JPH01306992A - Automatic vending machine with induction heater - Google Patents

Abstract

PURPOSE:To sharply reduce the heating time of an induction heater for an automatic vending machine by providing a coil wound in a semi-circular arc and a bucket on the coil in a storing chamber which stores articles at a room temperature by using a motor which is actuated when the ambient temperature is low and cooling the coil with cooling air, and then, controlling the temperature inside the chamber by switching the operations of a cooler and heater by means of a timer. CONSTITUTION:A coil 29 wound in a semi-circular arc is provided in parallel with the bottom surface of a bucket 28. When the temperature inside a chamber is raised by the heat produced from the coil 29, the contact of an in-chamber thermostat C21 closes and a compressor 22 is operated. Then a cooler 23 is cooled and cooling air is made to flow into a coil holder 30 by means of a fan 26 so as to cool the coil 29. When the coil 29 is provided inside the chamber for storing articles at a room temperature, a cylindrical can containing drink (b) can be surely led onto the coil 29 and the drink (b) can be heated to a fixed temperature in a fixed time. Moreover, when the coil 29 is cooled by means of the cooling air, the temperature rise of the coil 29 can be suppressed. Therefore, a large current can be made to flow so as to sharply reduce the heating time.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a vending machine equipped with an induction heating device that dispenses hot beverages by induction heating.

2. Prior Art A conventional vending machine with an induction heating device has, for example, a stock of 59
As shown in Japanese Patent No. 19395, the structure was as shown in FIGS. 5 to 7.

An example of the above-mentioned conventional vending machine equipped with an induction heating device will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes a vending machine main body, which houses articles such as canned coffee and milk, and is equipped with a well-known storage chamber 2 and an article supply device 3 for supplying the articles one by one.

Reference numeral 4 denotes a cooling device, which cools and preserves the articles in the storage chamber 2. 5 is the storage 3 /, -.

A push button switch 5a for operating the article supply device 3 and an article sales port 6 are provided on the front surface of an outer door 5 that is opened when articles are stored in the chamber 2, and a coin processing mechanism is provided inside. There is. Reference numeral 5' denotes a heat-insulating inner door that closes the front opening of the storage room 2 and is provided on the inner surface of the outer door 6. Reference numeral 7 denotes an article heating device located at the lower part of the inner door 5' and below the article outlet 8 of the storage chamber 2, and is wound in a cylindrical shape so that the upper part is sparse and the lower part is dense. An induction heating coil /I/10 is formed into a cylindrical body by integrally molding the outer circumference with epoxy resin 9, and the induction heating coil I/10 is attached closely to the outer circumferential surface of the heating coil 10.1.
A ferromagnetic material 11 with high resistivity such as ferrite is used, and an operating rod 13 that moves up and down the inner center of the coil/L/1o and has a support plate portion 12 tilted toward one side at the upper end is used. , the operating rod 13 includes a rotating plate 15 rotated by the drive of a motor 14 and a connecting rod 16 connected to the rotating plate 15.
,． The vertical movement is controlled via 16. Here, since the upper end of the molded part of the induction heating coil 10 is formed in a tapered shape, the delivery of the article is ensured, and the length of the molded part of the coil 10 is slightly larger than the height of the article. By setting it to a low height, the upper part of the p1 delivery will not reach an abnormal heating temperature. 17 is the discharge port 8
The article guiding rod 17 is located below and parallel to the support plate part 12 of the operating rod 13. The other end of the article guiding rod 17 is connected to the connecting rod 16, and is activated by the drive of the motor 14. It swings in the vertical direction in conjunction with the rod 13, and cooperates with the support plate portion 12 of the operating rod 13 in a scene-like manner. Here, the article heating device 7, the motor 14, the rotary plate 15 connecting rods 16, 16, the article guide rod 17, etc. are each connected to a frame 18 forming an article ejection window 8' corresponding to the article ejection port 8.
The frame body 18 is attached to the lower part of the outer surface of the inner door 5' and constitutes an independent unit.

Reference numeral 19 is a pedestal for articles provided in the frame 18 at a position near the article sales outlet 6.

The operation of the above configuration will be explained.

5 Bae.

First, from the coil input port of the vending machine main body 1, a specified coil is inserted.
turn on and press the selection push button switch 5a. Here, when the position of a cold article (canned coffee) that does not require heating is pressed on the plurality of selection buttons, the article supply device 3 in the storage room 2 is activated, and one cooled article is delivered to the article outlet. 8 to the discharge window 8' of the frame 18. At this time, the operating rod 13 and the guiding rod 17 of the heating device 7 are in the state shown by the chain line in FIG. The rod 17 causes the article to roll directly toward the article holder 19 and fall. Therefore, the cooled articles can be taken out from the sales outlet 6.

