JP2005293277A - Beverage supplying device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beverage supplying device capable of positively stopping a passage of a beverage to a valve when stopping a beverage supplying action of the beverage supplying device. <P>SOLUTION: The beverage supplying device is characterized by that it includes a sales setting switch closing only when operated, a timer for registering the time, a control part for outputting a control signal of one logic level on the basis of a switch operation signal of a predetermined logic level generated when the sales setting switch is closed, and outputting a control signal of another logic level on the basis of a time register output when the timer registers a predetermined time, and a relay switch for valve control maintaining a connected state following excitation between a predetermined voltage and a relay coil for the valve on the basis of the control signal of one logic level, and disconnecting the predetermined voltage and the relay coil for the valve on the basis of the control signal of the other logic level. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a beverage supply apparatus.

  In general, a beverage supply device (for example, a beverage dispenser, cup-type vending machine) cooks beverages by diluting beverage ingredients (concentrated liquid ingredients, powder ingredients, etc.) with a diluent such as water or carbonated water at a predetermined ratio. doing. For example, in a beverage dispenser, in order to make the predetermined ratio more appropriate, a flow rate adjusting valve (for example, a flow regulator, a flow meter) is provided in the raw material supply line and the diluent supply line together with a valve that is electrically opened and closed. The raw material and the flow rate of the diluent were mixed in the cup while being controlled.

  FIG. 12 shows an example of a raw material supply line and a diluent supply line of a beverage supply apparatus. The tap water is supplied to the first distributor 13A through the pipe P1 and the water filter 11 and the water inlet valve 12. The tap water supplied to the first distributor 13 </ b> A is branched into two here: the water tank 14 side and the coil unit 15 side disposed in the water in the water tank 14. The tap water supplied to the water tank 14 side flows into the water tank 14 through the water supply valve 16 through the pipe P2. The tap water supplied to the coil unit 15 side is pressurized by the pressurizing pump 17 through the pipe P3, and supplied to the second distributor 13B via the coil unit 15. The tap water supplied to the second distributor 13B includes the multi-valve 18 side, the carbonator 19 side that is disposed in the cooling water of the water tank 14 and produces carbonated water, the one bellista pump 20A side, and the other side. It branches into four with the bellista pump 20B side. The water supplied to the multi-valve 18 side passes through the pipe P4, flows into the multi-valve 18 through the flow rate adjustment valve 21 and the cold water valve 22, and is discharged to the cup C as cold water. The water supplied to the carbonator 19 side passes through the pipe P5 and is supplied to the carbonator 19 through the carbonator water supply valve 23. The carbon dioxide gas from the carbon dioxide gas cylinder 24 is taken into carbonated water, and the carbonated water is supplied to the flow rate adjusting valve 25, It flows into the multi-valve 18 through the coil unit 15 and the carbonated water valve 26 and is discharged to the cup C. The water supplied to the verista pumps 20A and 20B side passes through the pipes P6 and P7, passes through the flow rate adjustment valves 27A and 27B, and passes through the dilution water valves 20a and 20b in the verista pumps 20A and 20B to the cup C as dilution water. Discharged. On the other hand, the raw materials I, II, III, and IV pumped from the raw material tanks 28A, 28B, 28C, and 28D by the carbon dioxide gas from the carbon dioxide cylinder 24 are multiplied through the coil unit 15 and the raw material valves 29A, 29B, 29C, and 29D. It flows into the valve 18 and is discharged into the cup C.

  As described above, each of the above-described valves is provided in the raw material supply line and the diluent supply line, and the corresponding valves are opened and closed by an electrical signal from a control unit provided to control the beverage supply device. Is going. Specifically, an electromagnetic relay relay switch (open when not excited) is connected to each valve, and an electromagnetic relay coil (hereinafter referred to as a relay) corresponding to the electromagnetic relay relay switch is connected to the control unit. Is called a coil). When the store opens, for example, the administrator of the beverage supply device turns on a switch that enables the beverage supply device to supply beverage, and an output signal is supplied from the control unit, whereby a predetermined voltage is applied to the relay coil. When applied, the relay coil is excited. Then, when the relay switch corresponding to the relay coil is closed or switched, for example, a voltage is applied to the valve (for example, 100 V). Therefore, the valve can be electrically controlled, and the valve can be opened or closed by a signal for opening the valve from the control unit or a signal for closing the valve.

  For example, when closing a store, the entire beverage supply device is not turned off so that the beverage supply device can supply the beverage immediately after the next store opening. Instead, the application of voltage to the relay coil is stopped and the excitation state is released by turning off the above-described switch. Then, the relay switch corresponding to the relay coil is opened so that no voltage is applied to the valve. That is, the leakage of the diluted solution and the raw material (hereinafter referred to as water leakage) is prevented by closing the valve. Further, for example, since the voltage to the circuit for cooling the water in the water tank 14 is continuously applied, the cooling water can be supplied immediately at the next store opening.

As described above, whether or not to allow the beverage supply device to supply a beverage at the time of opening or closing a store is performed by turning on or off a switch or the like by an administrator of the beverage supply device.
Japanese Patent Laid-Open No. 10-203595

  Therefore, when the manager of the beverage supply device stops the operation of the beverage supply device when closing the store, there is an annoyance that the switch must be turned off. In addition, when the store is closed, the manager of the beverage supply device may forget to turn off the switch. Furthermore, even if the administrator of the beverage supply device turns off the switch, there is a possibility that the voltage to the valve is not cut off due to the failure of the switch, and the valve remains open. For this reason, due to an abnormality of the control unit, the control unit may transmit a signal permitting the beverage to pass through the valve, and a water leakage accident may occur. Moreover, when there is no person in the vicinity of the beverage supply device in which the water leak has occurred, the processing for the water leak is delayed, and there is a risk that the damage will be significant.

  Then, in this invention, when stopping the drink supply operation | movement of a drink supply apparatus, it aims at providing the drink supply apparatus which can stop the passage of the drink to a valve reliably.

The invention for solving the above-described problems includes a valve for allowing beverage in a pipe to pass through, a valve relay switch connected to the valve, a valve relay coil connected to a predetermined voltage, and the valve relay coil. A beverage supply device that, when energized, closes the valve relay switch and allows the beverage to pass through the valve, a sales setting switch that closes only when operated, a timer that counts time, and the sales setting Based on a switch operation signal of a predetermined logic level generated when the switch is closed, the control signal of one logic level is output, and based on the clock output when the timer clocks a predetermined time, A control unit that outputs a control signal of the other logic level, and the predetermined voltage and the valve relay based on the control signal of one logic level. A valve control relay switch that maintains a state of being connected to the coil in connection with excitation, and that disconnects between the predetermined voltage and the valve relay coil based on the control signal of the other logic level; It is provided with.
According to this beverage supply device, the excitation of the valve relay coil is released based on the control signal of the other logic level at the time determined in advance by the timer, so that the beverage cannot pass through the valve. .

A valve for passing a beverage in the pipe, a valve relay switch connected to the valve, and a valve relay coil connected to a predetermined voltage, and when the valve relay coil is excited, A beverage supply device in which a valve relay switch is closed so that the beverage can pass through the valve, a sales setting switch that is closed only when operated, and a switch that is at one logic level when the sales setting switch is closed An operation signal is input, and each time the switch operation signal is input, a control unit that alternately outputs a control signal of one logical level or the other logical level, and based on the control signal of one logical level, Based on the control signal of the other logic level, keeping a state where the predetermined voltage and the valve relay coil are connected with excitation. Characterized by comprising a relay switch valve control for blocking between the predetermined voltage and the relay coil valve.
According to this beverage supply device, the excitation of the valve relay coil is released based on the control signal of the other logic level, and the beverage cannot pass through the valve.

A valve for allowing beverage in the pipe to pass through, a valve relay switch connected to the valve, and a valve relay coil connected to the first voltage, and when the valve relay coil is excited, A beverage supply device in which the valve relay switch is closed so that the beverage can pass through the valve, the sales setting switch that is closed only when operated, the first voltage and the second voltage (<the first voltage) A first relay switch that is connected in series with the sales setting switch and opened with excitation, a second relay switch that is connected in parallel with the sales setting switch and closes with excitation, the first voltage, and the A third relay switch connected between the valve relay coil and closed at the same timing as the second relay switch upon excitation, and a timer for measuring time A control unit to which a switch operation signal having one logic level is input when the sales setting switch is closed, and the sales setting is performed when the second relay switch and the third relay switch are open. When the switch is closed, regardless of the control unit, the second relay switch and the third relay switch are closed, the beverage passes through the valve, and the second relay switch and the third relay switch are closed. The first relay switch opens upon excitation based on the control signal of the control unit that has detected that the timer has timed a predetermined time, and the second relay switch and the second relay switch 3 The relay switch is opened, and the beverage cannot pass through the valve.
According to this beverage supply device, the second relay switch and the third relay switch are opened at the time determined in advance by the timer, so that the excitation of the valve relay coil is released and the beverage does not pass through the valve. It becomes possible.

A valve for passing a beverage in the pipe, a valve relay switch connected to the valve, and a valve relay coil connected to the first voltage, and when the valve relay coil is excited, A beverage supply device in which the valve relay switch is closed so that the beverage can pass through the valve, the sales setting switch that is closed only when operated, the first voltage and the second voltage (<the first voltage) A first relay switch that is connected in series with the sales setting switch and opened with excitation, a second relay switch that is connected in parallel with the sales setting switch and closes with excitation, the first voltage, and the A third relay switch that is connected between the valve relay coil and closes at the same timing as the second relay switch with excitation; And a control unit to which a switch operation signal that becomes one of the logic levels is input, and the sales setting switch is closed from a state in which the second relay switch and the third relay switch are open. Regardless of the control unit, the second relay switch and the third relay switch are closed, the beverage can pass through the valve, and the second relay switch and the third relay switch are closed. When the sales setting switch is closed, based on the control signal of the control unit to which the switch operation signal is input, the first relay switch opens with excitation and the second relay switch and the third relay When the switch is opened, the beverage cannot pass through the valve.
According to this beverage supply device, when the second relay switch and the third relay switch are opened, the excitation of the valve relay coil is released, and the beverage cannot pass through the valve.

The beverage supply apparatus further includes a counter that counts the input of the switch operation signal to the control unit, and the counter operates when the second relay switch and the third relay switch are open. The control unit outputs a control signal for opening the first relay switch with excitation when the counter counts the even number of switch operation signals. .
According to this beverage supply device, the second relay switch and the third relay switch are more reliably opened, the excitation of the valve relay coil is released, and the beverage cannot pass through the valve.

A valve for allowing beverage in the pipe to pass through, a valve relay switch connected to the valve, and a valve relay coil connected to the first voltage, and when the valve relay coil is excited, A beverage supply device in which the valve relay switch is closed and the beverage is allowed to pass through the valve, the sales switch closing only when operated, the first voltage and the second voltage (<the first voltage) A first relay switch that is connected in series with the sales switch and opens with excitation, and a sales stop switch that closes only when operated and opens the first relay switch with excitation, A second relay switch that is connected in parallel with the sales switch and closes with excitation, and is connected between the first voltage and the valve relay coil. A third relay switch that closes at the same timing as the switch, and the second relay switch and the second relay switch when the second switch and the third relay switch are open, When the 3 relay switch is closed and the beverage can pass through the valve, and the sales stop switch is closed from the state where the second relay switch and the third relay switch are closed, the first relay switch Is opened with excitation, and the second relay switch and the third relay switch are opened, so that the beverage cannot pass through the valve.
According to this beverage supply device, when the second relay switch and the third relay switch are opened, the excitation of the valve relay coil is released, and the beverage cannot pass through the valve.

A valve for passing a beverage in the pipe, a valve relay switch connected to the valve, and a valve relay coil connected to a predetermined voltage, and when the valve relay coil is excited, A beverage supply device in which a valve relay switch is closed so that the beverage can pass through the valve, the valve control relay switch being connected between the predetermined voltage and the valve relay coil and closing upon excitation. A human body sensor that detects a human body, a counting unit that counts a continuation period in which the human body sensor does not detect a human body, and when a continuation period that the counting unit counts exceeds a predetermined period, And a control unit that outputs a control signal for opening the valve control relay switch when released.
According to this beverage supply device, when the period when there is no person in the vicinity exceeds a predetermined period, the second relay switch and the third relay switch are opened to release the excitation of the valve relay coil, It becomes impossible for the beverage to pass through the valve.

  ADVANTAGE OF THE INVENTION According to this invention, when stopping the drink supply operation | movement of a drink supply apparatus, it becomes possible to provide the drink supply apparatus which can stop the passage of the drink to a valve reliably.

At least the following matters will become apparent from the description of this specification and the accompanying drawings.
In each embodiment, the beverage supply device is a beverage dispenser installed in, for example, a store.

<< First Embodiment >>
=== General Configuration of Beverage Dispenser ===
A schematic configuration of a beverage dispenser to which the present invention is applied will be described with reference to FIGS. 1 and 12. FIG. 1 is a circuit block diagram showing a schematic configuration of the present embodiment of a beverage dispenser.

  In the beverage dispenser, a beverage supply operation is executed by a microcomputer 33A (control unit), a sales control unit described later, and a sales mechanism unit shown in FIG.

  The microcomputer 33A controls the sales mechanism unit via the sales control unit. Specifically, the microcomputer 33A includes a CPU 1, a ROM 2, a RAM 3, and a timer 5. The CPU 1 has an address counter (not shown) that specifies the address of the ROM 2, a program logic array (not shown) that decodes program data read from the ROM 2, an arithmetic logic unit (not shown) that performs logical operations, and temporary storage of operation data. A register (not shown) or the like. The ROM 2 stores program data for controlling the sales mechanism unit in advance. Moreover, the information (for example, cooking information etc.) of a drink dispenser is memorize | stored. The ROM 2 includes a mask ROM for printing and fixing data in a manufacturing process, an EPROM capable of repeatedly writing and reading data by erasing the data with ultraviolet light, and an EEPROM (including a flash ROM) capable of repeatedly writing and reading data by electrically erasing the data. ) Or the like. The RAM 3 writes or reads work data logically calculated by the CPU 1 and various data (for example, sales data information) transmitted from the sales control unit. Note that the RAM 3 may be composed of the above-described EEPROM or a volatile memory element such as SRAM. When the RAM 3 is composed of a volatile storage element such as SRAM, the data in the RAM 3 is held by a backup power source. The timer 5 measures time. As will be described later, when the stop time of the beverage supply of the beverage dispenser is set by the setting machine 8, the CPU 1 stores the stop time in the RAM 3. Then, the CPU 1 compares the time measured by the timer 5 with the stop time. In addition, when the microcomputer 33A receives a pressing signal from the sales button 4, the microcomputer 33A transmits a control signal to the sales mechanism unit so as to open a valve 12 described later and cook the beverage. In the present embodiment, for convenience of explanation, the sales button 4 is provided so as to correspond to the valve 12, but the sales button is provided according to the number of types of beverage supplied by the beverage dispenser.

