JPH0785731B2 - Double-sided heating cooker - Google Patents

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to a double-sided cooker,
More specifically, the upper grill intermittently rises up to a predetermined stroke as the heating time elapses, and is particularly suitable for savory baking of foods such as hamburgers and breads that expand with heating. Involved in

[0002]

2. Description of the Related Art A double-sided cooker has been conventionally used as a device for heating steaks, hamburgers and the like.
Further, as shown in FIG. 13, the conventional double-sided cooking device is such that the upper grill A and the lower grill B are pivotally connected at one end side to be openable and closable.

For this reason, the heating surfaces of the upper grill A and the lower grill B are parallel to each other at the position where both heating surfaces are in contact with each other, but when the upper grill A is rotated in the opening direction even a little, they are in a parallel state. Not be. And since this kind of equipment is used for heating food, food such as steak and hamburger is necessarily put between both grills.

Moreover, since the ingredients such as steak and hamburger have a certain degree of thickness, the upper grill A
The facing gap between the heating surface of the lower grill B and the heating surface of the lower grill B gradually increases as the distance from the pivotally connected portion C increases.

When heated in such a state, the baked food material is unsightly because the side of the pivotally connected portion C of both grills A and B is thin and spreads laterally, and the whole is not of uniform thickness. This is not a serious problem when eating at home, but it is a major problem to be solved when it is offered as a product to customers such as restaurants.

Further, since it is impossible to uniformly heat the food material, there is a problem in that the degree of baking can be uneven.

From these things, the present inventor previously devised the double-sided cooking device shown in FIGS. 8 to 12. The double-sided cooker includes a heater 10 in an outer case 102 having a downward opening.
3 and the upper grill 101 having a grill plate 104 attached to the opening, and the heater 1 in an outer box 106 having an upward opening.
07, a lower grill 105 having a grill plate 108 attached to its opening, a temperature control box 109 for mounting the lower grill 105 and a heating temperature adjustment control circuit, and a support mechanism 110 for the upper grill 101. It consists of

The support mechanism 110 is the upper grill 1
01 L-shaped support leg piece 111 fixed in parallel to the back side of 01
And an inverted T-shaped support leg piece 112 that is fixed in parallel to the back side of the temperature control box 109 and has the upper end 112a bent to the back side.
And is fixed to the side surface of the vertical portion of the supporting leg piece 111 at a required interval in the vertical direction, and is slidably fitted into a long hole 113 formed in the central portion of the vertical portion and the curved portion of the supporting leg piece 112. The two working pins 114 and 115 combined with each other, and the supporting leg piece 1
It is wound around the protrusion 116 provided at the upper end of the vertical portion of 12,
One end side is fixed to the supporting leg piece 112, the other end side is locked to the operating pin 114, and the balance spring 117 is composed of a winding spring biased to move the operating pin 114 upward, and the supporting leg 117. A claw piece 120 for holding a stopped state, which is attached to a horizontal portion of the piece 112 and elastically pressed by a coil spring 119 to a sawtooth-shaped uneven portion 118 provided on the lower end rear surface of the vertical portion of the support leg piece 111. It is a thing. The urging force of the balance spring 117 is set to be almost equal to or slightly smaller than the weight of the upper grill 101.

Thus, the double-sided heating cooker has the upper grill 1
01 can be contacted and separated in parallel with the lower grill 105 while the operating pin 114 is in the long hole 113 of the vertical portion of the support leg piece 112. Therefore, the grill plates 104 and 108 of the upper grill 101 and the lower grill 105 are
Are parallel to each other during this period, so that the problems of the conventional double-sided cooking device can be solved.

However, when the double-sided heating cooker was actually used, a new problem occurred. That is the top grill 1
This is because the position of 01 is constant from the beginning to the end of baking. That is, the upper grill 101 is attached to the grill plate 10
Balance spring 1 until 4 approaches the food surface
When the claw piece 120 is pushed down against the acting force of 17, the claw piece 120 enters the sawtooth-shaped uneven portion 118 of the supporting leg piece 111 and holds the stop position of the upper grill 101, but the upper grill 101 is from the beginning to the end of grilling. Always in that position for the time being.

For this reason, in the case of cooking a food that expands as it is heated, when it is attempted to expand, the upper surface side is pressed by the grill plate 104 of the upper grill 101, and it does not boil fluffy. If the ingredients that should be boiled fluffy are provided in a crushed state, it will of course look bad, and the ingredients that should be buffed fluffy will have a unique flavor due to the natural expansion effect of heating. Although it comes out, when the upper surface side is pressed down by the grill plate 104 of the upper grill 101, complete expansion is hindered, so that the original taste of the food is killed.

[0012]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, in which the upper grill is intermittently raised to a predetermined stroke as the heating time elapses, and the upper grill expands as it is heated. The purpose is to provide a double-sided heating cooker that can bake sushi ingredients.

The gist of the present invention lies in the following constitution. (1) In a double-sided cooker in which the heating surface of the upper grill is moved up and down while keeping the heating surface parallel to the heating surface of the lower grill, the upper grill is intermittently subjected to a predetermined stroke as the heating time elapses. A double-sided cooker characterized by being designed to rise up to. (2) A rectangular lower grill fixed to the base with a support, a rectangular upper grill having a flange on the upper outer periphery and a connecting portion projecting at the rear, and along the front-back direction of the upper and lower grills. A vertically movable up / down reversible motor that is fixed and operates intermittently at a predetermined timing for a predetermined time; and a screw shaft that is rotated by the vertically movable reversible motor.
A guide rod is slidably provided in the central portion of the length direction, and a moving rod for moving in the axial direction of the screw shaft by the rotation of the screw shaft and an intersection are pivotally connected and a rotation for opening / closing operation described later. The lower part of the supporting rod on the side fixed to the shaft is made bendable, and the upper end of the supporting rod on the side pivotally attached to the moving rod is pivotally attached to the connecting portion of the upper grill, while the upper end is The lower end of the supporting rod on the side supporting the side surface of the upper grill is fixed to a rotary shaft for opening and closing operation, which will be described later, and is arranged symmetrically on the side surfaces of the upper and lower grills.
A pair of character-shaped support rods, an open / close reversible motor fixed at the rear side of the upper and lower grills so as to be orthogonal to the up / down reversible motor, and operated at a predetermined timing;
A double-sided cooker comprising an opening / closing rotary shaft that is rotated by transmitting the rotational force of the open / close reversible motor.

[0014]

Next, the operation of the present invention will be described. When lowering the upper grill, the reversible motor for raising and lowering is operated to rotate the screw shaft connected to the rotating shaft. As a result, a threaded hole for the threaded shaft is provided, and the movable rod in which the threaded shaft is screwed into the threaded hole moves horizontally in a direction in which the interval between the lower portions of the pair of X-shaped support rods described later is increased.

When the operating piece fixed to the moving rod comes into contact with the limit switch attached to the end of the moving direction, the reversible motor for raising / lowering operation stops its operation. As a result, the upper grill is held in parallel with the lower grill with a predetermined gap. The gap between the upper grill and the lower grill can be adjusted by changing the position at which the limit switch is attached, but it is usually set in advance according to the food to be baked using the limit switch. It should be noted that, generally, the thickness is set to be equal to or slightly larger than the thickness of the food material.

Next, the heaters of the upper and lower grills are operated to start heating. Further, at this time, the heating auxiliary body such as an iron plate provided on the outer periphery of the upper grill descends so as to surround the heating surface of the upper grill, and therefore, the heat from the heater is not leaked to the outside and can be efficiently heated. . Moreover, if the heating surfaces of the upper grill and the lower grill are made different in temperature, for example, the heating surface of the upper grill is 220 ° C. and the heating surface of the lower grill is 150 ° C., the upper surface of the food can be appropriately charred. This makes it possible to improve the appearance of the baked product.

Next, after a lapse of a predetermined time (time in seconds) after the operation of the heater is started, the reversible motor for raising and lowering is rotated in the opposite direction to the above. As a result, the space between the lower portions of the pair of X-shaped support rods is narrowed, and accordingly, the upper portions of the pair of support rods are lifted while maintaining the same height. Therefore, the upper grill supported by the upper portions of the pair of supporting rods can be lifted while keeping the parallel state with the lower grill.

