JP4419326B2 - Foaming liquid discharge device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a foaming liquid discharge apparatus, and more particularly to a foaming liquid discharge apparatus capable of discharging a well-cooled beverage continuously and in large quantities.
[0002]
[Prior art]
2. Description of the Related Art A foaming liquid discharge device that supplies soft drinks such as draft beer containing carbon dioxide gas from a storage container such as a barrel via a cooling device is known. The foaming liquid discharge device will be described with reference to FIGS. 13 and 14 by taking a draft beer discharge device as an example. Here, FIG. 13 is an explanatory diagram showing the overall configuration of a conventional foaming liquid discharge device, and FIG. 14 is a circuit diagram showing the configuration of the motor.
[0003]
The draft beer discharge device supplies pressurized carbon dioxide gas from the carbon dioxide gas cylinder 2 into the barrel 1 filled with draft beer, and sends draft draft beer in the barrel 1 to the cooling coil 4 in the cooling device 3 by the pressure of the supplied carbon dioxide gas. The draft beer cooled in the cooling coil 4 is discharged from the valve 5 to the mug 6. The carbon dioxide cylinder 2 and the barrel 1 are connected by a pipe 7. The pipe 7 of the barrel 1 and the cooling coil 4 in the cooling device 3 are connected by a joint 9. The cooling coil 4 and the valve 5 are also connected by a joint 9.
[0004]
In the water tank 11 of the cooling device 3, an ice storage unit 13 is formed by an evaporation pipe 14 in order to cool the cooling water 12. The cooling water 12 is agitated by a stirring blade 15 provided at the tip of a rotating shaft 16 a that is rotated by a motor 16. As shown in FIG. 14, the motor 16 includes a rotor 16A, a main winding 16B, an auxiliary winding 16C, and a capacitor 16D, and is operated at a constant rotational speed.
[0005]
[Problems to be solved by the invention]
In order to discharge a well-cooled beverage continuously and in large quantities, the cooling effect of the cooling coil 4 into which the beverage having a high temperature flows, that is, the cooling effect at the bottom of the water tank 11 is enhanced (the flow rate of the cooling water 12). It is necessary that the cooling effect is not reduced in the entire water tank 11 (the flow rate of the cooling water 12 is not reduced).
[0006]
However, the stirring blade 15 of the conventional foaming liquid discharge device is often disposed at a substantially central portion (set to about 166 mm in the test example) in the height direction in the water tank 11, and the cooling water by stirring is often provided. The flow rate is substantially constant regardless of the beverage discharge rate. Therefore, when the beverage is discharged continuously and in large quantities, there is a problem that heat exchange between the cooling water and the beverage becomes insufficient, and a well-cooled beverage cannot be discharged.
[0007]
On the other hand, a means for dealing with the motor 16 having a high rotational speed is conceivable. However, it is not preferable to employ such means because the power consumption increases and the cost of the apparatus increases. Therefore, it has been desired to provide means for improving the stirring performance of the cooling water 12 without using the same motor 16 or a motor having the same power consumption as before and increasing the power consumption.
[0008]
This invention is made in view of the above, Comprising: It aims at providing the foaming liquid discharge apparatus which can discharge a well-cooled drink continuously and in large quantities, improving cooling performance significantly. .
[0009]
[Means for Solving the Problems]
In order to achieve the above-mentioned object, a foaming liquid discharge device according to claim 1 of the present invention stirs the cooling water and a beverage pipe for cooling the beverage in the pipe by exchanging heat with the cooling water in the water tank. The foaming liquid discharge apparatus provided with at least a stirring blade is provided with blade height varying means for varying the height of the stirring blade in the water tank.
[0010]
Therefore, by making the height of the stirring blade variable, the flow rate of cooling water can be controlled, and the cooling performance can be adjusted optimally by changing the amount of melting of ice, so the cooling performance has been greatly improved and cooled well. Beverages can be discharged continuously and in large quantities.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of a foaming liquid discharge apparatus according to the present invention will be described in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.
[0017]
Embodiment 1 FIG.
1 is an explanatory view showing a foaming liquid discharging apparatus according to Embodiment 1 of the present invention, FIG. 2 is a perspective view showing an agitating blade, and FIG. 3 is an explanatory view showing the entire structure of the foaming liquid discharging apparatus, FIG. 4 to 6 are graphs showing the cooling performance obtained by the continuous discharge simple test (the time during which the beverage at the standard temperature can be continuously discharged), and FIG. 7 shows the relationship between the blade height and the ice storage surface flow velocity. FIG. 8 is a graph showing the relationship (cooling performance) between the blade height and the time required to reach the specified water temperature and drinking temperature. In addition, the same code | symbol is attached | subjected to the member which is the same as that of the member demonstrated in the said prior art, or duplication description is abbreviate | omitted or simplified.