Next, if you want to heat the article to obtain a warm article, press the push button switch 5a at that position, and the article supply device 3 in the storage room 2 will operate as described above, and one cooled article will be discharged from the discharge port 8. At the same time, the motor 14 is driven to rotate the rotary plate 15 in the direction of the arrow in FIG. \-7 and push down the induction heating coil/l/10 to the bottom to stop driving the motor 14. Further, the article guiding rod 17 also moves in the opposite direction of the arrow in FIG. 7 in conjunction with the connecting rod 16 and stops above. Therefore, the articles led out from the discharge port 8 are guided by the article guide rod 17 and stored inside the epoxy resin cylinder 9 of the induction heating coil/I/10 in the longitudinal direction from the upper surface opening. At this time, when it is confirmed by a switch (not shown) etc. that the article has been stored in the induction heating coil 10, a timer (not shown) is activated to energize the induction heating coil 1o for a predetermined time. , alternating magnetic lines of force are generated at high frequencies in the loop connecting the inside and outside of this coil lV'lo. All of the magnetic field lines on the inside converge on the object and heat it due to eddy currents caused by electromagnetic induction. At this time, all of the outer magnetic lines of force are connected to the ferrite plate 11.
There is no heating of metal structures such as the outer door 2 when electricity is applied. Furthermore, the article is heated more strongly from the bottom, and is heated approximately evenly over the entire upper and lower circumferences due to heat movement within the article (stream A). When the heating has elapsed for a predetermined period of time, the above 77,-
7 The timer disconnects the current to the induction heating coil/I/10 and drives the motor 14 again, so that the operating rod 1
Push 3 upwards. At the same time, the article guide rod 17 is lowered to guide the heated articles through the upper opening of the induction heating coil 1o and toward the article holder 19.
It can be removed as a warm heated item from

Problems to be Solved by the Invention However, since the heating coil 10 is formed into a cylindrical body in the above-described configuration, the article drawn out through the drain window 8' must be stood upright, and the article must be placed at the upper end of the cylindrical body. Can blockage occurred. In addition, since the heating coil L'10 is installed on the outer door 5, the articles that have fallen into the heating coil L'10 cannot be heated to a constant temperature in a certain period of time due to the influence of the outside temperature. The problem was that it took a long time to heat because it was stored under cold conditions.

In view of the above-mentioned problems, the present invention provides a vending machine equipped with an induction heating device that can reliably introduce cans onto a heating coil and heat cans of the same type to a constant temperature in a short period of time.

Means for Solving the Problems In order to solve the above problems, the vending machine with an induction heating device of the present invention is provided with a coil wound in a semi-circular arc shape in the storage chamber for storage at room temperature using a heater when the outside temperature is low. The coil is cooled by cooling air, and the internal temperature is controlled by switching between cooler operation and heater operation under timer control.

Effects of the present invention With the above-described configuration, the cylindrical canned beverage can be received sideways, so it can be reliably introduced onto the coil, and since the coil is cooled, the rise in coil temperature can be suppressed, making it easier to use. A large current can be passed through it, and heating time can be significantly shortened since it can be stored at room temperature.

Furthermore, by controlling the temperature inside the refrigerator, it is possible to bring cans of the same type to a constant temperature within a certain period of time.

EXAMPLE Hereinafter, a vending machine with an induction heating device according to an example of the present invention will be described with reference to FIGS. 1 to 4. Note that explanations of those having the same structure as the conventional example will be omitted. 2o is the outside temperature thermostat, and when the outside temperature is higher than the storage room 2, the compressor 22, which is controlled by the inside thermostat c, operates, and the cooler 2
3 is cooled and when it is low, the internal thermostat H2
The heater 25 controlled by 4 is set to be energized. 26 is a fan that is constantly energized. 27.2
Reference numeral 7' denotes an inclined guide path through which the goods for sale sent out by the goods supply device 3 are guided to the bucket 28. The bottom surface of the bucket 28 is an electrical insulator formed in a semicircular arc shape. 29 is a coil wound in a semicircular arc shape, and is arranged in parallel on the bottom surface of the bucket 28. 30 is a coil holder (carp) v29
A support member 30a that supports the ferrite 31 and holds the ferrite 31.
The side walls 30b and the front wall 30c having an open top are fixed to the bottom plate 33 by a piece 32 with an electrical insulator having an open rear surface.

A coil cover 34 is made of an electrical insulator and is fixed to the coil holder 30 with screws 35 with a certain gap between the coil 29 and the coil 29. The bucket 28 is the drive shaft 3 of the motor 36
It is rotatably held by 6' and extends to 10. 3 is an inclined guideway that guides the cylindrical canned beverage to the outlet 38. 39 is an open/close lid that is normally closed. 40 is a control that sends a heating/stop signal to the coil.

The operation of the vending machine with an induction heating device configured as above will be explained.

