KR102047289B1 - High efficient induction range - Google Patents

Abstract

A high efficiency induction range, comprising: a housing having at least one inlet and at least one exhaust port, at least one induction coil for generating an alternating magnetic field, a heating plate for converting an alternating magnetic field to heat, and heat from the heating plate to the at least one induction coil Insulation material to prevent it from being made up, a partition which is installed upright inside the housing to separate the space below the at least one induction coil and the space on the exhaust port side, and the air in the space below the at least one induction coil through the gap between the heating plate and the partition wall And a discharge fan for discharging to the outside, wherein the air introduced into the space below the at least one induction coil passes through the gap between the partition wall and the heating plate, and the space between the partition wall and the heating plate. Due to the size difference, the flow rate of air passing through at least one induction coil is increased. It becomes.

Description

High efficient induction range

It relates to an induction range for heating a heating plate made of an electrically inductive material using a high frequency induction magnetic field generated by an induction coil.

Induction range means an electric range that generates heat by the induction heating method. Induction heating method generates a magnetic field by supplying a high frequency current to the induction coil. The magnetic field generated by the induction coil induces Eddy Current in the heating plate made of the electrically inductive material, and the eddy current is converted into heat by the resistance of the heating plate. Induction ranges have high energy efficiency compared to conventional gas ranges and electric ranges, have little fire risk, and do not generate harmful gases such as carbon monoxide and carbon dioxide. Therefore, induction ranges are often used not only in large restaurants and hotels but also in homes.

Generally, the induction range is composed of a generator for supplying a high frequency current to an induction coil, an induction coil for generating a magnetic field, and a heating plate for generating heat. A heating plate is disposed on the induction coil and a generator is disposed below the induction coil. Have. When the induction range is activated, the heating plate is heated slowly. The heat generated by the heating plate gradually raises the temperature inside the induction range. When the internal temperature of the induction range is increased, the internal equipment of the induction range may deteriorate, thereby degrading the performance of the induction range, and there is a problem that a fire may occur.

Increasing the internal temperature of the induction range also affects the performance of the induction coil. In general, induction coils are made of copper wire having high conductivity, and conductors such as copper have higher resistance as temperature increases. That is, when the temperature of the induction coil increases, the resistance of the induction coil increases, and as the resistance of the induction coil increases, the current flowing in the induction coil decreases. Since the strength of the current flowing in the induction coil is weakened, the induction magnetic field generated by the induction coil is also weakened. That is, as the internal temperature of the induction range increases, the magnetic field generated by the induction coil becomes weaker, and thus the energy efficiency of the induction range decreases.

Republic of Korea Patent No. 10-1288551 "Induction stove using high frequency induction heating technology" adds a cooling unit having a high cooling function on one side to prevent overheating of the inside of the induction stove. The conventional cooling method of the induction range is simply by adding a cooling fan to the induction range, it is not possible to efficiently cool the inside of the induction range quickly, the efficiency of the induction range could not be improved.

By efficiently cooling the induction induction coil of the induction range and blocking the heat transfer between the heating plate and the induction coil, it is possible to provide a high efficiency induction range that does not degrade the efficiency of the induction range even when used for a long time. In addition, the present invention is not limited to the above technical problems, and other technical problems may be derived from the following description.

The induction range according to the present invention includes a housing in which at least one inlet and at least one exhaust port are formed on different sidewalls in the form of a box having an open top surface; At least one induction coil installed in an inner upper side of the housing in the form of a disc to generate an alternating magnetic field; A heating plate installed on the at least one induction coil in the form of a flat plate covering an open upper surface of the housing and converting an alternating magnetic field generated by the at least one induction coil into heat; A heat insulating material inserted between the at least one induction coil and the heating plate in a flat plate shape to block heat from the heating plate from being transferred to the at least one induction coil; A partition wall that is upright installed outside the space below the at least one induction coil so as to be close to the sidewall on which the exhaust port is formed, so as to separate the space below the at least one induction coil from the space at the exhaust port side; And at least one discharge fan installed in a space on the side of the exhaust port separated by the partition wall and sucking air introduced into the space below the at least one induction coil through a gap between the heating plate and the partition wall and discharged to the outside. At least one of the air flows through the gap between the partition wall and the heating plate while the air flowing into the space under the at least one induction coil is increased due to the difference in size between the space under the at least one induction coil and the gap. The flow rate of air passing through the induction coil is increased.

The induction range according to the present invention further includes at least one suction fan disposed under the at least one induction coil to suck outside air through the inlet of the housing, and the partition wall has an installation height of the at least one suction fan. It is installed upright at a higher height, and air is introduced into the space below the at least one induction coil by the interlocking of the at least one suction fan and the at least one discharge fan, and is discharged through a gap between the partition wall and the heating plate. In the process of passing through the at least one induction coil as the flow rate increases than the blowing speed of the at least one suction fan in proportion to the gap between the at least one induction coil and the suction fan and the gap between the partition and the heating plate. The air flow rate is increased.

The heating plate and the at least one induction coil are disposed to be spaced apart from each other, and part of the outside air sucked by the suction fan is introduced into a gap between the heating plate and the at least one induction coil and The air is discharged through the gap between the partition wall and the heating plate by the discharge fan together with the air introduced into the lower space.

