JPS6315393A - Controller for vending machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention B) Industrial Application Field The present invention relates to a control device for a vending machine that sells both cold drinks cooled by a cooling device and hot drinks prepared using water boiled by a heater. .

(B) Prior Art Generally, this type of vending machine requires a large load current value because it boils water with a large-capacity heater while operating a cooling device. Therefore, the trap of Japanese Utility Model Publication No. 55-8056 is to change the current supplied to the heater depending on whether the cooling device is in operation or stopped, so that the load current value of the vending machine can always be kept below a certain set value. The following configuration is shown. This gives priority to cooling operation over water heating operation.

H1 Problems to be solved by the invention In this way, the conventional technology is fixed so that either the cooling operation or the water heating operation takes priority over the other. I can't respond adequately. For example, the above publication's 1m
If priority is set to cooling operation, hot beverages will be sold more often (when they are sold, the hot water temperature will drop and hot beverages will often be sold out.Also, if priority is set to boiling water, more cold drinks will be sold). Cold drinks don't stay cold enough.

Therefore, the present invention provides a control device for a vending machine that determines priority between hot drinks and cold drinks depending on the sales situation.

B) Means for Solving Problems The structure of the present invention will be described with reference to FIG. 1, which shows an embodiment in blocks. In the figure, a hot beverage counter (3) counts up every time a hot beverage selection switch (6) is operated to count the number of hot beverages sold, and a cold beverage counter (4) counts up the number of times hot beverages are sold. Each time the switch (7) is operated, a count is incremented to count the number of sales of cold drinks. The timer (8) outputs a reset signal to the counter (3141) every fixed unit time. Therefore, the counter (31 (41) counts the number of sales of hot beverages and cold beverages within a unit time. Control circuit (5) is a cooling system that responds to input from hot water thermostat (9) and cooling operation command!+
11 and the heater (2), and the current value of the heater (2) is determined by the count value of the counters (3) and (4).

(e) The action control circuit (5) detects the force with higher sales frequency depending on which of the hot beverage counter (3) and the cold beverage counter (4) reaches the scheduled value first, and accordingly detects the power of the heater (2). Change the energizing current value.

(f) Example The present invention will be specifically explained with reference to FIG. Hot beverage counter (3A) is hot beverage selection switch (6A)
When the output side of the inverter Qll becomes "H" level by operation, the count increases by one, and the cold beverage counter (4A) changes to "H" level by the operation of the cold beverage selection switch (7A). When it reaches the level, it counts up by one. and counter (3A) (4
When A) counts the scheduled value, it outputs the "H" level to the Q output terminal, but relay R1 is connected to the Q output terminal of the hot beverage counter (3A) via an inverter C121, and the cold beverage counter (3A) outputs "H" level to the Q output terminal. 4A) Q output terminal is OR
It is connected to the reset terminal of the hot beverage counter (3A) together with the timer (8A) via gate C13.

The timer (8A) starts the counter (
A reset signal is output to each reset terminal of 3A) (4A). Also, relay R1 is the hot water thermostat (9A) K
Excitation is controlled by the two heaters, and the heaters (two) are connected to the phase control circuit α through the normally open switch R6-3 of the relay R2. The phase control circuit α4 is a well-known circuit equipped with a semiconductor control element such as a triac, and changes the current flowing to the heaters (two persons) by controlling the phase of the conduction angle of the control element. In other words, when the normally open switch R1-1 of the phase control circuit amIJ relay R1 is closed, the conduction phase advances and most of the current capacity of the power supply (19) is energized to the heater (2 people), and conversely, relay R1 normally closed switch R,
-t is closed, the conduction phase is delayed and the current capacity is 5
The configuration is such that the heater (two people) is energized at 0%. The compressor motor (IA) of the cooling device is connected to the power source a9 through the normally closed switch R1-8 of the relay RI and the cooling operation command switch SWC. The opening/closing of the cooling operation command switch SWC is controlled by the ice thickness pressure in a cooling thermostat circuit or in a cooling device that uses ice blocks for cooling.

