JP2002110329A - Induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an induction heating cooker, whose outer body dimension is given like a type for installation in a kitchen, which has an improved generation performance of a fan unit in a constraint of the minimum longitudinal direction size which will not easily suck in water infiltrated inside the body from a suction port. SOLUTION: The maximum size direction among height, width and depth of a fan unit 31 is matched with the rotation axis direction of a fan 29, which, then, is matched with the maximum size direction among height, width and depth of a body 22, and at same time, the blowing direction of the fan unit 31 is made to have an angle with the rotation axis of the fan 29.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an induction heating cooker installed in a kitchen or the like.

[0002]

2. Description of the Related Art Conventionally, this type of induction heating cooker is shown in FIGS.
It was as shown. In the figure, a main body 1 is used by being incorporated in a kitchen, and a top plate 2, an intake port 3,
Heating coils 4.5, motors 6,7, fans 8.9,
Fan unit 12 composed of fan guides 10 and 11
13, circuit units 14 and 15 arranged near fan units 12 and 13, roaster 16 and operation unit 17
And

The configuration of the fan units 12 and 13 is such that fans 8.9 are arranged horizontally as axial fans, motors 6.7 are disposed above the fans, and a fan guide provided with a fan suction port 18 in the lower part around them. There are 10.11,
The circuit units 14 and 15 are mainly blown out from the outlets 19 of the fan guides 10 and 11 so as to mainly
-An air passage for cooling 5 is also formed. In addition, intake port 3
An air passage 20 is formed between the air inlet 3 and the fan suction port 18, and guides cooling air from the air inlet 3 to the fans 8.9.

The dimensions of the fan units 12 and 13 are almost the same because the depth A and the width B are the same in the radial direction of the fans 8.9, and the fan 8.9 is flat because it is an axial fan. The dimension is larger than the height C. For this reason, the space of the circuit units 14 and 15 and the operation unit 17 in front of the fan units 12 and 13 is narrowed.

[0005]

The length, width and height of the heating cooker usually installed in the kitchen are usually fixed in module size. If the cooking device body is not smaller than this size, it cannot be installed. The height dimension is often 220 mm for the built-in type to be inserted into the hole of the countertop and 180 mm for the stationary type to be placed on the table.

Therefore, it is difficult for the heating cooker to be installed in the kitchen to keep the smallest one of the height, width and height within a predetermined size, and the fan unit 12.1.
It is necessary to obtain the performance while keeping the height C of 3 at the restricted dimension. Although the use of an axial fan is advantageous in terms of height, the fan unit 12
Thickening the fans 8 and 9 in order to increase the pressure generated at 13 increases the height C and increases the ventilation path 2
Space D below the fan units 12 and 13 which are part of
And it becomes difficult to absorb the water that has entered the ventilation path 20 from the intake port 3.

SUMMARY OF THE INVENTION The present invention solves the above-mentioned conventional problems, and makes it easy to increase the pressure generated by a fan unit within the minimum size in the vertical direction, such as an installation type induction heating cooker such as a kitchen. This facilitates the configuration of the fan unit that makes it difficult for the fan to suck water that has entered the main body from the intake port.

[0008]

Means for Solving the Problems The length of the fan unit,
Match the direction of the maximum dimension of the width and height with the direction of the rotation axis of the fan, and change the direction of the rotation axis of the fan to the vertical, horizontal,
The height is made to match the direction of the maximum dimension, so that the fan can easily generate pressure and air volume, and the space under the fan unit which is a part of the ventilation path can be secured.

[0009]

According to the first aspect of the present invention, the direction of the largest dimension among the vertical, horizontal, and height of the fan unit is made to coincide with the direction of the rotation axis of the fan, and the direction of the rotation axis of the fan is changed. The vertical direction, the horizontal direction, and the height of the main unit are made to match the direction of the maximum dimension, and the blowing direction of the fan unit is set to have a predetermined angle with the rotation axis of the fan. Since the maximum dimensional direction of the fan unit matches, the effect of the space occupied by the fan unit on other components of the main body is reduced, and the blowout direction of the fan unit is made to have an angle with the rotation axis. The cooling capacity is proportional to the axial length of the fan, and the direction of the fan's rotation axis is aligned with the direction of the largest dimension among the vertical, horizontal, and height directions of the main body to prevent the cooling capacity of the fan from lowering. It is intended.

