JP2011204454A - Heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker capable of controlling interference between a ventilation cover and a top plate, in a structure in which the end parts of the ventilation covers are abutted at the upper part of openings of an air-intake or an exhaust port.SOLUTION: The heating cooker is provided with a body case 10 of a box shape of which the upper part is open; a top plate part 20 which covers the upper opening of the body case 10 and can mount a heating object, a heating coil unit 30 which is installed at the lower part of the top plate part 20; a center ventilation port 23b, which is installed in the top plate part 20 and exhausts cooling air for cooling the components in the body case; a plurality of ventilation covers 25 which cover the center ventilation port 23b; a plurality of ventilation covers 25; which are arranged in a row abutting the end parts and cover the center ventilation port 23b; and a support member 61 and a support member 62 which are installed at the positions, facing interposed at the center ventilation port 23b and is able to mount the end part of the ventilation covers 25.

Description

  The present invention relates to a heating cooker provided with an opening for sucking and exhausting air for cooling components in the main body of the heating cooker, and a cover for covering the opening.

  Conventionally, “cooking the upper part of the intake port and the exhaust port with a removable ventilation cover having a ventilation hole”, “heating the ventilation cover on a positioning member made of a vibration-proof material provided on a top plate” A device has been proposed (see, for example, Patent Document 1).

JP 2009-301990 A (2nd page, 5th page, FIG. 3)

  The heating cooker described in Patent Document 1 places the ventilation cover on a positioning member provided on the top frame (plate frame) of the top plate, so that the upper frame around the intake and exhaust ports and the ventilation cover Generation of vibration sound due to interference is prevented. However, it is based on the premise that one opening that is an intake port or an exhaust port is covered with one ventilation cover, and a plurality of covers are arranged side by side so that the ends thereof are abutted with each other. The covering configuration was not considered.

  When one opening is covered with a plurality of ventilation covers, the ends of the ventilation covers are abutted above the opening. Thus, in the configuration in which the end portions of the ventilation cover face each other above the opening, a technique capable of suppressing interference between the ventilation cover and the top plate has been desired.

  The present invention has been made in order to solve the above-described problems, and is a heating cooker that covers an opening of an intake port or an exhaust port while a plurality of ventilation covers are arranged side by side, and includes a ventilation cover and a ceiling. The present invention provides a cooking device capable of suppressing interference with a plate.

  The cooking device according to the present invention includes a box-shaped main body case having an upper opening, a top plate portion that covers the upper opening of the main body case, and on which an object to be heated can be placed, and is disposed below the top plate portion. An installed heating means; an opening provided in the top plate portion for sucking or discharging cooling air for cooling components in the main body case; a plurality of ventilation covers covering the opening; and an end portion A plurality of ventilation covers that are arranged to face each other and cover the opening, and a first holding member and a second holding member that are provided at positions facing each other across the opening and on which the end of the ventilation cover can be placed And a holding member.

  The cooking device according to the present invention has a configuration in which the ends of the plurality of ventilation covers are butted and arranged to cover the opening for intake and exhaust, and the end of the ventilation cover on the side to be abutted can be placed. The 1 holding member and the 2nd holding member were provided in the position which opposes on both sides of the said opening part. Since the position of the ventilation cover can be regulated by placing the end portion of the ventilation cover to be abutted on the first holding member and the second holding member, the ventilation cover and the top plate are separated by the vibration of the heating cooker. Generation of interference sound caused by collision can be suppressed.

1 is a perspective view of a heating cooker according to Embodiment 1. FIG. It is a perspective view which shows the state which removed the ventilation | gas_flowing cover of the heating cooker which concerns on Embodiment 1. FIG. It is a perspective view which decomposes | disassembles the part which removed the top plate part of the heating cooker which concerns on Embodiment 1, and shows an internal structure. FIG. 3 is a perspective view for explaining a holding member of the ventilation cover according to the first embodiment. It is sectional drawing which shows the state which mounted the ventilation cover in the AA line of FIG. 6 is a perspective view for explaining a holding member of a ventilation cover according to Embodiment 2. FIG.

Embodiment 1 FIG.
In the first embodiment, a so-called built-in heating cooker will be described as an example. FIG. 1 is a perspective view of the heating cooker according to the first embodiment, FIG. 2 is a perspective view showing a state where the ventilation cover of the heating cooker is removed, and FIG. 3 is a part of the heating cooker with the top plate 20 removed. It is a perspective view which decomposes | disassembles and shows an internal structure.

