JP2011162241A - Beverage feeding apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a beverage feeding apparatus for processing a beverage raw material by being stirred with a stirring blade, which prevents a lack of stirring such as remaining of unmelted raw material or the like by controlling the number of rotation of the stirring blade to be a predetermined number certainly. <P>SOLUTION: In the beverage feeding apparatus 1 to pour a beverage cooked with a beverage stirring apparatus 20 into a container, the beverage stirring apparatus 20 includes a stirring container 12 to stir and mix the beverage raw material and hot water, the stirring blade 15 in the stirring container, a stirring motor 13 capable of PWM controlling to drive the stirring blade 15, and stirring motor control means 21, wherein the stirring motor control means 21 includes rotation number setting means 26 for the stirring motor 13, PWM controlling means 23 to control the rotation number, actual rotation number measurement means 27 to measure the rotation number actually and rotation comparison means 28 to compare a rotation number measured actually with a setting rotation number and the PWM controlling means 23 controls current-carrying rate of electric voltage supplied so that the rotation number of the stirring motor 13 has the setting rotation number based on a comparison result by the rotation comparison means. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a beverage supply device including a beverage stirring device that stirs and mixes beverage ingredients and hot water to cook a beverage.

  As a conventional beverage supply device of this type, there is known a beverage supply device as described in Japanese Patent Application Laid-Open No. 2008-217056 (Patent Document 1). The beverage providing apparatus described in Patent Document 1 includes a mixing ball that stirs and mixes beverage ingredients and hot water to cook a beverage, and rotates a stirring blade for stirring the beverage. The rotation speed (number of rotations) of the stirring motor can be set manually, and can be set to an automatic mode in which the rotation speed is automatically set according to the amount of beverage to be cooked. When the automatic mode is set, the smaller the amount of beverage that is stirred and mixed in the mixing ball, the faster the rotation speed of the stirring motor is set. The rotation speed of the stirring motor is set to be slow. According to this, when the beverage is agitated, mixed and cooked by rotating the stirring blade in the mixing ball and the beverage is cooked in a relatively large amount relative to the volume of the mixing ball, the stirring blade is rotated. Slow down to prevent the water surface from rising along the inner wall of the mixing ball, thereby preventing the beverage from overflowing from the top of the mixing ball, and to the volume of the mixing ball. When the amount of cooking is relatively small, the rotating speed of the stirring blades can be increased to stir and mix, and the beverage can be cooked in a short time. That is, the rotation speed of the agitation motor can be set appropriately according to the capacity of the mixing ball, the amount of cooking of the beverage, and the like, and the beverage in the mixing ball can be appropriately agitated.

JP 2008-217056 A

  By the way, in the drink providing apparatus described in Patent Document 1, when the rotation speed of the stirring motor is controlled, the voltage supplied to the stirring motor that is a DC motor is pulsed, and the ratio between the energization period and the energization pause period is used. The rotation speed is controlled (PWM (Pulse Width Modulation) control) by changing a certain energization rate (duty ratio) and changing the average voltage. In addition, this energization rate is determined in advance when an energization rate necessary for outputting a predetermined rotation speed in the agitation motor is determined, and when the agitation motor is rotated at a target rotation speed in a conventional beverage providing device, Based on the energization rate determined corresponding to the rotation speed, the energization rate corresponding to the rotation speed is set by the control means, and the stirring motor is driven to rotate.

  However, the conventional agitation motor that is rotationally driven in this way controls the energization rate and sets the rotation speed that is output as a result. Due to load fluctuations and the like resulting from differences in the above, the actual rotation speed does not become the set rotation speed, and there is a problem that insufficient stirring such as unmelted beverage ingredients occurs.

  In order to cope with such a problem, the present invention, in a beverage stirring apparatus for cooking beverages by stirring and mixing raw materials and hot water with a stirring blade, the rotational speed of a stirring motor that rotationally drives the stirring blade, An object of the present invention is to provide a beverage providing device provided with a beverage agitating device that can be controlled to ensure a set rotational speed and prevent insufficient agitation such as unmelted beverage ingredients.

  In order to solve the above-mentioned problem, the invention according to claim 1 is a beverage supply device that pours a beverage cooked by a beverage stirring device into a container such as a cup, and the beverage stirring device stirs the raw material of beverage and hot water. A stirring vessel for mixing, a stirring blade provided in the stirring vessel, a PWM controllable stirring motor for rotationally driving the stirring blade, and a stirring motor control means for controlling the stirring motor, The agitation motor control means includes a rotation speed setting means for setting the rotation speed of the agitation motor, a PWM control means for controlling the rotation speed of the agitation motor, a rotation speed measurement means for actually measuring the rotation speed of the agitation motor, A rotation comparison means for comparing the rotation speed set by the rotation speed setting means with the rotation speed actually measured by the rotation speed measurement means; and the PWM control means comprises the rotation comparison means. Based on the comparison result, so that the rotational speed rotational speed is set for the stirring motor, and controls the duty ratio of the voltage supplied to the stirring motor. According to this, the agitation motor can be reliably rotated at the set rotational speed.

