JP3736286B2 - Induction heating cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a stationary induction heating cooker for a kitchen or the like equipped with a roaster.
[0002]
[Prior art]
Conventionally, the structure of this type of induction heating cooker is used by being placed on a cabinet 1 in a kitchen, as shown in a perspective view of FIG.
[0003]
The induction heating cooker has a leg portion 3 that supports the main body 2 on the outer bottom surface of the box-shaped main body 2, a top plate 4 is provided on the outer top surface, and one set is provided below the top plate 4. The induction heating coils 5 and 6 are installed on the left and right sides of a substantially symmetrical shape, provided with cooling fans 7 and 8 on the lower front side and drive circuit boards 9 and 10 on the lower rear side, respectively corresponding to the induction heating coils 5 and 6. is doing. Air intake ports 11 and 12 are provided below the cooling fans 7 and 8. And it is set as the structure which provides the exhaust port 13 in the main body back surface.
[0004]
According to the above configuration, since the individual induction heating coils 5 and 6 and the drive circuit boards 9 and 10 are cooled by the individual cooling fans 7 and 8, the inside of the main body can be cooled very efficiently. . Moreover, the flow of the cooling air in the main body is shown in the schematic diagram of FIG. Outside air is sucked from the cabinet 1 secured by the legs 3 and the space of the bottom face of the main body through the intake ports 11 and 12 provided on the bottom face of the main body (flow of intake air: 14). The outside air sucked from the intake ports 11 and 12 cools the induction heating coils 5 and 6 and the drive circuit boards 9 and 10 (flow of cooling air inside the main body: 15), and from the exhaust port 13 provided on the back surface of the main body. It is discharged to the outside (flow of main body cooling air exhaust: 16).
[0005]
[Problems to be solved by the invention]
However, according to the above-described conventional configuration, two cooling fans 7 and 8 are required for the two induction heating coils 5 and 6 and the drive circuit boards 9 and 10, which increases the cost. In order to install and use on the cabinet 1, the wind exhausted from the exhaust port 13 provided on the back of the main body hits the wall surface of the kitchen, and part of it winds around the intake ports 11 and 12 on the bottom surface, Exhaust gas is re-inhaled from the intake ports 11 and 12, which affects the cooling performance.
[0006]
Further, the main body 2 does not have a roaster function, and when cooking roaster in the kitchen, another cooking device having a roaster function is required, and a cooking space has to be secured for this purpose. In addition, since the intake ports 11 and 12 for taking in outside air necessary for cooling the induction heating coils 5 and 6 and the drive circuit boards 9 and 10 are provided in front of the bottom surface of the main body, a roaster can be installed with the current configuration. In addition, since the width and height dimensions of the main body to be installed in the kitchen are determined, it was difficult to provide an induction heating cooker equipped with a roaster with a sufficient interior size in terms of configuration. .
[0007]
[Means for Solving the Problems]
In order to solve the above problems, the present invention includes an induction heating coil, a drive circuit, and a cooling fan in a main body, and includes a roaster having a sufficient width in the main body, and an exhaust port and an intake port. It is an object of the present invention to provide a stationary induction heating cooker in which the efficiency of cooling performance is improved by improving the position and shape.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 has a structure in which a wall can be approached in the vicinity of the outer shell excluding the top surface and the front surface of the main body when the main body is installed, and has a leg portion for supporting the main body on the bottom surface of the main body. A top plate for placing the cooking utensil on, a plurality of induction heating coils provided at a lower portion of the top plate, a lower side of the plurality of induction heating coils, and one of the left and right sides from the approximate center of the main body A roaster, a drive circuit for controlling energization, and a cooling fan for cooling the inside of the main body between the drive circuit and the back of the outer shell of the main body in the opposite space where the roaster is disposed, and the roaster is located A roaster exhaust port on the rear upper surface of the main body outer side, an exhaust port for discharging cooling air for cooling the main body, a first intake port for cooling the main body on the rear surface of the main body opposite to the side where the roaster is located, and the main body Outer bottom Write the provided and the drain hole and topping second inlet, said legs to secure a space between the cabinet to be placed with the second inlet, the first inlet Even if it is shielded, it will not break immediately, and the protection device does not work . Especially when installing in a kitchen cabinet, the first intake port provided on the back surface is Even if it is shielded for the reason, the second intake port on the bottom surface has a space secured by the legs for supporting the main body, and all the intake ports are shielded and will be broken immediately due to the temperature rise of the drive circuit in the device There is nothing.
