JP3565154B2 - Induction heating cooker - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an induction heating cooker installed in a kitchen or the like.
[0002]
[Prior art]
Conventionally, this type of induction heating cooker is as shown in FIGS. In the figure, a main body 1 is used by being incorporated in a kitchen, and includes a top plate 2, an intake port 3, heating coils 4.5, motors 6.7, fans 8.9, and fan guides 10 and 11. Units 12 and 13, circuit units 14 and 15 arranged near the fan units 12 and 13, a roaster 16, and an operation unit 17 are provided.
[0003]
The configuration of the fan units 12 and 13 is such that the fans 8.9 are arranged horizontally as axial fans, the motors 6.7 are placed above the fans 8.9, and the fan guides 10 and 11 are provided with a fan suction port 18 in the lower part around them. There is formed an air passage that blows out from the outlet 19 of the fan guides 10 and 11 in a substantially horizontal direction to cool the circuit units 14 and 15 and also mainly the heating coils 4 and 5. A ventilation path 20 is formed between the intake port 3 and the fan suction port 18, and guides cooling air from the intake port 3 to the fans 8.9.
[0004]
The dimensions of the fan units 12 and 13 are almost the same because the depth A and the width B are in the radial direction of the fans 8.9 and the fans 8.9 are flat because they are axial fans. It is larger than C. For this reason, the spaces of the circuit units 14 and 15 and the operation unit 17 in front of the fan units 12 and 13 are narrowed.
[0005]
[Problems to be solved by the invention]
Normally, the vertical, horizontal, and height module dimensions of a heating cooker installed in a kitchen are usually determined, and the cooking cooker cannot be installed unless the size of the cooker main unit is less than these dimensions. The height dimension is often 220 mm for the built-in type to be inserted into the hole in the countertop, and 180 mm for the stationary type to be placed on the table.
[0006]
Therefore, it is difficult for the heating cooker to be installed in the kitchen to keep the smallest dimension of the height, width and height within a predetermined dimension, and the height C of the fan units 12 and 13 is restricted to the restricted dimension. It is necessary to obtain performance while doing so. Although the use of an axial fan is advantageous in terms of height, increasing the thickness of the fans 8.9 in order to increase the pressure generated by the fan units 12 and 13 due to the passage resistance in the cooking device main body 1 requires the height. The dimension C is increased, and the space D under the fan units 12 and 13 which is a part of the ventilation path 20 is narrowed, so that it becomes easy to absorb the water that has entered the ventilation path 20 from the intake port 3. there were.
[0007]
The present invention solves the above-mentioned conventional problems, and makes it easy to increase the pressure generated by a fan unit within a vertical dimension constraint having the smallest dimensions, such as an induction heating cooker installed in a kitchen or the like. This facilitates the configuration of the fan unit that makes it difficult for the fan to suck water that has entered the main body.
[0008]
[Means for Solving the Problems]
It has a motor with a rotating shaft arranged horizontally, a centrifugal fan, an outlet around the motor and the fan and blowing out cooling air, and a fan suction port provided in a lateral direction opposite to the motor. A fan unit having a fan unit, a heating coil, a circuit unit for driving the heating coil, a top plate on the outer surface of the main body, an intake port, an exhaust port, the intake port and the suction port of the fan. And a ventilation path having a space below the fan guide, and a partition forming the ventilation path is provided halfway from the intake port to the space, and between the fan guide and the partition. The air flow rises from the lower end of the partition wall through the ventilation gap and the space below the fan guide so that the ventilation gap is opened, and the suction of the fan is performed. In order to reach, the space below the fan guide and the ventilation gap are connected to each other, and the water that has entered from the intake port is stored in the space via the ventilation path, or the fan is By increasing the distance to the suction port and suppressing a decrease in cooling capacity, it is difficult for the fan to suck water that has entered the main body from the suction port .