Induction range according to the present invention, the generator is installed on the lower inside of the housing for supplying an alternating current to the at least one induction coil; A heat dissipation fan attached to the generator to cool the generator; And an exhaust duct hermetically coupled to an outer surface of the generator so that one end of the heat dissipation fan is built in, and the other end of which is hermetically coupled to an opening of the partition wall so as to communicate with the at least one exhaust port.

The induction range according to the present invention further includes a pedestal formed in the shape of a polygonal frame having a plurality of straight legs and installed on an upper surface of the generator, wherein the at least one suction fan is mounted on the polygonal frame of the pedestal so that the housing Intake air, between the plurality of straight legs of the pedestal, and through the polygonal opening surface of the pedestal, wherein air is supplied from the outside by the at least one suction fan and the at least one discharge fan. The gap between the at least one induction coil and the top surface of the generator and the gap between the partition and the heating plate in the process of flowing into the space below the at least one induction coil and being discharged through the gap between the partition and the heating plate. In proportion to the flow rate of the blowing speed of the at least one suction fan La wherein at least one flow rate of air passing through the induction coil of the stitch is increased.

The induction range according to the present invention further includes an exhaust cover in the form of a curved tube which is hermetically coupled to the opening of the partition wall so that an inlet communicates with the exhaust duct and the outlet is bent toward the bottom surface of the housing.

In operation of the induction range, the heating plate is heated by the induction coil, and the heat generated by the heating plate is transferred into the induction range, thereby raising the internal temperature of the induction range. Hot air flowing around the induction coil is discharged by the exhaust fan installed inside the housing of the induction range, and the space below the induction coil and the size of the gap between the partition wall and the heating plate due to the partition wall installed upright inside the housing during this discharge process. Due to the difference in the flow rate of the air discharged to the outside of the housing is faster, the interior of the induction range can be cooled quickly. That is, the induction coil of the induction range can be efficiently cooled by only changing the internal structure of the housing without adding a separate cooling device to the induction range.

In particular, by inserting a heat insulating material between the heating plate and the induction coil can block the lower transfer of the heating plate heat to concentrate the heating plate heat to the heating object, it is possible to block the transmission of cold air under the heating plate to the heating plate side. Above all, this insulation insert can block the rise of the temperature of the induction coil due to the heat of the heating plate to suppress the increase of the resistance of the induction coil, and consequently the magnetic field weakening can be prevented according to the increase of the resistance of the induction coil. The unnecessary electric energy consumption due to disappears. The thermal efficiency of the induction range can be greatly improved through synergy of the insert structure of the insulation and the efficient air cooling structure of the housing as described above.

In addition, by placing the heating plate and the induction coil spaced apart from each other to form a gap between the heating plate and the induction coil, by discharging the hot air between the heating plate and the induction coil to the outside of the induction range together with the air introduced into the space below the induction coil The induction coil can be cooled efficiently. In addition, a heat radiating fan may be attached to the generator, which is an increase factor of the internal temperature of the induction range other than the heating plate, and the exhaust duct may be hermetically coupled to the outer surface of the generator to directly discharge heat generated by the generator to the outside of the induction range. Accordingly, it is possible to prevent the internal temperature of the induction range from being raised by blocking the heat of the generator from being transferred into the housing.

As described above, the induction range according to the present invention, in addition to cooling the induction coil through the efficient air-cooling structure of the housing, the insertion of the insulation between the heating plate and the induction coil, etc., eliminates the cause of the increase in the internal temperature of the induction range and induction coil furnace. By blocking the heat transfer, the induction range can be maintained at the optimum induction coil temperature condition that can always be operated with high efficiency. Accordingly, it is possible to provide a high efficiency induction range in which the efficiency of the induction range does not decrease even when used for a long time.

1 is a front perspective view of an induction range according to an embodiment of the present invention.
2 is a side cross-sectional view of the induction range shown in FIG. 1.
3 is a front sectional view of the induction range shown in FIG. 1.
4A is a rear perspective view of the induction range shown in FIG. 1.
4B is a view showing the internal structure of the rear side wall of the induction range shown in FIG. 4A.
Figure 5 is an exploded view of the exhaust means of the induction range shown in Figure 4b.
6 is a plan view of the induction range shown in FIG.
7 is a top exploded view of the induction range shown in FIG. 1.
8 is an exploded view of the lower portion of the housing of the induction range shown in FIG. 1.
9 is a view showing the air flow inside the housing of the induction range shown in FIG.

Hereinafter, with reference to the drawings will be described embodiments of the present invention; Kitchens in restaurants, such as large restaurants and hotels, that are visited by many customers at the same time, must be able to cook a large amount of food at once. Accordingly, a cooking apparatus capable of cooking a large amount of food at once with a strong fire power is essential. Embodiments of the present invention relate to a high efficiency induction range for rapidly heating the iron plate with a magnetic field generated by an induction coil in order to cook a large amount of food at the same time, in particular the induction range even when used for a long time by efficiently cooling the induction coil It relates to a high efficiency induction range does not decrease the efficiency of. In the following, such an apparatus may be referred to simply as an "induction range".

