JPH0672533U - Food cooker - Google Patents

Abstract

(57) [Summary] [Purpose] To improve the durability of a cooker that browns food and reduce its size and weight. A conveyor 1, a plurality of tube heaters 3 each having a thin tube formed in a cylindrical shape, and a pair of shafts 4 having a small thermal conductivity and fixed at both ends of the plurality of tube heaters 3. The pair of bearings 7 that rotatably supports the pair of shafts 4 provided on the conveyor 1 and the central shaft 6 having a small thermal conductivity that is fixed through the center of the shaft 4 have a small thermal conductivity. The electromagnetic induction secondary coil 8 is provided at one end, the electromagnetic induction primary coil 10 is fixedly arranged at a position facing the electromagnetic induction secondary coil 8, and the inverter power supply 11 is connected to the electromagnetic induction primary coil 10. By passing an electric current, the tube heater 3 is heated by the eddy current induced in the electromagnetic induction secondary coil 8, and the outer peripheral speed of the rotating tube heater 3 is adjusted to the speed of the food 2 flowing on the conveyor 1,
A plurality of tube heaters 3 were brought into contact with food and browned.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention mainly relates to an improvement of a food heating cooker that automatically adds a brown mark to hamburgers, steaks, baked tofu, etc. produced in food factories.

[0002]

[Prior art]

 The hamburgers and steaks used in the food service industry are mass-produced at food factories. In recent years, the production of baked tofu in the factory has been increasing.

[0003] The surface of these products has charred texture such as grilled with a net, so that not only does it look like it is handmade, but it also has a high-class feeling (charcoal grilling) and good taste. The effect of visual appeal is great. Generally, these items are browned after completing cooking by using a heat source such as electricity, gas or steam. This method involves placing a rotating drum with protrusions on the surface above the conveyor, burning the gas inside to heat the surface of the drum to a high temperature and rotating it, and then mass-produced cooking that flows over the conveyor. I made a brown mark by contacting the drum with the food already used.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, since a large amount of combustion exhaust gas is generated by the combustion of gas, in order to release this to the outside, a large ventilation facility that takes in a large amount of air and discharges it together with this is required. There are restrictions on the installation location.

Further, a combustion burner having a small heating efficiency due to gas combustion and a large capacity is required, and the weight is heavy and the equipment becomes large.

Further, since the combustion exhaust gas is discharged from the bearing direction of the rotary drum, there is a problem that the temperature of the bearing portion is largely increased and the durability of the bearing is short.

An object of the present invention is to solve the above-mentioned drawbacks of the prior art, to provide a food heating cooker that is small and lightweight, has good heating efficiency, has a long life, and does not require a combustion exhaust duct. .

[0008]

[Means for Solving the Problems]

 The present invention has been made to solve the above-mentioned problems, and includes a conveyor for transferring food, a plurality of pipe heaters formed of a cylindrical metal tube or a non-metal pipe having a small diameter, and a plurality of these pipe heaters. A pair of shafts having a low thermal conductivity fixed at both ends of the tube heater, a pair of bearings rotatably supporting a pair of shafts provided on the conveyor, and a thermal conductivity fixed through the center of the shaft. Has a small central axis, an electromagnetic induction secondary coil is provided at one end of the central axis, and an electromagnetic induction primary coil is fixedly arranged at a position facing the electromagnetic induction secondary coil. A food heating cooker with a power supply connected. A high-frequency current is passed through the electromagnetic induction primary coil, and the eddy current induced in the electromagnetic induction secondary coil causes the tube heater to generate heat and flows over the conveyor. Food speed Matching the outer periphery speed of the tube heater is rotated by, browning can be a plurality of tubes heater is in contact with the food.

Further, the food heating cooker is doubled, and a belt conveyor having two belts flowing in parallel for each food is connected between the upstream food heating cooker and the downstream food heating cooker. The food may be horizontally rotated so that a brown line intersecting with a brown line formed in the upstream food heating cooker may be attached in the downstream food heating cooker.

