JP2011198491A - Induction heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an induction heating cooker capable of storing a large number lead wires which an induction heating coil contains for an extremely large pan having an outer diameter equivalent to an extremely large pan having a bottom diameter one and half to twice the bottom diameter of a conventional pan.SOLUTION: An induction heating coil storing chamber 3 is provided at a body 1 to store a plurality of induction heating coils 4. The outer diameter of an induction heating coil 4a on the left side is one and half to twice the outer diameter of an induction heating coil 4b on the right side, and constituted of a plurality of split coils. Each of the split coils has two to three lead wires. A terminal block 5 is arranged in the rest of a vacant region other than the region occupied by a group of induction heating coils in the induction heating coil storing chamber 3. The wiring of the lead wire of each of the split coils of the induction heating coils 4a on the left side to the terminal block and the outside is drawn into an air course 6 at the lower portion of the induction heating coil 4a and bundled there so as to be connected to a substrate through the air course 6. By this, the vacant region in the induction heating coil storing chamber 3 is expanded to allow wiring operation to be performed.

Description

  The present invention relates to an induction heating cooker, and more particularly to a lead wire process for an induction heating coil.

  A conventional induction heating cooker has a flat top plate, and a pan placed on the top plate is induction-heated by an alternating magnetic field emitted from an induction heating coil disposed below the top plate. So you can heat the pot without using fire. Some conventional induction heating cookers have at least two induction heating coils, and most of them have two induction heating coils arranged on the front side and the right side when viewed from the side of the cooker. (For example, Patent Documents 1 and 2). The lead wire of this induction heating coil is composed of 2 to 3 per induction heating coil, and includes a substrate on which a drive circuit for driving the induction heating coil and a control unit such as a microcomputer are mounted, an induction heating coil, A terminal block interposed in the wiring connecting the two is provided in an empty space outside the induction heating coil.

JP 2002-198164 A (FIGS. 1 to 4) Japanese Patent Laying-Open No. 2005-005132 (pages 4 to 6, FIG. 2)

However, since the conventional examples described in Patent Document 1 and Patent Document 2 are configured as described above, a specially large pan outside the standard whose bottom diameter is much larger than the outer diameter of the conventional induction heating coil. (For example, it cannot respond to cooking of a pan having a bottom diameter 1.5 to 2 times the outer diameter of a conventional induction heating coil (hereinafter sometimes referred to as an extra large pan)). Also, even if you try to heat an oversized pan with a conventional induction heating coil, the area that can be heated with the induction heating coil is narrower than the bottom area of the oversized pan, so the portion of the pan where the heat protrudes from the induction heating coil of the oversized pan during heating There is a problem that cooking efficiency is very low because it is easy to escape to the outside through the side of the oversized pan.
Then, in order to solve this problem, an induction heating coil having an outer diameter 1.5 to 2 times the outer diameter of the induction heating coil used in the conventional induction heating cooker is provided, and the above-mentioned oversized pan However, it is conceivable to devise an induction heating cooker capable of cooking. In this case, since the premise is a built-in type in which the induction heating cooker is stored in the kitchen, the shape of the induction heating cooker body is a substantially rectangular parallelepiped. Therefore, the horizontal installation area of the induction heating coil housing chamber in the induction heating cooker body is limited to the size of the casing of the induction heating cooker body to the maximum extent. An induction heating coil for an oversized pan is stored in this storage chamber. This induction heating coil may be composed of a plurality of divided coils. In this case, two to three lead wires are provided from each divided coil. Out. In other words, the number of lead wires is determined by the number of divided coils constituting the extra large pan, and a large number of lead wires come out from the induction heating coil for the extra large pan. In many cases, the terminal block for wiring with the substrate is provided on the side of the induction heating coil.
On the other hand, since the area occupied by the induction heating coil for the oversized pan is very large, the empty area in the induction heating coil housing chamber becomes very narrow, and a large number of lead wires must be accommodated using this narrow empty area. The problem was that wiring work was difficult.

  The present invention has been made in order to solve the above-mentioned problems, and its main purpose is almost the same as that of an oversized pan having a bottom diameter 1.5 to 2 times the bottom diameter of a conventional pan. The object is to obtain an induction heating cooker that can accommodate a plurality (four or more) lead wires of an induction heating coil for an extra-large pot having an outer diameter.