  Based on the control from the microcomputer 33A, the sales mechanism section cooks the beverage by diluting each diluted solution and each raw material at a predetermined ratio. The sales mechanism section is provided with a plurality of valves as shown in FIG. In the present embodiment, for convenience of explanation, one of the valves shown in FIG. 12 (for example, FIG. 12, a water inlet valve; hereinafter, described as the valve 12) will be described. The voltage is applied or released in the same manner for the other valves. Therefore, explanation of other valves is omitted. The valve 12 is connected in series with a relay switch 37D (valve relay switch) of an electromagnetic relay. The relay switch 37D is a switch that closes when a later-described relay coil 36D (valve relay coil) is excited (a relay switch that opens when such a relay coil is not excited is referred to as a normally open switch, N / O). Further, when the relay switch 37D is closed, a voltage (for example, 100 V) is applied to the valve 12.

  The sales control unit controls the sales mechanism unit based on a control signal from the microcomputer 33A. Hereinafter, the sales control unit will be described. One end of a relay switch 37G (valve control relay switch) of the electromagnetic relay is a switch connected to the contact H when the relay coil 36A is excited and connected to the contact G when the relay coil 36A is not excited. The other end of the relay switch 37G is connected to the power source V1 (first voltage). One end of the relay switch 37H of the electromagnetic relay is a switch connected to the contact J when the relay coil 36A is excited and connected to the contact I when the relay coil 36A is not excited. The other end of the relay switch 37H is grounded (0V). Further, the contact J is connected to the other end of the relay coil 36A. One end of the relay coil 36A is connected to the collector of the pnp transistor 42, and the other end is connected to one end of the push switch 34A via the diode 38D. The pnp transistor 42 has a base connected to a B terminal provided in the microcomputer 33A via a resistor 39D and a driver 35A, an emitter connected to a power source V3 (for example, 24V), and a collector connected to one end of the relay coil 36A. ing. A resistor 39E is connected between the emitter base. One end of a push switch 34A (sales setting switch) that is closed only during a pressed (operated) period is connected to an A terminal provided in the microcomputer 33A via a diode 38C, and the other end is grounded. That is, when the push switch 34A is closed, a low level is input to the A terminal of the microcomputer 33A. The relay coil 36A is excited when a current flows through the collector when the base of the pnp transistor 42 becomes a low level. That is, the relay coil 36A is excited by having one end connected to the power source V3 (approximately 24V) and the other end grounded. The relay switch 37D is closed as the relay coil 36D is excited. One end of the relay coil 36D is connected to the contact H, and the other end is connected to a D terminal provided in the microcomputer 33A via a driver 35D. The relay coil 36D is excited when the output of the driver 35D becomes low level when a high level control signal is output from the D terminal of the microcomputer 33A. That is, one end of the relay coil 36D is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. The driver 35A includes, for example, an npn transistor 41, a resistor 39B connected to the base, and a resistor 39C between the emitter base and the collector connected to the power source V2, as shown in the broken line. The driver 35D is configured similarly to the driver 35A.

=== Specific Operation of Beverage Dispenser ===
With reference to FIG. 1 and FIG. 12, a specific operation as to whether or not to allow a beverage to pass through a valve in a beverage dispenser to which the present invention is applied will be described. In the present embodiment, the operation from the state in which the relay switch 37D of the beverage dispenser is open will be described.

  When the push switch 34A is closed, a low level is input to the A terminal of the microcomputer 33A. Upon receiving the low level, the microcomputer 33A outputs a high level control signal from the B terminal to the transistor 35A. When the high level control signal is output, the output from the driver 35A is at the low level. Therefore, when the base potential of the pnp transistor 42 is lowered, the relay coil 36A is excited by a current flowing from the power source V3 to the pnp transistor 42, the relay coil 36A, the diode 38D, and the push switch 34A. That is, the relay coil 36A is excited by having one end connected to the power source V3 (approximately 24V) and the other end grounded. As relay coil 36A is excited, one end of relay switch 37G is connected to contact H, and one end of relay switch 37H is connected to contact J. Thereafter, even if the push switch 34A is opened, the current from the power source V3 continues to flow through the pnp transistor 42, the relay coil 36A, and the relay switch 37H, so that the relay coil 36A remains energized and the relay switch 37G has the contact H. The relay switch 37H remains connected to the contact J. Therefore, that state is held.

  When the sales button 4 is pressed, the microcomputer 33A receives the press signal and outputs a high-level control signal from the D terminal to the driver 35D. The relay coil 36 </ b> D is excited when the output of the driver 35 </ b> D becomes low level and the relay switch 37 </ b> G is connected to the contact H when the high level control signal is output. That is, the relay coil 36 </ b> D is excited by flowing a current when one end is connected to the power source V <b> 1 and the other end is grounded. As the relay coil 36D is excited, the relay switch 37D is closed. When the relay switch 37D is closed, a voltage (for example, 100 V) is applied to the valve 12. That is, the beverage dispenser can pass the beverage through the valve.

  Thereafter, when the CPU 1 provided in the microcomputer 33A determines that the beverage supply stop time of the beverage dispenser stored in the RAM 3 and the time measured by the timer 5 coincided with each other, which is determined in advance by the setting machine 8. The low level control signal is output from the B terminal. When the low-level control signal is output, the output of the driver 35A becomes high level. The pnp transistor 42 is turned off when its base potential rises, and the current from the power source V3 does not flow in the relay coil 36A, and the excitation is released. As the excitation of the relay coil 36A is released, the relay switch 37G is connected to the contact G and the relay switch 37H is connected to the contact I. When the relay switch 37G is connected to the contact point G, the current from the power source V1 does not flow through the relay coil 36D. Since the current no longer flows through the relay coil 36D, the excitation of the relay coil 36D is released. The relay switch 37D opens with the release of the excitation of the relay coil 36D. When the relay switch 37D is opened, no voltage is applied to the valve 12. That is, the beverage dispenser cannot pass the beverage through the valve.

  According to this embodiment, when no voltage is applied to the valve 12 at the beverage supply stop time determined in advance by the setting machine 8, it becomes impossible for the beverage to pass through the valve. It becomes possible to prevent a leakage accident.

<< Second Embodiment >>
=== General Configuration of Beverage Dispenser ===
A schematic configuration of a beverage dispenser to which the present invention is applied will be described with reference to FIGS. FIG. 2 is a circuit block diagram showing a schematic configuration of the present embodiment of the beverage dispenser.

In the beverage dispenser, a beverage supply operation is executed by the microcomputer 33B (control unit), a sales control unit described later, and a sales mechanism unit shown in FIG.
The microcomputer 33B controls the sales mechanism unit via the sales control unit. Specifically, the microcomputer 33B includes a CPU 1, a ROM 2, and a RAM 3. The CPU1, ROM2, and RAM3 are the same as those in the first embodiment.

The sales mechanism unit is as in the first embodiment. In the present embodiment, for convenience of explanation, one of the valves shown in FIG. 12 (for example, FIG. 12, a water inlet valve; hereinafter, described as the valve 12) will be described. The voltage is applied or released in the same manner for the other valves. Therefore, explanation of other valves is omitted.
The sales control unit is as in the first embodiment.

=== Specific Operation of Beverage Dispenser ===
With reference to FIGS. 2 and 12, a specific operation as to whether or not to allow a beverage to pass through a valve in a beverage dispenser to which the present invention is applied will be described. In the present embodiment, the operation from the state in which the relay switch 37D of the beverage dispenser is open will be described.