[0010]

[Action]

 With the above-described configuration, the tube heater, which is heated to a high temperature, is formed into a cylindrical shape, so that the size and weight can be reduced.

Further, since the shaft and the central axis are made of a material having a low thermal conductivity, the temperature of the bearing portion does not rise particularly and the durability of the bearing portion is improved.

Further, since no exhaust gas is generated, no large duct is required, and there is no restriction on the installation location.

Further, since the current to the tube heater can be controlled by the inverter power supply, the temperature can be easily controlled, and even if the degree of the brown color is changed or the food to be browned is changed, it can be easily dealt with. it can.

Further, it is also possible to add various cross-shaped mesh patterns of brown.

[0015]

【Example】

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

Reference numeral 1 denotes a conveyer for transferring the food 2. A food manufacturing device and a food heating device (not shown) are provided on the upstream side of the conveyer 1. Reference numeral 3 is a tube heater composed of a thin metal tube or a non-metal tube, and is formed in a cylindrical shape with a plurality of tubes. Reference numeral 4 denotes a pair of cylindrical shafts made of a tough material having a small thermal conductivity and formed in a columnar shape. The ends 5 of the tube heater 3 are bent and inserted inward to be fixed. A central shaft 6 made of a material is fixed through, and is rotatably supported by a pair of bearings 7 fixed to the outer frame of the conveyor 1 so as to be adjustable in height. Reference numeral 8 is a disk-shaped electromagnetic induction secondary coil, which is fixed to one end of the central shaft 6 and is connected to a terminal of the tube heater 3 by a power supply cable 9. Reference numeral 10 denotes a disk-shaped electromagnetic induction primary coil, which is held at a position facing the electromagnetic induction secondary coil 8 with a constant gap so that the height can be adjusted, and is connected to the inverter power supply 11. Reference numeral 12 is a cooling fan that cools self-heating of the electromagnetic induction primary coil 10 and the electromagnetic induction secondary coil 8, and 13 is a duct that guides the wind of the cooling fan 12.

Reference numeral 14 is a belt conveyor having two belts 14a and 14b that flow in parallel for each two foods. The belts 14a and 14b have variable speeds, and an upstream food heating cooker and a downstream food heating cooker are provided. Connected between.

The operation of this embodiment having the above configuration will be described.

When the inverter power supply 11 is driven and a high-frequency current is passed through the electromagnetic induction primary coil 10 to generate a magnetic field, this magnetic field causes an eddy current in the electromagnetic induction secondary coil 8 facing the electromagnetic induction primary coil 10. Is induced. The induced current is supplied from the power supply cable 9 to the tube heater 3 to generate heat. Therefore, since the tube heater 3 serving as a browning member is formed in a cylindrical shape, the food heating cooker can be reduced in size and weight.

A space between the tube heater 3 and the conveyor 1 is appropriately set according to the food 2 flowing on the conveyor 1, and the speed of the conveyor 1 and the outer peripheral speed of the tube heater 3 formed in a cylindrical shape are the same. By controlling the number of rotations of the tube heater 3 so as to operate, the tube heater 3 comes into contact with the surface of the food product 2 and a brown mark is formed.

Since the heated tube heater 3 is fixed to the shaft 4 having a small thermal conductivity, the electromagnetic induction secondary coil fixed to the bearing portion 7 supporting the shaft 4 and the central shaft 6 having a small thermal conductivity. No heat is transferred to the bearing 8, and the durability of the bearing 7 and the electromagnetic induction secondary coil 8 is not impaired.

The coils 8 and 10 rise in temperature due to self-heating, but are cooled by the wind of the cooling fan 12 guided to the duct 13.

Next, the operation of one embodiment in which the belt conveyor 14 is connected between the upstream food heating cooker and the downstream food heating cooker will be described.