In order to raise the upper grill, the reversible motor for raising and lowering is operated for a predetermined time (time in seconds), then stopped temporarily, and then stopped for a predetermined time (time in seconds), and then again. The operation is started to intermittently raise a predetermined stroke. For example, the reversible motor for lifting / lowering operation is operated for 0.25 seconds every 5 seconds so that the upper grille is moved up to a stroke of 1 mm at intervals of 5 seconds and intermittently raised for 10 strokes (10 mm). It is a thing. Moreover, the length of the stroke is appropriately set according to the food material.

As a result, when the foodstuffs gradually expand due to heating, the upper grill can be raised to match the expansion. Therefore, the heating surface of the upper grill does not crush the upper surface of the food material, so that the food can be baked in full. In addition, it does not kill the peculiar taste of food.

When the upper grill moves up to a predetermined height, the limit switch attached to the starting end of the moving rod in the moving direction comes into contact with the operating piece fixed to the moving rod, and the reversible motor for raising and lowering operates. To stop.

Next, the reversible motor for opening / closing operation starts to operate, and the rotating shaft for opening / closing operation is rotated via the pinion fixed to the rotating shaft and the sector gear meshing with the pinion. With the rotation of the open / close operation rotary shaft, one of the pair of support rods having a lower end fixed to the end of the open / close operation rotary shaft is positioned below the intersection of the support rods. Bend to the front side.

As a result, the distance between the rotating shaft for opening / closing operation and the upper end of the bent support rod is shortened by the amount of the bend, and the pivotal connection position of both support rods does not change. The rod swings up so that its upper end is located above the upper end of the other supporting rod,
The other support rod also tilts. As a result, the upper grill supported by the upper ends of the pair of support rods is rotated in the opening direction while retracting.

A roller is attached to the upper end of one of the supporting rods, and the supporting rails provided on the flanges of the left and right side portions of the upper grill are supported while being placed on the roller, so that the heating is performed during heating. It is possible to open and close the upper grill.

[0024]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a right side view of a state in which an upper grill of one embodiment of the present invention is lifted, FIG. 2 is a right side view of a state in which the upper grill is open, and FIG. 3 is a sectional view taken along line I-I in FIG. In Figure 1
II-II sectional view, FIG. 5 is a plan view of the reversible motor for lifting operation and the screw shaft portion, FIG. 6 is a partially enlarged sectional view of the upper grill and the lower grill with the upper grill lowered, and FIG. 7 is the upper grill. It is a schematic explanatory view showing the movement of.

In the figure, 1 is a base. The columns 2, 2 ... Stand on the base 1. Reference numeral 3 denotes a rectangular lower grille supported by the columns 2, 2 ..., which is slightly larger than the upper grille described later and has a heater 4 built therein. Note that the heat insulating material and other members are omitted for ease of understanding. Further, the lower grill 3 is provided with a drop passage 3a for oil, meat juice or the like on a part of the heating surface 3 '.

Reference numeral 5 denotes a rectangular upper grille having a flange 5a, which is supported by a pair of supporting rods described later, and has a heater 6 built therein. The temperature of the heating surface 5'of the upper grill 5 is set to be slightly higher than that of the lower grill 3 '. Further, an iron plate 7 as a heating assisting body is attached to the side surface of the upper grill 5 so as to surround the heating surface 5'of the upper grill 5 so as to be vertically movable. In the present embodiment, the iron plate 7 is provided with a plurality of longitudinal elongated holes 7a.
A pin 8 fixed to the side surface of the upper grill 5 is slidably fitted to a and is vertically movable. Further, although the iron plate is used as the heating auxiliary body in the present embodiment, a bellows-shaped elastic member may be used instead.

Support rails 9, 9 on the lower surface of which rolls of a support rod, which will be described later, roll, are attached to the left and right side flanges of the upper grill 5. Further, a connecting base 10 for pivotally attaching the upper end of a supporting rod, which will be described later, is fixed to the flange on the rear side portion of the upper grill 5.

Reference numeral 11 denotes a reversible motor for raising and lowering, which is arranged on the base 1 along the front-rear direction of the lower grill 3. Further, the reversible motor 11 for raising and lowering is adapted to rotate at a predetermined timing via a limit switch and a timer (not shown) described later. Reference numeral 12 is a screw shaft connected to the rotary shaft of the reversible motor 11 for lifting and lowering, and is rotatably supported by bearing plates 13 and 13.

Reference numeral 14 denotes a moving rod provided with a screw hole (not shown) for screwing the screw shaft 12, and the screw shaft 14 is screwed into the screw hole. Is to move in the axial direction of the screw shaft. Further, the moving rod 14 is pivotally connected at its both ends to a lower end portion on one side of a pair of supporting rods described later. Further, an operating piece 15 for opening and closing a limit switch described later is fixed to the moving rod 14.

Reference numeral 16 denotes a guide shaft slidably provided in the center of the movable rod 14 in the longitudinal direction, and both ends thereof are supported by bearing plates (not shown). Reference numeral 17 denotes a balance spring formed of a coil spring provided on the guide shaft 16, which reduces the force required to open and close the upper grill 5 and enables the use of a small motor.

Reference numerals 18 and 19 are limit switches, which are arranged on the moving path of the operating piece 15 fixed to the moving rod 14. In addition, these limit switches 18, 19
The position of is appropriately determined according to the thickness of the food to be baked and the like.

Reference numeral 20 denotes a reversible motor for opening / closing operation which is disposed on the rear side of the lower grill 3 on the base 1 in a direction orthogonal to the vertically movable reversible motor 11. The reversible motor 20 for opening and closing operates the limit switch 1
It is adapted to be rotated at a predetermined timing via 8 or the like.

Reference numeral 21 is a pinion fixed to the rotary shaft 20a of the reversible motor 20 for opening / closing operation. Reference numeral 22 is a fan gear that meshes with the pinion 21. Reference numeral 23 is a rotary shaft for opening and closing operation, in which the fan-shaped gear 22 is fixed to the central portion in the lengthwise direction, and the both end portions are rotatably supported by bearing plates 24, 24.

Numerals 25 and 26 are a pair of X-shaped support rods whose central intersections are connected by a pivot 27 and are symmetrically arranged on the left and right side surfaces of the lower grill 3 and the upper grill 5.
Further, one support rod 26 is divided into two below the intersection so that the lower side can be bent, and the overlapping portion is pivotally connected by a pivot 28.

The one end of the support rod 25 is pivotally attached to the end of the movable rod 14 by means of a pivot 29, and the top end thereof is pivotally attached to the connecting base 10 by means of a pivot 30. is doing. The other support rod 26 has its lower end fixed to the end of the opening / closing operation rotary shaft 23, and has an upper end rotatably supporting a roller 31.

Although not shown in the drawings for convenience of understanding, the entire cooking device is covered with a cover, and the operations of the reversible motor 11 for lifting and lowering and the reversible motor 20 for opening and closing are controlled. The circuit is incorporated in a control box (not shown).

[0037]

The present invention has the constitution and operation as described above.
The upper grill can be intermittently raised for a predetermined stroke as the heating time elapses. Therefore, when cooking food that expands when heated,
The upper grill can be raised so as to match the expansion of the food, and since the heating surface of the upper grill does not crush the upper surface of the food, it is possible to bake fluffy. Moreover, it does not kill the peculiar taste of the food.

Although the present invention is particularly suitable for cooking foodstuffs that expand by heating in this way, it can be used for cooking foodstuffs that do not expand by heating. In that case, the heating may be performed by the above-described operation, but the reversible motor for lifting operation is not operated until the heating is completed, and the upper grill is raised at the same time as the heating is completed for a predetermined time. Then, it may be operated so as to open. At this time, the reversible open / close motor is also operated.