  The induction heating cooker according to the present invention is a cooling chamber that is disposed in a lower part of each induction heating coil that constitutes the induction heating coil group and a storage chamber that accommodates the induction heating coil group and the terminal block, and cools the induction heating coil. An air passage through which the wind passes, and the induction heating coil group includes a first induction heating coil and a second induction heating coil, and the outer diameter of the first induction heating coil is the second induction heating coil. 1.5 to 2 times the outer diameter of the induction heating coil, each of which is composed of a plurality of divided coils each having a plurality of lead wires, and the terminal block is the remaining area excluding the area occupied by the induction heating coil group in the accommodation chamber Wiring between the terminal block and the outside of the lead wire provided in each empty coil of each divided coil of the first induction heating coil passes through the air passage.

  The induction heating cooker according to the present invention is a cooling chamber that is disposed in a lower part of each induction heating coil that constitutes the induction heating coil group and a storage chamber that accommodates the induction heating coil group and the terminal block, and cools the induction heating coil. An air passage through which the wind passes, and the induction heating coil group includes a first induction heating coil and a second induction heating coil, and the outer diameter of the first induction heating coil is the second induction heating coil. 1.5 to 2 times the outer diameter of the induction heating coil, each of which is composed of a plurality of divided coils each having a plurality of lead wires, and the terminal block is the remaining area excluding the area occupied by the induction heating coil group in the accommodation chamber Since the wiring between the terminal block and the outside of the lead wire provided in each divided coil of the first induction heating coil passes through the air passage, the empty area in the accommodation chamber can be expanded. The first induction heating coil for the oversized pan Also becomes possible wiring work in a narrow space area.

It is a perspective view which shows the external appearance of the state which removed the top plate of the induction heating cooking appliance in Embodiment 1 of this invention. It is a perspective view of the main body 1 of the state which removed the top plate of the induction heating cooking appliance in Embodiment 1 of this invention. It is a figure which shows the structure of the air path 6 shown in FIG. It is a schematic diagram which shows a mode that the wiring in FIG. 3 was fixed using the binding band.

Embodiment 1 FIG.
FIG. 1 is a perspective view showing an external appearance of the induction heating cooker according to Embodiment 1 of the present invention with the top plate removed, and FIG. 2 is a top view of the induction heating cooker according to Embodiment 1 of the present invention. It is a perspective view of the main body 1 in a state. 1 and 2, an induction heating cooker 10 includes a main body 1 including an induction heating coil housing chamber 3 that houses a plurality of induction heating coils 4 (hereinafter sometimes referred to as an induction heating coil group), and a main body. 1 comprises a top plate (not shown) installed at the top of 1 and an operation display part (not shown). An induction heating coil accommodation chamber is disposed under the top plate, and a plurality of induction heating coils 4 are disposed in the induction heating coil accommodation chamber.
Further, the present embodiment is characterized in that the outer diameters of the left and right induction heating coils 4 are greatly changed. For example, the outer diameter of the left induction heating coil 4a is about 1.5 to 2 times larger than that of the right induction heating coil 4b. Cook an oversized pan with a size of about 5 to 2 times. The remaining area of the induction heating coil housing chamber excluding the area occupied by the left induction heating coil 4a has the next outer diameter of the induction heating coil, here the right induction heating coil 4b. And cook the pan with a medium bottom diameter. In addition, an induction heating coil 4c having a smaller outer diameter is arranged in the approximate center of the area excluding the area occupied by the left and right induction heating coils 4a and 4b in the induction heating coil housing chamber 3, that is, at the center rear side. Then, the small pot whose bottom diameter matches the outer diameter of the induction heating coil 4c is heated.

As shown in FIG. 2, in order to make the main body 1 provided with the induction heating coil accommodating chamber 3 into a built-in type incorporated in a kitchen whose front surface is flush, the shape of the casing of the main body 1 is substantially a rectangular parallelepiped. Yes. Moreover, when the thing of large diameter like the left heating coil 4a is arrange | positioned near the left side corner of a main body, a vacant area arises in two places, the left front and back, and the center seeing from the cook. In order to make effective use of this empty area, a terminal block 5 is provided at this location, and the lead wire of the induction heating coil 4 is wired to an external substrate via the terminal block 5.
In addition, although demonstrated that the board | substrate is outside, the reason is as follows. The substrate is equipped with a drive circuit for driving the induction heating coil and a control unit such as a microcomputer, and includes many heating elements. Therefore, it is desirable to install it in an upstream air passage having a high cooling effect as much as possible. Therefore, the installation of the substrate in the induction heating coil housing chamber 3 that hits the downstream side of the air passage and has a heat generating object (such as a pan) nearby should be avoided.

