JPH0655528U - 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 cylindrical shape in which a plurality of tube heaters 6 made of thin metal tubes or non-metal tubes are provided on the outer surface of a shaft 3 having a small thermal conductivity rotatably supported by a pair of bearings 4 The rotary drum 5 is fixed, the electromagnetic induction secondary coil 8 is provided at one end of the shaft 3, 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. Then, a high-frequency current is passed through the electromagnetic induction primary coil 10, and the eddy current induced in the electromagnetic induction secondary coil 8 causes the tube heater 6 to generate heat, so that the speed of the food 2 flowing on the conveyor 1 is increased by the rotating drum 5. The rotary drum 5 was rotated so as to match the peripheral speed, and the plurality of protruding tube heaters 6 were brought into contact with the food 2 to heat and brown the food.

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 generally mass-produced at food factories. In recent years, the production of baked tofu in the factory has been increasing.

These products have a rotary drum having a projection on the surface above the conveyor, and burn the gas inside or heat the surface to a high temperature with electricity to rotate the product, which is then mass-produced on the conveyor. In order to make it look like it was hand-made, it has a brown mark on the surface so that it looks like it was handmade.

[0004]

[Problems to be solved by the device]

 In the above-mentioned conventional technology, since the combustion of gas generates a large amount of combustion exhaust gas, a large ventilation facility that takes in a large amount of air and discharges it together with the large amount of air is required, and the installation location of this large duct is limited.

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.

[0007]

[Means for Solving the Problems]

 The present invention has been made to solve the above problems, and an object of the present invention is to provide a food heating cooker that is small and lightweight, has high heating efficiency, has a long life, and does not require a combustion exhaust duct. .

A conveyor for transferring food, a shaft having low thermal conductivity rotatably supported by a pair of bearings, and a cylindrical rotating drum fixed on the outer side of the shaft concentrically. , A plurality of tube heaters made of thin metal tubes or non-metal tubes are provided on the outer surface of the rotary drum, and an electromagnetic induction secondary coil is further provided at one end of the shaft. Electromagnetic induction primary coil is fixedly installed at a position facing to, and the inverter power supply is connected. High frequency current is passed through the electromagnetic induction primary coil, and the tube heater is heated by the eddy current induced in the electromagnetic induction secondary coil. Then, by rotating the rotating drum so that the peripheral speed of the rotating drum matches the speed of the food flowing on the conveyor, a plurality of protruding tube heaters come into contact with the food to heat and burn it. Can be attached.

[0009]

[Action]

 With the above configuration, since the tube heater which becomes high in temperature is mounted on the outer surface of the rotary drum, it is not necessary to unnecessarily raise the temperature of the rotary drum, and the rotary drum can be reduced in size and weight.

Further, since the shaft is 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 is improved.

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

Furthermore, since the current to the tube heater can be controlled by the inverter power supply, the temperature of the rotating drum 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. can do.

[0013]

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

Reference numeral 1 is a conveyor for transferring a food product 2 to be browned. On the upstream side of the conveyor 1, food manufacturing equipment and food heating equipment (not shown) are provided. Reference numeral 3 denotes a shaft, which is made of a tough material having a small thermal conductivity and formed into a cylindrical shape, and is rotatably supported by a pair of bearings 4 fixed to the outer frame of the conveyor 1 in a height-adjustable manner. Reference numeral 5 denotes a rotary drum, which is fixed on the outer side of a concentric circle with the shaft 3, and has a plurality of high-power tube heaters 6 made of thin metal tubes or non-metal tubes protruding on its outer surface. The end 7 of the tube heater 6 is arranged so as to be bent inward at the end of the rotary drum 5 and penetrates the shaft 3. A disk-shaped electromagnetic induction secondary coil 8 is fixed to one end of the shaft 3 on a concentric circle and is connected to a terminal 7 of the tube heater 6 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 an inverter power supply 11. Reference numeral 12 is a cooling fan for cooling the self-heating of the electromagnetic induction primary coil 10 and the electromagnetic induction secondary coil 8, and 13 is a duct for guiding the wind of the cooling fan 12.

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 6 arranged on the rotating drum 5 to generate heat. Therefore, since the surface of the tube heater 6 which plays a role of browning is mainly heated, it is not necessary to raise the temperature of the rotary drum 5 indiscriminately, and the rotary drum 5 can be reduced in size and weight.

Then, the gap between the tube heater 6 and the conveyor 1 is appropriately provided according to the food 2 flowing on the conveyor 1, and the rotating drum 5 is arranged so that the speed of the conveyor 1 and the outer peripheral speed of the rotating drum 5 are the same. By controlling and operating the rotation speed of the, the tube heater 6 protruding from the surface of the food 2 comes into contact with the surface of the food 2 to make a brown mark.

Since the rotating drum 5 heated by the heated tube heater 6 is fixed to the shaft 3 having a small thermal conductivity, the heat is transmitted to the bearing 4 supporting the shaft 3 and the electromagnetic induction secondary coil 8. Therefore, the heat radiation from the rotating drum 5 is reduced and the durability of the bearing 4 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.

[0020]

[Effect of device]

 As described above, according to the present invention, a conveyor for transferring food, a shaft having small thermal conductivity rotatably supported by a pair of bearings, and a cylindrical rotating drum fixed on the outer side of a concentric circle of the shaft. A plurality of tube heaters made of thin metal tubes or non-metal tubes are provided on the outer surface of the rotating drum, and an electromagnetic induction secondary coil is provided at one end of the shaft. An electromagnetic induction primary coil is fixedly installed at a position opposite to, and an inverter power supply is connected. A high-frequency current is applied to the electromagnetic induction primary coil, and a tube heater is generated by the eddy current induced in the electromagnetic induction secondary coil. Since heat is generated, the durability of the components of the power supply unit is improved compared to the method of supplying power via the contacts.

Further, since the surface of the tube heater, which plays a role of adding the browning, is mainly heated, it is not necessary to unnecessarily raise the temperature of the rotating drum, and the rotating drum can be reduced in size and weight.

Further, since the rotating drum heated by the heated tube heater is fixed to the shaft having a small thermal conductivity, the rotating drum does not transmit heat to the bearing supporting the shaft or the electromagnetic induction secondary coil, and the rotating drum does not rotate. It reduces heat radiation from the drum and does not impair the durability of the bearing and the electromagnetic induction secondary coil.

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

Furthermore, since the current to the tube heater can be controlled by the inverter power supply, the temperature of the rotating drum can be easily controlled, and even if the degree of brown color or the food to be browned is changed, it can be easily handled. can do.

As described above, by rotating the rotating drum so that the outer peripheral speed of the rotating drum is matched with the speed of the food flowing on the conveyor, a plurality of protruding tube heaters come into contact with the food to heat and burn the food. As a result, it is possible to provide a food heating cooker having various advantages.

[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 a sectional side view of an essential part of the same.

FIG. 3 is likewise a sectional view of a main part A-A ′.

[Explanation of symbols]

 1 Conveyor 2 Food 3 Shaft 4 Bearing 5 Rotating Drum 6 Tube Heater 8 Electromagnetic Induction Secondary Coil 10 Electromagnetic Induction Primary Coil 11 Inverter Power Supply

Claims (1)

[Scope of utility model registration request] 1. A shaft (3) having a small thermal conductivity, which is rotatably supported by a pair of bearings (4), and a shaft (3).
And a cylindrical rotating drum (5) fixed on the outer side of the concentric circle of the rotating drum (5), the outer surface of the rotating drum (5) comprises a plurality of tube heaters (3) made of thin metal tubes or non-metal tubes. 6) is arranged, an electromagnetic induction secondary coil (8) is further provided at one end of the shaft (3), and the electromagnetic induction primary coil (10) is fixed at a position facing the electromagnetic induction secondary coil (8). A food heating cooker, which is provided with an inverter power supply (11) connected to the electromagnetic induction primary coil (10).