[Overall configuration of cooking device]
With reference to FIGS. 1-3, the whole structure of the heating cooker which concerns on this Embodiment 1 is demonstrated.
The heating cooker 100 heats an object to be heated such as a substantially rectangular parallelepiped main body case 10 having an upper surface opened, a top plate portion 20 covering the upper surface opening of the main body case 10, and a pan placed on the top plate portion 20. A heating coil unit 30, an operation display unit 40 that receives an operation by a user and displays a heating condition and an operation state, and a control circuit that receives a signal from the operation display unit 40 and controls a heating operation by the heating coil unit 30. And a control board 13 provided.

  The top plate 20 is composed of two large parts, an upper frame 21 and a top plate 22. The upper frame 21 is formed in a frame shape by a metal plate such as a nonmagnetic stainless steel plate or an aluminum plate, and has a size that closes the upper surface opening of the main body case 10.

  The top plate 22 is placed over the main body case 10 so as to cover a large opening provided in the center of the frame-shaped upper frame 21 without a gap. The top plate 22 is entirely made of a translucent material that transmits infrared rays, such as heat-resistant tempered glass or crystallized glass, and is formed in a rectangle or a square according to the shape of the opening of the upper frame 21. Furthermore, the front, rear, left and right side edges of the top plate 22 are fixed in a watertight state with rubber packing or a sealing material (not shown) interposed between the top plate 21 and the opening of the upper frame 21. As described above, the gap formed at the facing portion between the upper frame 21 and the top plate 22 is closed by the rubber packing or the sealing material (not shown). Water droplets do not enter inside.

  The upper frame 21 is formed with a left vent 23a, a central vent 23b, and a right vent 23c (hereinafter may be collectively referred to as vent 23). The vent hole 23 is formed by punching simultaneously with a press machine when the upper frame 21 is formed.

  Two ventilation covers 25 are detachably mounted on the left vent hole 23a, the central vent hole 23b, and the right vent hole 23c so as to cover all three upper portions. The ventilation cover 25 is made of metal, has a substantially flat plate shape, has a substantially rectangular shape in plan view, and a plurality of communication holes 25b are formed over the entire upper surface 25a. In the first embodiment, the communication hole 25b is formed by a plurality of slits parallel to the long side of the ventilation cover 25. For example, a small hole for the communication hole may be formed by pressing, You may comprise the upper surface 25a of the cover 25 with a metal-mesh. In any case, the communication hole 25b only needs to prevent the user's finger or foreign matter from entering the ventilation hole 23 from above.

The two ventilation covers 25 are arranged in the longitudinal direction so that the end portions 25c located on the center side of the heating cooker 100 face each other. The position where the end portions of the two ventilation covers 25 are abutted is above the opening of the central vent 23b. Here, “matching” does not require that the end portions 25c are in close contact with each other, but they are close enough to prevent the user's finger or foreign matter from entering the opening of the vent hole 23. State.
In addition, an outer peripheral edge 25d that is bent downward is formed on the outer periphery of the upper surface 25a excluding the end portion 25c of the ventilation cover 25. When the ventilation cover 25 is attached to the upper frame 21, the outer peripheral edge 25 d comes into contact with the outer peripheral sides of holding members 61, 62, and 63 (described later) to position the ventilation cover 25.

Inside the main body case 10, a heating coil 31 for inductively heating an object to be heated N such as a metal pan placed on the top plate 22, and a coil base 32 on which the heating coil 31 is placed. A heating coil unit 30 is mounted.
The heating coil 31 is an induction heating source disposed in close proximity with a minute gap between the lower surface of the top plate 22. The heating coil 31 is spirally bundled with about 30 thin wires of about 0.1 mm, and this bundle (hereinafter referred to as a collective wire) is wound while twisting one or a plurality of wires so that the outer shape becomes circular. Finally, it is formed into a disk shape. When a high frequency current is generated in the heating coil 31, an eddy current is generated in a heated object such as a pan placed on the top plate 22 by an electromagnetic induction effect caused by the high frequency current, and is generated in the heated object N. The eddy current becomes Joule heat and the heated object generates heat.

  The coil base 32 is a member for holding the heating coil 31. The coil base 32 is preferably provided with a ferrite for preventing the lines of magnetic force generated from the heating coil 31 from flowing downward, and a temperature sensor for detecting the temperature of the object to be heated.

  In FIG. 3, one heating coil unit 30 is shown, but in the first embodiment, two heating coil units having the same configuration are arranged on the left and right sides to provide two heating ports. In addition to such an induction heating source, for example, a radiant electric heating source called a radiant heater for heating with electric radiant heat may be provided.