  The invention according to claim 2 is the beverage supply and distilling device according to claim 1, wherein the rotational speed measurement means includes a current detection circuit of the agitation motor, and the rotational speed is detected from a current waveform detected thereby. Is to measure. According to this, the actual rotation speed of the stirring motor can be accurately measured.

  As described above, according to the first aspect of the present invention, since the stirring motor can be reliably rotated at the set number of rotations, insufficient stirring such as unmelted beverage ingredients can be prevented. A beverage providing device provided with a beverage stirring device can be provided.

  Further, according to the second aspect of the present invention, since the actual rotational speed of the stirring motor can be accurately measured, the rotational speed of the stirring motor can be controlled to the set rotational speed based on that. That is, it is possible to provide a beverage providing apparatus including a beverage agitating device that can reliably prevent insufficient agitation such as unmelted beverage ingredients.

It is a schematic block diagram which shows the drink supply apparatus which concerns on embodiment of this invention. In the drink supply apparatus which concerns on embodiment of this invention, it is a block diagram which shows the principal part structure of the stirring motor control means which controls the stirring motor which comprises a drink stirring apparatus. (A) is a current waveform diagram which shows the electric current of the stirring motor which comprises a drink stirring apparatus in the drink supply apparatus which concerns on embodiment of this invention, (b) is pulse-converting the electric current of the stirring motor based on a threshold value It is a figure which shows the state which carried out. It is a block diagram which shows the control structure of the rotation speed actual measurement means for controlling a drink stirring apparatus in the drink supply apparatus which concerns on embodiment of this invention.

Hereinafter, a beverage supply device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram showing a beverage supply device 1 according to an embodiment of the present invention. In the figure, 2 is a powder raw material supply means for beverages, 3 is a raw material container for storing powder raw materials for beverages by type, and 4 is a raw material discharge motor for discharging a necessary amount of powder raw materials stored in the raw material container 3 respectively. is there. 5 is a hot water supply means; 6 is a hot water storage tank for storing hot water; 7 is a cold water storage tank for storing cold water; ) A hot water solenoid valve for supplying to 12 and 9 is a cold water solenoid valve for similarly supplying cold water in the cold water storage tank 7 to the mixing ball 12. The mixing ball 12 includes a powder raw material supplied from the raw material container 3 by the raw material discharge motor 4 via the raw material discharge shooter 10, hot water supplied from the hot water storage tank 6 via the hot water electromagnetic valve 8, and a cold water storage tank 7. The cold water supplied from the cold water electromagnetic valve 9 is stirred and mixed by the stirring blade 15 that is rotationally driven by the stirring motor 13 to cook the beverage, and this is poured into a sales container 17 such as a cup. is there. Reference numeral 11 denotes a beverage discharge pipe for discharging a beverage exceeding a predetermined water level outward so that the beverage in the mixing ball 12 does not overflow. The beverage discharged from the beverage discharge pipe 11 is guided to a sales container (container) 17 such as a paper cup for sale. Reference numeral 16 denotes a sales container storage device that stores a sales container 17 such as a paper cup and supplies it onto the mounting table 18 when selling beverages. Here, the sales container storage device 16 stores a plurality of sales containers such as paper cups of different sizes, and supplies a sales container of a size designated at the time of beverage sales onto the mounting table 18. In the mixing ball 12, an amount of beverage that matches the size of the sales container 17 is cooked.

  FIG. 2 shows the beverage supply device 1 of the present embodiment configured as described above, and the stirring motor 13 constituting the beverage stirring device 20 (see FIG. 1) that stirs and mixes the beverage ingredients and hot water to cook the beverage. It is a block diagram which shows the principal part structure of the agitation motor control means 21 for controlling this.

  As shown in the figure, the rotation speed of the stirring motor 13 is controlled via an output unit 24 by a PWM control unit (PWM control means) 23 for controlling the stirring motor 13. Here, in the storage unit 25, an energization rate (hereinafter referred to as a PWM value) serving as a reference for the voltage supplied to the agitation motor 13, a reference rotation speed output corresponding thereto, and a rotation speed with respect to a change in the PWM value. The rate of increase / decrease is stored. Moreover, the rotation speed setting means 26 sets the rotation speed of the stirring motor 13 that rotationally drives the stirring blade 15 according to the type of beverage to be cooked by the beverage stirring device 20 and the amount to be cooked. The rotational speed measurement means 27 actually measures the actual rotational speed of the stirring motor 13. The rotation comparison means 28 compares the rotation speed of the stirring motor 13 measured by the rotation speed measurement means 27 with the set rotation speed set by the rotation speed setting means 26 and notifies the PWM control unit 23 of the result. Then, the PWM control unit 23 increases or decreases the PWM value based on the rotation speed comparison result notified by the rotation comparison unit 28 so that the actual rotation speed of the stirring motor 13 follows the set rotation speed. Control. For example, when the agitation motor 13 is started, since the actual rotation speed of the agitation motor is “0”, the PWM control unit 23 applies the PWM value corresponding to the set rotation speed stored in the storage unit. The motor 13 is controlled. After the agitation motor 13 rotates, the PWM control unit 23 calculates a PWM value corresponding to the difference between the actual rotation speed and the set rotation speed of the agitation motor 13 from the reference data stored in the storage unit 25. Based on this, the PWM value is increased or decreased to control the stirring motor 13. Thereby, the stirring motor 13 can be reliably rotated at the set number of rotations.

  Next, the rotational speed measurement means 27 for actually measuring the rotational speed of the stirring motor 13 will be described. FIG. 3A is a current waveform diagram showing a waveform of a current flowing through the stirring motor 13 according to the embodiment of the present invention. As shown in the figure, the current flowing through the stirring motor 13 pulsates at a period corresponding to the number of rotations due to a phase change of a coil (not shown) wound around a core constituting the stirring motor 13. FIG. 4 is a block diagram showing a control configuration of the rotational speed actual measuring means 27 for measuring the rotational speed using the characteristics of the current flowing through the stirring motor 13. As shown in the figure, in this circuit, a current threshold value (see FIG. 3A) is appropriately set so that the protruding portion of the pulsating current can be detected, and the portion of the circuit exceeding the voltage V1 corresponding to the threshold value is set. The voltage is pulse-converted by the comparator 31 in the microcomputer 32 (see FIG. 3B), the number of pulses per unit time is counted by the pulse counter 34, and the number of revolutions of the stirring motor 13 is measured. According to this, the actual number of revolutions can be accurately measured based on the actual current waveform of the stirring motor 13.

  As described above, in the beverage supply apparatus 1 according to the embodiment of the present invention, the beverage stirring device 20 that stirs and mixes the beverage ingredients and hot water to cook the beverage is a mixing ball that stirs and mixes the beverage ingredients and hot water. 12, a stirring blade 15 inside thereof, a PWM-controllable stirring motor 13 that rotationally drives the stirring blade 15, and a stirring motor control means 21 that controls the stirring motor 13, and the stirring motor control means 21 further includes: , A rotation speed setting means 26 for setting the rotation speed of the stirring motor 13, a PWM control unit 23 for controlling the rotation speed of the stirring motor 13, a rotation speed measurement means 27 for actually measuring the rotation speed of the stirring motor 13, and a rotation speed And a rotation comparison means 28 for comparing the rotation speed set by the setting means 26 with the rotation speed actually measured by the rotation speed actual measurement means 27, and the PWM control unit 23 includes a rotation comparison means. Based on 8 comparison result, as the speed of the stirring motor 13 is speed threshold, controls the duty ratio of the voltage supplied to the stirring motor 13. And since the stirring motor 13 can be reliably rotated by the set rotation speed by this, in the mixing ball | bowl 12, it is possible to prevent insufficient stirring such as unmelted beverage ingredients.

  Further, the rotational speed actual measuring means 27 for actually measuring the rotational speed of the stirring motor 13 includes a current detection circuit for the stirring motor 13 and measures the rotational speed from the waveform of the current detected thereby. It is possible to accurately measure the actual number of revolutions. That is, based on this, since the rotation speed of the agitation motor 13 can be controlled to the set rotation speed, the beverage agitation device 20 that can reliably prevent insufficient agitation such as unmelted beverage ingredients is provided. The beverage providing device 1 can be provided.

  Needless to say, the present invention is not limited to the apparatus shown in this embodiment mode, and application changes can be made within the scope of the spirit of the present invention. For example, the shape and arrangement of the mixing balls 12 and the stirring blades 15, the control configuration of the stirring motor control means 21, and the like are appropriately set according to the aspect and configuration of the beverage supply device that implements the present invention. .

1 Beverage supply device 12 Mixing ball (stirring container)
13 Stirring motor 15 Stirring blade 17 Sales container (container)
20 Beverage Stirrer 21 Stirring Motor Control Unit 23 PWM Control Unit (PWM Control Unit)
26 rotational speed setting means 27 rotational speed actual measurement means 28 rotational comparison means

Claims (2)

  A beverage supply device for pouring a beverage cooked by a beverage agitation device into a container such as a cup, wherein the beverage agitation device is provided in an agitation container for agitating and mixing beverage ingredients and hot water, and the agitation container A stirring blade, a PWM-controllable stirring motor that rotationally drives the stirring blade, and a stirring motor control unit that controls the stirring motor, wherein the stirring motor control unit sets the number of rotations of the stirring motor Rotational speed setting means, PWM control means for controlling the rotational speed of the stirring motor, rotational speed actual measuring means for actually measuring the rotational speed of the stirring motor, rotational speed set by the rotational speed setting means and the rotational speed Rotation comparison means for comparing the rotation speeds actually measured by the measurement means, and the PWM control means determines the rotation speed of the stirring motor based on the comparison result of the rotation comparison means. As the rotational speed is constant, the beverage supply device and controls the duty ratio of the voltage supplied to the stirring motor.   The beverage supply device according to claim 1, wherein the rotation speed actual measurement unit includes a current detection circuit of the stirring motor and measures the rotation speed from a waveform of a current detected thereby.

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