In the above configuration, the Q output terminals of counters (3A) (4A) immediately after being reset by timer (8A) K are r
It is at LJ level and relay R1 is not energized. Therefore, if the relay R7 is energized by the hot water thermostat (9A) at this time because the normally closed switch R, - of the relay R1 is closed, the phase control circuit I will close the normally open switch of the relay R2. 50 of the current capacity through R,−,
% is energizing the heater (2 people). Then, a predetermined cooling operation command from the cooling device (switch SWC is set to 0N) is issued.
-j, the compressor motor (IA) is energized through the normally closed switch R1- of relay R8, and enters cooling operation.

In this state, keep the current flowing through the heater (2 people) low.
This is a cooling operation priority mode that allows cooling operation to be performed immediately if a cooling operation command is input. This cooling operation priority mode continues even when hot drinks or cold drinks are sold and the counters (3A) and (4A) count the number of sales for each, but the count value of the counter (3A) does not reach the planned number. When it reaches that point, it switches to water boiling priority mode. In other words, when the counter (3 people) counts the scheduled number and outputs the rHJ level to the Q output terminal, relay R1 is energized and the normally closed switch R1-1 is closed, causing the phase control circuit ■ to have almost all of its current capacity. The heaters (two persons) are energized, and the normally closed switch R1-3 of the relay R1 is opened to prevent the supply of electricity to the compressor motor (IA). Eventually, the number of cold drinks sold reaches the planned number and the counter (
When 4A) outputs a level at the Q output terminal, the counter (3 people) is reset, relay R4 is demagnetized, and the water heating priority mode is switched to the cooling operation priority mode.The water heating priority mode is switched to the cooling operation priority mode. Switching to the mode can also be achieved by a timer (8A), but it is performed by the earlier force.However, in the cooling operation mode, the timer (8A) switches to the counter (3A) as the unit time elapses.
(4A) Even if the IC reset signal is output, the cooling operation mode is not canceled because the relay R1 is not excited. In the cooling operation mode, when the counter (4A) first counts the scheduled number within a unit time, the counter (4 people) continues this mode by supplying a reset signal to the counter (3A).

As mentioned above, the control device of the vending machine in this example normally communicates with the heater (two people). By suppressing the Lt current to 50% of the current capacity of the power supply, it is possible to respond to cooling operation at any time. If the host beverage counter (3A) reaches the scheduled value earlier than the cold beverage counter (4A) within the unit time set by the timer (8A), it is assumed that hot beverages are sold frequently and the water temperature is Within a unit time, the current applied to the heater (two people) is switched to increase. In addition, when the cold beverage counter (4A) also reaches the expected value following the hot beverage counter (3 people) within the same unit time, it is assumed that cold drinks are also selling at a reasonable rate, and the current to the heater (2 people) is turned off again. This makes it possible to suppress the temperature and respond to cooling operation. According to such a control device for a vending machine, the current applied to the heaters (for two people) can be changed depending on the sales status of hot beverages.

(G) Effects of the Invention According to the present invention, the current applied to the heater can be changed depending on the sales status of hot drinks and cold drinks, so that the load current value of the vending machine can always be kept below a certain set value. . Therefore, in suppressing the load current value, priority can be accurately determined between cooling operation and water boiling, and control can be performed in accordance with the sales frequency of beverage types.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a diagram showing a specific configuration. (1)...Cooling device, (2)...Heater, (
3)...hot beverage counter, (4)...cold beverage counter, (5)...control circuit.

Claims (1)

[Claims] 1. In vending machines that sell both cold beverages cooled by a cooling device and hot beverages prepared using water boiled by a heater, the same as the hot beverage counter that counts the number of hot beverages sold within a unit time. A vending machine comprising a cold beverage counter that counts the number of cold beverages sold within a unit time, and a control circuit that determines the current value to be applied to the heater depending on which of the two counters reaches a predetermined value first. Control device.