Inside the main body case 10, a box-shaped grill heating chamber 11 and a cooling chamber 12 provided on the left side surface and the right side surface in the front-rear direction are defined.
The front opening of the grill heating chamber 11 is covered with a door 11a provided on the front side of the main body case 10 so as to be openable and closable. It is held in the grill heating chamber 11 by a support mechanism (not shown) such as a roller. The grill heating chamber 11 is provided with a radiant electric heating source (not shown) such as a sheathed heater. An exhaust duct 18 is provided at the rear portion of the grill heating chamber 11, and the exhaust duct 18 can exhaust the air in the grill heating chamber 11 to the outside of the heating cooker 100. When the top plate 20 is placed on the main body case 10, the exhaust port 18 a of the exhaust duct 18 is positioned below the central ventilation port 23 b provided in the upper frame 21.

In the cooling chamber 12, a component case 14 that accommodates components such as a control board 13 that performs overall control of the heating cooker 100, and a fan case 15 are accommodated.
The fan case 15 is provided with a fan 16 such as a sirocco fan, for example, and the air sucked from the suction port 15a opened at the top of the fan case 15 by the drive of the fan 16 blows out as cooling air from the blower outlet 15b. It has come to be.

  The component case 14 includes an inlet 14a for introducing the cooling air blown from the blower outlet 15b of the fan case 15 and an outlet 14b, 14c for blowing the cooling air introduced into the component case 14. I have. When the top plate portion 20 is placed on the main body case 10, the introduction port 14 a of the component case 14 is located below the left ventilation port 23 a or the right ventilation port 23 c provided in the upper frame 21.

  A cooling duct 17 made of plastic or the like is provided above the component case 14 and below the heating coil unit 30. The cooling duct 17 is formed with a plurality of jet outlets 17a penetrating the upper surface.

Next, the central ventilation port 23b, the holding member of the ventilation cover 25, and the mounting structure of the ventilation cover 25 will be described.
FIG. 4 is a perspective view for explaining the holding member of the ventilation cover 25 according to the first embodiment, and shows only the main part. FIG. 5 is a cross-sectional view of the state in which the ventilation cover 25 is placed along the line AA in FIG.
Hereinafter, with reference to FIGS. 2, 4, and 5, configurations of the central vent 23 b, the ventilation cover 25, and the holding members 61, 62, and 63 according to the first embodiment will be described.

The holding members 61, 62, and 63 are made of a vibration-proof material such as rubber, for example, and are members for positioning and holding the ventilation cover 25 placed above the ventilation port 23.
The holding member 61 is attached to the upper frame 21 and corresponds to the first holding member of the present invention. The holding member 61 is disposed at a substantially central position in the left-right direction of the central vent 23b and on the back side of the central vent 23b.
The holding member 62 is attached to a mounting base 26 provided to extend to the periphery of the opening of the central vent 23b, and corresponds to a second holding member of the present invention. The holding member 61 and the holding member 62 are attached at positions facing each other across the opening of the central vent 23b.
The holding member 63 is mounted on the upper frame 21 on the left side of the left vent 23a and on the right side of the right vent 23c.

  As shown in FIG. 5, the mounting base 26 includes an extension portion 26a formed by extending a part of a peripheral edge located substantially at the center in the left-right direction of the central vent 23b in a substantially horizontal direction, and an extension of the extension portion 26a. And a bent portion 26b formed by bending the front end in the direction downward. The bent portion 26b is bent at an angle of about a right angle or less, and has a slightly rounded shape when viewed from a vertical section. Even when the user puts his / her hand into the central vent 23b with the ventilation cover 25 removed, the bent portion 26b protects the user's hand from the edge of the sheet metal of the central vent 23b. It has become.

  The mounting base 26 is provided to add a space for attaching the holding member 62 to the upper frame 21. For example, a space for attaching the holding member 61 and the holding member 62 may not be provided in the flat portion of the upper frame 21 due to the size restrictions of the upper frame 21 and the central vent 23b. Therefore, in the first embodiment, a mounting base 26 extending toward the inside of the opening of the central vent 23 b is provided, and the holding member 62 is attached to the mounting base 26. In this way, it is not necessary to provide a space for placing the holding member 62 on the front side of the central vent 23b (between the central vent 23b and the top plate 22), and the area of the upper frame 21 is reduced. Can be small. In the first embodiment, the example in which the mounting base 26 is provided on the front side of the central vent 23b has been described. However, the mounting base may be provided on the back side of the central vent 23b.

  Furthermore, the holding member 62 according to the first embodiment includes a holding portion 62a whose upper surface is substantially horizontal, and a skirt portion 62b that is continuous with the holding portion 62a and extends downward (FIG. 5). reference). The holding member 62 is formed in a substantially bowl shape in the cross section shown in FIG. The lower end of the skirt portion 62b is located below the lower end of the bent portion 26b of the mounting base 26. The skirt portion 62 b covers the outer peripheral side of the bent portion 26 b of the mounting base 26. By providing such a skirt portion 62b, the user's hand touches the bent portion 26b of the mounting base 26 even when the user puts his hand into the central vent 23b with the ventilation cover 25 removed. There is nothing. For this reason, a user's hand can be further protected from the edge of the sheet metal of the central vent 23b.

  The holding members 61, 62, and 63 configured in this manner hold the four corners of each of the two ventilation covers 25 that are rectangular in plan view, and the position of the ventilation cover 25 is regulated.

[Operation of cooking device]
Next, the operation | movement outline | summary of the heating cooker 100 comprised as mentioned above is demonstrated. When the main power button provided on the operation display unit 40 is operated to turn on the power and the heating conditions such as the heating power and the heating time are set, the voltage corresponding to the set heating power is applied to heat the heating target. A high frequency current flows through the coil 31. The object to be heated such as a pan placed on the top plate 22 is heated by the high-frequency magnetic flux generated thereby.

Next, with reference to FIGS. 1-3, the intake / exhaust operation | movement of the heating cooker 100 is demonstrated.
When energization to the heating coil 31 or the like is started, the fan 16 is driven by a control circuit mounted on the control board 13. When the fan 16 is driven, air outside the heating cooker 100 is sucked into the fan case 15 from the suction port 15a through the left vent 23a or the right vent 23c covered with the ventilation cover 25. The The air sucked into the fan case 15 is blown out as cooling air from the outlet 15 b of the fan case 15, and this cooling air advances from the inlet 14 a of the component case 14 into the component case 14. The cooling air that has entered the component case 14 is blown out from the outlets 14 b and 14 c while cooling the control board 13 accommodated in the component case 14. Cooling air blown out from the outlets 14b and 14c is jetted upward through the jet outlet 17a provided in the cooling duct 17 and collides with the lower surface of the heating coil 31 directly above to effectively heat the heating coil 31. Cool down. The cooling air that has cooled the heating coil 31 flows through the space between the heating coil 31 and the top plate portion 20 toward the back side (the back side of the heating cooker 100), and is discharged through the central vent 23b. . Further, when heating is performed by a heating source in the grill heating chamber 11, hot air is generated inside the grill heating chamber 11, so a blower (not shown) provided in the exhaust duct 18 is operated. Then, the hot air in the grill heating chamber 11 is discharged from the exhaust port 18 a of the exhaust duct 18. The exhaust from the exhaust port 18a is blown out of the heating cooker 100 through the central vent 23b.

Due to such a heating operation, the cooking device 100 is vibrated. Further, due to the exhaust from the central vent 23b, vibration is also generated in the upper frame 21 of the top panel 20 where the central vent 23b is formed.
However, according to the first embodiment, the holding member 61 and the holding member 62 are provided at positions facing each other across the opening of the central ventilation port 23b for discharging the cooling air, and two pieces are provided on the holding members 61 and 62. The end portion 25c of the ventilation cover 25 was placed. For this reason, even if vibration occurs due to the exhaust from the central vent 23b, interference with the upper frame 21 in the vicinity of the end 25c of the ventilation cover 25 can be reduced.

Further, since the four corners of the two ventilation covers 25 are held by the holding members 61, 62, and 63, respectively, interference between the ventilation cover 25 and the upper frame 21 and generation of interference sound can be further reduced.
For example, in the case where a substantially rectangular ventilation cover in plan view is configured using sheet metal as in the ventilation cover 25 of the first embodiment, if the ventilation cover is elongated in the longitudinal direction, the twist generated on the diagonal line of the ventilation cover is large. Become. If the torsion of the ventilation cover increases, the ventilation cover will rattle when placed on the top frame 21 of the top plate 20. For this reason, it is desirable that the length of the ventilation cover in the longitudinal direction is such that the above-described twist is not generated as much as possible. On the other hand, for example, when there are a plurality of openings for intake or exhaust, if a ventilation cover corresponding to each opening is provided individually, the number of parts increases.
From this point of view, it is effective to provide two ventilation covers 25 as in the first embodiment and to cover the whole vent hole 23 with the ventilation covers 25. As a result of covering the entire ventilation port 23 with the two ventilation covers 25, the position where the end portions of the two ventilation covers 25 are abutted is located above the central ventilation port 23b. The end portions 25c of the ventilation cover 25 can be held by the holding members 61 and 62, and interference between the ventilation cover 25 and the upper frame 21 can be reduced.