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
The invention according to claim 1 is a motor having a rotation axis arranged horizontally, a centrifugal fan, an outlet around the motor and the fan and blowing out cooling air, and a lateral direction opposite to the motor. A fan unit having a fan guide having a fan suction port provided therein, a heating coil, a circuit unit for driving the heating coil, a top plate on the outer surface of the main body, an intake port, an exhaust port, and the intake port. An air passage having a space below the fan guide and connecting a mouth and a suction port of the fan is provided, and a partition wall forming the air passage is provided halfway from the intake port to the space, and An air gap is provided between the fan guide and the partition so that air flows upward from the lower end of the partition through the ventilation gap and the space below the fan guide. In order to reach the suction port of the fan, in which said fan guide lower space and the ventilation gap is provided a space connected, by which arranged suction port of the fan of the fan unit in the transverse direction of the fan unit, If the water or water droplets from the intake port or from the bottom does not move in the horizontal direction, the fan will not suck in water unless it moves in the horizontal direction, so it is basically difficult to suck in water, and since the wind will be sucked in from the horizontal direction, the horizontal direction (rotation axis direction) Even if the intake path is formed, the intake can be performed efficiently. Therefore, even when a water shield plate is provided between the fan and the intake port, the lateral intake capacity (air movement ability) can be increased, so that the lateral ventilation path is lengthened and the fan intake port is increased. Away from the intake port and the lower surface of the ventilation path, making it difficult for the fan to draw in water entering the main unit from the intake port, and at the same time, preventing a decrease in intake capacity and extending the fan in the direction of the rotation axis to increase the exhaust air volume and increase efficiency. The cooling capacity can be increased. Further, the partition wall forming the ventilation path is provided halfway from the intake port to the space, and a ventilation gap is provided between the fan guide and the partition wall, so that air flows from the lower end of the partition wall. The space under the fan guide and the ventilation gap are connected to ascend through the ventilation gap and the space below the fan guide to reach the suction port of the fan. By increasing the distance from the bottom of the ventilation passage to the fan's inlet through the space, or by suppressing the decrease in cooling capacity, making it difficult for the fan to suck water that has entered the main unit through the inlet It is.
[0010]
According to a second aspect of the present invention, the fan unit is disposed outside the main body with respect to the heating coil, and the blowout direction of the fan is set obliquely upward. It flows in the direction, and the heating coil and the top plate can be effectively cooled in addition to the circuit unit.
[0011]
The invention according to claim 3, the wall surface of the space below the fan guide below the fan unit, which has a side far from the mouth narrowing have suction motors on the opposite side fan is inclined downward, space under the fan unit Since the water that has entered flows away from the suction port of the fan, it is difficult for the fan to suck the water that has entered the main body.
[0012]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to FIGS.
[0013]
(Example 1)
1, 2 and 3 show a first embodiment of the present invention.
[0014]
The main body 22 to be placed and placed on the kitchen table 21 has kitchen unit dimensions, external dimensions are determined, and the height is often 180 mm. The top surface of the main body 22 is provided with a top plate 23 and an intake port 24 and an exhaust port 25 behind the top plate 23. In the main body, a fan unit 31 including heating coils 26 and 27, a motor 28, a fan 29, and a fan guide 30; circuit units 32 and 33 disposed near the fan unit 31; 35.
[0015]
The configuration of the fan unit 31 is such that the fan 29 is a centrifugal sirocco fan, the rotation axis is horizontally arranged, the motor 28 is placed on the outside of the main body, and the suction port 36 of the fan 29 is arranged around the periphery of the motor 28 on the opposite side. There is a fan guide 30 provided, and a cooling air is blown out from the outlet 37 of the fan guide 30 in a substantially horizontal direction to form an air passage for mainly cooling the circuit units 32 and 33. Here, the rotation axis of the fan 29 is horizontal in the lateral direction of the main body 22, whereas the blowing direction of the cooling air is substantially horizontal in the front direction of the main body 22. The direction in which the cooling air blows out has an angle.
[0016]
A ventilation path 39 having a space 38 whose lower portion has the height E in the drawing is formed between the intake port 24 and the fan suction port 36, and guides cooling air from the intake port 24 to the fan 29. .