[0018]
As shown in FIG. 2, the stirring blade 15 is formed in the shape of an axial flow impeller generally used in a blower or the like. This stirring blade 15 was proposed by the present applicant in Japanese Patent Application No. 2000-331367. The boss 15b of the stirring blade 15 is formed in a shape in which a hemisphere is extended at the top of a cylinder. Thereby, the inflow resistance of the cooling water 12 flowing in from the upper part of the stirring blade 15 can be reduced.
[0019]
The wing portion 15a is formed as an arc wing, but may be formed as a NACA wing, a control diffusion wing, a double arc wing, a multiple arc wing, or the like. The boss ratio of the stirring blade 15 (= the outer diameter of the boss portion 15b / the outer diameter of the blade portion 15a) is preferably set in the range of 0.4 to 0.6. Although the stirring blade 15 is conceptually illustrated in FIG. 1, the stirring blade 15 is provided.
[0020]
As shown in FIG. 1, the motor 16 is supported by an actuator 30 that can arbitrarily change the height of the stirring blade 15, and the actuator 30 is provided in a lid portion of the water tank 11. The driving method of the actuator 30 may be, for example, a hydraulic type, a motor driving type, or a manual type, and can be configured by a known technique.
[0021]
Next, the cooling performance of the beverage according to the present invention will be described based on the test results. When an intermittent test was conducted for 2 seconds using the stirring blade 15 having a boss ratio of 0.47, the results shown in FIGS. 4 to 6 were obtained for each blade height. 4 shows a case where the blade height is 166 mm (conventional height), FIG. 5 shows a case where the blade height is 72 mm, and FIG. 6 shows a case where the blade height is 20 mm. ing. Further, as shown in FIG. 3, T1 is the inlet beverage temperature of the valve 5, T2 is the representative temperature of the cooling water 12 in the water tank 11, and T3 is the temperature difference between these T1 and T2. Furthermore, in FIGS. 4-6, K1 is the time which can discharge the drink within specification temperature, and K2 is the time which the cooling water 12 can maintain the said specification drink temperature.
[0022]
Further, based on the above results, the relationship between the blade height and the surface flow velocity of the ice storage section 13 is shown in FIG. 7, and the relationship (cooling performance) between the blade height and the arrival time to the specified water temperature and drinking temperature is shown in FIG. Shown in As shown in FIG. 7, it can be seen that the flow rate of the cooling water in the ice storage unit 13 increases almost proportionally as the height of the stirring blade 15 decreases. In general, since the fluid velocity and the heat transfer coefficient are in a proportional relationship, the heat transfer coefficient between the cooling water and ice is improved and the ice melting amount is increased.
[0023]
Further, as shown in FIG. 8, it can be seen that the time to reach the specified temperature (8 ° C.) becomes longer as the height of the stirring blade 15 becomes lower for both the water temperature of the water tank and the beverage temperature. That is, it can be seen that the beverage can be discharged for a long time within the specified temperature.
[0024]
Thus, since the cooling performance of the beverage is substantially proportional to the height of the stirring blade 15, it can be controlled by changing the height of the stirring blade 15. That is, by using the same motor 16 as in the past, the cooling performance can be greatly improved without increasing the power consumption, and a well-cooled beverage can be discharged continuously and in large quantities.
[0025]
As described above, according to the foaming liquid discharge device according to the first embodiment, while using the conventional motor 16, the cooling performance is greatly improved, and a well-chilled beverage is discharged continuously and in large quantities. be able to.
[0026]
In the first embodiment, the present invention has been described as being applied to a draft beer discharge device. However, the present invention is not limited to this, and may be applied to other soft drink discharge devices containing carbon dioxide gas. it can. Moreover, although demonstrated using the stirring blade 15 proposed in Japanese Patent Application No. 2000-331367, it is not limited to this, You may use the conventional stirring blade.
[0027]
Embodiment 2. FIG.
FIG. 9 is an explanatory view showing a foaming liquid discharge apparatus according to Embodiment 2 of the present invention. The motor 16 includes a rotor 41 and a coil 42 in the case 40, a fixing member 43 that rotates together with the rotor 41, and fixes the inserted rotating shaft 16 a with a set screw 44, and a bearing 45. That is, the height of the stirring blade 15 can be manually changed by sliding the rotary shaft 16a up and down within the fixing member 43 and fixing it with the set screw 44 at an arbitrary position. The same effect as in the case of Form 1 can be expected.
[0028]
As described above, according to the foaming liquid discharge apparatus according to the second embodiment, the cooling performance can be greatly improved, and a well-chilled beverage can be discharged continuously and in large quantities.
[0029]
Embodiment 3 FIG.
FIG. 10 is an explanatory view showing a coil tap changeover switch of a motor of a foaming liquid discharge apparatus according to a third embodiment of the present invention, FIG. 11 is an explanatory view showing the entire structure of the foaming liquid discharge apparatus, and FIG. It is a flowchart which shows control of the motor which drives a wing | blade.