As shown in FIG. 2, an air passage 6 for supplying cooling air for cooling the induction heating coil 4 is provided below each induction heating coil 4. FIG. 3 is a diagram showing the configuration of the air passage 6 shown in FIG. As shown in FIG. 3, a large number of jets 7 are formed on the top surface of the air passage 6. Thereby, the induction heating coil 4 can be cooled by the cooling air having passed through the air passage 6 being ejected upward from the ejection port 7.
In the terminal block 5, when the oversized pan induction heating coil 4 a is composed of a plurality of divided coils, the terminal block 5 and a substrate (not shown) provided outside the induction heating coil storage chamber are provided. The wiring is drawn into the air passage 6 and is bundled in the air passage 6 so as to pass through the air passage 6. For this purpose, a through hole 8 is provided in a portion of the air path 6 of the induction heating coil 4 near the terminal block 5, and the wiring from the terminal block 5 to the substrate outside the induction heating coil housing chamber is routed through the through hole 8. Pull into 6. Then, a plurality of wires are combined and fixed to the floor surface with a binding band, or if this is difficult, the plurality of wires are twisted together. The plurality of wires bundled in this way are bundled again by the binding band 9 at the outlet of the air passage 6. As a result, an empty area in the induction heating coil housing chamber can be secured, and wiring work becomes possible.

Moreover, since the wiring passing through the air path 6 is cooled by the cooling air, it is not affected by the heat generated from the placed pan. Therefore, it is possible to avoid the life of the wiring from being shortened due to repeated expansion and contraction due to a rapid change in temperature. In addition, if the air path 6 is made of a conductor such as metal, it is possible to shield the wiring from external noise such as thermal noise, and erroneous detection occurs even when a detector such as a current sensor is connected to the wiring. Very little to do.
In addition, you may make it make wiring follow the outer wall of the air path structure which comprises the air path 6. FIG. Thereby, although space saving cannot be achieved, wiring work becomes easier than storing the wiring in the air passage 6.

  FIG. 4 is a schematic diagram showing a state in which the wiring in FIG. 3 is fixed using a binding band. 4, the same reference numerals as those in FIG. 3 denote the same or corresponding parts. 3 is the same as FIG. 3 except that a binding band 9 is added to FIG. By fixing the wiring to the floor surface in the air passage 6 with the binding band 9, the resistance loss in the air passage 6 can be reduced. In addition, the fixed part of the wiring by the binding band 9 may use not only the floor surface but also the wall surface, and the obtained effect is the same.

  DESCRIPTION OF SYMBOLS 1 Main body, 3 induction heating coil storage chamber, 4, 4a-c induction heating coil, 5, 5a-e terminal block, 6 air channel, 7, jet outlet, 8 through-hole, 9 binding band, 10 induction heating cooker.

Claims (3)

A housing chamber that houses the induction heating coil group and the terminal block; and an air passage that is disposed below each induction heating coil constituting the induction heating coil group and through which cooling air that cools the induction heating coil passes. Prepare in the body,
The induction heating coil group includes a first induction heating coil and a second induction heating coil;
The outer diameter of the first induction heating coil is 1.5 to 2 times the outer diameter of the second induction heating coil, and is composed of a plurality of divided coils each having a plurality of lead wires,
The terminal block is disposed in the remaining empty area excluding the occupation area of the induction heating coil group in the accommodation chamber,
An induction heating cooker characterized in that wiring between the terminal block and the outside of the lead wire included in each divided coil of the second induction heating coil passes through the air passage.   The induction heating cooker according to claim 1, further comprising a binding band that bundles the wires in the cooling air passage.   The induction heating cooker according to claim 1 or 2, wherein the wiring is performed along an outer wall of an air passage structure constituting the air passage instead of passing through the air passage.

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