  When the push switch 34A is closed, a low level is input to the A terminal of the microcomputer 33B. Upon receiving the low level, the microcomputer 33B outputs a high level control signal from the B terminal to the transistor 35A. When the high level control signal is output, the output from the driver 35A is at the low level. The pnp transistor 42 is turned on when its base potential is lowered, and the relay coil 36A is excited by a current flowing from the power source V3 to the pnp transistor 42, the relay coil 36A, the diode 38D, and the push switch 34A. That is, the relay coil 36A is excited by having one end connected to the power source V3 (approximately 24V) and the other end grounded. As relay coil 36A is excited, one end of relay switch 37G is connected to contact H, and one end of relay switch 37H is connected to contact J. Thereafter, even if the push switch 34A is opened, the current from the power source V3 continues to flow through the pnp transistor 42, the relay coil 36A, and the relay switch 37H, so that the relay coil 36A remains energized and the relay switch 37G has the contact H. The relay switch 37H remains connected to the contact J. Therefore, that state is held.

  When the sales button 4 is pressed, the microcomputer 33B receives the press signal and outputs a high-level control signal from the D terminal to the driver 35D. The relay coil 36 </ b> D is excited when the output of the driver 35 </ b> D becomes low level and the relay switch 37 </ b> G is connected to the contact H when the high level control signal is output. That is, the relay coil 36 </ b> D is excited by flowing a current when one end is connected to the power source V <b> 1 and the other end is grounded. As the relay coil 36D is excited, the relay switch 37D is closed. When the relay switch 37D is closed, a voltage (for example, 100 V) is applied to the valve 12. That is, the beverage dispenser can pass the beverage through the valve.

  Thereafter, when the push switch 34A is closed again, a low level is input again to the A terminal of the microcomputer 33B. Upon receiving the low level, the microcomputer 33B outputs a low level control signal from the B terminal. When the low-level control signal is output, the output of the driver 35A becomes high level. The pnp transistor 42 is turned off when its base potential rises, and the current from the power source V3 does not flow in the relay coil 36A, and the excitation is released. As the excitation of the relay coil 36A is released, the relay switch 37G is connected to the contact G and the relay switch 37H is connected to the contact I. When the relay switch 37G is connected to the contact point G, the current from the power source V1 does not flow through the relay coil 36D. Since the current no longer flows through the relay coil 36D, the excitation of the relay coil 36D is released. The relay switch 37D opens with the release of the excitation of the relay coil 36D. When the relay switch 37D is opened, no voltage is applied to the valve 12. That is, the beverage dispenser cannot pass the beverage through the valve.

  According to this embodiment, the voltage is not applied to the valve 12 by one push switch 34A, it becomes impossible for the beverage to pass through the valve, and it is possible to prevent a water leak accident due to the beverage leaking.

<< Third Embodiment >>
=== General Configuration of Beverage Dispenser ===
A schematic configuration of a beverage dispenser to which the present invention is applied will be described with reference to FIGS. 3 and 12. FIG. 3 is a circuit block diagram showing a schematic configuration of the present embodiment of the beverage dispenser.

  In the beverage dispenser, a beverage supply operation is executed by a microcomputer 33C (control unit), a sales control unit described later, and a sales mechanism unit shown in FIG.

  The microcomputer 33C controls the sales mechanism unit via the sales control unit. Specifically, the microcomputer 33 </ b> C includes a CPU 1, a ROM 2, a RAM 3, and a timer 5. The CPU1, ROM2, and RAM3 are the same as those in the first embodiment. The timer 5 measures time. As will be described later, when the stop time of the beverage supply of the beverage dispenser is set by the setting machine 8, the CPU 1 stores the stop time in the RAM 3. Then, the CPU 1 compares the time measured by the timer 5 with the stop time. In addition, when the microcomputer 33C receives a pressing signal from the sales button 4, the microcomputer 33C transmits a control signal to the sales mechanism unit to open a valve 12 described later and cook the beverage. In the present embodiment, for convenience of explanation, the sales button 4 is provided so as to correspond to the valve 12, but the sales button is provided according to the number of types of beverage supplied by the beverage dispenser.

  The sales mechanism is as in the first embodiment. In the present embodiment, for convenience of explanation, one of the valves shown in FIG. 12 (for example, FIG. 12, a water inlet valve; hereinafter, described as the valve 12) will be described. The voltage is applied or released in the same manner for the other valves. Therefore, explanation of other valves is omitted.

  The sales control unit controls the sales mechanism unit based on a control signal from the microcomputer 33C. Hereinafter, the sales control unit will be described. The relay switch 37A (first relay switch) of the electromagnetic relay is a switch that opens when the relay coil 36B is excited (a relay switch that is closed when such a relay coil is not excited is referred to as a normally closed switch). , Described as N · C). The relay switches 37B (second relay switch) and 37C (third relay switch) of the electromagnetic relay are switches that close as the relay coil 36C is excited. One end of the relay coil 36B is connected to a power source V1 (first voltage, for example, 24V), and the other end is connected to a B terminal provided in the microcomputer 33C via a driver 35B. The relay coil 36B is excited when the output of the driver 35B becomes low level when a high level control signal is output from the B terminal of the microcomputer 33C. That is, one end of the relay coil 36B is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. One end of a push switch 34B (sales setting switch) that closes only during a pressed (operated) period is connected to a power source V4 via a diode 38B and a resistor 39A, and is connected to a C terminal provided in the microcomputer 33C. The other end is grounded. That is, when the push switch 34B is closed, the voltage input to the C terminal of the microcomputer 33C changes (falls) from the high level to the low level. The relay switch 37A, the relay coil 36C, the diode 38A, and the push switch 34B are connected in series between the power supply V1 and the ground. The relay switch 37B is connected in parallel with the diode 38A and the push switch 34B. One end of the relay switch 37C is connected to the power source V1. The relay switch 37D is closed as the relay coil 36D is excited. One end of the relay coil 36D is connected to the other end of the relay switch 37C, and the other end is connected to a D terminal provided in the microcomputer 33C via a driver 35D. The relay coil 36D is excited when the output of the driver 35D becomes low level when a high level control signal is output from the D terminal of the microcomputer 33C. That is, one end of the relay coil 36D is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. The driver 35B is composed of, for example, an npn transistor 41, a resistor 39B connected to the base, and a resistor 39C between the emitter and base, and the collector is connected to the power source V2, as shown inside the broken line in FIG. The second voltage is ground.

=== Specific Operation of Beverage Dispenser ===
With reference to FIG. 3 to FIG. 5 and FIG. 12, a specific operation regarding whether or not to allow a beverage to pass through a valve in the beverage dispenser to which the present invention is applied will be described. FIG. 4 is a flowchart showing the operation of whether or not the beverage dispenser allows the beverage to pass through the valve. FIG. 5 is a timing chart showing whether or not the beverage dispenser allows the beverage to pass through the valve. In FIG. 5, the push switch 34B is shown at a high level when the push switch 34B is closed, and the relay switches 37B, 37C and 37A are shown at a high level when the switch is closed. . In this embodiment, the operation from the state in which the relay switch 37D of the beverage dispenser is open (that is, the unsaleable state (FIG. 4, S1)) will be described.

  When the push switch 34B is closed (FIG. 4, S2, YES), the voltage input to the C terminal of the microcomputer 33C changes (falls) from the high level to the low level (see T1, FIG. 5). Since the push switch 34B is closed, a current flows from the power source V1 through the relay switch 37A to the relay coil 36C and the diode 38A. The relay coil 36C is excited by a current flowing, and the relay switches 37B and 37C are closed (see T1 in FIG. 5). After that, even if the push switch 34B is opened, the current from the power source V1 continues to flow through the relay switch 37B, so that the relay coil 36C remains excited and the relay switches 37B and 37C remain closed (FIG. 5, T1 to T3). Therefore, that state is held.