The food 2 which is streak-shaped in the upstream food heating cooker is transferred from the upstream conveyor 1 to the belt conveyor 14. The belt conveyor 14 is provided with two belts 14a and 14b for one food item 2. By making the speed of the belt 14b faster than the speed of the belt 14a, the food product 2 can be placed on a horizontal plane. The direction is changed, and in that state, it is transferred to the downstream conveyor 1, and the downstream food heating cooker is provided with a mesh-shaped brown mark that intersects with the line-shaped burns made in the upstream food heating cooker. This mesh-shaped burn can be changed by adjusting the speed of the belts 14a and 14b.

[0025]

[Effect of device]

 According to the present invention, according to the present invention, a conveyor for transferring food, a plurality of tube heaters formed of a thin metal tube or a non-metal tube having a cylindrical shape, and a heat fixing both ends of the tube heaters. A pair of shafts having a low conductivity, a pair of bearings for rotatably supporting the pair of shafts provided on the conveyor, and a central axis having a small thermal conductivity penetratingly fixed to the center of the shaft, An electromagnetic induction secondary coil is provided at one end of the central shaft, and an electromagnetic induction primary coil is fixedly arranged at a position facing the electromagnetic induction secondary coil, and an inverter power supply is connected to the food heating cooker. High-frequency current is passed through the secondary coil and the tube heater is heated by the eddy current induced in the electromagnetic induction secondary coil, so the durability of the components of the power supply unit is improved compared to the method of supplying power through the contacts. .

Further, since the tube heater, which has a high temperature, is formed in a cylindrical shape, the size and weight can be reduced.

Further, since the shaft and the central axis are made of a material having a low thermal conductivity, heat is not transferred to the bearing portion supporting the shaft and the electromagnetic induction secondary coil fixed to the central axis, and the bearing portion and the The durability of the electromagnetic induction secondary coil is not impaired.

Further, since no exhaust gas is generated, no large duct is required, and there is no restriction on the installation place.

Further, since the current to the tube heater can be controlled by the inverter power supply, the temperature can be easily controlled, and even if the degree of the brown color is changed or the food to be browned is changed, it can be easily dealt with. it can.

Further, the food heating cooker is doubled, and a belt conveyor for horizontally rotating the food is connected between the food heating cooker on the upstream side and the food heating cooker on the downstream side, so that an arbitrary mesh pattern can be obtained. It is possible to provide a food heating controller having various advantages such as being able to be browned.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a food heating cooker according to an embodiment of the present invention.

FIG. 2 is likewise a cross-sectional side view of essential parts.

FIG. 3 is likewise a sectional view taken along the direction P of the main part of FIG.

FIG. 4 is a schematic perspective view of a food heating cooker showing another embodiment in which two food heating cookers are connected and a belt conveyor for rotating food is connected therebetween.

[Explanation of symbols]

 1 Conveyor 2 Food 3 Pipe Heater 4 Shaft 6 Central Axis 7 Bearing 8 Electromagnetic Induction Secondary Coil 10 Electromagnetic Induction Primary Coil 11 Inverter Power Supply 14 Belt Conveyor 14a, 14b Belt

Claims (2)

[Scope of utility model registration request] 1. A conveyor (1) for transporting food (2)
A plurality of tube heaters (3) each having a thin tube formed in a cylindrical shape, and a pair of shafts (4) having a small thermal conductivity and fixed at both ends of the plurality of tube heaters (3). , A pair of bearings (7) that rotatably support a pair of shafts (4) provided on the conveyor (1), and a central shaft (which has a small thermal conductivity and is fixed through the center of the shafts (4)). 6), the electromagnetic induction secondary coil (8) is provided at one end of the central axis (6), and the electromagnetic induction primary coil (10) is fixedly arranged at a position facing the electromagnetic induction secondary coil (8). The food heating cooker is characterized in that the electromagnetic induction primary coil (10) is connected to an inverter power supply (11). 2. Belts (14a, 1a) that flow in parallel for each food (2) between the food heating cooker on the upstream side and the food heating cooker on the downstream side are provided with two food heating cookers.
4. A food heating cooker according to claim 1, further comprising a belt conveyor (14) having 4b).