KR900007008Y1 - Sewage circuit in automatic vending machine - Google Patents

Abstract

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Description

Automatic cleaning circuit of vending machine

1 is a conventional cleaning circuit diagram.

2 is an automatic cleaning circuit diagram of the present invention.

* Explanation of symbols for main parts of the drawings

10: coin mechanism 20: start signal input unit

30: sales preparation department 40: product selection and self-maintenance department

50: drive and control unit 60: timer control unit

70: electronic valve control unit 80: timer unit

81: timer 90: electronic drive unit

RY4: Timer control relay coil RY5: Solenoid valve control relay coil

C2: Condenser V: Solenoid valve for water supply

The present invention relates to an automatic cleaning circuit of a vending machine that automatically cleans a beverage dispensing path for extracting a beverage in an automatic vending machine for selling drinks such as coffee and milk.

Conventionally, as shown in FIG. 1, the cleaning switch SWT is connected to the water supply solenoid valve V in series so that the operator supplies the beverage raw material or checks the vending machine, As a result of press connection, AC power was applied to the solenoid valve V for water supply to drive the solenoid valve V for water supply, and water was supplied to the beverage discharge passage to clean the beverage discharge passage.

However, the conventional cleaning circuit for cleaning the beverage outlet by pressing the cleaning switch (SWT) as described above is a lot of trouble because the operator has to press the cleaning switch (SWT) one by one, and the operator for a long time If the discharge path is not cleaned, the raw material of the beverage is hardened in the beverage discharge path, so that the beverage is not sold smoothly and is very difficult to clean, and the raw material remaining in the beverage discharge path is decayed, which causes a very unsanitary problem.

Therefore, an object of the present invention is to provide an automatic cleaning circuit for cleaning the beverage discharge path by automatically driving the water supply solenoid valve after a certain time of selling the beverage.

Another object of the present invention is to provide an automatic cleaning circuit that stops the cleaning operation of the beverage outlet and sells the beverage immediately upon request of the beverage sale during the cleaning of the beverage outlet.

The present invention having this purpose drives the timer as the buyer inputs coins and outputs a price signal from the coin mechanism, and drives the water supply solenoid valve for a predetermined time as the set time of the timer elapses after the sale of the drink is completed. The discharge furnace will be cleaned.

As the buyer puts the coin in the state of cleaning the beverage outlet and the price signal is output from the coin mechanism, the driving of the water supply solenoid valve is immediately stopped to stop the washing operation of the beverage outlet and sell the beverage. .

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

2 is a detailed view showing an embodiment of the automatic cleaning circuit of the present invention, the sale start signal (S1) and the price signal (S2) of the coin mechanism 10 connected to the AC power source (AC) as shown therein start to sell Start-of-sale signal input unit 20 consisting of relay switch RY31 and diode D1, resistor R1, capacitor C1, and sales preparation unit 30 and diode D2 composed of sales ready relay coil RY1. , Product selection consisting of selection switch (SW), push indication lamp (LP), selection relay coil (RY2), sales start relay switch (RY32), sales preparation relay switch (RY11) and selection relay switch (RY2, RY22); A driving and control unit 50 each of which is connected to the magnetic holding unit 40 in a seal, and constituted by a selection relay switch RY23, a diode D3, a beverage discharging driving circuit 51 and a driving control circuit 52; Timer Controlled Relay Switch (RY41), Timer Controlled Relay Coil (RY4), Timer Relay Switch (RY61) and Sales Ready Relay Switch ( Timer control unit 60 composed of RY12, timer control relay switch RY43, timer 81 composed of timer 81 and resistor R3, solenoid valve control relay switch RT51 and solenoid valve for water supply The solenoid valve driving unit 90 composed of (V) is connected together and connected to the AC power source, and the resistor R2, the capacitor C2, the diode D4, the timer control relay switch RY42, and the solenoid control relay The solenoid valve control unit 70 composed of the coil RY5 was connected to the timer control relay coil RY4 of the timer control unit 60.

According to the present invention configured as described above, when a buyer inputs coins according to a product to be purchased, the price signal S2 is output from the coin mechanism 10 and charged to the capacitor C1 through the diode D1 and the resistor R1 and sold at the same time. The ready relay coil RY1 is excited, and the push display lamp LP is turned on through the diode D2 and the select relay coil RT2. Therefore, since the relay switches RY11 and RY12 are connected to the sales ready relay coil RY1, the timer control relay coil RY4 is excited, and the relay switch RY41 is connected as the relay coil RY4 is excited. The timer control relay coil RY4 is self-holding, the relay switch RY2 is opened and the relay switch RY43 is connected to the contact point a so that the timer 81 is supplied with power to start driving the timer 81. In the capacitor C2, the AC power source AC is charged in the capacitor C2 through the timer control relay switch RY41, the timer relay switch RY61, the resistor R2, and the diode D4.