1 is a front perspective view of an induction range according to an embodiment of the present invention, FIG. 2 is a side cross-sectional view of the induction range shown in FIG. 1, FIG. 3 is a front sectional view of the induction range shown in FIG. 1, and FIG. 4A. 1 is a rear perspective view of the induction range illustrated in FIG. 1, and FIG. 4B is a diagram illustrating an internal structure of a rear sidewall of the induction range illustrated in FIG. 4A. 1-4, the induction range of the present embodiment includes a housing 1, a plurality of induction coils 10, a heating plate 11, a heat insulating material 12, a plurality of suction fans 14, and a plurality of discharge fans. 15), a heat radiating fan 18, a pedestal 16, a generator 17, a plurality of exhaust ducts 19, and a plurality of adjusting feet 20. In the following description of the main components as described above or in the course of describing another embodiment of the present invention, other components other than the above-described main components may appear.

The housing 1 is formed in the shape of a rectangular box having an open upper surface, and the inlet 5 for intake of external air of the induction range and the exhaust port 4 for discharging the internal air of the induction range are formed on different sidewalls of the housing 1. Is formed. As shown in Figs. 1 and 4, an inlet 5 is formed in each of the front side wall, the left side wall, the right side wall, and the bottom side wall of the housing 1, and an exhaust port 4 is formed in the rear side wall. The heating plate 11 is covered on the open upper surface of the housing 1. Inside the housing 1, a plurality of induction coils 10 for generating a magnetic field, a generator 17 for supplying a high frequency alternating current to the plurality of induction coils 10, and a partition wall for dividing the internal space of the housing 1 ( 13), a plurality of suction fans 14 for suctioning external air into the housing 1, a plurality of discharge fans 15 and generators 17 for discharging the internal air of the housing 1 to the outside; A heat radiating fan 18 or the like for cooling is provided. The detailed structure of the housing 1 will be described below.

Each of the plurality of induction coils 10 is formed in a disc shape to generate a magnetic field from the high frequency AC current supplied from the generator 17. The plurality of induction coils 10 are disposed on the open upper surface of the housing 1. Each induction coil 10 is made of a copper wire having high conductivity, and is attached to a fixed plate (not shown) having a disc shape and made of a thermosetting insulator such as silicon, bakelite, or the like. When a high frequency AC current is applied to the induction coil 10, an AC magnetic field is generated by the AC current flowing through the copper wire of the induction coil 10. The magnetic flux forming the magnetic field has a direction perpendicular to the current flowing through it. Accordingly, the top or bottom of the disc guide coil 10 becomes a region of the magnetic field formed by the guide coil 10. The plurality of induction coils 10 may be connected in series or in parallel with each other, the number and arrangement of the induction coil 10 may vary depending on the size and shape of the heating plate (11). In the present embodiment, a plurality of induction coils 10 are used to heat the entire heating plate 11 in a square flat plate shape, but one induction coil may be used according to the shape of the heating plate 11.

The heating plate 11 is formed in the shape of a square flat plate covering the open upper surface of the housing 1 and installed on the plurality of induction coils 10. The heating plate 11 converts the alternating magnetic field generated by the plurality of induction coils 10 into heat by the resistance of the heating plate 11 itself. The heating plate 11 is heated through this induction heating process, and the user can cook food on the heated heating plate 11. The heating plate 11 is located in the region of the magnetic field generated by the plurality of induction coils 10 by being installed on the plurality of induction coils 10. The magnetic flux in the heating plate 11 is changed by the magnetic field generated by the plurality of induction coils 10, and thus electromotive force is generated on the heating plate 11. Due to such electromotive force, an eddy current is generated and flows in the heating plate 11. The eddy current flowing in the heating plate 11 is converted into heat by the resistance of the heating plate 11 itself, and the heating plate 11 is heated by this heat. Accordingly, the heating plate 11 should be made of a conductor so that electromotive force and eddy current can be generated, and in general, the heating plate 11 may be made of a metal material containing iron. In the present embodiment, the heating plate 11 in the form of a square flat plate is used, but the shape of the heating plate 11 may be implemented in various forms such as a disc shape and a semi-circle shape according to the purpose of use of the induction range.

The heat insulating material 12 is formed in a square flat plate shape and is inserted between the plurality of induction coils 10 and the heating plate 11. The heat insulator 12 prevents heat generated by the heating plate 11 from being transferred to the plurality of induction coils 10. As described above, since the heating plate 11 must be present in the region of the magnetic field generated by the plurality of induction coils 10, the heating plate 11 and the plurality of induction coils 10 should be disposed closely. Therefore, heat of the heating plate 11 may be directly transferred to the plurality of induction coils 10, and the plurality of induction coils 10 may be overheated. In addition, since the internal temperature of the induction range is increased, equipment such as the generator 17, the suction fan 14, the discharge fan 15, and the like existing in the housing 1 of the induction range may also be overheated. Overheating of the induction coil 10 and various equipments may degrade the performance of the induction range, and the induction coil 10 and the equipment itself may be damaged.

