JPH02165396A - Load control device for automatic vending machine - Google Patents

Abstract

PURPOSE:To suppress a load current at the time of turning on a power supply by dividing plural loads into the 1st load group to which current is supplied simultaneously with the ON of the power supply and the 2nd load group to which current is supplied through a delay circuit with a delay from the 1st load group. CONSTITUTION:Respective loads are divided into three load groups, i.e. the 1st to 3rd load groups 30 to 32. When a power supply switch is turned on, current is supplied only to the 1st load group 30, current is supplied to the 2nd load group 31 with the delay of a prescribed time from the 1st load group 30 and then current is supplied to the 3rd load groups 32 with the delay of a prescribed time from the 2nd group 31. Thus, the load current is supplied. Consequently, the load current at the time of turning on the power supply can be suppressed as compared with the constitution in which current is supplied to all loads simultaneously with power ON.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a load control device for a vending machine that drives a plurality of loads when the power is turned on.

(Prior Art) For example, in a vending machine that sells drinks such as juice, samples of a large number of sales products, for example, 16, to be displayed in a display section in front of the vending machine are each made of a translucent material. At the same time, a lamp is placed inside each of these samples,
It has been proposed to improve the display effect by illuminating each sample from the inside using these lamps.

Therefore, in such vending machines, the compressor of the cooling device for cooling the products and the heater for heating the products are directly connected to the commercial power source, and each of the above lamps is connected to a stable power source connected to the commercial power source. The compressor, heater, lamps, etc. are energized at the same time when the power switch is turned on.

(Problems to be Solved by the Invention) The above configuration has the disadvantage that a large amount of load current flows when the power is turned on, since each load is simultaneously energized and started at the same time as the power is turned on.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a load control device for a vending machine that drives a plurality of loads when the power is turned on and is capable of suppressing the load current when the power is turned on.

[Structure of the Invention] (Means for Solving the Problems) The present invention provides a load control device for a vending machine that drives a plurality of loads when the power is turned on. It is characterized in that it is divided into a first load group that is energized at the same time and a second load group that is energized later than the first load group via a delay circuit.

(Function) According to the above means, when the power is turned on, the first load group among the plurality of loads is first energized, and then the second load group is energized.
Since the first load group is energized after a predetermined time delay than the first load group, the load current is divided and all loads are energized at the same time as the power is turned on. load current can be suppressed.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

First, in FIG. 2 showing the front of the vending machine, 1 is the main body of the vending machine that sells drinks such as juice;
Reference numeral 2 denotes a door provided on the front side of the main body 1. On the front side of this door 2, there are two upper and lower display sections 4 each covered with a transparent cover 3. Sample 5 of 16 products for sale is on display. and,
Each of the specimens 5 is formed into a cylindrical shape from a translucent material, for example, a translucent plastic, and a lamp 6 made of a fluorescent lamp serving as a load is disposed inside each specimen.

7 is a selection button provided corresponding to each sample 5, 8 is a money slot, and 9 is a product takeout slot.

On the other hand, in FIG. 1 showing an electric circuit, 10 is a commercial power source, one end of which is connected to one bus bar 11a via a power switch 11, and the other end is directly connected to the other bus bar 11b. 13 is a compressor of a cooling device for cooling the sales products stored in the main body 1; 14 is a heater for heating the sales products;
The heater 14 is connected between both bus bars 12a and 12b. A first delay circuit 15 is connected in parallel with the compressor 13 and the heater 14, and energizes the relay coil 16 when a predetermined time has elapsed since power was applied. This relay coil 16 has one bus bar 12a.
The first relay 1 together with the relay switch 17 provided in
8, and in its energized state turns on the relay switch 17.

19 is a stabilized DC power supply circuit consisting of a switching regulator, and a relay switch 1 is connected to the bus bars 12a and 12b.
7. 20° 21 are both lines 22a and 22 connected to the secondary side of the stabilized DC power supply circuit 19.
a first and second inverter device connected in parallel to b, these first and second inverter device 20.21
Four lamps 6 are connected in parallel to the secondary side of the lamp.