[0009]
【Example】
( Reference Example 1)
Hereinafter, Reference Example 1 of the present invention will be described with reference to FIGS. 1 and 2. FIG. 1 shows a perspective view of the stationary induction heating cooker main body of the present invention installed in a kitchen cabinet, and FIG. 2 shows a schematic diagram of the flow of exhaust air in the roaster cabinet and cooling air in the main body.
[0010]
In FIG. 1, a box-shaped main body 21 has a top plate 22 placed on the upper surface, and two induction heating coils are provided on the lower side of the top plate 22 on the left side from the approximate center of the main body 21. A right induction heating coil 24 is arranged on the right side. The roaster unit 25 is provided below the left induction heating coil 23. Since the height dimension of the main body 21 is limited, only the left induction heating coil 23 is disposed in a limited space on the upper left side of the main body where the roaster portion 25 is disposed via a heat insulating partition wall 26. Has been. The exhaust in the roaster 25 is provided with an opening (a) 27 at the rear of the upper surface of the main body 21 and exhausted therefrom. The interior of the roaster section to the opening (a) 27 is connected through the exhaust duct 28 from the rear of the roaster section 25.
[0011]
Further, on the lower front side of the right induction heating coil 24, drive circuit boards 29 and 30 corresponding to the left and right induction heating coils constitute a laminated structure. Further, on the rear side, there is one cooling fan 31 that can cool the stacked drive circuit boards 29 and 30 simultaneously, and a cooling fan motor 32 that drives the cooling fan 31 is attached on the upper side, and an intake fan is installed. Covered by a case 33. Further, an air inlet 34 is provided on the outer rear surface of the main body 21, and the air inlet 34 is connected to the air intake fan case 33. The cooling air blown from the discharge port 33-a of the intake fan case 33 cools the drive circuit boards 29, 30 and the left and right induction heating coils 23, 24 arranged in a laminated structure, and the exhaust duct of the heat shield partition wall 26. Since the 28 side has a wall, it passes through the upper surface to the left and is discharged from the opening (b) 35 on the left side of the main body. As described above, the main body 21 is integrated by the outer shell, is supported by the legs 36 provided on the bottom of the outer shell, and is placed on the cabinet 37 of the kitchen.
[0012]
Next, the operation of this reference example will be described with reference to FIG. In all combinations using the left and right induction heating coils 23, 24 and the roaster unit 25, the cooling fan motor 32 is energized, and when the cooling fan 31 is rotated by driving the cooling fan motor 32, External air (intake air flow: 38) is sucked from the intake port 34 and cools the drive circuit boards 29 and 30 arranged in a laminated structure ahead of the discharge port 33-a of the intake fan case 33. However, it flows in the main body (flow of cooling air inside the main body: 39), and is exhausted from the opening (b) 35 on the left side of the main body (exhaust flow of main body cooling air: 40). Exhaust gas in the roaster section 25 is exhausted from an opening (a) 27 on the rear upper surface of the main body (exhaust flow in the roaster chamber: 41).
[0013]
As a result, the exhaust in the roaster section 25 and the exhaust at a relatively high temperature used for cooling the main body are performed from the opening (a) 27 on the upper surface of the main body and the opening (b) 35 on the left side of the main body, respectively. By providing the intake port 34 on the back of the main body, which is different from the opening direction of each exhaust port, it is possible to prevent exhaust air whose temperature has become relatively high due to cooling in the main body from being taken in from the intake port 34 again, and always to keep fresh outside air. Since it can be inhaled, it can be used without deteriorating the cooling performance inside the main body. In addition, since it is difficult to re-inhale hot air, the protective device does not operate due to a temperature rise inside the main body due to the hot air.
[0014]
Furthermore, the roaster and the cooling outlet for the main body are located at the rear of the upper surface of the main body and the left side of the main body, respectively, so that the exhaust heat does not directly hit the user, but also when the water spills on the top plate. Water ingress does not occur easily. In addition, since it is composed of a single cooling fan, noise can be reduced compared to the prior art, and the top surface is flat except for the opening of the exhaust port, and the cooking space can be expanded. It can be used safely without inadvertently blocking the air intake during cooking.
[0015]
Note that the present invention is not limited to the above-described reference example. One drive circuit board or three or more induction heating coils or drive circuit boards may be used, and the opening of the roaster exhaust port may be used. Even if the part is located at a place other than the top surface, the intake direction for sucking outside air from the intake port may not be the same direction as the direction in which hot air or smoke is discharged from the exhaust port. Furthermore, in the present reference example, exhaust for cooling the main body is performed on the side surface of the main body, but it may be performed at a place other than the side surface.
[0016]
( Reference Example 2)
The second reference example of the present invention will be described below with reference to FIGS. FIG. 3 shows a perspective view of the stationary induction heating cooker body of the present invention installed in a kitchen cabinet, and FIG. 4 shows a schematic diagram of the flow of exhaust air in the roaster cabinet and cooling air in the body. In FIG. 3, a main body 51, a top plate 52, a left induction heating coil 53, a right induction heating coil 54, a roaster section 55, an exhaust duct 58, drive circuit boards 59 and 60, a cooling fan 61, a cooling fan motor 62, and an intake fan case. 63, discharge ports 63-a, the air inlet 64, the legs 65, the cabinet 66 has the same structure as in reference example 1. The difference from the reference example 1 is that the wall on the exhaust duct 58 side of the heat shielding partition wall 56 is removed, and the opening (b) 35 for cooling the main body provided on the left side of the main body is eliminated, and the opening (c ) 57 is a configuration provided at the same location as the opening for exhausting the air in the roaster cabinet.
[0017]
FIG. 4 shows the flow of cooling air in the main body in this reference example. Outside air is sucked from the intake port 64 (flow of intake air: 67), and the drive circuit boards 59, 60 and the left and right induction heating coils 53, 54 arranged in the laminated structure are cooled (flow of cooling air inside the main body: 68), passing through the upper surface of the heat insulating partition wall 56 and discharged from the opening (c) 57 at the rear of the main body outline (flow of the main body cooling air: 68-a). At this time, the exhaust in the roaster cabinet is also discharged together from the opening (c) 57 (flow of exhaust in the roaster cabinet: 68-b).
[0018]
With this configuration, the following effects can be obtained. By providing the exhaust opening for cooling the main body at the same location as the exhaust opening for the roaster, not only the effects of Reference Example 1 but also the relatively hot wind of the roaster and main body cooling exhaust are brought out to the outside. It can be discharged, and since there is no extra opening around the outer shell, the design is neat.
[0019]
(Example 1 )
A first embodiment of the present invention will be described below with reference to FIGS. FIG. 6 shows a perspective view of the stationary induction heating cooker body of the present invention installed in a kitchen cabinet, and FIG. 6 shows a schematic diagram of the flow of exhaust air in the roaster cabinet and cooling air in the body.
[0020]
In FIG. 5, a main body 71, a top plate 72, a left induction heating coil 73, a right induction heating coil 74, a roaster section 75, a heat shield partition 76, an opening (c) 77, an exhaust duct 78, drive circuit boards 79 and 80, and cooling. The fan 81, the cooling fan motor 82, the intake fan case 83, the discharge port 83-a, the legs 85, and the cabinet 86 have the same configuration as in the reference example 2. The difference from the reference example 2 is that a first intake port 84-a is provided on the back surface of the main body outer shell and a second intake port 84-b is provided on the bottom surface of the main body outer shell, and the first intake port 84-a and the second intake port 84-b are provided. The intake port 84-b is configured to be connected to the intake fan case 83.
[0021]
The flow of the cooling air in the main body in the present embodiment is shown in FIG. Outside air drawn from the first intake port 84-a (flow of intake air from the first intake port: 87-a) and outside air drawn from the second intake port 84-b (second intake air) The flow of the intake air from the mouth: 87-b) is discharged together from the discharge port 83-a, and cools the drive circuit boards 79, 80 and the left and right induction heating coils 73, 74 arranged in the laminated structure ( The flow of cooling air inside the main body: 88), passes through the upper surface of the thermal barrier 56, and is discharged from the opening (c) 77 at the rear of the main body outer wall (flow of exhaust air from the main body cooling air: 89-a). At this time, the exhaust gas in the roaster cabinet is also discharged from the opening (c) 77 (exhaust flow in the roaster cabinet: 89-b).