In this embodiment, in order to prevent such a problem, by inserting the heat insulating material 12 between the heating plate 11 and the plurality of induction coil 10, the plurality of induction coil 10 and the housing 1 of the induction range Prevent overheating. As the heat insulating material 12 according to the present embodiment, it is preferable to use a ceramic heat insulating material capable of withstanding a temperature of 1300 ° C. Since the conventional fiber type heat insulating material has air permeability, there is a problem that the cool air introduced from the outside of the housing 1 is transferred to the heating plate 11 through the heat insulating material. Since the ceramic insulator does not have breathability unlike the fiber type insulator, cold air introduced from the outside of the housing 1 may not pass through the ceramic insulator, thereby improving thermal efficiency of the induction range.

In particular, the heat insulator 12 prevents the heat of the heating plate 11 from being transferred in the direction toward the induction coil 10, that is, the downward direction, such as food or the like on which the heat of the heating plate 11 is placed on the heating plate 11. It can be concentrated on a heating object. In addition, the heat insulating material 12 may improve the thermal efficiency of the induction range according to the present embodiment by preventing the cool air of the wind discharged from the suction fan 14 to reach the heating plate 11. First of all, the heat insulating material 12 blocks the temperature rise of the induction coil 10 due to the heat transferred from the heating plate 11, thereby reducing the thermal efficiency of the induction range due to the weakening of the magnetic field caused by the temperature rise of the induction coil 10, that is, electric Energy waste can be minimized. In this way, the heat insulator 12 concentrates the heat of the heating plate 11 on the heating object, blocks the transfer of cold air to the heating plate 11 side, and blocks the rise of the temperature of the induction coil 10, thereby greatly improving the thermal efficiency of the induction range. You can. In the present embodiment, the heat insulating material 12 is manufactured in the form of a square flat plate, but may be manufactured in various forms according to the shape of the heat insulating material 12 according to the shape of the heating plate 11.

The partition wall 13 is installed upright so as to be close to a side wall on which the exhaust port 4 is formed outside the space below the plurality of induction coils 10 in the housing 1, and thus the spaces below the plurality of induction coils 10 and the exhaust port 4. Separate the space on the side. The partition 13 is formed with an opening 131 connected to the exhaust duct 19 for discharging air around the generator 17 to the outside of the housing 1. The exhaust duct 19 will be described in detail below. As shown in Figures 2 and 3, the partition wall 13 is formed in the form of a square flat plate having a height higher than the installation height of the suction fan 14, the housing 1 to a height higher than the installation height of the suction fan 14 It is installed upright to approach the rear of the. As described above, as the height of the partition wall 13 is higher than the height of the suction fan 14, the partition wall 13 through which air in the space below the induction coil 10 escapes as compared to the space below the induction coil 10. The gap between the heating plates 11 becomes very narrow.

Air circulating inside the housing 1, that is, air circulating below the induction coil 10, flows to the exhaust port 4 through a gap between the partition 13 and the heating plate 11. The gap between the partition 13 and the heating plate 11 is very narrow compared to the size of the space below the induction coil 10. When the air passes through a space, if the space is changed in size, a venturi effect occurs in which the flow velocity varies depending on the size difference. The Venturi effect refers to a phenomenon in which a fluid flowing in a passage passes through the narrowing portion of the passage, where the pressure of the fluid decreases relatively and the flow velocity becomes faster.

According to the Venturi effect, when the air flowing in a large space proceeds to a narrow space, the pressure is lowered and the flow rate is increased. That is, the air flowing in the space below the induction coil 10 is spaced between the partition 13 and the heating plate 11 due to the difference in size between the space below the induction coil 10 and the partition 13 and the heating plate 11. The flow rate of air passing through the gap increases. As the flow rate of the air passing through the gap between the partition 13 and the heating plate 11 increases, the flow rate of the air passing through the induction coil 10 also increases, so that the hot air around the induction coil 10 rapidly increases. (1) It can be discharged to the outside. As the size difference between the space below the induction coil 10 and the partition 13 and the heating plate 11 increases, the flow rate of air passing through the gap between the partition wall 13 and the heating plate 11 increases. That is, the size difference between the space below the induction coil 10 and the gap between the partition wall 13 and the heating plate 11 and the flow rate of air passing through the gap between the partition wall 13 and the heating plate 11 are proportional to each other.

The plurality of suction fans 14 are disposed below the plurality of induction coils 10 to suck outside air through the inlet port 5 of the housing 1. One suction fan 14 may be installed in the housing 1 according to the size of the induction range according to the present embodiment. 2 and 3, a plurality of suction fans 14 are mounted on the pedestal 16 and disposed above the generator 17. The suction fan 14 sucks cold air in the lower space of the housing 1 and flows to the space below the induction coil 10. By the operation of the suction fan 14, as the air pressure in the lower space of the housing 1 is lowered, the housing 1 from the outside of the housing 1 through the inlet port 5 formed on a plurality of side surfaces of the housing 1. Air enters the lower space of the).

In the process in which air flows from the outside of the housing 1 into the space below the induction coil 10 and is discharged through the gap between the partition 13 and the heating plate 11, the induction coil ( The flow rate is increased more than the blowing speed of the suction fan 14 in proportion to the gap between the 10 and the suction fan 14 and the gap between the partition 13 and the heating plate 11. Accordingly, the flow rate of air passing through the induction coil 10 is increased. That is, the induction range according to the present embodiment is installed by changing the internal structure of the housing by installing a partition wall inside the housing of the induction range without adding a separate cooling device or consuming much energy in order to lower the internal temperature of the induction range. It enables efficient cooling of the interior.

The plurality of exhaust fans 15 are installed in a space on the side of the exhaust port 4 separated by the partition wall 13 to supply air introduced into the space below the plurality of induction coils 10 to the heating plate 11 and the partition wall 13. Suction through the gap between and discharged to the outside of the housing (1). According to the size of the induction range according to the present embodiment, one discharge fan 15 may be installed inside the housing 1. As shown in FIGS. 2 and 3, the plurality of discharge fans 15 are disposed in the gap between the rear surface of the housing 1 and the partition 13. The discharge fan 15 discharges hot air flowing through the space below the induction coil 10 and the gap between the induction coil 10 and the heating plate 11 to the outside of the housing 1 through the exhaust port 4.

Pedestal 16 is formed in a polygonal shape having a plurality of straight legs. Pedestal 16 is installed on the upper surface of the generator (17). The suction fan 14 is mounted on the polygon frame of the pedestal 16. The pedestal 16 has an opening surface between the two straight legs and the polygonal frame so as not to disturb the air flow inside the housing 1. The pedestal 16 according to the present embodiment is implemented in a form in which four straight legs are attached to four corners of the square frame, but in various forms such as three matching legs attached to three corners of the triangular frame. Can be.

The generator 17 supplies a high frequency current to the plurality of induction coils 10. The generator 17 is installed below the inside of the housing 1. The generator 17 generates, for example, a high frequency alternating magnetic field on the induction coil 10 by applying a high frequency current of 20-100 kHz to each of the plurality of induction coils 10. The generator 17 adjusts the frequency of the high frequency current supplied to the plurality of induction coils 10 according to the user's input to the temperature controller attached to the front surface of the housing 1 of the induction range to adjust the temperature of the heating plate 11. Adjust In addition, the generator 17 supplies power to the discharge fan 15, the suction fan 14, and the heat dissipation fan 18.

The heat radiating fan 18 is attached to the generator 17 to cool the generator 17. The heat radiating fan 18 sucks heat generated by the generator 17 and discharges it to the outside to prevent overheating of the generator 17. One end side of the exhaust duct 19 is hermetically coupled to the outer surface of the generator 17 so that the heat dissipation fan 18 is built in, and the other end side of the exhaust duct 19 communicates with the exhaust port 4. ) Is hermetically coupled. Since the exhaust duct 19 is hermetically coupled to the outer surface of the generator 17 and the opening 131 of the partition wall 13, the heat of the generator 13 does not flow out to the other place, but the exhaust port 4 through the exhaust duct 19. Is delivered. That is, as the generator 17 is separated from the internal space of the housing 1 by the exhaust duct 19, hot air generated by the generator 17 does not flow into the housing 1. In addition, hot air generated by the generator 17 is discharged directly to the exhaust port 4 by the heat radiating fan 18. Accordingly, it is possible to prevent the induction coil 10 from overheating due to the heat generated during the operation of the generator 17.

As the generator 17 of the present embodiment is formed in the shape of a rectangular box, the exhaust duct 19 is also formed in the shape of a rectangular pipe correspondingly. Those skilled in the art to which this embodiment belongs may understand that the shape of the exhaust duct 19 may be variously modified according to the shape of the generator 17. Four adjustment feet 20 are attached to four corners of the lower surface of the housing 1 to adjust the height of each corner of the housing 1. By adjusting the height of each adjusting foot 20, the induction range can be installed horizontally on the floor.

5 is an exploded view of the exhaust means of the induction range shown in FIG. 2, 4, and 5, the exhaust means of this embodiment is composed of the partition 13, the exhaust fan 15, and the exhaust duct 19, it is installed on the rear of the housing (1). An exhaust port 4 is formed on the rear surface of the housing 1. As shown in FIG. 5, the partition wall 13 is installed upright between the left and right side surfaces of the housing 1 such that air in the internal space of the housing 1 is not directly exhausted to the exhaust port 4, but is induced with the partition wall 13. The exhaust port 4 is discharged through a gap between the coils 10. As such, the partition wall 13 separates the internal space of the housing 1 from the space of the exhaust port 4, and is installed higher than the suction fan 14 so as to separate the gap between the partition wall 13 and the heating plate 11 from the induction coil ( Make it much narrower than the space below.

As shown in FIG. 5, the discharge fan mounting plate 151 is installed between the upper end of the partition 13 and the inner side of the rear side wall of the housing 1. A plurality of openings are formed in the discharge fan mounting plate 151, and each discharge fan 15 is inserted into each opening of the discharge fan mounting plate 151. The inlet of each discharge fan 15 is exposed to the inner space of the housing 1 so that the discharge fan 15 sucks air flowing through the space below the induction coil 10, and the suctioned air is separated from the partition 13. Discharge into the space between the rear of the housing (1). Air introduced into the space between the partition 13 and the rear surface of the housing 1 is discharged to the outside of the housing 1 through the exhaust port 4 of the rear side wall of the housing 1.

