JP4610107B2 - Transmission control device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention , Send With regard to the delivery control device, in particular, when delivering a supply medium such as liquid or gas, the delivery operation is performed within a controllable range, and the supply medium can be delivered accurately and stably with a constant volume. Can Sending The present invention relates to an output control device.
[0002]
[Prior art]
Conventionally, when a constant amount of liquid is continuously delivered from a supply source to a pipeline, a delivery device for delivering the liquid based on the rotation of the rotor is provided in the pipeline, so that the delivery amount of the liquid becomes a constant amount. As described above, the rotor is driven to control the delivery.
[0003]
In order to realize such delivery control, a gear reducer is provided between the rotor and the drive source, and the rotor is stably rotated at a constant speed in a rotation region corresponding to the required delivery amount per time. It is known to let
[0004]
[Problems to be solved by the invention]
However, according to the conventional delivery control, when the rotational speed of the rotor is mechanically reduced, it is necessary to set the reduction ratio of the gear reducer according to the physical properties of the liquid and the delivery amount. There is a problem that it requires troublesome work such as selecting and assembling parts. Further, depending on the required reduction ratio, there is a problem that the gear reducer becomes large, and there is a geometric limitation on equipment that requires liquid delivery control.
[0006]
Book An object of the present invention is to provide a delivery control device that eliminates the need for selecting and assembling parts according to the reduction ratio, and realizes delivery control of a constant amount of liquid without increasing the size of the configuration.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, the present invention Filled with pressurized liquid A main body having a mouth and an outlet, and the main body that is housed in the main body and driven to rotate to flow into the main body from the inlet Pressurized liquid A rotor that flows out from the outlet at a constant volume, and a delivery amount adjuster that includes a drive motor that rotationally drives the rotor; An energization signal is output to an energization unit that supplies electric power to the drive motor. Control unit A first transistor for supplying power to the drive motor, a resistor for discharging a current generated by the drive motor, a second transistor for turning on a circuit provided with the resistor, A discharge circuit having a switching unit that performs a switching operation for the first transistor and the second transistor based on an energization signal input from the energization unit, and the discharge circuit includes a PWM (Pulse Width Modulation) ) Based on the control, the first transistor is turned on when the drive motor is energized, the second transistor is turned off, the first transistor is turned off when the drive motor is energized, and the second transistor is turned off. The transistor is turned on, and when the drive motor is turned off, the pressure of the pressurized liquid causes the pressure to pass through the rotor. The electric power based on the electromotive force generated participating in dynamic motor is discharged by the resistor, transmission control apparatus characterized by having a configuration for eliminating the ripple voltage I will provide a.
[0010]
Above Sent According to the delivery control device, when a load exceeding the control range is given to the delivery amount adjuster by the supply medium to be delivered, the delivery of the supply medium is limited for the load exceeding the control range, and the fixed volume amount is reduced. Ensure delivery.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a transmission control method and a transmission control apparatus according to the present invention will be described in detail with reference to the drawings.
[0012]
FIG. 1 partially shows a beverage supply apparatus according to a first embodiment of the present invention, and schematically shows a syrup supply line for delivering syrup as a liquid ingredient by a beverage dispenser. The syrup supply line includes a carbon dioxide cylinder 1 containing high-pressure carbon dioxide, a syrup tank 2 containing syrup as a liquid raw material, a carbon dioxide supply line 3 for supplying carbon dioxide to the syrup tank, and a carbon dioxide supply line. 3, a carbon dioxide gas regulating valve 4, a cooling coil 5 for cooling syrup with cooling water (not shown), a syrup supply line 6 for sending syrup, and a constant volume flow rate for sending syrup at a constant volume. A rotator drive motor 7A comprising a regulator (delivery amount regulator) 7, a DC motor for driving a rotator (described later) provided in the constant volume flow rate regulator 7 and delivering syrup at a constant volume, and A syrup solenoid valve 8 that opens and closes the supply line 6, a multi-valve 9 that mixes liquids such as syrup, dilution water, and carbonated water, and a rotor drive motor 7A A conductive portion 10 for supplying power, a drive load controller 11 for varying the electrical load of the rotor drive motor 7A.
[0013]
FIG. 2 shows a constant volume flow rate regulator (hereinafter referred to as a flow rate regulator) 7, FIG. 2 (a) is a state seen from the plane direction, FIG. 2 (b) is a state seen from the side surface direction, FIG. (C) is the state which looked at the cross section in the AA part of FIG.2 (b) in the arrow direction. The flow rate regulator 7 includes a main body 12 having an inflow portion 12a into which syrup flows in and an outflow portion 12b from which syrup flows out, a speed reducer 13 fixed to the upper portion of the main body 12 with a screw or the like, and a speed reducer 13 A rotor drive motor 7A fixed to the main body 12, a lid portion 14 fixed to the lower portion of the main body 12, and a set of circular gears 15 (rotors) provided inside the main body 12. Yes. The pair of circular gears 15 is rotatably supported by shafts 16 (drive side) and 17 (driven side) supported by the main body 12 and the lid portion 14, and the shaft 16 is rotated via the speed reducer 13. It rotates in the direction of the arrow by being driven by being connected to the rotation shaft of the child drive motor 7A.
[0014]
The flow rate regulator 7 also detects the rotational speed of the circular gear 15 (rotational speed of the rotor driving motor 7A that is connected to the shaft 16 via the speed reducer 13) and detects the rotational speed of the rotor driving motor 7A. A magnet encoder 18 (described later) that outputs pulses in conjunction with the rotation speed is included.
[0015]
FIG. 3 shows the amount of syrup discharged by driving the flow rate regulator 7. When the flow rate regulator 7 is stopped, the rotor drive motor 7A acts as a brake that prevents the circular gear 15 from rotating. Therefore, the pressure loss is larger than that of a normal flow regulator or flow meter, and the syrup discharge amount due to the pressure loss of the circular gear 15 is the syrup pushed out of the syrup tank 2 by the pressure of carbon dioxide supplied from the carbon dioxide cylinder 1. This is less than the syrup discharge amount of a flow regulator or a flow meter that discharges water. In FIG. 3, the portion where the syrup discharge amount of the flow rate regulator 7 is smaller than the syrup discharge amount of a normal flow regulator or flow meter is a decrease in the syrup discharge amount due to the pressure loss of the circular gear 15, and the rotor drive motor 7A. The force required to drive the circular gear 15 becomes smaller as the pressure for pushing out the syrup is added by the pressure of carbon dioxide. Further, in a portion where the syrup discharge amount of the flow rate regulator 7 is larger than the syrup discharge amount of a normal flow regulator or syrup flow meter, the rotor drive motor 7A uses a circular shape to drive the syrup pushed out of the syrup tank 2 by the pressure of carbon dioxide gas. The rotor drive motor 7A drives the circular gear 15 by the amount of syrup discharge increased by driving the gear 15 and by the amount by which the syrup is pushed out of the syrup tank 2 by the pressure of carbon dioxide gas. The force required for this is reduced.
[0016]
FIG. 4 shows the drive load control unit 11 and includes a power transistor 114 provided in a drive circuit of the rotor drive motor 7A and a variable resistor 115 that varies the equivalent resistance of the power transistor 114.
[0017]
The variable resistor 115 varies the electrical load of the rotor drive motor 7A by varying its resistance value with a resistance variable mechanism (not shown). The variable amount is determined by data obtained through experiments or the like. The amount of rotation of the rotor drive motor 7A is not set to an external load applied by the syrup when the syrup is sent out.
[0018]
FIG. 5 shows a control block of the syrup supply line in the first embodiment, and an input device 23 having a keyboard and the like for inputting various setting values for control, and a plurality of beverages provided in front of the beverage supply device The sales switch 24 for selection, the memory 25 which stores the control data of each part of a drink supply apparatus, the timer 26 which measures time, such as syrup supply time, and the main control part 27 which controls each above-mentioned part are included.
[0019]
Next, the syrup supply operation of the beverage supply device according to the first embodiment will be described.
[0020]
The main control unit 27 inputs a sales signal based on the purchaser selecting a beverage and pressing the sales switch 24. The main control unit 27 outputs an energization signal to the energization unit 10 based on the sales signal input. The energization unit 10 supplies electric power to the rotor drive motor 7A and the syrup solenoid valve 8 when an energization signal is input. The syrup solenoid valve 8 opens the syrup supply line 6 based on the supply of electric power, and the rotor drive motor 7A drives the flow rate regulator 7 to send the syrup to the multi-valve 9 at a constant volume.
[0021]
The rotor drive motor 7A rotates with a load corresponding to the resistance value of the variable resistor 115 provided in the drive load control unit 11 when sending syrup. As a result, the current value at the time of driving the motor is large, and as a result, the motor rotates in a high torque region as compared with the rotation without a load corresponding to the resistance value.
[0022]
According to the first embodiment, the drive load control unit 11 increases the amount of current supplied to the rotor drive motor 7A by applying an electrical load to the rotor drive motor 7A when sending the syrup, thereby increasing the current value. Increase. As a result, the rotor drive motor 7A can be rotated in a high torque region, and even if a load is transmitted to the pair of circular gears 15 due to abnormal syrup delivery, pressure fluctuation in the syrup tank, etc., the drive state Does not become unstable and can be kept within a driving range in which the increase / decrease control of the delivery amount can be performed. Further, since the rotor drive motor 7A can be driven at an appropriate reduction ratio with respect to the load based on the torque characteristics of the rotor drive motor 7A and the delivery control can be performed, work such as selection and assembly of a reduction gear and the like is unnecessary. Thus, a compact device configuration can be obtained.
[0023]
Further, when the load applied to the pair of circular gears 15 via the syrup is large, it can be dealt with by increasing the resistance value of the variable resistor 115, but as the energization amount increases. The amount of heat generated by the variable resistor 115 increases. For this reason, it is necessary to set the energization amount in consideration of the heat generated by the variable resistor 115.
[0024]
In the first embodiment described above, a drive having an analog voltage regulator between the rotator drive motor 7A and the syrup delivery control so that the syrup delivery control can always be performed within the control range of the rotor drive motor 7A. Although the configuration in which the load control unit 11 is provided has been described, syrup transmission control can be performed by performing a switching operation based on PWM control, for example, to suppress heat generation during energization and further improve power efficiency.
[0025]
FIG. 6 partially shows a beverage supply apparatus according to the second embodiment of the present invention, and instead of the drive load control unit 11 described in the first embodiment, the energizing unit 10 to the rotor drive motor 7A. The configuration having the discharge circuit 11A for discharging the electric power generated by the rotor drive motor 7A in the power transmission path for supplying electric power is different from that of the first embodiment, and other configurations and functions are the first implementation. Since the configuration is the same as that of the first embodiment, redundant description is omitted.
[0026]
The rotor drive motor 7A uses a DC motor and is energized by the energization unit 10 based on PWM (Pulse Width Modulation) control that varies the rotation speed by changing the ratio (duty cycle) of the pulse width Hi and Low. Be controlled. Since PWM control is a well-known technique, detailed description thereof is omitted.
[0027]
FIG. 7 shows a discharge circuit 11A, which includes a transistor 110 that supplies power to the drive circuit of the rotor drive motor 7A, a resistor 111 for discharging the current generated in the rotor drive motor 7A, and the resistor 111. A transistor 112 that turns on the provided circuit and a switching unit 113 that performs a switching operation on the transistors 110 and 112 are provided.
[0028]
The switching unit 113 performs a switching operation for the transistors 110 and 112 based on the energization signal input from the energization unit 10. When the motor is driven, the transistor 110 is turned on and the transistor 112 is turned off to rotate the rotor drive motor 7A at a specified rotational speed. When the motor is not driven, the transistor 110 is turned off, the transistor 112 is turned on, and the circuit provided with the resistor 107 is turned on. Further, if the viscosity of the pressurized syrup flowing into the flow rate regulator 7 is large, the fluidity is small, so that the load reduction amount applied to the circular gear 15 is small. Therefore, the transistor 112 may be always turned off when a pressurized liquid having a certain viscosity or higher is delivered. Further, when the viscosity of the pressurized syrup flowing into the flow rate regulator 7 is small, the fluidity is large, so that the load reduction amount applied to the circular gear 15 is large. In this case, the transistor 112 is turned on in the off pulse in synchronization with the motor energization operation. This switching may be synchronized with PWM on / off.
[0029]
FIG. 8 shows a drive system of the flow rate regulator 7, which is equipped with a magnet encoder 18 attached to the rotating shaft 7B of the rotor drive motor 7A and a pulse generation circuit that generates an output pulse according to the rotation of the magnet encoder 18. A base plate 19, a pinion gear 20 attached to the rotary shaft 7B of the rotor drive motor 7A, a gear 16A attached to the shaft 16 (drive shaft) of the circular gear 15 and meshed with the pinion gear 20, and the shaft 16 connected to the main body 12 ( (Not shown) having a bearing member 21 that is rotatably supported and a seal member 22 that is attached to the shaft 16 and prevents pressure leakage. The rotational speed of the pinion gear 20 is reduced by the gear 16A and transmitted to the shaft 16. is doing.
[0030]
When the flow rate adjuster 7 rotates a pair of circular gears 15, the syrup pushed out of the syrup tank 2 by the pressure of carbon dioxide supplied from the carbon dioxide cylinder 1 through the carbon dioxide supply line 3 flows into the inflow portion 12 a. Flows into the main body 12 and is held in a space B formed between the teeth of the circular gear 15 and the inner wall of the main body 12 and is sent along the inner wall of the main body 12 to reach the outflow portion 12b. Spill from.
[0031]
Next, the syrup supply operation of the beverage supply device according to the second embodiment will be described.
[0032]
The main control unit 27 inputs a sales signal based on the purchaser selecting a beverage and pressing the sales switch 24. The main control unit 27 outputs an energization signal to the energization unit 10 based on the sales signal input. The energization unit 10 supplies electric power to the rotor drive motor 7A and the syrup solenoid valve 8 when an energization signal is input. The syrup solenoid valve 8 opens the syrup supply line 6 based on the supply of electric power, and the rotor drive motor 7A drives the flow rate regulator 7 to send the syrup to the multi-valve 9 at a constant volume.
[0033]
The energization unit 10 supplies power to the rotor drive motor 7A based on the duty ratio stored in the memory 25. The energization unit 10 supplies power to the rotor drive motor 7A at a duty ratio of 100% until a certain time (for example, 100 m / s) has elapsed from the start of the drive of the rotor drive motor 7A. Power is supplied at a duty ratio set to. This fixed time is set based on the physical properties such as the viscosity of the liquid to be delivered and the electrical characteristics of the rotor drive motor 7A.
[0034]
FIG. 9A shows a pulse waveform at the time of sending syrup. A pressure exceeding the controllable range of the rotor drive motor 7A is applied to the set of circular gears 15, whereby the set of circular gears. When 15 is driven beyond the control range of the rotor drive motor 7A, an electromotive force is generated, and a ripple L based on the electromotive force is generated during an off pulse. By sending a flow rate corresponding to the amount of ripple L generated, a deviation from the desired flow rate occurs.
[0035]
In particular, when the duty of the rotor drive motor 7A is small, for example, when the control load on the rotor drive motor 7A is 20 g-cm and 25% duty, control is performed by supplying pressurized syrup. The load amount becomes 20% duty or less that allows control of the rotor drive motor 7A, which exceeds the control range for rotating the motor. If the voltage applied to the rotor drive motor 7A is 0% in this state, the generator generates a voltage corresponding to a duty of about 40% by the pressurized syrup. In such a state, the voltage applied by the drive circuit of the rotor drive motor 7A is only given the drive torque at the time of starting the motor.
[0036]
FIG. 9B shows a pulse waveform at the time of syrup sending when the discharge circuit 11A is operated, and the switching unit 113 resists the electric power based on the electromotive force by turning on the transistor 112 at the time of the off pulse at the time of energizing the motor. The ripple L shown in FIG. In this way, the rotor drive motor 7A is rotationally driven within the control range.
[0037]
The rotor drive motor 7A rotationally drives a pair of circular gears 15 in the rotation direction shown in FIG. The pair of circular gears 15 flows syrup supplied through the syrup supply line 6 from the inflow portion 12a of the flow regulator 7 into the main body 12, and between the teeth of the circular gear 15 and the inner wall of the main body 12. It is made to flow continuously from the outflow portion 12b by sending it along the inner wall of the main body 12 while being held in the space B formed by the above. The multi-valve 9 supplies the syrup supplied through the syrup supply line 6 as a beverage by mixing it with dilution water and carbonated water (not shown) in the valve.
[0038]
In the syrup supply operation described above, for the drive time of the rotor drive motor 7A, for example, sales time data based on the cup size is stored in the memory 25, and the drive time is selectively determined based on this data. Is possible.
[0039]
In the above syrup supply operation, a case where one type of syrup is supplied to the syrup supply line is described. For example, a mixed syrup in which two or more types of syrups having different densities are mixed, or two or more types of syrups are mixed. Can be continuously supplied to the syrup supply line.
[0040]
FIG. 10 shows a change in the value of the current flowing through the rotor drive motor 7A when the circular gear 15 rotates, and when the circular gear 15 is rotated while the main body 12 of the flow rate regulator 7 is filled with syrup. A load is applied to the circular gear 15, and the value of the current flowing through the rotor drive motor 7A increases. However, when the syrup in the main body 12 is reduced, the load applied to the circular gear 15 is reduced, and the current value flowing through the rotor drive motor 7A is reduced by the current value difference D. For example, when detecting a change in the current value difference D, the main control unit 27 can light the beverage sold-out display on the sales switch 24 assuming that the syrup in the main body 12 has disappeared.
[0041]
Further, when the syrup in the main body 12 is reduced, the load applied to the circular gear 15 is reduced, and the pulse frequency output from the magnet encoder 18 is changed. Therefore, instead of detecting the change in the current value flowing through the rotor drive motor 7A. In addition, a change in the pulse frequency output from the magnet encoder 18 may be detected by the main control unit 27. The main control unit 27 may make the sales switch 24 turn on the beverage sold-out display on the assumption that the syrup in the main body 12 has disappeared when the change in the pulse frequency exceeds the allowable value.
[0042]
FIG. 11 shows another embodiment of a set of rotors incorporated in the flow rate regulator 7. In addition to the circular gear 15, the triangular rice ball-shaped gear 15A shown in FIG. An oval gear 15B shown in FIG. 5B, an eyebrow type rotor 15C shown in FIG. 5C, and a crowbar type rotor 15D shown in FIG. The eyebrows-type rotor 15C and the clover-type rotor 15D are formed with a smooth outer periphery, and the eyebrows-type rotor 15C relatively rotates based on the engagement of the gear 15c attached to the shafts 32 and 33. Thus, the liquid delivery performance can be varied depending on the shape of the pair of rotors accommodated in the main body 12. In this case, since the pressure loss in the liquid pipe changes depending on the shape of the rotor, it is preferable to use a set of rotors according to physical properties such as the density and viscosity of the liquid to be delivered. Further, in the triangular rice ball-shaped gear 15A and the oval gear 15B, the pressure transmitted through the liquid effectively acts as an external force that promotes the rotation of the rotor, so that the pressure loss is reduced even when the viscosity of the liquid is large. Can be planned.
[0043]
In this beverage supply device, since the syrup pressurized with carbon dioxide gas is fed to the flow rate regulator 7 via the syrup supply line 6, the syrup does not flow backward to the syrup tank 2 side, and the rotor drive motor 7A is The force required to drive the pair of circular gears 15 is reduced by the pressurization of carbon dioxide gas, so that the rotor drive motor 7A can be reduced in size and the apparatus cost can be reduced. Further, it is possible to increase or decrease the syrup discharge amount to the required discharge amount by changing the rotation of the pair of circular gears 15.
[0044]
In such a configuration, for example, if the syrup pressurization amount setting after the installation of the device is set to a high pressure exceeding the control range of the rotor drive motor 7A, the flow rate regulator 7 cannot be controlled immediately after the syrup supply starts. As a result, not only a large amount of syrup is supplied, but also the rotor drive motor 7A is damaged or its life is shortened.
[0045]
According to the second embodiment described above, even if the set of circular gears 15 of the flow regulator 7 is driven by a syrup that flows in a load state exceeding its controllable range, It is possible to prevent the liquid delivery operation from deviating from the controllable range by converting the load exceeding the control range of the rotor drive motor 7A into electric power and discharging it, loss of delivery controllability due to abnormally high pressure, and delivery due to pressure fluctuations. The syrup can be accurately and stably delivered with a constant volume based on the rotation of the pair of circular gears 15. Further, by adopting a configuration in which rotation is electrically suppressed with respect to a load that exceeds the control range of the rotor drive motor 7A, a reduction gear can be eliminated, a compact device configuration can be achieved, and the rotor drive motor 7A can be stabilized. Can be rotated at a constant speed.
[0046]
In the second embodiment, the electromotive force is discharged by the discharge circuit 11A having the resistor 112 as a load that exceeds the control range of the rotor drive motor 7A. However, the present invention is not limited to this. For example, the energization control can be performed by combining a pulse control method, a switching control method, or a chopper control method and a resistor.
[0047]
In the second embodiment, the syrup delivery control in the beverage supply device has been described. However, the use thereof is not limited to the beverage supply device, and other liquids other than the syrup, for example, pressurized liquid such as oil It is also possible to apply to the transmission control. Further, it can be applied to delivery control when pressurizing powder and gas in addition to fluid and delivering them via piping, and delivery control when supplying liquid or powder by dropping based on gravity. .
[0048]
In the second embodiment, the syrup electromagnetic valve 8 is used as a valve device for supplying syrup to the multi-valve 9. However, the present invention is not limited to this. For example, the supply of syrup is controlled by opening and closing the valve with an electric motor. You may do it. Further, at least the inflow side pressure of the flow rate regulator 7 is monitored by a pressure gauge, and when the pressure becomes negative, the pressure increase control based on driving the carbon dioxide gas regulating valve 4 or the rotational speed of the rotor drive motor 7A. It is preferable to perform control such as reducing.
[0049]
Further, as another supply form of syrup, for example, a bag is filled with syrup, and a liquid raw material container (back-in box) in which the bag is stored in a transport box is installed in a beverage supply device, and the syrup itself The weight may be supplied to the flow rate regulator 7, and a fixed volume of syrup may be continuously sent out by the flow rate regulator 7 and supplied to the multi-valve 9 via the syrup solenoid valve 8.
[0050]
In the second embodiment described above, the control for the load exceeding the control range of the rotor drive motor 7A is performed based on the electrical control of the rotor drive motor 7A. However, when the electromotive force is detected. Alternatively, the rotation of the rotor drive motor 7A may be controlled by limiting the load with a valve device or the like.
[0051]
FIG. 12 partially shows a beverage supply apparatus according to the third embodiment of the present invention, and shows the electromotive force generated by the needle valve 30 provided on the upstream side of the flow rate regulator 7 and the rotor drive motor 7A. Accordingly, the configuration having the valve control unit 31 for controlling the opening degree of the needle valve 30 is different from that of the second embodiment, and the other configuration is the same as that of the second embodiment, so that it is redundantly described. Is omitted.
[0052]
When the pressure of the syrup sent to the flow rate regulator 7 via the syrup supply line 6 is large and an electromotive force is generated in the rotor drive motor 7A by the load, the valve control unit 31 detects the electromotive force. The needle valve 30 is driven. The needle valve 30 has a configuration in which the opening amount of the syrup passage portion is adjusted by a needle-like valve body, and is positioned at a position corresponding to the pressure control amount by a drive unit (not shown) capable of opening amount control such as a motor. Place the disc.
[0053]
According to the third embodiment described above, by driving the needle valve 30 according to the electromotive force generated by the rotor drive motor 7A, it is possible to limit the load applied to the flow rate regulator 7, thereby A fixed volume of syrup can be delivered stably.
[0054]
The needle valve 30 may be provided on the upstream side and the downstream side of the flow regulator 7 so as to reduce the load applied to the rotor drive motor 7A by using a valve device having a pressure limiting member other than the needle. Anyway. Further, when a liquid that seems to have a low viscosity is delivered, the needle valve 30 may be driven in advance to limit the opening amount of the syrup passing portion, and the needle valve 30 may be manually operated without using a drive mechanism. The opening amount of the syrup passage portion may be limited by operating at.
[0055]
In the first, second, and third embodiments, the flow rate regulator having a pair of rotors having the shape of a gear or the like has been described as a flow rate regulator for measuring a constant volume. Besides, a plurality of rotors may be combined. Moreover, the rotor may be provided independently as long as the liquid can be delivered at a constant volume.
[0056]
FIG. 13 shows another flow rate regulator according to the fourth embodiment, which is a vane type flow rate regulator 40 in which a plurality of vanes are provided radially on a rotating body that is rotationally driven by a motor. The vane type flow controller 40 includes a main body 41, an elliptical liquid container 42 formed in the main body 41, a rotating body 43 that is rotationally driven by a motor (not shown) in the main body 41, and a rotation A plurality of vanes 44 provided radially on the body 43, and a vane housing groove 45 that holds the vanes 44 so as to be expandable and contractable in the radial direction of the rotating body 43. The syrup is introduced into the space formed through the inflow pipe 6A, and the syrup is caused to flow out of the outflow pipe 6B based on the rotation of the rotating body 43.
[0057]
The vane 44 is urged so as to be in close contact with the inner wall of the liquid storage portion 42 by an elastic member such as a spring (not shown) stored in the vane storage groove 45, and the expansion / contraction amount is maximum at the large diameter portion of the ellipse, Minimum at the small diameter part.
[0058]
The syrup delivery operation by the vane-type flow regulator 40 is performed by causing the syrup to flow from the syrup supply line 6 through the inflow pipe 6A into the liquid container 42 and rotating the rotating body 43 in the direction of the arrow shown in the figure. A fixed volume of syrup is accommodated between the body 43, the two vanes 44, and the inner wall of the liquid storage portion 42, and is moved based on the rotation of the rotating body 43 to flow out from the outflow pipe 6 </ b> B. In the vane type flow controller 40, the syrup delivery operation is performed simultaneously on the left and right sides of the rotating body 43 shown in the drawing.
[0059]
According to the vane type flow rate regulator 40 according to the above-described fourth embodiment, liquid leaks due to an increase in gear backlash based on driving a set of rotors using gears, and the measurement accuracy is reduced. Without being generated, a constant volume of liquid can be supplied accurately and stably over a long period of time.
[0060]
According to the above-described delivery control method and delivery control apparatus of the present invention, the following operations and effects can be obtained.
(A) When the load state of the flow regulator 7 (based on the supply of pressurized syrup) exceeds the control range of the flow regulator 7, the amount of syrup delivered for the load exceeding the control range is limited. Therefore, even when a small motor is used as the rotor drive motor 7A, the syrup having a constant volume amount can be accurately obtained regardless of physical properties such as density and viscosity. In addition, it can be sent out stably.
[0061]
(B) By performing control so that a constant volume amount is sent out within the control range of the rotor drive motor 7A that rotates the rotor such as the circular gear 15 in the main body 12 of the flow rate regulator 7, during the sending operation. It is possible to vary the apparent reduction ratio from the rotor drive motor 7A to the rotor, eliminating the need for a speed reducer and making a compact device configuration, while maintaining a certain volume of syrup delivery performance and pressure fluctuations It can correspond to.
[0062]
(C) The rotor may be a set of rotors formed by combining a plurality of rotors, and a rotor having a shape corresponding to the delivery of syrup or other liquid can be selectively used.
[0063]
(D) When a load exceeding the rotation control range of the rotor drive motor 7A provided in the flow regulator 7 is applied to the rotor such as the circular gear 15, the rotor is braked by a brake according to the load. As a result, it is possible to mechanically or electrically prevent the rotor from rotating abnormally due to the increased load.
[0064]
(E) When a load exceeding the rotation control range of the rotor drive motor 7A is applied to the rotor such as the circular gear 15, a brake is provided that generates a braking force according to the load based on the torque characteristics of the motor. Accordingly, it is possible to simplify the configuration and reduce the size of the apparatus without using a device such as a detector that detects the load, and to reduce the cost of the apparatus.
[0065]
(F) Since the electromotive force generated when the rotor drive motor 7A is driven based on a load exceeding the rotation control range is discharged as a brake by the discharge circuit 11A, the load can be quickly eliminated. Occurrence of flow rate fluctuations based on the load can be suppressed.
[0066]
(G) The load when starting the rotor drive motor 7A can be reduced by turning on the brake after a predetermined time has elapsed from the start of the drive of the rotor drive motor 7A. Further, by taking into account the time response based on the physical properties such as the density and viscosity of the liquid to be delivered, it is possible to prevent the rotor drive motor 7A from being damaged and having a reduced life.
[0067]
(H) Since a switching circuit for controlling the brake is provided, the discharge circuit 11A is turned on when the energization of the rotor drive motor 7A is turned off, and the discharge circuit 11A is turned off when the energization is turned on. The load can be reduced, the brake can be efficiently applied to the load exceeding the rotation control range of the rotor drive motor 7A, and stable delivery control can be performed over a long period of time.
[0068]
(I) Since switching based on PWM control is performed to control the discharge circuit 11A to brake the rotor drive motor 7A, the rotation time and brake operation time of the rotor drive motor 7A are set to the pulse width. Can be set appropriately.
[0069]
(J) Since the syrup to be controlled for sending is pressurized with carbon dioxide gas and flows into the flow rate regulator 7 in a predetermined pressurizing state, the driving load of the rotor drive motor 7A at the time of sending syrup can be reduced. In addition, it is possible to prevent variations in delivery performance based on differences in physical properties such as a syrup having a high viscosity and a syrup having a low viscosity.
[0070]
【The invention's effect】
As described above, according to the liquid delivery apparatus and the liquid delivery method of the present invention, the supply medium is piped at a constant volume while restricting the delivery amount of the supply medium against a load that is larger than the control range of the delivery amount regulator. Since the liquid is sent to the road, even if the physical properties and the delivery amount of the liquid fluctuate, it is possible to realize a stable liquid delivery control of a certain amount, eliminating the need for selecting and assembling parts according to the reduction ratio. A compact size can be realized and a certain amount of liquid can be delivered stably.
[Brief description of the drawings]
FIG. 1 is a partial configuration diagram showing a beverage supply apparatus as a liquid delivery apparatus according to a first embodiment of the present invention.
FIGS. 2A and 2B show a constant displacement flow rate regulator according to a first embodiment, where FIG. 2A is a plan view, FIG. 2B is a side view, and FIG. 2C is a cross-sectional view taken along a line AA in FIG.
FIG. 3 is an explanatory diagram showing a liquid discharge amount of a syrup supply line provided with a constant volume flow rate regulator in the first embodiment.
FIG. 4 is a circuit diagram showing a drive load control unit in the first embodiment;
FIG. 5 is a control block diagram of the beverage supply device according to the first embodiment.
FIG. 6 is a partial configuration diagram showing a beverage supply device as a liquid delivery device according to a second embodiment of the present invention.
FIG. 7 is a circuit diagram showing a discharge circuit in a second embodiment.
FIG. 8 is a schematic configuration diagram showing a drive system of a flow rate regulator in the second embodiment.
FIGS. 9A and 9B show pulse waveforms at the time of syrup transmission in the second embodiment, wherein FIG. 9A is a pulse waveform diagram including a ripple L during off-pulse, and FIG. 9B is a pulse waveform diagram in which ripple is eliminated;
FIG. 10 is a characteristic diagram of current flowing through a rotor drive motor according to the second embodiment.
FIGS. 11A to 11D are partial cross-sectional views showing another embodiment of a pair of rotors built in a flow regulator; FIGS.
FIG. 12 is a partial configuration diagram showing a beverage supply device as a liquid delivery device according to a third embodiment of the present invention.
FIG. 13 is a schematic configuration diagram showing a vane type flow rate regulator according to a fourth embodiment of the present invention.
[Explanation of symbols]
1, carbon dioxide cylinder 2, syrup tank 3, carbon dioxide supply line
4, CO2 adjustment valve 5, cooling coil 6, syrup supply line
6A, inflow pipe 6B, outflow pipe
7. Constant volume flow regulator 7A, rotor drive motor 7B, rotating shaft
8, syrup solenoid valve 9, multi-valve 10, current-carrying part
11. Drive load controller 11A, discharge circuit
12, body 12a, inflow part 12b, outflow part 13, speed reducer
14, cover part 15, circular gear 15A, triangular rice ball-shaped gear
15B, oval gear 15C, eyebrows rotor
15D, crowbar rotor 15c, gear 16, shaft 16A, gear
17, shaft 18, magnet encoder 19, substrate 20, pinion gear
21, bearing member 22, seal member 23, input device
24, sales switch 25, memory 26, timer 27, main control unit
30, needle valve 31, valve control unit 32, shaft
40, vane type flow regulator 41, main body 42, liquid container
43, rotating body 44, vane 45, vane receiving groove
107, resistor 110, transistor 111, resistor
112, transistor 112, resistor 113, switching unit
114, power transistor 115, variable resistor

Claims (2)

A body having a inlet mouth and the outlet of the pressurized pressurized liquid, to flow out from the outlet at a constant volume amount the pressurized liquid flowing into the body from the inlet by being rotated is housed in the body A rotor, and a delivery amount adjuster comprising a drive motor for rotationally driving the rotor;
A control unit that outputs an energization signal to an energization unit that supplies electric power to the drive motor ;
A first transistor for supplying power to the drive motor; a resistor for discharging a current generated in the drive motor; a second transistor for turning on a circuit provided with the resistor; A discharge circuit having a switching unit that performs a switching operation for the first transistor and the second transistor based on an energization signal input from the unit,
Based on PWM (Pulse Width Modulation) control, the discharge circuit turns on the first transistor when the drive motor is turned on, turns off the second transistor, and turns off the first transistor when the drive motor is turned off. The transistor is turned off and the second transistor is turned on.
When the energization of the drive motor is turned off, the resistor is discharged with electric power based on the electromotive force generated by the pressure of the pressurized liquid applied to the drive motor via the rotor, thereby eliminating the ripple voltage. A transmission control device characterized by the above. The rotor, the transmission control device as set forth in claim 1, wherein claims, characterized in that a set of rotors that are formed by combining a plurality of rotor.

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