JP2854044B2 - High frequency induction heating device - Google Patents

Description

The present invention relates to an apparatus for heating a canned beverage in a vending machine by a high-frequency induction heating method.

b. Conventional technology In vending machines, canned beverages such as coffee and cocoa have conventionally been warmed in a warm room. However, if it is kept in a warm room for a long time, the taste will be impaired.

Therefore, recently, a method of heating a can in a short time by high-frequency induction heating of a can has been adopted. As such a device, for example, as shown in JP-A-1-201797, a can is put in a semi-cylindrical bucket in a state of being laid down, and a high-frequency induction coil arranged below the bucket is energized to supply electric power to the inside of the can. After warming a beverage, a bucket is rotated to drop a can to a carry-out chute. Note that, when the can is put into the bucket with the can standing upright, the movable arm hits the can and knocks it down.

c. Problems to be Solved by the Invention However, such a device has to be provided with a mechanism for rotating the bucket and a movable arm for controlling the posture of the can, which has a problem that the mechanism becomes complicated. Was. In addition, since the bucket is rotated to carry out the can, it takes a considerable time to carry out the can.

Furthermore, since the can is heated in a stationary state, the efficiency of heat conduction from the can wall to the beverage is not very good, and there is a disadvantage that it takes time for the beverage in the can to warm.

d. Means for Solving the Problems The present invention has been made in view of such circumstances, and a purpose thereof is to provide a high-frequency induction heating device that solves the above problems. The gist is that a tubular member made of an electrical insulator that is arranged at an angle and constitutes a part of a passage through which the can falls, a high-frequency induction heating coil disposed outside the tubular member, and the tubular member A rotating means, and a stopper means protruding and retracting in a drop passage below the tubular member, the can filled with beverage is dropped into the tubular member through the drop passage, and the can is stopped by the stopper After the beverage in the can is heated, the high-frequency induction heating coil is energized while rotating the tubular member, and the stopper is disengaged. To drop the can from inside the tubular member A high-frequency induction heating apparatus characterized in that:

Hereinafter, an embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a cylindrical member made of resin.
Is rotatably supported by a pair of upper and lower support rollers 2. Further, the cylindrical member 1 is disposed so as to be inclined, and an upper end opening 1a thereof has an opening 3a of the loading chute 3 and a lower end opening 1b.
Are opposed to the openings 4a of the carry-out chute 4, respectively. A high-frequency induction heating coil 6 connected to a high-frequency power supply device (not shown) is wound around the inner peripheral surface of the bobbin 5, and the bobbin 5 is disposed and held so as to surround the outer periphery of the tubular member 1. . A ring gear 7 is attached to the upper outer peripheral surface of the tubular member 1, and the gear 7 meshes with a gear 9 attached to a shaft 8 a of a motor 8. Reference numeral 10 denotes stopper means, which comprises an electromagnetic solenoid 11 and a roller 12 provided at the tip of a shaft 11a. And electromagnetic solenoid
With the operation and non-operation of 11, the shaft 11a moves in the directions of arrows B and C in the figure, so that the roller 12 protrudes and descends into the drop passage 15 below the tubular member 1. In addition,
The temperature of the can a is measured by the infrared temperature sensor 16.

FIG. 2 is a view showing a state in which this device is assembled in a vending machine, and is configured so that a can a is put into a loading chute 3 from a hopper 13. The can a dropped from the tubular member 1 to the carry-out chute 4 is taken out of the machine from the outlet 14.

Now, when the can a is put into the carry-in chute 3 from the hopper 13, the can a falls through the carry-in chute 3 into the cylindrical member 1. Then, as shown in FIG. 1, the lower end is brought into contact with the roller 12 of the stopper means 10 to stop. Next, the motor 8 is operated to operate the cylindrical member 1.
, A high-frequency current is supplied from the power supply to the high-frequency induction heating coil 6. Then, the can a rotates with the rotation of the tubular member 1, and a high-frequency current flows through the peripheral wall to heat it. At this time, since the beverage in the can a is stirred, the heat of the peripheral wall is efficiently conducted to the beverage. Further, since the roller 12 rotates with the rotation of the can a, the rotation of the can a is not hindered. Then, the infrared thermometer detects that the temperature of the can a has reached a predetermined value. At the same time, the heating power is turned off by the signal, and the electromagnetic solenoid 11 is operated to move the shaft 11a in the direction of arrow C in the figure. , The can a may be dropped onto the discharge chute 4.

e. Effects of the Invention According to the present invention, since the can is configured to be naturally dropped from the inside of the tubular member to the carry-out chute simply by releasing the engagement of the stopper means with the can, the can transport time is reduced. Becomes shorter. Further, since the loading and unloading of cans are performed by natural fall, the mechanism is extremely simple.

Further, since the can is heated while being rotated, the efficiency of heat conduction from the can wall to the beverage is improved, and the heating time of the can can be reduced.

[Brief description of the drawings]

1 and 2 show an embodiment of a high-frequency induction heating apparatus according to the present invention. FIG. 1 is a longitudinal sectional view of the apparatus, showing the inside of a dotted line frame A in FIG. FIG. 4 is an explanatory view of a state where the device is assembled in a vending machine. DESCRIPTION OF SYMBOLS 1 ... Cylindrical member, 2 ... Support roller, 3 ... Carry-in chute, 4 ... Carry-out chute, 6 ... High frequency induction heating coil, 8 ... Motor, 10 ... Stopper means, 12 ... Roller. 15 ... Falling path,

Continuation of the front page (56) References JP-A-54-699 (JP, A) JP-A-55-162191 (JP, A) JP-A-1-201797 (JP, A) JP-A-2-197992 (JP) JP-A-3-83192 (JP, A) JP-A-3-121592 (JP, A) JP-A 53-140498 (JP, U) JP-A 54-15596 (JP, U) JP-A 55-17282 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) H05B 6/10 331 G07F 11/70

Claims (1)

(57) [Claims] 1. A tubular member made of an electrically insulating material, which is arranged in an inclined manner and constitutes a part of a passage through which a can falls, a high-frequency induction heating coil disposed outside the tubular member, Driving means for rotating the member, comprising a stopper means that protrudes and retracts in the drop passage below the tubular member, drops the can filled with beverage into the tubular member through the drop passage,
After the can is engaged with the stopper means and held in the tubular member, the high-frequency induction heating coil is energized while rotating the tubular member, and the beverage in the can is warmed. A high-frequency induction heating device wherein the engagement is released to drop the can from the inside of the tubular member.