An exhaust duct 19 for discharging the heating air of the generator 17 is provided at the lower end of the partition wall 13 so as to be connected to the opening 131 of the partition wall 13. The exhaust cover 191 is formed in a curved tube shape which is hermetically coupled to the opening of the partition 13 so that the inlet communicates with the exhaust duct 19 and the outlet is bent toward the bottom surface of the housing 1. As such, the inlet of the opening 131 of the partition 13 is hermetically coupled to the exhaust duct 19, and the outlet of the opening 131 is hermetically coupled to the inlet of the exhaust cover 191. The heat radiating fan 18 attached to the generator 17 sucks the heating air of the generator 17 and discharges it into the space between the partition 13 and the rear surface of the housing 1 through the exhaust duct 19. Since the outlet of the opening 131 of the partition 13 is hermetically coupled to the exhaust cover 191 in a curved pipe shape bent toward the bottom surface of the housing 1, the heating air of the generator 17 is discharged from the housing 1. It is discharged to the outside of the housing 1 without mixing with the internal air. By the exhaust means of the induction range it is possible to block the heat of the generator 17 from being transferred to the interior of the housing 1, in particular the induction coil 10 and the thermal efficiency of the induction range can be improved.

6 is a plan view of the induction range shown in FIG. 1, and FIG. 7 is a top exploded view of the induction range shown in FIG. 1. 2 and 3, a plurality of induction coils 10, a heat insulating material 12, and a heating plate 11 are sequentially stacked on the upper surface of the housing 1. 6-7, a heat insulating material 12 having the same size and shape as the heating plate 11 is installed under the heating plate 11 in the form of a large square plate. Under the heat insulator 12, a plurality of small induction coils 10 are uniformly arranged with respect to the entire heating plate 11.

The conventional induction range was manufactured by installing one induction coil on one heating plate 11 to heat one heating plate 11. The induction coil used in the conventional induction range is manufactured in the form of a large disc. On the contrary, since the heating plate 11 of the induction range is manufactured in a quadrangular shape, the edge of the heating plate 11 does not have an influence of the magnetic field formed by the induction coil in the form of a disc or the strength of the magnetic field is weaker than in the center portion. Accordingly, the corner portion of the heating plate 11 is heated slowly compared to the center portion, there is a problem that the temperature is low. In a large restaurant's kitchen where many foods have to be cooked at once, an induction range with a large heating plate is required. In addition, for fast food cooking and the same food taste, all parts of the large heating plate must be heated to the same temperature quickly. In a conventional manufacturing method in which one induction coil is disposed on one heating plate, the larger the size of the heating plate is, the slower the heating rate of the heating plate is, and it is difficult to control all parts of the heating plate at the same temperature, and in particular, to heat the corners of the heating plate. There is a hard problem.

In order to solve this problem, the present embodiment uniformly arranges a plurality of small disc induction coils 10 under the rectangular heating plate 11. Referring to FIG. 5, since the small disc induction coil 10 is uniformly arranged under the heating plate 11, the edge portion of the heating plate 11 also belongs to the magnetic field region generated by the induction coil. In addition, a plurality of magnetic fields are generated by the plurality of induction coils 10 installed under the heating plate 11, and each induction coil induces an eddy current in the region of the heating plate immediately above the induction coil. In the heating plate 11, a plurality of eddy currents corresponding to each of the plurality of induction coils 10 flow in respective regions. The heating plate 11 according to the present embodiment may be heated rapidly and the corner portion and the center portion of the heating plate 11 may be heated to an equal temperature. The plurality of coils 10 uniformly arranged under the heating plate 11 may be connected in series or in parallel.

In addition, the induction range according to the present exemplary embodiment may arrange the heating plate 11 and the induction coil 10 spaced apart from each other to form a gap in which air may flow between the heating plate 11 and the induction coil 10. Some of the air introduced into the space below the induction coil 10 by the suction fan 14 may flow through the gap between the heating plate 11 and the induction coil 10. Some of the outside air sucked by the suction fan 14 flows into the gap between the heating plate 11 and the induction coil 10 and enters the discharge fan 15 together with the air introduced into the space below the induction coil 10. It discharges through the clearance gap between the partition 13 and the heating plate 11 by this. Accordingly, since hot air existing between the induction coil 10 and the heating plate 11 can be easily discharged to the outside, the increase in the internal temperature of the housing 1 is suppressed and the overheating of the induction coil 10 can be efficiently prevented. You can prevent it.

8 is an exploded view of the lower part of the housing of the induction range shown in FIG. 1; As described above, the housing 1 is formed in a box shape with an open top surface. One inlet port 5 is formed at the lower end of the left side wall and the right side wall of the housing 1, and two inlet ports 5 are formed at the front side wall and the bottom side wall of the housing 1. One exhaust port 4 is formed on the rear side wall of the housing 1. The inlet 5 formed at each side of the dust filter 51 for filtering the dust contained in the air flowing into the housing 1 and the foreign matter such as oil, water and the like to block the inflow into the housing 1 The slit board 52 is provided. The air flowing into the housing 1 may be filtered through the slit plate 52 and the dust filter 51 installed on each sidewall, thereby preventing foreign matters such as dust from entering the inside of the housing 1. If foreign matters flow into the housing 1, the induction coil 10, the suction fan 14, the discharge fan 15, the heat dissipation fan 18 and the generator 17 may be damaged, and the housing ( 1) There is a problem that a fire may occur due to the high temperature inside. In this embodiment, this problem is solved by providing the dust filter 51 and the slit plate 52 in all the intake ports 5.

2 and 3, the heating plate 11 and the induction coil 10 are disposed above the housing 1, and the generator 17 is installed below the housing 1. The heating plate 11 and the generator 17 are devices that generate heat during the induction range operation. In the induction range according to the present embodiment, the heating plate 11 and the generator 17 are separated from each other to the upper side and the inner lower side of the housing 1, respectively. In addition, the induction range according to the present embodiment connects the frame of the generator 17 with the exhaust duct 19 to separate the internal space of the housing 1 from the generator 17 and removes heat generated by the generator 17. The exhaust is directly discharged to the outside of the housing 1 through the duct 19. That is, by separately installing the heating plate 11 and the generator 17, which are factors of temperature rise inside the housing 1, above and below the housing 1, the temperature rise factor inside the housing 1 is removed in advance. The internal temperature of 1) can be prevented from rising.

9 is a view showing the air flow inside the housing of the induction range shown in FIG. Referring to FIG. 9, the suction fan 14 is turned on to suck air in the internal space of the housing 1 during the operation of the induction range according to the present embodiment. As the air pressure in the internal space of the housing 1 is lowered by the air suction operation of the suction fan 14, the housing 1 is provided through the inlet port 5 formed on the front, left, right and bottom surfaces of the housing 1. Air flows into the inner space from the outside. Air introduced into the internal space of the housing 1 is collected by the suction fan 14 into the space below the induction coil 10. Air introduced into the space below the induction coil 10 circulates around the induction coil 10 and the gap formed between the induction coil 10 and the heat insulating material.

The discharge fan 15 sucks air in the internal space of the housing 1 and discharges it to the space on the side of the exhaust port 4. By the air suction operation of the discharge fan 15, hot air flowing in a space below the induction coil 10 and a gap between the induction coil 10 and the heating plate 11 is discharged to the outside of the housing 1. That is, air is introduced into the space below the induction coil 10 from the outside of the housing 1 by the suction fan 14 and the discharge fan 15 interlocked, and is discharged to the outside of the housing 1 through the exhaust port 4. . This embodiment guides the cool air from the outside in the manner described above to around the induction coil 10 and the generator 17 inside the housing 1, and the hot air heated by the heating plate 11 and the generator 17. Separation and discharge to the outside prevents an increase in the internal temperature of the induction range and overheating of the induction coil 10.

In the process in which air is introduced into the space below the induction coil 10 by the interlocking of the suction fan 14 and the discharge fan 15 and discharged through a gap between the partition 13 and the heating plate 11, the venturi By the effect, the flow rate is increased from the blowing speed of the suction fan 14 in proportion to the gap between the induction coil 10 and the suction fan 14 and the gap between the partition 13 and the heating plate 11. Accordingly, the flow rate of air passing through the induction coil 10 is increased. Accordingly, since hot air in the space below the induction coil 10 may be quickly discharged to the outside, the induction coil 10 may be cooled quickly.

As described above, the flow rate of the air passing through the gap between the partition wall 13 and the heating plate 11 is equal to the difference between the size of the space below the induction coil 10 and the gap between the partition wall 13 and the heating plate 11. Since the size of the space below the induction coil 10 increases, the flow rate of air passing through the gap between the partition 13 and the heating plate 11 is increased. As the flow rate of air passing through the gap between the partition 13 and the heating plate 11 increases, the flow rate of the air passing through the gap between the induction coil 10 and the heating plate 11 and the space below the induction coil 10 also increases. Will increase. Accordingly, the hot air inside the housing 1 is quickly discharged to the outside together with the air passing around the induction coil 10, whereby the inside of the housing 1 may be rapidly cooled.

In this embodiment, in order to ensure the size of the space below the induction coil 10 as large as possible, the suction fan 14 is installed on the base 16 of the rectangular frame having four legs. As described above, the pedestal 16 has an open surface between each of the straight legs and the rectangular frame so that air can freely pass between the straight legs and the opening surface of the rectangular frame. 2 and 3, the suction fan 14 is mounted on the rectangular frame of the pedestal 14 so that the intake port 5 of the housing 1, between the plurality of straight legs of the pedestal 16, and the pedestal 16 of the pedestal 16. Outside air can be sucked through the polygonal opening. Accordingly, the space below the induction coil 10 that affects the flow rate of air passing through the gap between the partition 13 and the heating plate 11 may extend to the upper surface of the generator 17. Therefore, the size difference between the space below the induction coil 10 and the partition 13 and the heating plate 11 is further increased.

Induction coil in the process of air is introduced into the space below the induction coil 10 by the suction fan 14 and the discharge fan 15 interlocked through the gap between the partition wall 13 and the heating plate 11. The induction coil 10 is increased as the flow rate is higher than the blowing speed of the suction fan 14 in proportion to the gap between the upper surface of the generator 10 and the generator 17 and the gap between the partition 13 and the heating plate 11. The flow rate of air passing through is further increased. Therefore, the induction range of this embodiment can quickly discharge the hot air inside the housing 1 to the outside to quickly cool the inside of the induction range.