If the heating surface of the upper grill is surrounded by a heating auxiliary body such as an iron plate provided on the outer periphery of the upper grill when the lower grill descends, the heat can be efficiently heated without leaking to the outside. You can Furthermore, if the temperatures of the heating surfaces of the upper grill and the lower grill are made different so that the temperature of the heating surface of the upper grill is slightly higher than the temperature of the heating surface of the lower grill, an appropriate degree of charring on the upper surface of the food is achieved. You can put it on and improve the appearance of the baked product.

[Brief description of drawings]

FIG. 1 is a right side view of a state in which an upper grill of one embodiment of the present invention is raised.

FIG. 2 is a right side view showing a state in which an upper grill is opened.

FIG. 3 is a sectional view taken along line I-I in FIG.

FIG. 4 is a sectional view taken along line II-II in FIG.

FIG. 5 is a plan view of a reversible motor for lifting and lowering and a screw shaft portion.

FIG. 6 is a partial enlarged cross-sectional view of an upper grill and a lower grill in a state where the upper grill is lowered.

FIG. 7 is a schematic explanatory view showing the movement of the upper grill.

FIG. 8 is a perspective view of a double-sided cooking device previously devised by the present inventor.

FIG. 9 is an enlarged view of a part of the supporting leg piece.

FIG. 10 is an explanatory diagram of the opening operation of the upper grill, showing a state before opening.

FIG. 11 is an explanatory diagram of an opening operation of the upper grill, showing a state in which the upper grill starts to open.

FIG. 12 is an explanatory view of the opening operation of the upper grill, showing a substantially completely opened state.

FIG. 13 is a schematic explanatory view showing the movement of the upper grill of a conventional double-sided cooking device.

[Explanation of symbols]

 1 Base 2 Support 3 Lower Grill 4 Heater 5 Upper Grill 6 Heater 7 Iron Plate as a Heat Auxiliary Body 9 Support Rail 10 Connecting Base 11 Reversible Motor for Elevating Operation 12 Screw Shaft 14 Moving Rod 15 Actuating Piece 16 Guide Axis 17 Balance Spring 18, 19 Limit switch 20 Reversible motor for opening / closing operation 21 Pinion 22 Fan gear 23 Rotating shaft for opening / closing operation 25, 26 A pair of X-shaped supporting rods 27, 28 Axis 31 Roller

Claims (4)

[Claims] 1. A double-sided cooker in which an upper grill is moved up and down with its heating surface kept parallel to the heating surface of the lower grill, and the upper grill is directed to a predetermined stroke as the heating time elapses. A double-sided cooker characterized by being designed to rise intermittently. 2. A rectangular lower grill fixed on a base with a supporting column, a rectangular upper grill having a flange on the outer periphery of the upper portion and projecting a connecting portion at the rear, and the front and rear grills in the front-rear direction. And a reversible motor for up-and-down operation fixed along a predetermined timing for intermittent operation for a predetermined time, a screw shaft for rotating by the up-and-down operation reversible motor, and a central portion in the longitudinal direction. A guide rod is slidably provided on the shaft, and a moving rod for moving the screw shaft in the axial direction by the rotation of the screw shaft is connected to the moving shaft on the side for pivotally connecting the intersection and for fixing the opening / closing operation rotary shaft. The lower part of the supporting rod is bendable, and the upper end of the supporting rod on the side where the lower end is pivotally attached to the moving rod is pivotally attached to the connecting portion of the upper grill, while the upper end supports the side surface of the upper grill. Secure the lower end of the support rod on the A pair of X-shaped supporting rods symmetrically arranged on the side surfaces of the upper and lower grills are fixed to the rear side of the upper and lower grills so as to be orthogonal to the reversible motor for raising and lowering, and at a predetermined timing. A double-sided cooker comprising an open / close reversible motor that operates in accordance with 1. and an open / close rotary shaft that rotates by transmitting the rotational force of the open / close reversible motor. 3. The double-sided cooker according to claim 1, wherein a heating auxiliary body is provided on the outer periphery of the upper grill so as to surround the heating surface thereof. 4. The double-sided cooking device according to claim 1, wherein the temperature of the heating surface of the upper grill is set slightly higher than the temperature of the heating surface of the lower grill.