[0030]
As shown in FIGS. 10 and 11, the changeover switch 50 is controlled by the controller 60 in accordance with opening and closing of the valve 5. In addition, the output means of the opening / closing signal of the valve 5 can be configured by a known technique described in JP 2000-185798 A, for example.
[0031]
The motor 16 is controlled in synchronism with the high speed rotation when the valve 5 is opened and the low speed rotation when the valve 5 is closed by switching the changeover switch 50 by the controller 60. The controller 60 includes a counter and also monitors the opening / closing time of the valve 5.
[0032]
Next, the control operation will be described with reference to FIG. The motor 16 normally rotates at a low speed (step S10). The controller 60 monitors the open / closed state of the valve 5 (step S11). If the controller 60 determines that the valve 5 is open (Yes in step S12), the controller 60 switches the changeover switch 50 to rotate the motor 16 on the high speed side to cool it. Increase performance (step S13).
[0033]
Then, the open / close state of the valve 5 is monitored (step S14). If it is determined that the valve 5 is closed (Yes in step S15), the controller 60 measures the time during which the valve 5 is closed by a counter (step S16). For example, when the valve is opened within 5 seconds (Yes at Step S17), it is determined that a large amount of beverage is continuously discharged, and the motor 16 is rotated on the high speed side to improve the cooling performance (Step S18, Step S16).
[0034]
On the other hand, if the valve 5 has been closed for 5 seconds or longer (No at Step S17), it is allowed to stand by at a normal low-speed rotation (Step S19), and the amount of ice storage can be secured by avoiding heat exchange more than necessary. Can be provided. If a negative determination is made in the opening / closing determination of the valve 5 in steps S12 and S15, monitoring by the controller 60 is continued (steps S11 and S14).
[0035]
In this way, the cooling performance is improved at the time of sale, and a well-cooled beverage can be discharged in large quantities and continuously. During standby, the ice storage amount is ensured by avoiding excessive heat exchange, and a large quantity and continuous discharge. Sometimes you can be prepared.
[0036]
As described above, according to the foaming liquid discharge device according to the third embodiment, the cooling performance can be greatly improved, and a well-chilled beverage can be discharged continuously and in large quantities.
[0037]
【The invention's effect】
As explained above, according to the foaming liquid discharge apparatus (Claim 1) of the present invention, the beverage piping for cooling the beverage in the pipe by heat exchange with the cooling water in the aquarium, and the cooling water are agitated. In the foaming liquid discharge device provided with at least the stirring blade, since the blade height variable means for changing the height of the stirring blade in the water tank is provided, cooling is achieved by making the height of the stirring blade variable. Cooling performance can be adjusted optimally by controlling the flow rate of water and changing the melting amount of ice. Therefore, the cooling performance can be greatly improved, and a well-cooled beverage can be discharged continuously and in large quantities.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a foaming liquid discharge apparatus according to a first embodiment of the present invention.
FIG. 2 is a perspective view showing a stirring blade.
FIG. 3 is an explanatory diagram showing an overall configuration of a foaming liquid discharge apparatus.
FIG. 4 is a graph showing cooling performance (a time during which a beverage at a standard temperature can be continuously discharged) obtained by a simple continuous discharge test.
FIG. 5 is a graph showing the cooling performance (time during which a beverage at a standard temperature can be continuously discharged) obtained by a simple continuous discharge test.
FIG. 6 is a graph showing the cooling performance (the time during which a beverage at a standard temperature can be continuously discharged) obtained by a simple continuous discharge test.
FIG. 7 is a graph showing the relationship between blade height and ice storage surface velocity.
FIG. 8 is a graph showing the relationship (cooling performance) between the blade height and the arrival time to the specified water temperature / drinking temperature.
FIG. 9 is an explanatory view showing a foaming liquid discharging apparatus according to a second embodiment of the present invention.
FIG. 10 is an explanatory view showing a coil tap changeover switch of a motor of a foaming liquid discharge apparatus according to a third embodiment of the present invention.
FIG. 11 is an explanatory diagram showing the overall configuration of the foaming liquid discharge device.
FIG. 12 is a flowchart showing control of a motor that drives a stirring blade.
FIG. 13 is an explanatory view showing an overall configuration of a conventional foaming liquid discharge apparatus.
FIG. 14 is a circuit diagram showing a configuration of a motor.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Barrel 2 Carbon dioxide cylinder 3 Cooling device 4 Cooling coil 5 Valve 6 Mug 11 Water tank 12 Cooling water 13 Ice storage part 14 Evaporating pipe 15 Stirring blade 16 Motor 16a Rotating shaft 30 Actuator 40 Case 41 Rotor 42 Coil 43 Fixing member 44 Set screw 45 Bearing 50 changeover switch 60 controller

Claims (1)

Beverage piping that cools the beverage in the pipe by exchanging heat with the cooling water in the aquarium,
A stirring blade for stirring the cooling water;
In the foaming liquid discharge device comprising at least
A foaming liquid discharging apparatus comprising: a blade height varying means for varying the height of the stirring blade in the water tank.

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