When the purchaser presses the selection switch SW in such a state, the price signal S2 output from the coin mechanism 10 passes through the selection relay coil RY2 and the selection switch SW through the diode D2. As it flows, the selection relay coil RY2 is excited, and the selection relay switches RY2-RY22 are connected to self-hold the selection relay coil RY2.

On the other hand, the power supply is supplied to the beverage dispensing drive unit 51 and the drive control unit 52 by the connection of the relay switch RY23, and at the same time, the start start relay RY3 operates to operate the coin mechanism through the start start relay switch RY31. The selling start signal S1 is applied to 10, and the relay switch RT32 is connected to supply power so that the selected relay coil RY2 is self-holding.

Then, when the selling start signal S1 is applied to the coin mechanism 10, the coin mechanism 10 immediately stops outputting the price signal S2, and the sales preparation relay coil RY1 is charged with the charging power of the capacitor C1. If the charging power supply of the capacitor C1 is discharged after a certain time, the ready relay coil RY1 is released, so that the relay switches RY11 and RY12 are opened.

When the sale of the drink is finished in this state, the sales start relay coil RY3 is released and the relay switches RY31 and RY32 are opened, and the sale start signal S1 to the coin mechanism 10 in accordance with the opening of the switch RY31. ) Is blocked, the power of the selected relay coil (RY2) is cut off according to the opening of the relay switch (RY32), and the selected relay coil (RY2) is disassembled, and the relay switches (RY21-RY23) are opened and stand by. Becomes

Since the timer control relay coil RY4 is self-holding by the relay switch RY41, the timer unit RY30 continues to operate by the connection of the relay switch RY4. When the timer relay RY6 of the timer unit 80 is triggered once.

At this time, the relay switch RY61 is opened and then connected again. The moment the relay switch RY61 is connected, the timer control relay coil RY4 is dismantled, the relay switch RY41 is opened, and the relay switch RY4 is connected. Since the voltage charged in the capacitor C2 is applied to the solenoid valve control relay coil RY5 through the relay switch SK2, the relay coil RY5 is excited, and the relay switch RY43 is connected to the contact point b. The power of the timer unit 80 is cut off, and the residual current is discharged through the resistor R3.

Then, the relay switch RY51 is connected to the excitation of the solenoid valve control relay coil RY5 to operate the water supply solenoid valve V, so that the cleaning of the sound flow discharge starts, and a certain time has elapsed. When the charging power supply is discharged, the solenoid valve control relay coil RY5 is dismantled, the relay switch RY51 is opened, the water supply solenoid valve V is stopped, and the cleaning of the beverage outlet is finished.

On the other hand, if the sale is performed during the cleaning operation of the beverage dispensing furnace, the price signal S2 is immediately sent from the coin mechanism 10, the ready-sell relay coil RY1 is excited, and the relay switch RY12 is connected, thereby controlling the timer. The relay coil RY4 is excited, the relay switch SY42 is opened, the solenoid valve control relay coil RY5 is dismantled, and the relay switch RY51 is opened. Therefore, the cleaning operation to the beverage dispensing furnace is immediately stopped. Normal sales are carried out.

As described in detail above, the present invention can automatically clean the beverage dispensing furnace after a certain time after the start of sale, thereby preventing the raw material of the beverage from solidifying or decaying in the beverage dispensing furnace as well as the conventional unsanitary. Eliminating phosphorus can improve the consumer's confidence that the beverage is hygienic.

Claims (1)

In a vending machine composed of a coin mechanism 10, a sales start signal input unit 20, a sales preparation unit 30, a product selection and self-holding unit 40, a drive and a control unit 50, and the like, each time a beverage is sold. When the timer 81 is driven by driving the timer control relay coil RY4 by self-exciting and continuing to drive the timer control relay coil RY4, the timer 81 is driven by the timer control relay coil RY4. The solenoid valve control relay coil RY5 is excited by a timer unit 80 for discharging the timer control relay coil RY4 and a charging power supply of the conde line C2 when the timer control relay coil RY4 is dismantled. The solenoid valve control part 70 and the solenoid valve drive part 90 which drive the water supply solenoid valve V according to the excitation of the said solenoid valve control relay coil RY5 and wash | clean a beverage discharge path are characterized by the above-mentioned. Automatic cleaning circuit of vending machine.