[0022]
With this configuration, the following effects can be obtained. By providing the first air intake port 84-a and the second air intake port 84-b, the effects of the reference example 1 and the reference example 2 are provided, and also provided on the back surface when installed in the kitchen cabinet 86. Even if the first intake port 84-a is shielded for some reason, the second intake port 84-b on the bottom surface is secured by the legs 85 for supporting the main body, and all the intake ports are shielded. As a result, the temperature of the drive circuit inside the device will not break immediately or the protective device will not work. The same can be said even if the second intake port 84-b is shielded for some reason. Furthermore, by making the intake area larger than that of Reference Example 1 and Reference Example 2, the pressure loss to the cooling fan can be reduced and the outside air can be efficiently sucked. In addition, even if water or foreign matter enters from the first air inlet 84-a, it is discharged outside through the opening of the second air inlet 84-b. On the other hand, the reliability of the cooker body can be increased.
[0023]
The present invention is not limited to the embodiment described above, and the second air inlet may be in front of the bottom surface.
[0024]
【The invention's effect】
As described above, according to the first aspect of the invention, in particular, even if the first intake port provided on the back surface or the like is shielded for some reason, the second intake port on the bottom surface is a leg for supporting the main body. The space is secured by this, and all the intake ports are shielded, so that the temperature of the drive circuit in the device does not break immediately and the protective device does not work. In addition, even if water or foreign matter enters from the first air inlet, it is discharged to the outside through the opening of the second air inlet, so that it does not easily hit the fan motor and the cooker body is reliable against malfunction. An induction heating cooker that can enhance the performance can be realized.
[Brief description of the drawings]
FIG. 1 is a perspective view of an induction heating cooker when a cabinet is installed in Reference Example 1 of the present invention. FIG. 2 is a schematic diagram of the flow of exhaust air in the roaster cabinet and cooling air in the main body. during cabinet installation in the first embodiment of the exhaust and schematic view of a cooling air flow in the body [5] the present invention in a perspective view of an induction heating cooker during cabinet installation [4] the roaster box in reference example 2 FIG. 6 is a schematic view of the flow of exhaust air in the roaster cabinet and the flow of cooling air in the main body. FIG. 7 is a perspective view of the induction heating cooker when a conventional cabinet is installed. ] Schematic diagram of the flow of cooling air in the main unit [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1, 37, 66, 86, 106 ... Cabinet 2, 21, 51, 71, 91 ... Main body 3, 36, 65, 85, 105 ... Leg part 4, 22, 52, 72, 92 ... Top plate 5, 6 ... Induction heating coil 7, 8, 31, 61, 81, 101 ... Cooling fan 9, 10 ... Drive circuit board 11, 12, 34, 64 ... Intake port 13 ... Exhaust port 25, 55, 75, 95 ... Roaster section 26, 56, 76, 96 ... thermal barrier 27 ... opening (a)
28, 58, 78, 98 ... exhaust duct 32, 62, 82, 102 ... cooling fan motor 33, 63, 83, 103 ... intake fan case 33-a, 63-a, 83-a, 103-a ... discharge port 35 ... opening (b)
84-a, 104-a ... 1st inlet port 84-b, 104-b ... 2nd inlet port 57, 77, 97 ... Opening part (c)

Claims (1)

When the main body is installed, it has a structure that allows the wall to be close to the outer shell except for the top surface and the front surface of the main body. The bottom surface of the main body has legs that support the main body. A top plate, a plurality of induction heating coils provided at a lower portion of the top plate, a roaster that is below the plurality of induction heating coils, and on either one of the left and right sides from the approximate center of the main body, and the roaster is disposed In the opposite space, a drive circuit for controlling energization, and a cooling fan for cooling the inside of the main body between the drive circuit and the back of the main body outer wall, and a roaster exhaust on the upper surface of the main body outer rear part on the side where the roaster is located an exhaust port for discharging the cooling air of the mouth and the body for cooling, the formed, a first inlet for the main cooling body outer rear surface of the side opposite to the side where the roaster is located, the body shell bottom rearwardly drainage Hole Proof provided a second air intake opening, the leg portion is a space between the cabinet to be placed with the second inlet, broke immediately be shielded said first intake port An induction heating cooker that prevents the protective device from working .

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