[0010] The invention described in claim 2 is particularly advantageous in claim 1.
The fan suction port of the fan unit described in (1) is arranged in the lateral direction of the fan unit.Water and water droplets from the intake port or from the bottom surface do not move in the horizontal direction, so the fan does not suck water. It is difficult to suck in water, and the wind is sucked in from the lateral direction, so that efficient intake can be achieved even if a lateral (rotary axis) intake path is formed. Therefore, even when a water shield plate is provided between the suction port and the intake port, the lateral intake capacity (air movement capacity) can be 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 body 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 as described above. The cooling capacity can be increased efficiently.

According to a third aspect of the present invention, there is provided the fan unit according to any one of the first to third aspects, wherein a space is provided below the fan guide constituting the fan unit, the space being connected to the ventilation path, and the partition between the fan guide and the ventilation path is provided. It is a space where the ventilation gap and the suction port of the fan are connected to each other, and the water entering from the intake port is stored in the space via the ventilation path, or from the bottom of the ventilation path, By increasing the distance between the fan and the suction port, it is difficult for the fan to suck water that has entered the main body from the suction port while suppressing a decrease in cooling capacity.

According to a fourth aspect of the present invention, the fan unit is disposed outside the heating coil rather than the heating coil, and the blowing direction of the fan is obliquely upward. Flowing obliquely upward from above, the heating coil and the top plate can be effectively cooled in addition to the circuit unit.

According to a fifth aspect of the present invention, the wall surface below the space below the fan unit is inclined downward on the side farther from the main suction port of the fan, so that the water entering the space below the fan unit is inclined. Flows in a direction away from the fan suction port, so that the fan can hardly suck water that has entered the main body.

[0014]

Embodiments of the present invention will be described below with reference to FIGS.

(Embodiment 1) FIGS. 1, 2 and 3 show a first embodiment of the present invention.

The main body 22 placed on the kitchen table 21 has a kitchen unit size, an external size is determined, and the height is often 180 mm. On the upper surface of the main body 22, a top plate 23 and an intake port 2 behind the top plate 23 are provided.
4. Equipped with an exhaust port 25. 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.

The structure of the fan unit 31 is as follows. The fan 29 is a centrifugal sirocco fan, the rotation axis of which is arranged horizontally, the motor 28 is placed outside the main body, and the fan 29 is sucked around these around the opposite side of the motor 28. Mouth 3
There is a fan guide 30 provided with an air passage 6, 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.

Further, the fan suction port 3 is
6, a ventilation path 39 having a space 38 whose lower portion has the height of E in the drawing is formed.
Cooling air is led to 9.

Further, the fan guide 30 has a ventilation gap 38a between the fan guide 30 and the ventilation path 39.
And the partition wall 39a are separated from each other.
9 a is provided halfway from the air inlet 24 to the space 38.

The dimensions of the fan unit 31 are such that the height F is the minimum, the vertical (depth) G is larger at the outlet 37 than the height F, and the horizontal H is the fan 29, the motor 28 and the suction port 36.
And the suction gap J, the maximum.

In the induction heating cooker constructed as described above, the horizontal direction, which is the maximum dimension among the vertical, horizontal and height of the fan unit 31, coincides with the direction of the rotation axis of the fan 29, and Since the maximum dimension direction of the main body 22 and the lateral direction which is the maximum dimension direction where the main body 22 has a dimensional margin coincide with each other, another configuration in which the space occupied by the fan unit 31 is not in the maximum dimension direction of the main body 22 but in the height direction and the depth direction. The dimensional influence on parts can be reduced.

Further, since the fan 29 is of a centrifugal type, the pressure can be easily obtained by securing the diameter and the number of rotations of the fan 29, and the air volume can be obtained by giving the length. Accordingly, 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.
This prevents a decrease in fan capacity.

In the above description, the blowing direction of the fan unit 31 is set to be substantially perpendicular to the rotation axis of the fan 29, and the axial length contributes most to the cooling capacity, which is desirable. Instead, the above-described 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.