  Furthermore, since the mounting base 26 extending toward the inside of the opening of the central ventilation opening 23b is provided and the holding member 62 is attached to the mounting base 26, there is a space for attaching the holding member 62 to the outer peripheral side of the central ventilation opening 23b. It becomes unnecessary. For this reason, the area of the upper frame 21 can be made small, and it contributes to size reduction of the heating cooker 100 whole.

  The holding member 62 includes a holding portion 62 a whose upper surface is substantially horizontal, and a skirt portion 62 b that is formed continuously with the holding portion 62 a and extends downward. The skirt portion 62 b is a bent portion of the mounting base 26. 26b was covered. For this reason, even if the user puts his / her hand into the central vent 23 b with the ventilation cover 25 removed, the user's hand does not touch the bent portion 26 b of the mounting base 26. For this reason, a user's hand can be protected from the edge of the sheet metal of the central vent 23b.

Embodiment 2. FIG.
FIG. 6 is a perspective view for explaining a holding member of the ventilation cover according to the second embodiment. In FIG. 6, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals, and the second embodiment will be described focusing on the differences from the first embodiment.

The holding part 162a of the holding member 162 corresponds to the holding part 62a of the first embodiment. Although not shown in FIG. 6, the holding member 162 includes a skirt portion similar to the skirt portion 62 b of the first embodiment.
And the holding member 162 is provided with the rib 162c which stands up upwards in the center of the left-right direction of the upper surface of the holding part 162a. When the two ventilation covers 25 are arranged side by side and attached to the ventilation opening 23, the end portions 25c of the two ventilation covers 25 are respectively arranged on the left side or the right side of the rib 162c. That is, the end portions 25c of the two ventilation covers 25 are abutted with each other with the rib 162c interposed therebetween.

  Thus, even when vibration is generated in the heating cooker 100 by the heating operation or the intake / exhaust operation, the holding member 162 having the rib 162c collides with the end portions 25c of the two ventilation covers 25 to generate a vibration sound. Can be prevented. Further, since collision between the end portions 25c of the ventilation cover 25 can be avoided, damage to the end portion 25c of the ventilation cover 25 due to the collision can also be avoided.

  In the above description, the entire three openings (the left vent 23a, the central vent 23b, and the right vent 23c) are covered with the two ventilation covers 25, and 2 above the central vent 23b. The example in which the end portions 25c of the single ventilation cover 25 are abutted with each other has been described, but the number of openings and the number of ventilation covers are not limited.

  DESCRIPTION OF SYMBOLS 10 Main body case, 11 Grill heating chamber, 11a Door, 12 Cooling chamber, 13 Control board, 14 Component case, 14a Inlet, 14b Outlet, 15 Fan case, 15a Inlet, 15b Outlet, 16 Fan, 17 Cooling duct , 17a Spout, 18 Exhaust duct, 18a Exhaust, 20 Top plate, 21 Top frame, 22 Top plate, 23 Ventilation vent, 23a Left vent, 23b Central vent, 23c Right vent, 25 Ventilation cover, 25a Upper surface, 25b communication hole, 25c end, 25d outer peripheral edge, 26 mounting base, 26a extension, 26b bent part, 30 heating coil unit, 31 heating coil, 32 coil base, 40 operation display part, 61 holding member, 62 Holding member, 62a holding part, 62b skirt part, 63 holding member, 100 heating cooker, 162 holding member, 162a holding part, 162c rib.

Claims (4)

A box-shaped body case with an open top;
Covering the upper opening of the main body case, a top plate part on which an object to be heated can be placed,
Heating means disposed below the top plate,
An opening provided in the top plate for sucking or discharging cooling air for cooling the components in the main body case;
A plurality of ventilation covers that are arranged with their ends butted to cover the opening;
A heating cooker comprising a first holding member and a second holding member that are provided at positions facing each other across the opening and on which the end of the ventilation cover can be placed. The cooking device according to claim 1, wherein a part of the periphery of the opening is extended toward the inside of the opening surface to provide a mounting base, and the second holding member is placed on the mounting base. The mounting base includes an extension that extends a part of the peripheral edge of the opening toward the inside of the opening surface, and a bent portion that is bent downward and connected to the extension.
The cooking device according to claim 2, wherein the second holding member includes a skirt portion that covers at least the bent portion of the mounting base. The rib located between the edge part of the said ventilation | gas_flowing cover to face | match is provided in the upper surface of at least one of the said 1st holding member and the 2nd holding member. The cooking device according to any one of the above.

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