  When the sales button 4 is pressed, the microcomputer 33C receives the press signal and outputs a high-level control signal from the D terminal to the driver 35D. The microcomputer 33C outputs a high-level control signal from the D terminal to the driver 35D when a low-level voltage resulting from the closing of the push switch 34B is input to the C terminal. The relay coil 36D is excited when the output of the driver 35D becomes low level and the relay switch 37C is closed when the high level control signal is output. That is, the relay coil 36 </ b> D is excited by flowing a current when one end is connected to the power source V <b> 1 and the other end is grounded. As the relay coil 36D is excited, the relay switch 37D is closed. When the relay switch 37D is closed, a voltage (for example, 100 V) is applied to the valve 12. That is, the beverage dispenser can pass the beverage through the valve (FIG. 4, S3).

  Thereafter, when the CPU 1 provided in the microcomputer 33C determines that the beverage supply stop time of the beverage dispenser stored in the RAM 3 and the time counted by the timer 5 coincided with each other, which is predetermined by the setting machine 8, is determined. (FIG. 4, S4 · YES), a high level control signal is output from the B terminal (FIG. 4, S5). The relay coil 36B is excited when the output of the driver 35B becomes low level when the high level control signal is output. That is, one end of the relay coil 36B is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. As the relay coil 36B is excited, the relay switch 37A is opened (see T3 in FIG. 5). When the relay switch 37A is opened, the current from the power source V1 does not flow through the relay coil 36C and the diode 38A. Since the current does not flow through the relay coil 36C, the excitation of the relay coil 36C is released. The relay switches 37B and 37C are opened along with the release of the excitation of the relay coil 36C (see T3 in FIG. 5). When the relay switch 37C is opened, the current from the power source V1 does not flow through the relay coil 36D. Since the current no longer flows through the relay coil 36D, the excitation of the relay coil 36D is released. The relay switch 37D opens with the release of the excitation of the relay coil 36D. When the relay switch 37D is opened, no voltage is applied to the valve 12. That is, the beverage dispenser cannot pass the beverage through the valve (FIG. 4, S6).

  Note that when the high-level control signal is not output from the B terminal of the microcomputer 33C to the driver 35B described above (S7 in FIG. 4), the current from the power source V1 does not flow through the relay coil 36B. Therefore, the excitation of the relay coil 36B is released when the current no longer flows through the relay coil 36B. As the excitation of the relay coil 36B is released, the relay switch 37A is closed (see T3 to T4 in FIG. 5).

  According to this embodiment, when no voltage is applied to the valve 12 at the beverage supply stop time determined in advance by the setting machine 8, it becomes impossible for the beverage to pass through the valve. It becomes possible to prevent a leakage accident. Even if a high level control signal is output to the drivers 35B and 35D due to a failure of the microcomputer 33C, the relay switch 37C is open, so that no current flows through the relay coil 36D, and the voltage to the valve 12 Is not applied, it becomes impossible for the beverage to pass through the valve, and it is possible to prevent a water leakage accident due to the leakage of the beverage.

<< Fourth Embodiment >>
=== General Configuration of Beverage Dispenser ===
A schematic configuration of a beverage dispenser to which the present invention is applied will be described with reference to FIGS. 6 and 12. FIG. 6 is a circuit block diagram showing a schematic configuration of the present embodiment of the beverage dispenser.

  In the beverage dispenser, a beverage supply operation is executed by a microcomputer 33D (control unit), a sales control unit described later, and a sales mechanism unit shown in FIG.

  The microcomputer 33D controls the sales mechanism unit via the sales control unit. Specifically, the microcomputer 33D includes a CPU 1, a ROM 2, a RAM 3, and a counter 6. The CPU1, ROM2, and RAM3 are the same as those in the first embodiment. As will be described later, the counter 6 generates an operation signal (a signal when the voltage input to the C terminal of the microcomputer 33D changes (falls) from a high level to a low level) when the push switch 34B is closed. Count. Then, the CPU 1 counts the even number of the operation signals counted by the counter 6 and outputs a high-level control signal to the B terminal. In addition, when the microcomputer 33D receives a press signal from the sales button 4, the microcomputer 33D transmits a control signal to the sales mechanism unit to open a valve 12 (to be described later) and cook a beverage. In the present embodiment, for convenience of explanation, the sales button 4 is provided so as to correspond to the valve 12, but the sales button is provided according to the number of types of beverage supplied by the beverage dispenser.

  The configuration of the sales mechanism unit and the sales control unit is as in the third embodiment. In the present embodiment, for convenience of explanation, one of the valves shown in FIG. 12 (for example, FIG. 12, a water inlet valve; hereinafter, described as the valve 12) will be described. The voltage is applied or released in the same manner for the other valves. Therefore, explanation of other valves is omitted. The second voltage is ground.

=== Specific Operation of Beverage Dispenser ===
With reference to FIG. 6 to FIG. 8 and FIG. 12, a specific operation regarding whether or not to allow a beverage to pass through a valve in the beverage dispenser to which the present invention is applied will be described. FIG. 7 is a flowchart showing the operation of whether or not the beverage dispenser allows the beverage to pass through the valve. FIG. 8 is a timing chart showing whether or not the beverage dispenser allows a beverage to pass through a valve. In FIG. 8, the push switch 34B is shown at a high level when the push switch 34B is closed, and the relay switches 37B, 37C and 37A are shown at a high level when the switch is closed. . In this embodiment, the operation from the state in which the relay switch 37D of the beverage dispenser is open (that is, the unsaleable state (FIG. 7, S101)) will be described.

  When the push switch 34B is closed (FIG. 7, S102 YES), the voltage input to the C terminal of the microcomputer 33D changes (falls) from the high level to the low level (see FIG. 8, T101). The counter 6 counts 1 with the change in voltage as an operation signal. Since the push switch 34B is closed, a current flows from the power source V1 (first voltage) through the relay switch 37A to the relay coil 36C and the diode 38A. The relay coil 36C is excited by a current flowing, and the relay switches 37B and 37C are closed (see T101 in FIG. 8). Thereafter, even when the push switch 34B is opened, the current from the power source V1 continues to flow through the relay switch 37B, so that the relay coil 36C remains excited and the relay switches 37B and 37C remain closed (FIG. 8, T101 to T102). Therefore, that state is held.

  When the sales button 4 is pressed, the microcomputer 33D receives the press signal and outputs a high-level control signal from the D terminal to the driver 35D. The relay coil 36D is excited when the output of the driver 35D becomes low level and the relay switch 37C is closed when the high level control signal is output. That is, the relay coil 36 </ b> D is excited by flowing a current when one end is connected to the power source V <b> 1 and the other end is grounded. As the relay coil 36D is excited, the relay switch 37D is closed. When the relay switch 37D is closed, a voltage (for example, 100 V) is applied to the valve 12. That is, the beverage dispenser can pass the beverage through the valve (FIG. 7, S103).

  Thereafter, when the push switch 34B is closed again (FIG. 7, S104, YES), the counter 6 counts count 2 using the voltage change due to the push switch 34B being closed as an operation signal (FIG. 8, T103). reference). When the CPU 1 determines that the count by the counter 6 is based on the even number of times, the CPU 1 outputs a high-level control signal from the B terminal (S105 in FIG. 7). The relay coil 36B is excited when the output of the driver 35B becomes low level when the high level control signal is output. That is, one end of the relay coil 36B is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. As the relay coil 36B is excited, the relay switch 37A is opened. When the relay switch 37A is opened, the current from the power source V1 does not flow through the relay coil 36C and the diode 38A. Since the current does not flow through the relay coil 36C, the excitation of the relay coil 36C is released. The relay switches 37B and 37C are opened with the release of the excitation of the relay coil 36C (see T103 in FIG. 8). When the relay switch 37C is opened, the current from the power source V1 does not flow through the relay coil 36D. Since the current no longer flows through the relay coil 36D, the excitation of the relay coil 36D is released. The relay switch 37D opens with the release of the excitation of the relay coil 36D. When the relay switch 37D is opened, no voltage is applied to the valve 12. That is, the beverage dispenser cannot pass the beverage through the valve (FIG. 7, S6).