First, the cylindrical canned beverages sent out according to the sales command roll down the inclined guide path 27 or 27' and fall into the bucket 28. After a certain period of time has elapsed after the sales command, the control 40 issues a heating signal, energizes the coil and heats the can, but the magnetic lines of force often energize the ferrite 31 at the bottom of the coil 29, heating the bottom plate 33, etc. Simultaneously with the heating signal, a signal is sent to relay R1, energizing relay R2,
When the outside temperature is lower than the storage room 2, the heater 25 is switched to the compressor 22 operating circuit, and the coil 29 is switched on.
The internal temperature rises due to the heat generated, and the internal thermostat C2
1 contact is closed, compressor 22 is operated, and cooler 2
3 is cooled, cooling air is sent into the coil holder 28 by the fan 26, and the coil 11 is cooled. After a certain period of time has passed, heating is completed, the motor 36 is driven, the bucket 28 is rotated to the position shown by the two-dot chain line in Figure 4, and the cylindrical canned beverage is discharged, and the cylindrical canned beverage is directed to the inclined guideway 37. It falls and is discharged from the discharge port 38. The motor 36 rotates in the reverse direction and the bucket 28 returns to its original position, after which the temperature inside the refrigerator is adjusted to the inside thermostat.
21, and when the amount of heat generated inside the refrigerator and the amount of heat generated outside the refrigerator become equal, the contact point of the inside thermostat C21 remains open. If the contact of the refrigerator interior thermostat L-021 remains open for a certain period of time, the contact of the off-delay timer T1 opens, the self-holding circuit is cut off, and the circuit switches to the heater 26 energization circuit, and the temperature inside the refrigerator is controlled by the refrigerator interior thermostat H24. be done.

As described above, according to this embodiment, by placing the semi-circular carp/L/29 in the room temperature storage, the cylindrical canned beverage can be reliably guided onto the coil 29 and brought to a constant temperature in a constant time. A cylindrical canned beverage can be heated, and by cooling the carp (carp) V29 with cooling air, the temperature rise of the carp) v29 can be suppressed, so a thicker current can be passed and the heating time can be shortened.

Effects of the Invention As described above, the present invention provides a coil wound in a semi-circular arc in a storage chamber for storage at room temperature by a motor when the outside temperature is low, a bucket arranged parallel to the coil, and a cooling air to cool the coil. By controlling the humidity inside the refrigerator by switching between cooler operation and heater operation using timer control, cylindrical canned beverages can be placed sideways, ensuring that they are introduced onto the coil, and cooling the coil. Since the coil temperature rise can be suppressed, a larger current can be passed, and since it can be stored at room temperature, the heating time can be significantly shortened. In addition, by controlling the temperature inside the refrigerator, it is possible to maintain a constant temperature for each type of food in a certain period of time.

Furthermore, by placing the heating device inside the refrigerator, tampering from outside can be prevented.

[Brief explanation of the drawing]

FIG. 1 is an enlarged perspective view of essential parts of a vending machine with an induction heating device according to an embodiment of the present invention, FIG. 2 is a sectional view taken along the line AA in FIG. 1, and FIG. , -> A circuit diagram of a cooling/heating system section of a vending machine with an induction heating device, FIG. 4 is a cross-sectional side view of a vending machine with an induction heating device according to an embodiment of the present invention, and FIG. 5 is a diagram of a conventional induction heating device. 6 is a cross-sectional view taken along the line ■--■ in FIG. 5, and FIG. 7 is a cross-sectional view taken along the line ■--■ in FIG. 6. 2... Storage H, chamber, 21... Internal thermostat C123... Cooler, 25... Heater, 26... Fan, 27.27'・・・・・・
Inclined taxiway, 28...Bucket, 29...
...Coil, 30...Coil holder, 30a
...Supporting member, 30b, old...side wall, 31, old...ferrite, b...cylindrical canned beverage.

Claims (3)

[Claims] (1) a bucket formed of an electrical insulator that receives the cylindrical canned beverage in a storage chamber that stores the cylindrical canned beverage at room temperature; and an inclined guide path that guides the cylindrical canned beverage to the bucket;
A vending machine with an induction heating device, characterized in that a semicircular arc-shaped coil is provided in parallel on the bottom of the bucket, and the coil heats a cylindrical canned beverage by induction. (2) It has a support member that supports a part of the bottom surface of the coil and fixes at least one ferromagnetic material, and a side wall that holds the support member, and the entire front and rear surfaces 2 are electrically conductive with a part open. A fan, heater, and cooler are connected to the insulator and the rear side,
2. A vending machine with an induction heating device according to claim 1, wherein the coil is cooled by sending cooling air by a fan. (3) The heater, which is energized when the outside temperature is low, receives an induction heating signal and switches to cooler operation, and a timer switches the cooler operation to heater energization after a certain period of time after the thermostat installed in the storage room finishes energizing. A vending machine with an induction heating device according to claim 1, characterized in that: