JP2002123864A - Control method for automatic vending machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a control method for automatic vending machine capable of keeping the internal temperature in each chamber uniform and saving the energy by controlling by turning on and off an internal fan according to an actual internal temperature. SOLUTION: This control method for automatic vending machine is provided with a partition plate 6 formed to be freely opened and closed for dividing a chamber into an upper chamber 7 and a lower chamber 8, a heater 44 for heating the upper chamber 7, a condenser 47 for cooling the lower chamber 8, the internal fan 45 for circulating hot air, the internal fan 50 for circulating cooled air, and internal temperature sensors 46 and 52 for detecting temperature of the upper chamber 7 and the lower chamber 8. The internal fans 45 and 50 are actuated until the internal temperature detected by the internal temperature sensors 46 and 52 becomes a predetermined temperature.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of controlling a vending machine in which the inside of a refrigerator is divided into a plurality of chambers and has different temperature zones, and more particularly, to a method of turning on / off a fan in a refrigerator according to an actual temperature in the refrigerator. The present invention relates to a vending machine control method capable of achieving energy saving while keeping each in-compartment temperature uniform by performing OFF control.

[0002]

2. Description of the Related Art In recent years, in order to stimulate a vending machine user's willingness to purchase a product, a front door or a heat-insulating inner door of a main body case is formed as a transparent door so that the product in the warehouse and its selling operation can be visually observed from outside. Various vending machines configured so as to be provided are provided. An example of such a vending machine is disclosed, for example, in Japanese Patent Application Laid-Open No. 10-302140 by the present applicant.

FIG. 10 is a perspective view showing a conventional vending machine according to JP-A-10-302140, and FIG.
It is a partial sectional view showing the inside of a main part case. First, the overall configuration of the vending machine will be described with reference to FIG. The main body case 1 is for storing and preserving commodities and carrying them out as necessary. The main case 1 is provided with an outer door 2 having a transparent plate 2a and an inner door 3 having a transparent plate 3a, which can be opened and closed. . Further, the main body case 1 is provided with a product storage rack 4 in which racks 4a for storing products arranged in a front and rear row are arranged vertically and horizontally.

The product storage rack 4 is composed of a box rack 4a, a spiral rack (not shown), a conveyor rack (not shown), and the like, which are formed so as to send out products forward based on a sales command. Each rack 4a
Are mounted on a plurality of shelves 5 provided in the main body case 1.

[0005] Further, in the interior of the main body case 1, a partition plate 6 as an insulating panel is provided in order to divide the storage temperature zone of commodities (for example, into two compartments for hot beverages and cold beverages).
Thus, the upper chamber 7 and the lower chamber 8 are insulated from each other. This partition plate 6 is closed in a normal sales standby state, and X
-If the bucket 10 of the Y transport mechanism 9 moves above the partition plate 6 according to the sales command, opens when receiving the goods from the rack 4a, and moves below the partition plate 6 after receiving the goods. , Configured to close.
The partition plate 6 is opened and closed by a partition plate opening / closing mechanism (not shown), and its open / closed state is detected at the time of product sale by a detection switch (not shown).

The temperature zone of each of the chambers 7 and 8 divided by the partition plate 6 is set by a hot / cold switch (not shown). And, for example,
When the upper chamber 7 is set as a hot chamber and the lower chamber 8 is set as a cold chamber, the partition plate 6 is closed to divide each of the chambers 7 and 8 into heat-insulating sections, and a heating device (not shown) provided in each of the chambers 7 and 8 The cooling device is appropriately turned on / off, and the output of a temperature sensor (not shown) provided in each of the chambers 7 and 8 is monitored to maintain a predetermined set temperature.

The hot air generated by the heating device and the cool air generated by the cooling device are operated by a fan (not shown) provided in each of the chambers 7 and 8 at all times or for a fixed time regardless of the internal temperature. Has been circulated. Also, when the inner door 3 is opened, such as when loading a product, each room 7,
The inside fan 8 is temporarily stopped to prevent hot air and cold air from being discharged to the outside. When the upper room 7 and the lower room 8 are set as cold rooms, the lower room 8
Only the cooling device and the internal fan (not shown) provided in the above are operated, and the internal fan is temporarily stopped when the inner door 3 is opened, for example, when loading a product.

Inside the inner door 3, an XY transport mechanism 9 having the front surface of each rack 4a as an XY coordinate plane is provided.
Although not shown in detail, the XY transport mechanism 9 includes an X-axis transport mechanism that horizontally moves a bucket 10 that receives a product delivered from the box rack 4a,
It comprises a Y-axis transport mechanism that moves the axis transport mechanism in the vertical direction along the Y-axis rail 20, and is controlled by the control unit.

[0009] The bucket 10 that has received the goods delivered from the rack is mounted on the XY transport mechanism 9 formed as described above.
Thus, the product is moved to the vicinity of the lower central portion, and the product is carried out from the product outlet 33 of the outer door 2 through the flapper 32 of the inner door 3.

[0010]

However, in the conventional vending machine control method, the internal fans provided in each of the chambers 7 and 8 are operated constantly or for a fixed time regardless of the internal temperature. , Inner door 3 when loading products
Was controlled to pause when opened. Therefore, it is difficult to achieve energy saving by making the inside temperature distribution uniform in each of the chambers 7 and 8 by operating the inside fan and stopping the inside fan when it is not necessary.

[0011] The present invention has been made in view of the above, and turns on / off the internal fan according to the actual internal temperature.
By performing FF control, while keeping the temperature inside each chamber uniform,
An object of the present invention is to provide a vending machine control method capable of saving energy.

[0012]

According to a first aspect of the present invention, there is provided a method for controlling a vending machine, comprising the steps of: dividing a compartment into a plurality of chambers; A heating device that heats one chamber partitioned by the partition plate, a cooling device that cools another chamber partitioned by the partition plate, and hot air provided in each of the chambers partitioned by the partition plate. Or, an in-compartment fan that circulates cool air into each of the rooms, and an in-compartment temperature detecting unit that detects the temperature of each of the rooms, and circulates hot or cold air into each of the rooms by operating the in-compartment fan. In the vending machine control method described above, the in-compartment fan is operated until the temperature in each room detected by the in-compartment temperature detecting means reaches a predetermined value.

When the temperature in each room is within a preset temperature range, the operation of the internal fan is stopped, and the operation is performed only when the internal temperature is set to a predetermined temperature. That is, the inside fan is turned ON / O according to the actual inside temperature in each room.
By performing FF control, while keeping the temperature inside each chamber uniform,
Energy saving can be achieved.

According to a second aspect of the present invention, there is provided a method for controlling a vending machine, wherein a partition plate which divides the inside of a refrigerator into a plurality of chambers and which is openable and closable, and one chamber partitioned by the partition plates are heated. A heating device, a cooling device that cools another chamber partitioned by the partition plate, and an in-compartment fan that is provided in each of the chambers partitioned by the partition plate and circulates hot air or cold air into the respective rooms. A method for controlling a vending machine, comprising: a refrigerator internal temperature detecting means for detecting a temperature of each of the chambers, and circulating hot air or cold air into each of the chambers by operating the fan in the refrigerator. The internal fan is operated until the temperature difference in each room detected by the temperature detecting means reaches a predetermined value.

Therefore, by controlling ON / OFF of the internal fan in accordance with the temperature difference between the heating chamber and the cooling chamber, it is possible to save energy while keeping the internal temperatures uniform.

According to a third aspect of the present invention, in the method for controlling a vending machine, the operation of the in-compartment fan is started when the main power of the vending machine is turned on. Thus, the internal fan can be operated only during the heating operation or the cooling operation, and energy can be saved.

Further, in the control method for a vending machine according to a fourth aspect of the present invention, the operation of the internal fan is started when an inner door for insulating the inside of the internal compartment is closed. Thereby, at the time of loading a product, the operation of the internal fan is temporarily stopped to prevent hot air and cold air from being discharged to the outside, and the internal fan is turned off according to the actual internal temperature.
By performing the N / OFF control, it is possible to save energy while maintaining the temperature in each chamber uniformly.

Further, in the control method for a vending machine according to a fifth aspect of the present invention, the operation of the internal fan is started when all the rooms are switched to the cooling operation. Thus, the cool air can be uniformly circulated in the refrigerator by utilizing the internal fan provided for circulating the hot air for circulating the cool air.

[0019]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vending machine control method according to the present invention will be described below in detail with reference to the drawings. The present invention is not limited by the embodiment.

Embodiment 1 FIG. 1 is a block diagram showing a main part of a vending machine according to a first embodiment of the present invention, FIGS. 2 and 3 are perspective views schematically showing a configuration inside a main body case, and FIG. FIG. 5 is a flowchart showing the control operation of the fan (upper), and FIG. 5 is a flowchart showing the control operation of the internal fan (lower). In the following description,
Members that are the same or equivalent to those already described include
The same reference numerals are given and duplicate description is omitted, and only different points will be described.

As shown in FIGS. 1 to 3, the open detection switch 40 and the close detection switch 41 are for detecting the open / closed state of the partition plate 6, respectively. The H / C switch 42 is for switching the temperature zone of the upper chamber 7 or the lower chamber 8 to hot or cold. The inner door switch 43 is for detecting the open / closed state of the inner door 3.

The hot air heated by the heating device 44 is circulated in the upper chamber 8 by the internal fan 45, and the temperature of the upper chamber 8 is detected by an internal temperature sensor 46. A condenser 47, a solenoid valve 48, and an evaporator 4 constituting a refrigeration cycle device are provided at a lower portion of the main body case 1.
9, an internal fan 50 and the like are provided. The temperature of the evaporator 49 is detected by the evaporator temperature sensor 51 and the lower chamber 8 is detected.
Is detected by the internal temperature sensor 52.

The above members are controlled by the main body control section 58. Note that the bucket 10 moves left and right on the X-axis rail 11. Main body control unit 58
Is connected by a communication line to a main control unit (not shown) that controls the entire vending machine.

Next, the control operation of the vending machine as a main part of the present invention will be described with reference to FIGS. First, the control operation of the in-compartment fan 45 will be described with reference to FIG. When the main power supply of the vending machine is turned on (step S10), the inside fan 45 is energized and operated (step S11). Then, the internal fan 45 is kept operating until the detected temperature Tu of the internal temperature sensor 46 becomes equal to or lower than the preset operation stop temperature t2 of the internal fan 45 (No at Step S12).

When the temperature Tu detected by the in-chamber temperature sensor 46 becomes lower than the operation stop temperature t2 (Yes at step S12),
The energization of the internal fan 45 is stopped (step S1).
3). Then, the detected temperature Tu of the internal temperature sensor 46 is
The energization of the internal fan 45 is stopped until the preset operation start temperature t1 of the internal fan 45 is reached (No at step S14), and the detection temperature T of the internal temperature sensor 46 is detected.
When u reaches the operation start temperature t1 (Yes at Step S14), the internal fan 45 is energized and operated (Step S11).

As described above, when the temperature in the upper chamber 7 is within the preset temperature range, the operation of the internal fan 45 is stopped, and the operation is performed only when the internal temperature is set to the predetermined temperature. Thus, energy saving can be achieved.

Next, the control operation of the internal fan 50 will be described with reference to FIG. Vending machine main power is ON
(Step S20), the internal fan 50 is energized and operated (Step S21). Then, the in-compartment fan 50 is kept operating until the detection temperature Td of the in-compartment temperature sensor 52 becomes equal to or less than the preset operation stop temperature t4 of the in-compartment fan 50 (No in step S22).

When the temperature Td detected by the internal temperature sensor 52 becomes equal to or lower than the operation stop temperature t4 (Yes at Step S22),
The energization of the internal fan 50 is stopped (step S2).
3). And the detection temperature Td of the internal temperature sensor 52 is
The energization of the internal fan 50 is stopped until the preset operation start temperature t3 of the internal fan 50 is reached (No at step S24), and the detected temperature T of the internal temperature sensor 52 is set.
When d reaches the operation start temperature t3 (Yes at Step S24), the internal fan 50 is energized and operated (Step S21).

As described above, when the temperature in the lower chamber 8 is within the preset temperature range, the operation of the internal fan 50 is stopped, and the operation is performed only when the internal temperature is set to the predetermined temperature. Thus, energy saving can be achieved.

As described above, according to the vending machine control method according to the first embodiment, the internal fans 45 and 50 are turned ON / O in accordance with the actual internal temperatures in the respective rooms 7 and 8.
By performing FF control, while keeping the temperature inside each chamber uniform,
Energy saving can be achieved.

Embodiment 2 FIG. 6 is a flowchart showing a control operation of the internal fan (upper) according to the second embodiment of the present invention, and FIG. 7 is a flowchart showing a control operation of the internal fan (lower). In the first embodiment, the in-compartment fans 45 and 50 are controlled according to the respective temperatures in the upper and lower chambers 7 and 8.
In contrast to the ON / OFF control of
Due to the temperature difference between the upper and lower chambers 7 and 8, the internal fan 4 of the upper chamber 7
5 for ON / OFF control.

First, the control operation of the internal fan 45 will be described with reference to FIG. When the main power of the vending machine is turned on (step S30), the inside fan 45 is energized and operated (step S31). And the upper and lower chambers 7,
Until the temperature difference Tk (= Tu−Td) within 8 becomes lower than the preset temperature t5, the in-compartment fan 45 is kept operating (No in step S32).

When the temperature difference Tk in the upper and lower chambers 7 and 8 becomes lower than the preset temperature t5 (Yes at step S32), the power supply to the internal fan 45 is stopped (step S32).
33). Then, the power supply to the internal fan 45 is kept stopped until the temperature difference Tk between the upper and lower chambers 7 and 8 becomes equal to or higher than the preset temperature t5 (No at Step S34), and the temperature in the upper and lower chambers 7 and 8 is maintained. When the difference Tk becomes equal to or higher than the preset temperature t5 (Yes at Step S34), the internal fan 45
(Step S31).

As described above, by operating the in-compartment fan 45 only when the temperature difference Tk in the upper and lower chambers 7 and 8 reaches a predetermined value, energy can be saved.

Next, the control operation of the internal fan 50 will be described with reference to FIG. Vending machine main power is ON
(Step S40), the internal fan 50 is energized and operated (step S41). Then, the internal fan 50 is kept operating until the temperature Td detected by the internal temperature sensor 52 becomes equal to or lower than the preset operation stop temperature t4 of the internal fan 50 (No at Step S42).

When the temperature Td detected by the internal temperature sensor 52 becomes equal to or lower than the operation stop temperature t4 (Yes at step S42),
The energization of the internal fan 50 is stopped (step S4).
3). And the detection temperature Td of the internal temperature sensor 52 is
The energization of the internal fan 50 is kept stopped until the preset operation start temperature t3 of the internal fan 50 is reached (No at Step S44), and the detection temperature T of the internal temperature sensor 52 is set.
When d reaches the operation start temperature t3 (Yes at Step S44), the internal fan 50 is energized and operated (Step S41).

When the temperature in the lower chamber 8 is within the preset temperature range, the operation of the internal fan 50 is stopped, and the operation is performed only when the internal temperature is set to the predetermined temperature. Thus, energy saving can be achieved.

As described above, according to the vending machine control method according to the second embodiment, the internal fan 45 is controlled ON / OFF in accordance with the temperature difference Tk between the upper and lower chambers 7 and 8, and By controlling ON / OFF of the in-compartment fan 50 in accordance with the actual in-compartment temperature in the lower chamber 8, energy saving can be achieved while maintaining the in-compartment temperatures uniformly.

In the second embodiment, the internal fan 50 is turned off according to the actual internal temperature in the lower chamber 8.
Although the N / OFF control has been described, the present invention is not limited to this. Regardless of the actual internal temperature of the lower chamber 8,
Other than when the inner door 3 is opened and closed, it may be operated constantly.

Embodiment 3 FIG. 8 is a flowchart showing a control operation of the in-compartment fan (upper) according to the third embodiment of the present invention. In the first embodiment, when the main power supply of the vending machine is turned on, the energization of the internal fans 45 and 50 is started, whereas in the third embodiment, as shown in FIG. When the inner door 3 is closed (when the output of the inner door door switch 43 is ON) after the loading of
5 (step S50 affirmative, step S5
1) The internal fan 45 is kept operating until the detected temperature Tu of the internal temperature sensor 46 becomes equal to or lower than the preset operation stop temperature t2 of the internal fan 45 (No at step S52).

Then, the detected temperature T of the internal temperature sensor 46
When u becomes lower than the operation stop temperature t2 (step S52).
Affirmative), the energization of the internal fan 45 is stopped (step S).
53), and stands by until the next product loading (step S50). The internal fan 50 can be controlled in the same manner as the internal fan 45.

As described above, according to the control method of the vending machine according to the third embodiment, the operation of the internal fans 45 and 50 is temporarily stopped and the hot air and the cold air are out of the warehouse when the products are loaded. To prevent the release of air and turn on / off the internal fans 45 and 50 according to the actual internal temperature.
By performing the control, it is possible to save energy while maintaining the temperature in each compartment uniformly.

Embodiment 4 FIG. FIG. 9 is a flowchart showing a control operation of the in-compartment fan (upper) according to the fourth embodiment of the present invention. In the first embodiment, when the main power supply of the vending machine is turned on, the energization of the internal fans 45 and 50 is started. On the other hand, in the fourth embodiment, as shown in FIG. When the upper chamber 7 is switched from hot to cold by the / C switch 42, the internal fan 45 is operated until the inside of the upper chamber 7 reaches a specified temperature.

That is, when the upper chamber 7 is switched from hot to cold by the H / C switch 42 (Yes at step S60), the energization of the internal fan 45 is started (step S61). Detection temperature T
u is the preset operation stop temperature t of the internal fan 45
The in-compartment fan 45 is kept operating until it becomes 2 or less (No at Step S62). When the detected temperature Tu of the in-compartment temperature sensor 46 becomes equal to or lower than the operation stop temperature t2 (Yes in Step S62), the power supply to the in-compartment fan 45 is stopped (Step S63). In this case, the partition plate 6 is in an open state.

As described above, according to the vending machine control method of the fourth embodiment, when the upper chamber 7 is switched from hot to cold, the internal fan provided for circulating hot air is provided. By utilizing 45 for cold air circulation,
Cold air can be uniformly circulated in the refrigerator.

The vending machine can be controlled by arbitrarily combining the first to fourth embodiments.

[0047]

As described above, according to the method for controlling a vending machine according to the present invention (claim 1), the partition plate formed by dividing the inside of the storage into a plurality of chambers and being openable and closable, and the partition plate A heating device that heats one room separated by the partition, a cooling device that cools another room separated by the partition plate, and a cooling device that is provided in each of the chambers separated by the partition plate to generate hot air or cold air. An automatic vending machine having an internal fan circulating in each room and an internal temperature detecting means for detecting a temperature of each room, and activating hot air or cold air in each room by operating the internal fan. In the control method of the machine, the internal fan is operated until the temperature in each of the rooms detected by the internal temperature detecting means reaches a predetermined value, so that the temperature in each of the rooms is set to a preset temperature range. In some cases within, to stop the operation of the internal fan can only operated when the inside temperature to a predetermined temperature. That is, by controlling ON / OFF of the internal fan according to the actual internal temperature in each room, it is possible to save energy while maintaining each internal temperature uniformly.

Further, according to the vending machine control method of the present invention (claim 2), a partition plate which divides the inside of the refrigerator into a plurality of rooms and is formed to be openable and closable, and a single room partitioned by the partition plates. A cooling device that cools another chamber partitioned by the partition plate, and a cabinet that is provided in each of the chambers partitioned by the partition plate and circulates hot air or cold air into each of the chambers. An internal fan, and a vending machine control method comprising: an in-compartment temperature detecting means for detecting the temperature of each of the chambers, wherein hot air or cold air is circulated in each of the rooms by operating the in-compartment fan. The internal fan is operated until the temperature difference in each room detected by the internal temperature detecting means reaches a predetermined value. Therefore, the internal fan is turned on according to the temperature difference between the heating chamber and the cooling chamber. / By OFF control, while uniformly hold the inside temperature, and therefore energy savings can be made.

According to the control method of the vending machine according to the present invention (claim 3), the operation of the internal fan is started when the main power supply of the vending machine is turned on, so that the heating operation is performed. Alternatively, the internal fan can be operated only during the cooling operation, and energy can be saved.

According to the control method for a vending machine according to the present invention (claim 4), the operation of the internal fan is started when the inner door for insulating the inside of the internal compartment is closed. During loading of the product, the operation of the internal fan is temporarily stopped to prevent hot air and cold air from being released outside the internal chamber, and the internal fan is turned on according to the actual internal temperature.
By performing the / OFF control, it is possible to save energy while maintaining the temperature in each chamber uniformly.

Further, according to the vending machine control method of the present invention (claim 5), the start of operation of the internal fan is set to the time when all the rooms are switched to the cooling operation, thereby circulating hot air. The cool air can be uniformly circulated in the refrigerator by utilizing the internal fan provided for the cooling air circulation.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a main part of a vending machine according to an embodiment of the present invention.

FIG. 2 is a perspective view schematically showing a configuration inside a main body case.

FIG. 3 is a perspective view schematically showing a configuration inside a main body case.

FIG. 4 is a flowchart showing a control operation of an internal fan (upper).

FIG. 5 is a flowchart showing a control operation of the in-compartment fan (lower).

FIG. 6 is a flowchart showing a control operation of an internal fan (upper) according to the second embodiment of the present invention;

FIG. 7 is a flowchart showing a control operation of the in-compartment fan (lower).

FIG. 8 is a flowchart showing a control operation of an internal fan (upper) according to the third embodiment of the present invention;

FIG. 9 is a flowchart showing a control operation of the in-compartment fan (upper) according to the fourth embodiment of the present invention.

FIG. 10 is a perspective view showing a conventional vending machine.

FIG. 11 is a partial sectional view showing the inside of a main body case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main body case 2 Outer door 3 Inner door 4 Commodity storage rack 6 Partition plate 7 Upper room 8 Lower room 9 XY conveyance mechanism 10 Bucket 42 H / C changeover switch 43 Inner door switch 44 Heating device 45, 50 Fan in store 46, 52 Internal temperature sensor 47 Condenser 58 Body control unit

[Procedure amendment]

[Submission date] October 13, 2000 (2000.10.
13)

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0022

[Correction method] Change

[Correction contents]

The hot air heated by the heating device 44 is circulated in the upper chamber 7 by the internal fan 45,
The temperature of 7 is detected by an internal temperature sensor 46. A condenser 47, a solenoid valve 48, and an evaporator 4 constituting a refrigeration cycle device are provided at a lower portion of the main body case 1.
9, an internal fan 50 and the like are provided. The temperature of the evaporator 49 is detected by the evaporator temperature sensor 51 and the lower chamber 8 is detected.
Is detected by the internal temperature sensor 52.

 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshinari Ito 1-1-1 Tanabe Nitta, Kawasaki-ku, Kawasaki-shi, Kanagawa F-term in Fuji Electric Co., Ltd. (Reference) 3E044 AA01 CC08 DB16 FB12 3L045 AA02 BA01 CA02 CA09 DA02 EA01 LA09 LA13 MA02 NA03 NA15 NA21 PA02 PA03 PA04

Claims (5)

[Claims] 1. A partition plate that divides the inside of a refrigerator into a plurality of chambers and is formed to be openable and closable, a heating device that heats one chamber partitioned by the partition plate, and another chamber partitioned by the partition plate. A cooling device that cools, a fan in the refrigerator that is provided in each of the rooms separated by the partition plate and circulates hot air or cold air into the respective rooms, and a temperature detector in the refrigerator that detects the temperature of the respective rooms. A vending machine control method in which hot air or cold air is circulated in each room by operating the inside fan, wherein the temperature in each room detected by the inside temperature detecting means is a predetermined value. A method of controlling a vending machine, wherein the internal fan is operated until the time becomes. 2. A partition plate which divides the inside of the refrigerator into a plurality of chambers and is formed to be freely openable and closable; a heating device for heating one chamber partitioned by the partition plate; and another one chamber partitioned by the partition plate. A cooling device that cools, a fan in the refrigerator that is provided in each of the rooms separated by the partition plate and circulates hot air or cold air into the respective rooms, and a temperature detector in the refrigerator that detects the temperature of the respective rooms. A vending machine control method in which hot air or cold air is circulated in each room by operating the internal fan, wherein a temperature difference in each room detected by the internal temperature detecting means is predetermined. A method for controlling a vending machine, wherein the internal fan is operated until the value reaches a value. 3. The operation of the in-compartment fan is started when the main power of the vending machine is turned on.
Or the control method of the vending machine according to 2. 4. The vending machine control method according to claim 1, wherein the operation of the in-compartment fan is started when an inner door for insulating the inside of the compartment is closed. 5. The method according to claim 1, wherein the operation of the internal fan is started when all rooms are switched to the cooling operation.
The method for controlling a vending machine according to the above.