portion of the lower scroll having a second expansion angle greater than the first expansion angle and forming an upper passage that guides air sucked into the suction port to the gap, and a divider that divides the inside of the scroll into the lower passage and the upper passage.

[0011] A cooking appliance according to the invention includes a top plate on which a cooking vessel is placed, a lower plate having a discharge hole formed in a lower portion of the top plate, a plurality of electrical components, and a heat sink for dissipating heat generated from the plurality of electrical components, a sheet coil disposed on the lower plate so as to form a gap between the lower plate and the top plate, a scroll having an intake port and an exhaust port, and forming a flow path for discharging air sucked into the intake port through the exhaust port and the exhaust port to dissipate heat to the sheet coil and the heat sink, and a fan provided inside the scroll to generate suction force. The flow path includes a lower flow path provided in a lower portion of the scroll, and air sucked into the intake port is discharged through the exhaust port to dissipate heat to the heat sink, and an upper flow path provided in an upper portion of the lower flow path, and air sucked into the intake port is discharged through the exhaust hole to dissipate heat to the sheet coil.

[0012] FIG. 1 is a drawing showing a top view of a cooktop of a cooking appliance according to one embodiment.

[0013] FIG. 2 is a drawing showing the cooktop of the cooking appliance illustrated in FIG. 1 from another direction.

[0014] FIG. 3 is a drawing showing a cooktop of a cooking appliance according to one embodiment as viewed from below.

[0015] FIG. 4 is a drawing illustrating a state in which a top plate is separated from a cooktop of a cooking appliance according to one embodiment.

[0016] FIG. 5 is a drawing illustrating a state in which a sheet coil is separated from a sheet coil mounting plate of a lower plate in a cooktop of a cooking appliance according to one embodiment.

[0017] FIG. 6 is a drawing showing a lower plate of a cooktop of a cooking appliance according to one embodiment with a sheet coil mounting plate separated.

[0018] Fig. 7 is a drawing showing the guide duct separated from Fig. 5.

[0019] FIG. 8 is a drawing illustrating a combination of a lower scroll and an upper scroll according to one embodiment.

[0020] FIG. 9 is a drawing illustrating a state in which the lower scroll and the upper scroll of a scroll are separated according to one embodiment.

[0021] Fig. 10 is a plan view of a state in which a lower scroll and an upper scroll are combined according to one embodiment.

[0022] Fig. 11 is a cross-sectional view taken along line A-A' of Fig. 8.

[0023] Fig. 12 is a cross-sectional view showing the inside of a scroll divided into a lower passage and an upper passage by a divider according to one embodiment.

[0024] Fig. 13 is a cross-sectional view of a cooktop of a cooking appliance according to one embodiment.

[0025] FIG. 14 is a diagram illustrating the flow of air sucked into an intake according to one embodiment, moving along a first path to dissipate heat to a heat sink.

[0026] FIG. 15 is a diagram illustrating the flow of air drawn into an intake according to one embodiment, moving along a second path to dissipate heat from a sheet coil, and being discharged.

[0027] It should be understood that the various embodiments of the present disclosure and the terminology used therein are not intended to limit the technical features described in the present disclosure to specific embodiments, but rather include various modifications, equivalents, or substitutes of the embodiments.

[0028] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0029] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0030] In this disclosure, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in the corresponding phrase, or all possible combinations thereof.

[0031] The term “and / or” includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0032] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0033] In addition, terms such as 'front', 'rear', 'top', 'bottom', 'side', 'left', 'right', 'upper', and 'lower' used in the present disclosure are defined based on the drawings, and the shape and position of each component are not limited by these terms.

[0034] The terms “include” or “have” are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in the present disclosure, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0035] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0036] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0037] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0038] FIG. 1 is a drawing illustrating a top view of a cooktop of a cooking appliance according to one embodiment. FIG. 2 is a drawing illustrating the cooktop of the cooking appliance illustrated in FIG. 1 from another direction. FIG. 3 is a drawing illustrating a bottom view of a cooktop of a cooking appliance according to one embodiment. FIG. 4 is a drawing illustrating a top plate separated from a cooktop of a cooking appliance according to one embodiment. FIG. 5 is a drawing illustrating a sheet coil separated from a sheet coil mounting plate of a lower plate of a cooktop of a cooking appliance according to one embodiment. FIG. 6 is a drawing illustrating a lower plate of a cooktop of a cooking appliance from which a sheet coil mounting plate has been separated according to one embodiment. FIG. 7 is a drawing illustrating a guide duct separated from FIG. 5.

[0039] As illustrated in FIGS. 1 to 7, the cooking appliance may be an induction cooktop that uses electricity. The cooking appliance may include a cooktop (10). The cooktop (10) may be an induction cooktop that is an electric cooktop. The cooktop (10) may include a top plate (20) on which a cooking vessel (1) is placed. The top plate (20) may be provided so that the cooking vessel (1) is placed thereon. The top plate (20) may be provided with a glass material, for example, ceramic glass.

[0040] The cooktop (10) may include a lower plate (30) provided below the upper plate (10). The lower plate (30) may be provided below the upper plate (20). The lower plate (30) may be provided to have a square shape. The lower plate (30) may include a lower surface (31) and a side wall (34). A space may be formed inside the lower plate (30) by the lower surface (31) and the side wall (34). A plurality of electrical components (11) and a heat sink (13) may be provided in the space inside the lower plate (30). The plurality of electrical components (11) and the heat sink (13) may be provided above the lower surface (31). When the cooktop (10) is in operation, heat is generated from a plurality of electrical components (11), and a heat sink (13) may be provided next to the plurality of electrical components (11) to dissipate the heat generated from the plurality of electrical components (11).

[0041] A sheet coil (40) may be placed on top of a plurality of electrical components (11) and a heat sink (13) provided in a space inside the lower plate (30). A current whose magnitude changes over time may be applied to the sheet coil (40). As the current is applied to the sheet coil (40), a magnetic field may be formed around the sheet coil (40). As the current applied to the sheet coil (40) changes, the magnetic field formed around the sheet coil (40) may also change. An eddy current may flow on the surface of a cooking vessel (1) placed on the upper plate (20) according to a change in the magnetic field, and the cooking vessel (1) may be heated by the eddy current.

[0042] A plurality of exhaust holes (32, 33, 35) may be provided on the lower surface (31) and side wall (34) of the lower plate (30). Air sucked in through the intake port (91) formed in the intake portion (90) of the scroll (50) may be discharged to the outside through the plurality of exhaust holes (32, 33, 35) provided on the lower surface (31) and side wall (34) of the lower plate (30) after dissipating heat through the plurality of electrical components (11), the heat sink (13), and the sheet coil (40).

[0043] The plurality of exhaust holes (32, 33, 35) may include a first exhaust hole (32) formed in the lower surface (31) of the lower plate (30). The first exhaust hole (32) may be formed with a plurality of holes. Air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) and dissipating heat from the heat sink (13) may be discharged to the outside through the first exhaust hole (32). The number of the first exhaust holes (32) may correspond to the number of heat sinks (13). In order to dissipate heat from the heat sink (13) more efficiently, a guide duct (15) may be provided on the upper portion of the heat sink (13). Air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) can pass through the guide passage (17) formed inside the guide duct (15) and dissipate heat to the heat sink (13). A detailed description of the flow of air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50), dissipating heat to the heat sink (13), and then discharged to the outside through the first discharge hole (32) will be provided below.

[0044] The plurality of exhaust holes (32, 33, 35) may include a second exhaust hole (35) formed in the side wall (34) of the lower plate (30). The second exhaust hole (35) may be formed with a plurality of holes. Air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) and dissipating heat from the sheet coil (40) may be discharged to the outside through the second exhaust hole (35). Specifically, air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) and dissipating heat from the sheet coils (40) arranged on the left and right sides may be discharged to the outside through the second exhaust hole (35). In addition, air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) and cooling the plurality of electrical components (11) may be discharged to the outside through the second exhaust hole (35). A detailed description of the flow of air that is sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50), dissipates heat to the sheet coil (40) and multiple electric components (11) arranged on the left and right, and then is discharged to the outside through the second discharge hole (35) will be provided below.

[0045] The plurality of exhaust holes (32, 33, 35) may include a third exhaust hole (33) formed in the lower surface (31) of the lower plate (30). The third exhaust hole (33) may be formed by a plurality of holes. Air that has been sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) and cooled the sheet coil (40) may be discharged to the outside through the third exhaust hole (33). Specifically, air that has been sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) and cooled the sheet coil (40) disposed in the center may be discharged to the outside through the third exhaust hole (33). A detailed description of the flow of air that is sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50), dissipates heat to the sheet coil (40) placed in the center, and then is discharged to the outside through the third discharge hole (33) will be provided below.

[0046] In order to allow the sheet coil (40) to be placed on the upper portion of the plurality of electrical components (11) and the heat sink (13), the lower plate (30) may include a sheet coil mounting plate (36) on which the sheet coil (40) is mounted. The sheet coil mounting plate (36) may be provided on the upper portion of the plurality of electrical components (11) and the heat sink (13). The sheet coil (40) mounted on the sheet coil mounting portion (36) may be positioned so that a gap (G) is formed with the upper plate (20). The gap (G) may be a space between the sheet coil (40) and the upper plate (20). In the gap (G), which is the space between the sheet coil (40) and the upper plate (20), no structure that impedes the flow of air may be placed so that the air can flow smoothly. Air can flow through the gap (G) formed between the top plate (20) and the seat coil (40) to dissipate heat from the seat coil (40). A detailed description of the flow of air that is drawn in from the outside, passes through the gap (G) formed between the top plate (20) and the seat coil (40), and dissipates heat from the seat coil (40) will be provided below. (See Fig. 13)

[0047] The sheet coil mounting plate (36) on which the sheet coil (40) is mounted may include a discharge hole (37). The discharge hole (37) may be formed with a plurality of holes. The discharge hole (37) may allow air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) to be discharged into the gap (G) formed between the upper plate (20) and the sheet coil (40) to dissipate heat from the sheet coil (40). A detailed description of the flow of air sucked in through the suction port (91) formed in the suction portion (90) of the scroll (50) to be discharged into the gap (G) formed between the upper plate (20) and the sheet coil (40) through the discharge hole (37) will be provided below.

[0048] A scroll (50) having a fan (F) installed therein may be provided on the lower plate (30). The fan (F) provided inside the scroll (50) may generate suction force to suck in external air. The fan (F) may be provided as a turbofan. (See Fig. 10)

[0049] The scroll (50) can form a path (67, 77) that guides the air sucked in by the fan (F) to the plurality of electrical components (11), the heat sink (13), and the sheet coil (40) so that the air radiates heat from the plurality of electrical components (11), the heat sink (13), and the sheet coil (40). The scroll (50) can be provided to have a number corresponding to the number of heat sinks (13). (See Fig. 10)

[0050] FIG. 8 is a diagram illustrating a state in which a lower scroll and an upper scroll of a scroll are combined according to one embodiment. FIG. 9 is a diagram illustrating a state in which a lower scroll and an upper scroll of a scroll are separated according to one embodiment. FIG. 10 is a plan view of a state in which a lower scroll and an upper scroll are combined according to one embodiment. FIG. 11 is a cross-sectional view taken along line A-A' of FIG. 12 is a cross-sectional view illustrating a state in which the interior of a scroll is divided into a lower passage and an upper passage by a divider according to one embodiment.

[0051] As illustrated in FIGS. 8 to 12, the scroll (50) may include an intake port (91) through which air is sucked in, and an exhaust port (65) through which air sucked in through the intake port (91) is discharged. The scroll (50) may include a lower scroll (60) provided at a lower portion of the scroll (50). The scroll (50) may include an upper scroll (70) provided at an upper portion of the lower scroll (60). The lower scroll (60) and the upper scroll (70) may be combined. The scroll (50) may include a divider (80) that divides the inside of the scroll (50) into a lower portion and an upper portion. The scroll (50) may include a suction portion (90) coupled to a lower portion of the lower scroll (60). A suction port (91) through which air is sucked in may be formed in the suction portion (90). The suction port (91) may be formed in multiple portions.

[0052] The lower scroll (60) may include a lower installation portion (61) in which a fan (F) is installed. The lower installation portion (61) may be formed in a circular shape. A suction portion (90) having a suction port (91) formed therein may be coupled to the lower installation portion (61). The lower installation portion (61) may form a first lower passage (68) which is a part of a lower passage (67) formed by the lower scroll (60) and the divider (80). That is, the first lower passage (68) may be formed by the lower installation portion (61) and the divider (80). Air sucked into the suction port (91) by the fan (F) may be introduced into the first lower passage (68) formed by the lower installation portion (61) and the divider (80).

[0053] The lower scroll (60) may include a lower connecting duct (63) connected to the lower installation part (61). The lower connecting duct (63) may be formed with an outlet (65) through which air sucked into the scroll (50) is discharged. The lower connecting duct (63) may form a second lower passage (69) which is a part of a lower passage (67) formed by the lower scroll (60) and the divider (80). That is, the second lower passage (69) may be formed by the lower connecting duct (63) and the divider (80). The second lower passage (69) may be communicated with the first lower passage (68). The lower passage (67) including the first lower passage (68) and the second lower passage (69) may be communicated with the outlet (65). The air sucked into the intake port (91) by the fan (F) can pass through the first lower passage (68) and the second lower passage (69) and be discharged through the discharge port (65). That is, the air sucked into the intake port (91) by the fan (F) can pass through the lower passage (67) and be discharged through the discharge port (65). The air discharged through the discharge port (65) can pass through the guide passage (17) inside the guide duct (15) connected to the scroll (50) and dissipate heat to the heat sink (13). That is, the air sucked into the intake port (91) by the fan (F) can be guided to the heat sink (13) through the lower passage (67). (See FIGS. 6 and 7)

[0054] The upper scroll (70) may include an upper installation portion (71) in which a fan (F) is installed. The upper installation portion (71) may be formed in a circular shape. The lower installation portion (61) of the lower scroll (60) may be coupled to the lower portion of the upper installation portion (71). The upper installation portion (71) may form a first upper passage (78) which is a part of an upper passage (77) formed by the upper scroll (70) and the divider (80). That is, the first upper passage (78) may be formed by the upper installation portion (71) and the divider (80). To explain this in more detail, the upper passage (77) may be formed by the upper scroll (70), the divider (80), and the sheet coil mounting plate (36, see FIG. 5). Accordingly, the first upper passage (78) can be formed by the upper installation part (71), the divider (80), and the sheet coil mounting plate (36, see Fig. 5). Hereinafter, for convenience of explanation, the upper passage (77) will be described as being formed by the upper scroll (70) and the divider (80). Air sucked into the intake port (91) by the fan (F) can be introduced into the first upper passage (78) formed by the upper installation part (71) and the divider (80).

[0055] The upper scroll (70) may include an upper connecting duct (73) connected to the upper installation part (71). An opening (75) may be formed in the upper connecting duct (73) through which air sucked into the scroll (50) is discharged into the space inside the lower plate (30). The upper connecting duct (73) may form a second upper passage (79) which is a part of an upper passage (77) formed by the upper scroll (70) and the divider (80). That is, the second upper passage (79) may be formed by the upper connecting duct (73) and the divider (80). The second upper passage (79) may be communicated with the first upper passage (78). Air sucked into the suction port (91) by the fan (F) may pass through the first upper passage (78) and flow into the second upper passage (79). The second upper passage (79) can be closed by a lower connecting duct (63) at the opposite end of the portion communicating with the first upper passage (78). Air flowing through the second upper passage (79) can be discharged into the space inside the lower plate (30) through the opening (75) to dissipate heat from a plurality of electrical components (11). (See FIGS. 6 and 7)

[0056] A divider (80) may be provided in the upper scroll (70). The divider (80) may divide the inside of the scroll (50) into a lower passage (67) and an upper passage (77). The divider (80) may be provided to be positioned at the center of the fan (F) in the vertical direction of the fan (F). Although the divider (80) is illustrated in the drawing as being positioned at the center of the fan (F) in the vertical direction of the fan (F), it is not limited thereto. That is, the divider (80) may be positioned above the center of the fan (F) rather than at the center of the fan (F) in the vertical direction of the fan (F), or may be positioned below the center of the fan (F).

[0057] Since the cooktop (10) of the cooking appliance uses a sheet coil (40), the air sucked into the intake port (91) by the fan (F) can radiate heat to both the heat sink (13) and the sheet coil (40). However, the flow resistance of the flow path for radiating heat to the heat sink (13) and the flow resistance of the flow path for radiating heat to the sheet coil (40) may be different from each other. That is, since the flow path for radiating heat to the heat sink (13) only needs to radiate heat to the heat sink (13), the flow path may be configured to guide air toward the heat sink (13). However, since the sheet coil (40) has an area similar to the entire area of ​​the lower plate (30), air cannot be guided to any one place, and the sheet coil (40) can be radiated through forced convection of the air. As described above, the scroll (50) may be configured to be divided into a lower scroll (60) and an upper scroll (70) to supply air using one fan (F) to the heat sink (13) having different resistances and the sheet coil (40). (See FIGS. 5 and 7)

[0058] In order to supply air using one fan (F) to each of the two passages for dissipating heat from the heat sink (13) and the passage for dissipating the sheet coil (40), which are two passages having different resistances, the interior of the scroll (50) may be divided into a lower passage (67) and an upper passage (77) by a divider (80). Among the lower passages (67) and the upper passages (77), the lower passage (67) may be used as a passage for dissipating heat from the heat sink (13), and the upper passage (77) may be used as a passage for dissipating heat from the sheet coil (40). Among the passages for dissipating heat from the heat sink (13) and the passages for dissipating heat from the sheet coil (40), the passage resistance of the passage for dissipating heat from the sheet coil (40) using a forced convection method may be relatively smaller. Accordingly, the upper passage (77) with a larger flow resistance can receive a larger air volume from the fan (F) than the lower passage (67) with a smaller flow resistance. In order to supply different air volumes to the lower passage (67) and the upper passage (77) by a single fan (F), the expansion angle (A) of the fan (F) in the lower passage (67) and the upper passage (77) can be made different. Here, the expansion angle (A) can be the angle between the blades of the fan (F). The expansion angle (A) of the fan (F) can be designed to gradually increase in the radial direction of the fan (F) from the center of the fan (F).

[0059] In order to make the expansion angles (A) of the fan (F) in the lower passage (67) and the upper passage (77) different from each other, the lower passage (67) and the upper passage (77) may be provided to have different lengths in the radial direction of the fan (F) from the center (O) of the fan (F). The lower passage (67) may be provided so that the fan (F) has a first expansion angle. The upper passage (77) may be provided so that the fan (F) has a second expansion angle. The larger the expansion angle (A) of the fan (F), the greater the air volume the fan (F) can supply. In order to enable the upper passage (77) with a larger resistance to receive a larger amount of air from the fan (F) than the lower passage (67) with a smaller resistance, the second expansion angle, which is the expansion angle (A) of the fan (F) in the upper passage (77), may be larger than the first expansion angle, which is the expansion angle (A) of the fan (F) in the lower passage (67). To this end, the first upper passage (78) among the upper passages (77) may be provided to have a longer length in the radial direction of the fan (F) from the center (O) of the fan (F) than the first lower passage (68) among the lower passages (67). That is, the length (D1) from the center (O) of the fan (F) to the side wall of the upper installation part (71) forming the first upper passage (78) in the radial direction of the fan (F) may be set longer than the length (D2) from the center (O) of the fan (F) to the side wall of the lower installation part (61) forming the first lower passage (68) in the radial direction of the fan (F).

[0060] Fig. 13 is a cross-sectional view of a cooktop of a cooking appliance according to one embodiment. Fig. 14 is a diagram illustrating the flow of air, in which air is sucked into an intake port according to one embodiment, moves along a first flow path to dissipate heat to a heat sink. Fig. 15 is a diagram illustrating the flow of air, in which air is sucked into an intake port according to one embodiment, moves along a second flow path to dissipate heat to a sheet coil, and is discharged.

[0061] As illustrated in FIGS. 13 to 15, the interior of the scroll (50) can be divided into a lower passage (67) and an upper passage (77) by a divider (80). Some of the air sucked into the intake port (91) by the fan (F) may flow into the lower passage (67), and the remaining part may flow into the upper passage (77). The air drawn into the lower passage (67) may be discharged through the discharge port (65, see FIG. 8) and may flow into the guide passage (17) that is connected to the lower passage (67). The air drawn into the guide passage (17) may pass through the guide passage (17) and dissipate heat to the heat sink (13). The air that passes through the guide passage (17) and dissipates heat to the heat sink (13) may be discharged to the outside through the first discharge hole (32) formed in the lower surface (31) of the lower plate (30). The lower passage (67) of the scroll (50) for dissipating heat from the heat sink (13) and the guide passage (17) of the guide duct (15) can form a first passage (15, 67). (See FIG. 3 and FIG. 7)

[0062] A gap (G) may be formed between the upper plate (20) and the sheet coil (40). The gap (G) formed between the upper plate (20) and the sheet coil (40) may be used as a passage for dissipating heat from the sheet coil (40). Air sucked into the intake port (91) by the fan (F) and introduced into the upper passage (77) may be discharged through the discharge hole (37) into the gap (G) formed between the upper plate (20) and the sheet coil (40). The air discharged into the gap (G) formed between the upper plate (20) and the sheet coil (40) may pass through the gap (G) and dissipate heat from the sheet coil (40). The air that dissipates the heat of the sheet coil (40) can be discharged to the outside through the second discharge hole (35) formed in the side wall (34) of the lower plate (30) and the third discharge hole (33) formed in the lower surface (31) of the lower plate (30). The upper passage (77) of the scroll (50) for dissipating the heat of the sheet coil (40) and the gap (G) formed between the upper plate (20) and the sheet coil (40) can form a second passage (77, G). (See Fig. 3)

[0063] The air sucked into the intake port (91) by the fan (F) and introduced into the upper passage (77) is discharged through the discharge hole (37) and used to dissipate heat from the sheet coil (40). Some of the air introduced into the upper passage (77) is discharged into the space inside the lower plate (30) through the opening (75) formed in the upper connecting duct (73) to dissipate heat from the plurality of electrical components (11). The air that dissipates heat from the plurality of electrical components (11) can be discharged to the outside through the second discharge hole (35) formed in the side wall (34) of the lower plate (30). (See FIGS. 2 and 6)

[0064] The gap (G) formed between the top plate (20) and the sheet coil (40) may be approximately 2.5 mm to 4.0 mm. Specifically, the gap (G) formed between the top plate (20) and the sheet coil (40) may be approximately 3.3 mm. If the gap (G) formed between the top plate (20) and the sheet coil (40) is large, the flow path for dissipating heat from the sheet coil (40) becomes large, so that the amount of air supplied to the gap (G) formed between the top plate (20) and the sheet coil (40) increases, so that heat dissipation from the sheet coil (40) can be performed more efficiently. However, the magnetic force generated in the sheet coil (40) and transferred to the top plate (20) may be weakened. In addition, if the magnetic force generated in the sheet coil (40) and transferred to the top plate (20) is weakened, the amount of heat generated by the sheet coil (40) may increase in order to transfer a larger magnetic force to the top plate (20).

[0065] On the contrary, if the gap (G) formed between the top plate (20) and the sheet coil (40) is small, the flow path for dissipating heat from the sheet coil (40) becomes small, so the amount of air supplied to the gap (G) formed between the top plate (20) and the sheet coil (40) is reduced, making it difficult for the heat from the sheet coil (40) to be dissipated efficiently. In addition, if the gap (G) formed between the top plate (20) and the sheet coil (40) is small, the magnetic force generated in the sheet coil (40) and transmitted to the top plate (20) is too strong, so that the magnetic force is also transmitted to the cooking vessel (1) placed on the top plate (20), which may be dangerous for the user to use.

[0066] As a result, if the gap (G) formed between the upper plate (20) and the sheet coil (40) is small, the heat dissipation efficiency of the sheet coil (40) is reduced, and if the gap (G) formed between the upper plate (20) and the sheet coil (40) is large, the heat dissipation efficiency of the sheet coil (40) is not good. Therefore, it may be necessary to appropriately adjust the gap (G) formed between the upper plate (20) and the sheet coil (40).

[0067] According to one embodiment of the disclosed invention, a cooking appliance comprises: a top plate (20) on which a cooking vessel (1) is placed; a lower plate (30) provided with a discharge hole (37) at a lower portion of the top plate, a plurality of electrical components (11) and a heat sink (13) for dissipating heat generated from the plurality of electrical components; a sheet coil (40) disposed on the lower plate so as to form a gap (G) between the lower plate and the top plate; a scroll (50) including an intake port (91) and an exhaust port (65), and forming a path (67, 77) for dissipating air sucked into the intake port through the exhaust hole and the exhaust port to dissipate heat to the sheet coil and the heat sink; and a fan (F) provided inside the scroll to generate a suction force. The scroll includes a lower scroll (60) in which the fan is provided at the lower portion of the scroll to have a first expansion angle and forms a lower passage (67) that guides air sucked into the suction port to the heat sink, an upper scroll (70) in which the fan is provided at the upper portion of the lower scroll to have a second expansion angle greater than the first expansion angle and forms an upper passage (77) that guides air sucked into the suction port to the gap, and a divider (80) that divides the interior of the scroll into the lower passage and the upper passage. According to the present disclosure, the interior of the scroll, which forms a passage for air sucked by the fan to dissipate heat from the sheet coil and the heat sink, is divided into a lower passage and an upper passage by the divider, so that the sheet coil and the heat sink can be dissipated simultaneously using one fan. By making the expansion angles of the fan different from each other in the lower passage and the upper passage divided by the divider, air having different wind volumes can be supplied to the lower passage and the upper passage.

[0068] The lower scroll may include a lower installation portion (61) in which the fan is installed and forms a first lower passage (68) which is part of the lower passage, and the upper scroll may include an upper installation portion (71) in which the fan is installed and forms a first upper passage (78) which is part of the upper passage, and the first upper passage may be provided to have a longer length in the radial direction of the fan from the center (O) of the fan than the first lower passage. According to the present disclosure, by making the expansion angles of the fan different in the lower passage and the upper passage divided by the divider, air having different wind volumes can be supplied to the lower passage and the upper passage.

[0069] The above discharge port is connected to the lower passage, and air sucked into the suction port can be discharged to the heat sink through the discharge port.

[0070] The above scroll may further include a suction portion (90) that forms the suction port and is coupled to the lower scroll.

[0071] The lower scroll may include a lower installation part (61) to which the suction part is coupled and in which the fan is installed, and a lower connecting duct (63) connected to the lower installation part and forming the discharge port.

[0072] The lower passage may include a first lower passage (68) formed by the lower installation part and the divider, and a second lower passage (69) formed by the lower connection duct and the divider and connecting the first lower passage and the outlet.

[0073] A guide duct (15) connected to the lower connecting duct may be provided on the upper portion of the heat sink, and the guide duct may be connected to the lower flow path to form a guide flow path (17) that guides air discharged through the discharge port to dissipate heat from the heat sink. According to the present disclosure, the heat sink can be efficiently dissipated.

[0074] The above lower flow path and the above guide flow path can form a first flow path (67. 17) that dissipates heat from the heat sink. According to the present disclosure, the heat sink can efficiently dissipate heat.

[0075] The lower plate may include a first exhaust hole (32) formed on the lower surface (31) of the lower plate to allow air passing through the first flow path and dissipating heat from the heat sink to be discharged to the outside.

[0076] The upper scroll may include an upper installation portion (71) in which the fan is installed, an upper connection duct (73) connected to the upper installation portion, and an opening (75) provided in the upper connection duct so that air from the upper passage is discharged to dissipate heat from the plurality of electrical components. According to the present disclosure, heat from the plurality of electrical components can be efficiently dissipated.

[0077] The upper installation part can form a first upper passage (78) that is part of the upper passage together with the divider, and the upper connecting duct can form a second upper passage (79) that is connected to the first upper passage together with the divider.

[0078] The above lower plate may include a sheet coil mounting plate (36) on which the sheet coil is mounted and in which the discharge hole is formed. According to the present disclosure, the sheet coil can efficiently dissipate heat.

[0079] The above discharge hole is connected to the upper passage, and air sucked into the suction port can be discharged into the gap through the discharge hole. According to the present disclosure, the sheet coil can be efficiently heat-dissipated.

[0080] The upper passage and the gap can form a second passage (77, G) for dissipating heat from the sheet coil. According to the present disclosure, the sheet coil can be efficiently dissipated.

[0081] The lower plate includes a second exhaust hole (35) formed in a side wall (34) of the lower plate, and the second exhaust hole allows air that passes through the second flow path and dissipates heat from the sheet coil and air that is discharged through the opening and dissipates heat from the plurality of electrical components to be discharged to the outside.

[0082] According to one embodiment of the disclosed invention, a cooking appliance comprises: a top plate (20) on which a cooking vessel (1) is placed; a lower plate (30) provided with a discharge hole (37) at a lower portion of the top plate, a plurality of electrical components (11) and a heat sink (13) for dissipating heat generated from the plurality of electrical components; a sheet coil (40) disposed on the lower plate so as to form a gap (G) between the lower plate and the top plate; a scroll (50) including an intake port (91) and an exhaust port (65), and forming a path (67, 77) for dissipating air sucked into the intake port through the exhaust hole and the exhaust port to dissipate heat to the sheet coil and the heat sink; and a fan (F) provided inside the scroll to generate a suction force. The above-mentioned flow path includes a lower flow path (67) provided at the lower portion of the scroll and through which air sucked into the suction port is discharged through the discharge port to radiate heat to the heat sink, and an upper flow path (77) provided at the upper portion of the lower flow path and through which air sucked into the suction port is discharged through the discharge hole to radiate heat to the sheet coil. According to the present disclosure, the interior of the scroll, which forms a flow path for air sucked by a fan to radiate heat to the sheet coil and the heat sink, is divided into a lower flow path and an upper flow path, so that the sheet coil and the heat sink can be radiated simultaneously using one fan.

[0083] A guide duct (15) connected to the scroll may be provided on the upper portion of the heat sink, and the guide duct may be connected to the lower passage to form a guide passage (17) that guides air discharged through the discharge port to dissipate heat from the heat sink. According to the present disclosure, the heat sink can be efficiently dissipated.

[0084] The above lower flow path and the above guide flow path can form a first flow path (67, 17) that dissipates heat from the heat sink. According to the present disclosure, the heat sink can efficiently dissipate heat.

[0085] The upper passage and the gap can form a second passage (77, G) for dissipating heat from the sheet coil. According to the present disclosure, the sheet coil can be efficiently dissipated.

[0086] The above gap can be 2.5mm to 4.0mm.

[0087] The effects that can be obtained from the present disclosure are not limited to the effects mentioned above, and other effects that are not mentioned can be clearly understood by a person having ordinary skill in the art to which the present disclosure belongs from the description below.

[0088] In describing the cooking appliance with reference to the attached drawings above, specific shapes and directions have been mainly described, but it should be understood that various modifications and changes can be made by a person skilled in the art, and such modifications and changes should be interpreted as being included in the scope of the disclosed invention.

Claims

1. The cooking surface on which the cooking utensil is placed; A lower plate provided with a discharge hole at the lower portion of the upper plate, and provided with a plurality of electrical components and a heat sink for dissipating heat generated from the plurality of electrical components; A sheet coil arranged on the lower plate so that a gap is formed between the upper plate and the lower plate; A scroll including an inlet and an outlet, and discharging air sucked into the inlet through the discharge hole and the outlet to form a path for dissipating heat from the sheet coil and the heat sink; and A fan is provided inside the scroll to generate suction force; The above scroll, A lower scroll having a fan provided at the lower portion of the scroll to have a first expansion angle and forming a lower passage for guiding air sucked into the suction port to the heat sink; An upper scroll provided with a fan at the upper portion of the lower scroll having a second expansion angle greater than the first expansion angle and forming an upper passage for guiding air sucked into the suction port into the gap; and A divider dividing the inside of the scroll into the lower passage and the upper passage; A cooking appliance comprising:

2. In paragraph 1, The above lower scroll includes a lower installation portion in which the fan is installed and forms a first lower passage which is part of the lower passage, The upper scroll includes an upper installation portion in which the fan is installed and forms a first upper passage which is part of the upper passage, A cooking appliance in which the first upper passage is provided to have a longer length in the radial direction of the pan from the center of the pan than the first lower passage.

3. In paragraph 1, A cooking appliance in which the above discharge port is connected to the lower passage, and air sucked into the above suction port is discharged to the heat sink through the above discharge port.

4. In paragraph 3, A cooking appliance wherein the scroll forms the suction port and further includes a suction portion coupled to the lower scroll.

5. In paragraph 4, The above lower scroll is, A lower installation part in which the above suction part is combined and the fan is installed; and A cooking appliance comprising a lower connecting duct connected to the lower installation part and forming the outlet.

6. In paragraph 5, The above lower tier is, A first lower passage formed by the lower installation portion and the divider; and A cooking appliance including a second lower passage formed by the lower connecting duct and the divider and connecting the first lower passage and the outlet.

7. In paragraph 6, A guide duct connected to the lower connecting duct is provided on the upper part of the above heat sink. A cooking appliance in which the above guide duct is connected to the lower passage and forms a guide passage that guides the air discharged through the discharge port to dissipate heat to the heat sink.

8. In paragraph 7, A cooking appliance in which the lower passage and the guide passage form a first passage that dissipates heat from the heat sink.

9. In paragraph 8, A cooking appliance in which the lower plate includes a first exhaust hole formed on the lower surface of the lower plate and passing through the first passage to allow air that has dissipated heat from the heat sink to be discharged to the outside.

10. In paragraph 1, The upper scroll above is, The upper installation part where the above fan is installed; An upper connecting duct connected to the upper installation part; and A cooking appliance including an opening provided in the upper connecting duct and through which air of the upper passage is discharged to dissipate heat from the plurality of electrical components.

11. In Article 10, The upper installation part forms a first upper passage, which is a part of the upper passage, together with the divider, A cooking appliance in which the upper connecting duct forms a second upper passageway communicating with the first upper passageway together with the divider.

12. In paragraph 11, A cooking appliance wherein the lower plate includes a sheet coil mounting plate on which the sheet coil is mounted and on which the discharge hole is formed.

13. In paragraph 12, A cooking appliance in which the above discharge hole is connected to the upper passage, and air sucked into the suction port is discharged through the discharge hole into the gap.

14. In paragraph 13, A cooking appliance wherein the upper passage and the gap form a second passage for dissipating heat from the sheet coil.

15. In paragraph 14, The lower plate includes a second discharge hole formed in a side wall of the lower plate, The second exhaust hole is a cooking appliance in which air that passes through the second passage and dissipates heat from the sheet coil and air that is discharged through the opening and dissipates heat from the plurality of electrical components are discharged to the outside.

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