  Note that when the high-level control signal is not output from the B terminal of the microcomputer 33D to the driver 35B described above (S107 in FIG. 7), the current from the power source V1 does not flow through the relay coil 36B. Therefore, the excitation of the relay coil 36B is released when the current no longer flows through the relay coil 36B. As the excitation of the relay coil 36B is released, the relay switch 37A is closed (see T103 to T105 in FIG. 8).

  According to this embodiment, the voltage is not applied to the valve 12 by one push switch 34B, it becomes impossible for the beverage to pass through the valve, and it is possible to prevent a water leak accident due to the beverage leaking. Even if a high level control signal is output to the drivers 35B and 35D due to a failure of the microcomputer 33D, no current flows through the relay coil 36D because the relay switch 37C is open, and the voltage to the valve 12 does not flow. Is not applied, it becomes impossible for the beverage to pass through the valve, and it is possible to prevent a water leakage accident due to the leakage of the beverage.

<< Fifth Embodiment >>
=== General Configuration of Beverage Dispenser ===
A schematic configuration of a beverage dispenser to which the present invention is applied will be described with reference to FIGS. 9 and 12. FIG. 9 is a circuit block diagram showing a schematic configuration of the present embodiment of the beverage dispenser.

  In the beverage dispenser, a beverage supply operation is executed by a microcomputer 33E (control unit), a sales control unit described later, and a sales mechanism unit shown in FIG.

  The microcomputer 33E controls the sales mechanism unit via the sales control unit. Specifically, the microcomputer 33E includes a CPU 1, a ROM 2, and a RAM 3. The CPU1, ROM2, and RAM3 are the same as those in the first embodiment. In addition, when the microcomputer 33E receives a pressing signal from the sales button 4, the microcomputer 33E transmits a control signal to the sales mechanism unit so as to open a valve 12 described later and cook the beverage. In the present embodiment, for convenience of explanation, the sales button 4 is provided so as to correspond to the valve 12, but the sales button is provided according to the number of types of beverage supplied by the beverage dispenser.

  The sales mechanism unit is as in the first embodiment. In the present embodiment, for convenience of explanation, one of the valves shown in FIG. 12 (for example, FIG. 12, a water inlet valve; hereinafter, described as the valve 12) will be described. The voltage is applied or released in the same manner for the other valves. Therefore, explanation of other valves is omitted.

  The sales control unit controls the sales mechanism unit based on a control signal from the microcomputer 33E. Hereinafter, the sales control unit will be described. The relay switch 37A (first relay switch) of the electromagnetic relay is a switch that opens as the relay coil 36B is excited. The relay switches 37B (second relay switch) and 37C (third relay switch) of the electromagnetic relay are switches that close as the relay coil 36C is excited. One end of the relay coil 36B is connected to a power source V1 (first voltage, for example, 24V), and the other end is connected to one end of a push switch 34D (sales stop switch). The other end of the push switch 34D, which is closed only during the pressed (operated) period, is grounded. The relay coil 36B is connected to the power source V1 when the push switch 34D is closed, and is excited by a current flowing. One end of the push switch 34C (sales switch) that is closed only during the pressed (operated) period is connected to the diode 38A, and the other end is grounded. The relay switch 37A, the relay coil 36C, the diode 38A, and the push switch 34C are connected in series between the power supply V1 and the ground. The relay coil 36C is connected to the power source V1 when the push switch 34C is closed, and is excited by a current flowing therethrough. The relay switch 37B is connected in parallel with the push switch 34C. One end of the relay switch 37C is connected to the power source V1. The relay switch 37D is closed as the relay coil 36D is excited. One end of the relay coil 36D is connected to the other end of the relay switch 37C, and the other end is connected to a D terminal provided in the microcomputer 33E via a driver 35D. The relay coil 36D is excited when the output of the driver 35D becomes low level when a high level control signal is output from the D terminal of the microcomputer 33E. That is, one end of the relay coil 36D is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. The second voltage is ground.

=== Specific Operation of Beverage Dispenser ===
With reference to FIGS. 9 and 12, a specific operation of whether or not to allow a beverage to pass through a valve in the beverage dispenser to which the present invention is applied will be described. In the present embodiment, the operation from the state in which the relay switch 37D of the beverage dispenser is open will be described.

  When the push switch 34C is closed, a current flows from the power source V1 through the relay switch 37A to the relay coil 36C and the diode 38A. The relay coil 36C is excited by a current flowing, and the relay switches 37B and 37C are closed. Thereafter, even when the push switch 34C is opened, the current from the power source V1 continues to flow through the relay switch 37B, so that the relay coil 36C remains excited and the relay switches 37B and 37C remain closed. Therefore, that state is held.

  When the sales button 4 is pressed, the microcomputer 33E receives the press signal and outputs a high-level control signal from the D terminal to the driver 35D. The relay coil 36D is excited when the output of the driver 35D becomes low level and the relay switch 37C is closed when the high level control signal is output. That is, the relay coil 36 </ b> D is excited by flowing a current when one end is connected to the power source V <b> 1 and the other end is grounded. As the relay coil 36D is excited, the relay switch 37D is closed. When the relay switch 37D is closed, a voltage (for example, 100 V) is applied to the valve 12. That is, the beverage dispenser can pass the beverage through the valve.

  Thereafter, when the push switch 34D is closed, a current flows from the power source V1 to the relay coil 36B. The relay coil 36B is excited when a current flows. As the relay coil 36B is excited, the relay switch 37A is opened. When the relay switch 37A is opened, the current from the power source V1 does not flow through the relay coil 36C and the diode 38A. Since the current does not flow through the relay coil 36C, the excitation of the relay coil 36C is released. The relay switches 37B and 37C are opened along with the release of the excitation of the relay coil 36C. When the relay switch 37C is opened, the current from the power source V1 does not flow through the relay coil 36D. Since the current no longer flows through the relay coil 36D, the excitation of the relay coil 36D is released. The relay switch 37D opens with the release of the excitation of the relay coil 36D. When the relay switch 37D is opened, no voltage is applied to the valve 12. That is, the beverage dispenser cannot pass the beverage through the valve.

  According to this embodiment, no voltage is applied to the valve 12 by the push switch 34D, the beverage cannot pass through the valve, and a water leakage accident due to the beverage leaking can be prevented. Even if a high level control signal is output to the driver 35D due to a failure of the microcomputer 33E or the like, no current flows through the relay coil 36D because the relay switch 37C is open, and voltage is applied to the valve 12. The beverage cannot pass through the valve, and it is possible to prevent a water leak accident due to the beverage leaking. Further, by providing a switch that allows the beverage to pass through the valve (push switch 34C) and a switch that prevents the beverage from passing through the valve (push switch 34D), it is difficult to make a mistake in pressing the switch.

<< Sixth Embodiment >>
=== General Configuration of Beverage Dispenser ===
A schematic configuration of a beverage dispenser to which the present invention is applied will be described with reference to FIGS. 10 and 12. FIG. 10 is a circuit block diagram showing a schematic configuration of the present embodiment of the beverage dispenser.