As described above, the induction range according to the present embodiment is the interior of the housing by the exhaust fan 15, the heat radiation fan 18, the partition 13, the opening 131 of the partition 13, the exhaust duct 19 By rapidly cooling to prevent overheating of the plurality of induction coils 10, a reduction in the heating efficiency of the induction range generated due to overheating of the induction coils 10 is prevented. Accordingly, it is possible to provide a high efficiency induction range in which the efficiency of the induction range does not decrease even when the induction range is used for a long time.

So far I looked at the center of the preferred embodiment of the present invention. Those skilled in the art will appreciate that the present invention can be implemented in a modified form without departing from the essential features of the present invention. Therefore, the disclosed embodiments should be considered in descriptive sense only and not for purposes of limitation. The scope of the present invention is shown not in the above description but in the claims, and all differences within the equivalent scope should be interpreted as being included in the present invention.

1: housing
4: exhaust port 5: intake port
10: induction coil 11: hot plate
12: insulation 13: bulkhead
14: suction fan 15: discharge fan
16: pedestal 17: generator
18: heat dissipation fan 19: exhaust duct
20: adjustable feet
51: dust filter 52: slit plate
151: exhaust fan mounting plate
191: exhaust cover

Claims (6)

A housing (1) having at least one inlet port (5) and at least one exhaust port (4) formed on different sidewalls in the form of an open top box;
At least one induction coil 10 installed above the housing 1 in the form of a disc to generate an alternating magnetic field;
A heating plate 11 installed on the at least one induction coil 10 in the form of a flat plate covering an open upper surface of the housing 1 to convert an alternating magnetic field generated by the at least one induction coil 10 into heat;
A heat insulating material 12 inserted between the at least one induction coil 10 and the heating plate 11 in a flat plate shape to block heat from the heating plate 11 from being transferred to the at least one induction coil 10;
The upside space of the at least one induction coil 10 is installed to be close to the side wall on which the exhaust port 4 is formed so that the space below the at least one induction coil 10 and the space of the exhaust port 4 side. Partition wall 13 for separating;
Installed in the space on the side of the exhaust port 4 separated by the partition 13, the air introduced into the space below the at least one induction coil 10 is connected to the gap between the heating plate 11 and the partition 13. At least one discharge fan 15 that is sucked through and discharged to the outside; And
At least one suction fan 14 disposed below the at least one induction coil 10 to suck external air through the inlet port 5 of the housing 1,
The partition wall 13 is installed upright at a height higher than the installation height of the at least one suction fan 14, so that the gap between the partition wall 13 and the heating plate 11 is the at least one induction coil 10. And narrower than the gap between the at least one suction fan 14,
Air is introduced into the space below the at least one induction coil 10 by interlocking the at least one suction fan 14 and the at least one discharge fan 15 to allow the partition 13 and the heating plate. The gap between the at least one induction coil 10 and the suction fan 14 and the gap between the partition wall 13 and the heating plate 11 by the Venturi effect in the process of being discharged through the gap between the (11). Induction range, characterized in that the flow rate of the air passing through the at least one induction coil (10) increases as the flow rate increases than the blowing speed of the at least one suction fan (14). delete The method of claim 1,
The heating plate 11 and the at least one induction coil 10 are spaced apart from each other,
Some of the outside air sucked by the suction fan 14 flows into the gap between the heating plate 11 and the at least one induction coil 10 and flows into the space below the at least one induction coil 10. Induction range, characterized in that discharged through the gap between the partition (13) and the heating plate (11) by the discharge fan (15) together with the air. The method of claim 1,
A generator 17 installed below the housing 1 to supply an alternating current to the at least one induction coil 10;
A heat radiating fan (18) attached to the generator (17) to cool the generator (17); And
One end side is airtightly coupled to the outer surface of the generator 17 so that the heat dissipation fan 18 is built in, and the other end is airtightly coupled to the opening 131 of the partition 13 so as to communicate with the at least one exhaust port 4. An induction range, further comprising a duct 19. The method of claim 4, wherein
It further comprises a pedestal 16 is formed in a polygonal shape having a plurality of straight legs installed on the upper surface of the generator 17,
The at least one suction fan 14 is mounted in a polygonal frame of the pedestal 16 to between the intake port 5 of the housing 1, a plurality of straight legs of the pedestal 16, and the pedestal 16. Outside air through the polygonal opening of the
Air is introduced into the space below the at least one induction coil 10 by interlocking the at least one suction fan 14 and the at least one discharge fan 15 to allow the partition 13 and the heating plate. Proportional to the gap between the at least one induction coil 10 and the top surface of the generator 17 and the gap between the partition 13 and the heating plate 11 in the process of being discharged through the gap between the (11) Induction range, characterized in that the flow rate of the air passing through the at least one induction coil (10) increases as the flow rate is increased than the blowing speed of the at least one suction fan (14). The method of claim 4, wherein
It characterized in that it further comprises an exhaust cover 191 in the form of a curved pipe that is hermetically coupled to the opening of the partition 13 so that an inlet is in communication with the exhaust duct 19 and the outlet is directed toward the bottom surface of the housing 1. Induction range made with.

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