[0017]
Further, the fan guide 30 and the partition 39a are separated so that a ventilation gap 38a is provided between the fan guide 30 and the ventilation path 39, and the partition 39a of the ventilation path 39 is on the way from the intake port 24 to the space 38. Is provided.
[0018]
The dimensions of the fan unit 31 are the minimum height F, the vertical (depth) G is larger at the outlet 37 than the height F, and the horizontal H includes the fan 29, the motor 28, the suction port 36, and the suction gap J. It is the largest.
[0019]
In the induction heating cooker configured as described above, the horizontal direction, which is the maximum dimension among the length, width, and height of the fan unit 31, coincides with the direction of the rotation axis of the fan 29, and the maximum dimension of the fan unit 31 Since the direction and the lateral direction, which is the maximum dimension direction where the main body 22 has a margin, match, the space occupied by the fan unit 31 is given to other components in the height direction and the depth direction other than the maximum dimension direction of the main body 22. The dimensional influence can be reduced.
[0020]
Further, since the fan 29 is of a centrifugal type, the pressure can be easily obtained if the diameter and the number of revolutions of the fan 29 are secured, and the air volume can be obtained by giving the length. Therefore, the fan unit 31 has the maximum dimension in the axial direction of the fan 29 and coincides with the maximum dimension direction of the main body 22, so that the fan 29 is lengthened within the restricted dimensions of the main body 22 to easily secure the air volume, and the fan capacity is reduced. This is to prevent the drop.
[0021]
In the above description, the blowing direction of the fan unit 31 is substantially perpendicular to the rotation axis of the fan 29, and the contribution of the length in the axial direction to the cooling capacity is desirably the largest. However, the present invention is not limited to this. The above effect can be obtained even if the angle between the rotation axis of the fan 29 and the blowing direction is set arbitrarily as long as they are not substantially the same direction.
[0022]
In addition, in the present embodiment, the fan 29 of the fan unit 31 disposed in the main body 22 is a sirocco fan which is a centrifugal fan capable of obtaining pressure as compared with an axial fan, and the suction ports 36 and 36a of the fan 29 Are arranged in the lateral direction of the fan unit 31 in the direction of the rotation axis. In this way, as indicated by the arrows in FIG. 2 and FIG. 3, before reaching the suction ports 36 and 36a of the fan 29, the air passes through the ventilation path 39 from the intake port 24, and the space 38 and the ventilation gap 38a are formed at the lower end of the partition wall 39a. Divide in two directions. Therefore, one flow passes through the space 38 at the bottom of the ventilation path 39 and reaches the side of the fan unit 31 while rising from the space 38 at the bottom. The other flow goes from the gap 38 a to the upper side outside the fan guide 30 and reaches the side of the fan unit 31.
[0023]
As a result, the path from the air inlet 24 to the fan air inlets 36 and 36a can be lengthened, and a distance can be obtained in the height direction from the space 38 at the bottom of the ventilation path 39. This is to make it difficult to suck the water that has entered inside 22.
[0024]
Further, by providing the fan suction port 36 in the lateral direction, the wind is sucked from around the fan suction port 36, so that the space around the fan unit 31 formed in the lateral direction (axial direction) (the space 38 or the upper part of the fan unit). A large amount of air flow in the lateral direction (axial direction) can be efficiently created in a space other than the portion where the exhaust port is located, such as a space, and the intake resistance can be reduced.
[0025]
In addition, before reaching the suction ports 36 and 36 a of the fan 29, the airflow is further divided into the space 38 and the ventilation gap 38 a at the lower end of the partition wall 39 a from the intake port 24 through the ventilation path 39, thereby further reducing the intake resistance. Can be smaller.
[0026]
A cross-flow fan can be considered as a kind of centrifugal fan. However, as in the present embodiment, in the case where the path from the intake port 24 to the exhaust port 25 is long and the ventilation path is bent in the middle, the pressure due to the ventilation in the main body is used. Since the loss increases, the sirocco fan used in this embodiment is more advantageous than the cross flow fan because a higher pressure can be obtained. In addition, the cross flow fan requires bearings at both ends of the fan, so an extra bearing is required compared to a sirocco fan, and this is disadvantageous in that the fan output can be obtained by effectively using the limited space in the main body. It is.
[0027]
When a cross-flow fan is used as the centrifugal fan, it is necessary to form a ventilation path from the intake port 24 to the upper part of the fan guide 30 due to its structural characteristics. Become. On the other hand, in the case of the sirocco fan, it passes through the ventilation path 39 and the space 38 at the bottom of the ventilation path 39 from the intake port 24 and reaches the side of the fan unit 31 while rising from the space 38 at the bottom. It is.
[0028]
Further, in the present embodiment, a space 38 which is connected to the ventilation path 39 and forms a part of the ventilation path 39 is provided below the fan guide 30 constituting the fan unit 31, and the leading end of the space 38 can be seen from FIG. In addition, a front wall 40 is arranged at a portion reaching the outlet 37 of the fan unit 31, so that the space 38 has a large depth and volume in a limited space.
[0029]
With this configuration, when a large amount of water enters at a stretch from the intake port 24, after the water reaches the space 38 below the ventilation passage 39, the flow velocity of the water depends on the distance reaching the front wall 40 and the space volume. The bounce wave after hitting the front wall 40 can be reduced. As a result, it is possible to keep the water that has entered from the intake port 24 into the space 38, and make it difficult for the fan 29 to suck the water from the intake ports 36 and 36a and reach the charged parts and structures inside the main body 22, such as the circuit units 32 and 33.
[0030]
(Example 2)
FIG. 4 is a sectional view of an induction heating cooker according to a second embodiment of the present invention.
[0031]
In the figure, a main body 42, a top plate 43, an intake port 44, an exhaust port 45 (not shown), heating coils 46 and 47 (not shown), a motor 48 (not shown), a fan 49 and a fan guide 50. And the circuit units 52 and 53 disposed near the fan unit 51, the roaster 54 (not shown), the operation unit 55, and the outlet of the fan unit 51 correspond to FIG. They are similar to parts or parts.
[0032]
Further, a ventilation path 58 having a space 57 below the fan unit 51 between the intake port 44 and the fan suction port 54 (not shown), a ventilation gap 57 a and a partition wall 58 a, and vertical and horizontal directions of the fan unit 31. The height dimension relationship is the same as that of the parts or parts corresponding to FIG. 2 of the above embodiment.
[0033]
Further, in the fan unit 51, the fan 49 and the fan guide 50 constituting the air sending unit are exposed to the rear side and outside of the heating coil 46 as in the above-described embodiment.
[0034]
The difference from the above-described embodiment is that the vicinity 59 of the outlet of the fan guide 50 is inclined such that the leading end side of the cooling air blows upward, and the cooling air flows obliquely upward from the outlet 56 of the fan guide 50 as indicated by an arrow in the figure. It is a point blowing out in the direction.
[0035]
In this embodiment, a flow dividing plate 60 is provided below the fan unit outlet 56 so that the cooling air partially flows in a substantially horizontal direction. The department is trying to reach. Further, a ventilation hole 62 is opened in the support plate 61 of the heating coil 46 on the side of the fan unit 51 on a side close to the fan unit 51 so that cooling air blown obliquely upward from the fan unit 51 can easily hit the heating coil 46.
[0036]
With this configuration, most of the fan unit 51 is disposed so as to be exposed to the outside of the main body relative to the heating coil 46, and since the blowout direction of the fan 49 is obliquely upward, the cooling air flowing out of the fan 49 It flows obliquely upward from below in the main body 42. For this reason, the heating coil 46 is cooled from the back in addition to the circuit units 52 and 53, and a part of the cooling air that hits the heating coil 46 also hits the top plate 43, and the heating coil 46 and the top plate 43 are added to the circuit units 52 and 53. Is also effectively cooled.
[0037]
(Example 3)
5 and 6 are sectional views of an induction heating cooker according to a third embodiment of the present invention.