  In the beverage dispenser, a beverage supply operation is executed by a microcomputer 33F (control unit), a sales control unit described later, and a sales mechanism unit shown in FIG.

  The microcomputer 33F controls the sales mechanism unit via the sales control unit. Specifically, the microcomputer 33F includes a CPU 1 (counter), a ROM 2, a RAM 3, a timer 5, and a human body sensor 9. The CPU1, ROM2, and RAM3 are the same as those in the first embodiment. The timer 5 measures time. The human body sensor 9 detects whether or not there is a person in a predetermined range from the beverage dispenser, and transmits a detection signal to the CPU 1 based on the detection. As will be described later, when the CPU 1 does not receive a detection signal from the human body sensor 9 that there is a person, it captures the time counted by the timer 5. When a detection signal indicating that a person is present is not received from the human body sensor 9 for a predetermined period (continuation period) from the capture time, a high-level control signal is output. In addition, when the microcomputer 33F receives a pressing signal from the sales button 4, the microcomputer 33F transmits a control signal to the sales mechanism unit to open a valve 12 (to be described later) and cook a beverage. In the present embodiment, for convenience of explanation, the sales button 4 is provided so as to correspond to the valve 12, but the sales button is provided according to the number of types of beverage supplied by the beverage dispenser.

  The sales mechanism unit is as in the first embodiment. In the present embodiment, for convenience of explanation, one of the valves shown in FIG. 12 (for example, FIG. 12, a water inlet valve; hereinafter, described as the valve 12) will be described. The voltage is applied or released in the same manner for the other valves. Therefore, explanation of other valves is omitted.

  The sales control unit controls the sales mechanism unit based on a control signal from the microcomputer 33F. Hereinafter, the sales control unit will be described. The relay switch 37F (valve control relay switch) of the electromagnetic relay is a switch that closes when the relay coil 36F is excited. One end of the relay coil 36F is connected to the power source V1, and the other end is connected to an F terminal provided in the microcomputer 33F via a driver 35F. The relay coil 36F is excited when the output of the driver 35F becomes low level when a high level control signal is output from the F terminal of the microcomputer 33F. That is, one end of the relay coil 36F is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. One end of the relay switch 37F is connected to the other end of the manual switch 43. The relay switch 37D is closed as the relay coil 36D is excited. One end of the relay coil 36D is connected to the other end of the manual switch 43, and the other end is connected to a D terminal provided in the microcomputer 33F via a driver 35D. The relay coil 36D is excited when the output of the driver 35D becomes low level when a high level control signal is output from the D terminal of the microcomputer 33F. That is, one end of the relay coil 36D is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. The manual switch 43 has one end connected to the power source V1 and the other end connected to the relay switch 37F. The manual switch 43 is a switch that connects between the power source V1 and the relay switch 37F when closed by a person, and shuts off between the power source V1 and the relay switch 37F when opened. In the present embodiment, the manual switch 43 is described as being closed.

=== Specific Operation of Beverage Dispenser ===
With reference to FIG. 10 to FIG. 12, a specific operation as to whether or not to allow a beverage to pass through a valve in the beverage dispenser to which the present invention is applied will be described. FIG. 11 is a flowchart showing the operation of whether or not the beverage dispenser allows the beverage to pass through the valve. In the present embodiment, the operation from the state in which the relay switch 37D of the beverage dispenser is open will be described.

  When the human body sensor 9 detects that there is a person within a predetermined range from the beverage dispenser, a detection signal indicating that there is a person is transmitted to the CPU 1 (FIG. 11, S201, YES). When receiving the detection signal, the CPU 1 outputs a high-level control signal from the F terminal to the driver 35F (S202 in FIG. 11). The relay coil 36F is excited when the output of the driver 35F becomes a low level when the high-level control signal is output. That is, one end of the relay coil 36F is connected to the power source V1, and the other end is grounded, whereby a current flows and is excited. As the relay coil 36F is excited, the relay switch 37F is closed.

  When the sales button 4 is pressed, the microcomputer 33F receives the press signal and outputs a high-level control signal from the D terminal to the driver 35D. The relay coil 36D is excited when the output of the driver 35D becomes low level and the relay switch 37F is closed when the high level control signal is output. That is, the relay coil 36 </ b> D is excited by flowing a current when one end is connected to the power source V <b> 1 and the other end is grounded. As the relay coil 36D is excited, the relay switch 37D is closed. When the relay switch 37D is closed, a voltage (for example, 100 V) is applied to the valve 12. That is, the beverage dispenser can pass the beverage through the valve (FIG. 11, S203).

  Thereafter, the CPU 1 captures the time counted by the timer 5 when the detection signal indicating that there is a person from the human body sensor 9 is not received (FIG. 11, S204, NO). Then, it is compared with the time measured by the timer 5 until reaching a predetermined period (continuation period) stored in the ROM 2 or RAM 3 from the fetch time. During the continuation period, when the detection signal indicating that there is a person is not received from the human body sensor 9 and it is determined that the continuation period has elapsed (FIG. 11, S205, YES), the CPU 1 determines that the driver 35F The output of the level control signal is stopped (FIG. 11, S207). When the high level control signal is not output from the F terminal of the microcomputer 33F to the driver 35F, the low level is not output from the driver 35F, and the current from the power source V1 does not flow to the relay coil 36F. Therefore, the excitation of the relay coil 36F is released when the current no longer flows through the relay coil 36F. As the excitation of the relay coil 36F is released, the relay switch 37F is opened. When the relay switch 37F is opened, the current from the power source V1 does not flow through the relay coil 36D. Since the current no longer flows through the relay coil 36D, the excitation of the relay coil 36D is released. The relay switch 37D opens with the release of the excitation of the relay coil 36D. When the relay switch 37D is opened, no voltage is applied to the valve 12. That is, the beverage dispenser cannot pass the beverage through the valve (FIG. 11, S208). When the CPU 1 receives a signal from the human body sensor 9 during the counting of a predetermined period in the ROM 2, the CPU 1 resets the count (FIG. 11, S206).

  According to this embodiment, when there is no person within a predetermined range from the beverage dispenser for a predetermined period of time, no voltage is applied to the valve 12, thereby making it impossible for the beverage to pass through the valve. It becomes possible to prevent water leakage accidents due to leakage.

  In the present embodiment, the current from the power source V1 to the relay coil 36D can be cut off by opening the manual switch 43. Further, in the present embodiment, the excitation of the relay coil 36 </ b> D is released using the time measured by the timer 5 when no one is present as the start time, but the present invention is not limited to this. A counter may be provided in the microcomputer 33F. In that case, when the human body sensor detects that there is a person, the counter starts counting, and when the counter finishes counting for a predetermined period, the excitation of the relay coil 36D is released. It may be provided as follows.

  In the first to fourth embodiments and the sixth embodiment, the relay coil 36D is excited when a high-level control signal is output from the microcomputer, but this is not the only case. It is not a thing. The relay coil 36D may be excited by an operation signal from an operation instruction button (not shown) or the like.

=== Other Embodiments ===
As mentioned above, although the drink supply apparatus which concerns on this invention was demonstrated, said description is for making an understanding of this invention easy, and does not limit this invention. The present invention can be changed and improved without departing from the gist thereof.

<< Valve Relay Coil Form >>
In the third, fourth, and fifth embodiments, the relay coil 36C is provided so as to close the two relay switches 37B and 37C when excited, but the present invention is not limited to this. A relay coil that closes the relay switch 37B when excited and a relay coil that closes the relay switch 37C when excited may be provided separately to increase the degree of freedom in circuit design.

<< Timer and counter installation form >>
The timer and counter in the present embodiment are provided in the microcomputer, but are not limited thereto. For example, it may be connected to a microcomputer via an interface or the like.