A second delay circuit 23 is connected to the lines 22a and 22b, and energizes the relay coil 24 when a predetermined time has elapsed since the power was applied. This relay coil 24 constitutes a second relay 26 together with a relay switch 25 whose one end is connected to one line 22a, and turns on the relay switch 25 when the relay coil 24 is energized. Reference numeral 27°8 denotes the third and fourth inverter devices connected in parallel via the front J inverter 22B and 22BL relay race/r edge 25, and the two of these third and fourth inverter devices 27 and 28 are On the next side, 4a^I of the lamps 6 are connected in parallel. 29 is the line 22a, 2
A microcomputer as a load connected to 2b has the function of controlling the entire vending machine.

Therefore, each member 7. :I, the compressor 13 and heater 14 are connected to the first load group 30, the eight lamps 6 and the microcomputer 29 connected to the first and second inverter devices 20, 21 are connected to the second load group 31, The eight lamps 6 connected to the third and fourth inverter devices 27 and 28 are used as the third load 1 and 32, so in this case, the loads are the first and second loads. Second. and third load 7
! It is divided into three load groups of $30.31 and 32.

In the above configuration, when the power switch 11 is turned on, the first load group 30 is first energized and the compressor 13 and the heater 14 are driven at the same time as the power switch 11 is turned on. Then, via the first delay circuit 15, the relay switch 1 of the first relay 18 is activated after a predetermined time delay from the first load group 30.
7 is turned on, and based on this, the second load group 31 is energized and the microcomputer 29 is driven, and the first
And the eight lamps 6 connected to the second inverter device 20, 21 are turned on. After this, the relay switch 25 of the second relay 26 is turned on with a predetermined time delay after the second load group 31 via the second delay circuit 23, and based on this, the third load group 32 is energized. Then, the remaining eight lamps 6 connected to the third and fourth inverter devices 27 and 28 are turned on.

According to this embodiment, when the power switch 11 is turned on, only the first load group 30 is first energized, and then the second load group 31 is powered on for a predetermined time longer than the first load group 30. After that, the third load group 32 is energized with a predetermined time delay than the second load group 31, and the load current is divided, so that the power is turned on at the same time. Compared to a configuration in which all loads are energized, the load current when the power is turned on can be suppressed.

Further, according to the present embodiment, the load on the secondary side of the stabilized DC power supply circuit 19 is divided into the second load group 31 and the third load group 32, and the third negative 1. : Since the I group 32 is energized later than the second load group 31, the negative 6:I current flowing through the stabilized power supply circuit 19 is also divided. Therefore, there is an advantage that the capacity of the transformer included in the stabilized DC power supply port path 19 can be reduced, and the transformer can be made smaller.

[Effects of the Invention] As is clear from the above description, the present invention provides a load control device for a vending machine that drives a plurality of loads when the power is turned on. By dividing the load into the first load II, which is energized at the same time as the power is turned on, and the second load group, which is energized later than the first load group via a delay circuit, the load current can be divided, and the power is turned on. This has the excellent effect of suppressing the load current during operation.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, with FIG. 1 being an electric circuit diagram and FIG. 2 being a front view of the vending machine. In the drawing, 5 is a sample, 6 is a lamp (load), 10 is a commercial power supply, 11 is a power switch, and 13 is a compressor (load)
, 14 is a heater (load), 15 is a first delay circuit, 18
is the first relay, 23 is the second delay circuit, 26 is the second relay, 29 is the microcontroller (load), 30 is the first load group, 31 is the second load group, 32 is the third Indicates load group. Applicant: Toshiba Corporation Toshiba Audio/Video Engineering Co., Ltd. Figure 1

Claims (1)

[Claims] 1. In a device that drives a plurality of loads when the power is turned on, the plurality of loads are connected to a first load group that is energized at the same time as the power is turned on, and a first load group through a delay circuit.
A load control device for a vending machine, characterized in that the load control device is divided into a second load group that is energized later than the second load group.