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 a pressure as compared with an axial fan, and the suction ports 36, 36a of the fan 29 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 arrows in FIGS. 2 and 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 the space 38 at the bottom.
And reaches the side of the fan unit 31. 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.

As a result, the path from the intake port 24 to the fan intake ports 36, 36a is lengthened, and the ventilation path 39
Since the distance in the height direction can also be obtained from the space 38 at the bottom, it is difficult for the fan 29 to suck in water that has entered the main body 22 from the air inlet 24.

Further, since the fan suction port 36 is provided in the lateral direction, the wind is sucked from around the fan suction port 36, so that the space (the space 38 or the fan) around the fan unit 31 formed in the lateral direction (axial direction). 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 the space above the unit, and intake resistance can be reduced.

The suction ports 36 of the fan 29
By the time, the space 38 and the ventilation gap 38a are passed through the ventilation path 39 from the intake port 24 at the lower end of the partition wall 39a.
By diverting in the direction, the intake resistance can be further reduced.

A cross-flow fan can be considered as one type of centrifugal fan.
Since the pressure loss due to the ventilation in the main body becomes large in the case where the path from 4 to the exhaust port 25 is long and the ventilation path is bent in the middle, the sirocco fan used in this embodiment has higher pressure than the cross flow fan. Is advantageously obtained. In addition, a cross-flow fan requires bearings at both ends of the fan, so an extra bearing is required as compared with a sirocco fan, which is disadvantageous in that the fan output can be obtained by effectively using the limited space in the main body. It is.

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 portion of the fan guide 30 due to its structural characteristics. It becomes a path to inhale. 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 ascending from the space 38 at the bottom. It is.

Further, in this embodiment, a space 38 is formed below the fan guide 30 constituting the fan unit 31 and connected to the ventilation path 39 to form a part of the ventilation path 39.
As can be seen from FIG. 3, the front end of the space 38 is provided with a front wall 40 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. ing.

According to this configuration, when a large amount of water enters at a stretch from the intake port 24, the water flows into the space 3 below the ventilation path 39.
After reaching 8, that before Ki de small rebound wave after hitting the front wall 40 and the water flow rate by the distance and the space volume reaching the front wall 40 in the direction. As a result, the water that has entered from the intake port 24 is retained in the space 38, and the fan 29 is sucked by the suction ports 36
It is possible to make it difficult for water to be sucked from a to reach the charged parts and structures inside the main body 22, such as the circuit units 32 and 33.

(Embodiment 2) FIG. 4 is a sectional view of an induction heating cooker according to a second embodiment of the present invention.

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 4 are provided.
7 (not shown), a fan unit 51 including a motor 48 (not shown), a fan 49 and a fan guide 50
And the circuit unit 5 arranged near the fan unit 51
2.53, roaster 54 (not shown), operation unit 55,
The outlet of the fan unit 51 is the same as the corresponding part or component in FIG.

Further, the fan inlet 5
4 (not shown), the ventilation path 58 having a space 57 below the fan unit 51, the vertical, horizontal, and height dimensions of the ventilation gap 57a and the partition wall 58a, and the fan unit 31 are also the same as those in the above embodiment. Are the same as the parts or portions corresponding to FIG.

The fan unit 5 is similar to the above embodiment.
In 1, a fan 49 and a fan guide 50 constituting a wind blowing unit are exposed to the heating coil 46 on the rear side and outside.

The difference from the above embodiment is that the fan guide 5
The point 59 near the outlet 0 is inclined such that the leading end side of the cooling air blows upward, and the cooling air blows obliquely upward from the outlet 56 of the fan guide 50 as shown by the arrow in the figure.

In this embodiment, the fan unit outlet 5
The lower circuit unit 5 is provided in two stages by providing a flow dividing plate 60 at a lower portion of the cooling unit 6 so that a part of the cooling air flows in a substantially horizontal direction.
A part of the cooling air reaches 2. further,
The support plate 61 of the heating coil 46 on the fan unit 51 side has a ventilation opening 62 on the 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.

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 blowing direction of the fan 49 is obliquely upward, the fan unit 51 comes out of the fan 49. The cooling air 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. Is also effectively cooled.