It is a figure which shows 1st Embodiment of the drink supply apparatus which concerns on this invention. It is a figure which shows 2nd Embodiment of the drink supply apparatus which concerns on this invention. It is a figure which shows 3rd Embodiment of the drink supply apparatus which concerns on this invention. It is a flowchart which shows operation | movement of the drink supply apparatus in 3rd Embodiment. It is a timing chart which shows operation | movement of the drink supply apparatus in 3rd Embodiment. It is a figure which shows 4th Embodiment of the drink supply apparatus which concerns on this invention. It is a flowchart which shows operation | movement of the drink supply apparatus in 4th Embodiment. It is a timing chart which shows operation | movement of the drink supply apparatus in 4th Embodiment. It is a figure which shows 5th Embodiment of the drink supply apparatus which concerns on this invention. It is a figure which shows 6th Embodiment of the drink supply apparatus concerning this invention. It is a flowchart which shows operation | movement of the drink supply apparatus in 6th Embodiment. It is a figure which shows the piping system of the drink dispenser with which a drink supply apparatus is applied.

Explanation of symbols

1 CPU 2 ROM
3 RAM 4 Sales Button 5 Timer 6 Counter 8 Setting Machine 9 Human Body Sensor 11 Water Filter 12 Water Inlet Valve (Valve)
DESCRIPTION OF SYMBOLS 13 Distributor 14 Water tank 15 Coil unit 16 Water supply valve 17 Pressurization pump 18 Multi valve 19 Carbonator 20 Verista pump 20 Dilution water valve 21, 25, 27 Flow control valve 22 Cold water valve 23 Carbonator water supply valve 24 Carbon dioxide gas cylinder 26 Carbonated water valve 28 Raw material tank 29 Raw material valve 33 Microcomputer 34 Push switch 35 Driver 36 Relay coil 37 Relay switch 38 Diode 39 Resistor 40 Valve 41 npn transistor 42 pnp transistor 43 Manual switch

Claims (7)

A valve for passing a beverage in the pipe, a valve relay switch connected to the valve, a valve relay coil connected to a predetermined voltage, and the valve relay switch when the valve relay coil is excited Is a beverage supply device that closes and allows the beverage to pass through the valve,
Sales setting switch that closes only when operated,
A timer that keeps time,
Based on a switch operation signal of a predetermined logical level generated when the sales setting switch is closed, a control signal of one logical level is output, and the timed output when the timer times a predetermined time is output. Based on the control unit for outputting the control signal of the other logic level,
Based on the control signal at one logic level, the predetermined voltage and the valve relay coil are held in connection with excitation, and based on the control signal at the other logic level A valve control relay switch that cuts off a voltage and the valve relay coil;
A beverage supply device comprising: A valve for passing a beverage in the pipe, a valve relay switch connected to the valve, and a valve relay coil connected to a predetermined voltage, and when the valve relay coil is excited, A beverage supply device in which a valve relay switch is closed and the beverage can pass through the valve,
Sales setting switch that closes only when operated,
Control that outputs a switch operation signal having one logic level when the sales setting switch is closed, and alternately outputs a control signal of one logic level or the other logic level each time the switch operation signal is input And
Based on the control signal at one logic level, the predetermined voltage and the valve relay coil are held in connection with excitation, and based on the control signal at the other logic level A valve control relay switch that cuts off a voltage and the valve relay coil;
A beverage supply device comprising: A valve for allowing beverage in the pipe to pass through, a valve relay switch connected to the valve, and a valve relay coil connected to the first voltage, and when the valve relay coil is excited, A beverage supply device in which the valve relay switch is closed and the beverage can pass through the valve,
Sales setting switch that closes only when operated,
A first relay switch connected in series with the sales setting switch between the first voltage and the second voltage (<the first voltage), and opened with excitation;
A second relay switch connected in parallel with the sales setting switch and closing with excitation;
A third relay switch connected between the first voltage and the valve relay coil and closed at the same timing as the second relay switch upon excitation;
A timer that keeps time,
A control unit to which a switch operation signal that becomes one of the logic levels when the sales setting switch is closed;
With
When the sales setting switch is closed from the state in which the second relay switch and the third relay switch are open, the second relay switch and the third relay switch are closed regardless of the control unit, The beverage will pass through the valve,
When the second relay switch and the third relay switch are closed, the first relay switch is excited based on a control signal of the control unit that detects that the timer has timed a predetermined time. With the opening, the second relay switch and the third relay switch are opened, and the beverage cannot pass through the valve.
A beverage supply device characterized by the above. A valve for allowing beverage in the pipe to pass through, a valve relay switch connected to the valve, and a valve relay coil connected to the first voltage, and when the valve relay coil is excited, A beverage supply device in which the valve relay switch is closed and the beverage can pass through the valve,
Sales setting switch that closes only when operated,
A first relay switch connected in series with the sales setting switch between the first voltage and the second voltage (<the first voltage), and opened with excitation;
A second relay switch connected in parallel with the sales setting switch and closing with excitation;
A third relay switch connected between the first voltage and the valve relay coil and closed at the same timing as the second relay switch upon excitation;
A control unit to which a switch operation signal that becomes one logic level when the sales setting switch is closed is provided,
When the sales setting switch is closed from the state in which the second relay switch and the third relay switch are open, the second relay switch and the third relay switch are closed regardless of the control unit, The beverage can pass through the valve,
When the sales setting switch is closed from the state where the second relay switch and the third relay switch are closed, the first relay switch is based on the control signal of the control unit to which the switch operation signal is input. Opens with excitation and the second relay switch and the third relay switch open so that the beverage cannot pass through the valve.
A beverage supply device characterized by the above. A counter that counts the input of the switch operation signal to the control unit;
The counter starts counting from the switch operation signal when the second relay switch and the third relay switch are open,
The control unit outputs a control signal for opening the first relay switch along with excitation when the counter counts the switch operation signal for an even number of times.
The beverage supply device according to claim 1. A valve for allowing beverage in the pipe to pass through, a valve relay switch connected to the valve, and a valve relay coil connected to the first voltage, and when the valve relay coil is excited, A beverage supply device in which the valve relay switch is closed and the beverage can pass through the valve,
A sales switch that closes only when operated,
A first relay switch connected in series with the switch for sale between the first voltage and a second voltage (<the first voltage), and opened with excitation;
A sales stop switch for closing only when operated and opening the first relay switch with excitation;
A second relay switch connected in parallel with the switch for sale and closing with excitation;
A third relay switch connected between the first voltage and the valve relay coil and closed at the same timing as the second relay switch upon excitation,
When the sales switch is closed from the state where the second relay switch and the third relay switch are open, the second relay switch and the third relay switch are closed and the beverage can pass through the valve. And
When the sale stop switch is closed from the state where the second relay switch and the third relay switch are closed, the first relay switch opens with excitation and the second relay switch and the third relay. When the switch is opened, the beverage cannot pass through the valve,
A beverage supply device characterized by the above. A valve for passing a beverage in the pipe, a valve relay switch connected to the valve, and a valve relay coil connected to a predetermined voltage, and when the valve relay coil is excited, A beverage supply device in which a valve relay switch is closed and the beverage can pass through the valve,
A valve control relay switch connected between the predetermined voltage and the valve relay coil and closed with excitation;
A human body sensor for detecting the human body;
A counting unit for counting a duration during which the human body sensor is not detecting a human body;
A control unit that outputs a control signal for opening the valve control relay switch when the excitation is released when a continuation period counted by the counting unit exceeds a predetermined period;
A beverage supply device comprising:

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