[0038]
In the drawing, a fan unit 81 including a main body 72, a top plate 73, an intake port 74, an exhaust port 75, heating coils 76, 77, a motor 78, a fan 79, and a fan guide 80, and a fan unit 81 are arranged near the fan unit 81. The circuit units 82 and 83, the roaster 84, the operation unit 85, and the outlet of the fan unit 81 are the same as those in the above embodiment.
[0039]
Further, between the intake port 74 and the fan suction port 90, a ventilation path 88 (not shown) having a space 87 below the fan unit 81, a partition wall 88a, and the vertical, horizontal, and height dimensions of the fan unit 81 are also shown. This is similar to the above embodiment.
[0040]
The difference from the above-described embodiment is that the bottom wall 89 of the space 87 below the fan unit 81 is inclined such that the outer side is lower than the auxiliary suction port 90a on the side away from the main suction port 90 of the fan 79, The higher side is higher than the outer bottom surface 91 of the main body 72 by L in FIG. An opening 92 is provided near the lower end of the bottom wall surface 89, and an opening 93 is provided in the outer bottom surface 91 at a position substantially coincident therewith.
[0041]
In the above configuration, the water that has entered the space below the fan unit 81 from the intake port 74 flows along the bottom wall 89 in a direction away from the main suction port 90 of the fan 79, so that water or water splashes 79 is difficult to inhale. In addition, since the water is discharged from the openings 92 and 93 to the outside of the fan unit 81 in a short time, the water that has entered the main body 72 can be harder to be sucked by the fan 79.
[0042]
【The invention's effect】
As described above, according to the first to third aspects of the present invention, when the external dimensions of the main body are determined, such as a type that is installed in a kitchen, the generation capacity of the fan unit is reduced within the minimum vertical dimension. It is an object of the present invention to provide an induction heating cooker having a fan unit which is high and which is hard to suck water entering the main body from an intake port.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an induction heating cooker according to a first embodiment of the present invention; FIG. 2 is a sectional view of a main part of the induction heating cooker according to the first embodiment of the present invention; FIG. 4 is a cross-sectional view of an induction heating cooker according to a first embodiment. FIG. 4 is a cross-sectional view of an induction heating cooker according to a second embodiment of the present invention. FIG. 5 is an induction heating cooker according to a third embodiment of the present invention. FIG. 6 is a sectional view of a main part of an induction heating cooker according to a third embodiment of the present invention. FIG. 7 is an exploded perspective view of a conventional induction heating cooker. FIG. 8 is a conventional induction heating cooker. Cross-sectional view of [Description of symbols]
22, 42, 72 Main body 23, 43, 73 Top plate 24, 44, 74 Inlet 25 Outlet 26, 27, 46, 76, 77 Heating coil 28, 78 Motor 29, 49, 79 Fan 30, 50, 80 Fan Guides 31, 51, 81 Fan units 32, 33, 52, 53, 82, 83 Circuit units 36, 36a, 90, 90a Suction port 38, 87 Space 38a Ventilation gap 39 Ventilation path 39a Partition wall 89 Wall surface

Claims (3)

It has a motor with a rotating shaft arranged horizontally , a centrifugal fan, an outlet around the motor and the fan and blowing out cooling air, and a fan suction port provided in a lateral direction opposite to the motor. a fan unit having a fan guide, and a heating coil, a circuit unit for driving the heating coil, a top plate of the main body outer surface, an intake port and an exhaust port, and a suction port of the fan and the air inlet and a ventilation passage having a space below the fan guide with connecting, partition walls forming the air passage is provided halfway to reach the space from the intake port, and between the fan guide and the front Ki隔 wall as air gap becomes available during the suction from the air flow the lower end of the partition wall of the fan up through the ventilation gap and the fan guide below the space Reaches to, induction heating cooker and the fan guide lower space and the ventilation gap is provided a space connected to. Arranged fan unit outside the body than the heating coil, the induction heating cooker of claim 1 Symbol mounting formed by the blowing direction of the fan obliquely upwardly. The walls of the space below the fan guide below the fan unit, the induction heating cooker of claim 1, wherein comprising a side far from the mouth narrowing have suction motors on the opposite side fan is inclined below.

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