(Embodiment 3) FIGS. 5 and 6 are sectional views of an induction heating cooker according to a third embodiment of the present invention.

In the figure, 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, Circuit units 82 and 83, roaster 84, and operation unit 8 arranged nearby
5. The outlet of the fan unit 81 is the same as that in the above embodiment.

Also, the fan inlet 9 through the air inlet 74
During the period from zero to zero, the vertical, horizontal, and height dimensional relationships of the ventilation unit 88 (not shown) having the space 87 below the fan unit 81, the partition wall 88a, and the fan unit 81 are the same as those in the above embodiment. .

The difference from the above embodiment is that the bottom wall 89 of the space 87 below the fan unit 81 is separated from the main suction port 90 of the fan 79 by the auxiliary suction port 9.
The outer side of the main body 72 is inclined by L in FIG. Further, an opening 92 is provided near the lower end of the bottom wall surface 89, and the outer bottom surface 9 is located at a position substantially matching.
1 also has an opening 93.

In the above configuration, the water that has entered the space below the fan unit 81 from the intake port 74 is
Since the water flows along the direction 9 away from the main suction port 90 of the fan 79, it is difficult for the fan 79 to suck water or water splash. 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 made more difficult for the fan 79 to suck in.

[0044]

As described above, according to the first to fifth aspects of the present invention, when the external dimensions of the main body are fixed, such as a type to be installed in a kitchen, the fan can be controlled within the minimum vertical dimension. It is an object of the present invention to provide an induction heating cooker having a fan unit which has a high generation capacity of a unit and which has a fan unit which does not easily suck water entering the main body from an air inlet.

[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. 3 is a cross-sectional view of the induction heating cooker according to the first embodiment of the present invention.

FIG. 4 is a sectional view of an induction heating cooker according to a second embodiment of the present invention.

FIG. 5 is an exploded perspective view of 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 sectional view of a conventional induction heating cooker.

[Explanation of symbols]

 22, 42, 72 Main body 23, 43, 73 Top plate 24, 44, 74 Inlet 25 Exhaust 26, 27, 46, 76, 77 Heating coil 28, 78 Motor 29, 49, 79 Fan 30, 50, 80 Fan Guide 31, 51, 81 Fan unit 32, 33, 52, 53, 82, 83 Circuit unit 36, 36a, 90, 90a Suction port 38, 87 Space 38a Ventilation gap 39 Ventilation path 39a Partition wall 89 Wall surface

Continued on the front page (72) Inventor Tetsuya Kaji 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. F term (reference) 3K051 AB09 AD03 AD30

Claims (5)

[Claims] 1. A fan unit having a motor, a fan, and a fan guide, a heating coil, a circuit unit for driving the heating coil, a top plate on an outer surface of a main body, an intake port, an exhaust port, and the intake port. A ventilation path connecting the fan unit to the fan unit, wherein the direction of the largest dimension among the vertical, horizontal, and height of the fan unit installed in the main body matches the direction of the rotation axis of the fan, and the rotation of the fan An induction heating cooker in which the direction of the shaft matches the direction of the largest dimension among the length, width and height of the main body, and the blowing direction of the fan unit has an angle with the rotation axis of the fan. 2. A fan unit having a motor, a fan, and a fan guide, a heating coil, a circuit unit for driving the heating coil, a top plate on an outer surface of the main body, an intake port, an exhaust port, and the intake port. 2. The induction heating cooker according to claim 1, further comprising a ventilation path connecting the fan unit, wherein a suction port of a fan of the fan unit disposed in the main body is arranged in a lateral direction of the fan unit. 3. A fan unit having a motor, a fan, and a fan guide, a heating coil, a circuit unit for driving the heating coil, a top plate on an outer surface of the main body, an intake port, an exhaust port, and the intake port. An induction heating cooker comprising: a ventilation passage connecting the fan unit; and a space connected to a suction port of the fan provided below the fan guide and between the fan guide and a partition of the ventilation passage. 4. The induction heating cooker according to claim 1, wherein the fan unit is disposed outside of the main body with respect to the heating coil, and a blowing direction of the fan is obliquely upward. 5. The induction heating cooker according to claim 3, wherein a wall surface below the space below the fan unit is inclined downward on a side far from the main suction port of the fan.