JPS61152594A - Drink feeder - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to improvements in beverage dispensing devices such as dispensers and cup vendors for dispensing carbonated beverages.

Conventional configuration and its problems In devices that generate carbonated water by introducing pressurized water from a pump into a carbonator pressurized with carbon dioxide gas, it is known that the quality of carbonated water varies depending on the temperature of the pressurized water introduced. It is being A conventional beverage dispensing device of this type is shown in FIG.

1 is a pump whose inlet is directly connected to the water supply pipe, and the acid is connected to the distern outlet pipe, and the discharge pressure is high. 2
3 is a cooling water tank equipped with a cooling device, and 3 is a carbonator that is cooled in the water tank 2. Carbon dioxide gas in a carbon dioxide gas cylinder 4 is pressurized at a constant pressure through a gas pressure regulator 6t. 6 is a cooling water pipe for cooling the pressurized water from pump 1 in cooling water tank 2, 7 is a solenoid valve installed in the water pipe between the cooling water pipe and carbonator 3, and 8 is a reverse valve installed in the water pipe between solenoid valve 7 and carbonator 3. With the stop valve, the pressurized water of the pump 1 is transferred to the cooling water pipe 6° and the solenoid valve 7. It is supplied into the carbonator 3 through the check valve 8.

A water level control device 9 is provided in the carbonator 3 to detect a lower limit water level and an upper limit water level to control the introduction of pressurized water into the carbonator 3.

That is, when the water level in the carbonator 3 reaches the lower limit water level, the solenoid valve 7 is opened to introduce pressurized water by the pump 1, and when the water level reaches the upper limit water level, the solenoid valve 7t is closed and the introduction is stopped.

However, the pump 1 has a high discharge pressure, and pressurized water instantly passes through the cooling water pipe 6 when the solenoid valve 7 is opened, so the upper and lower limit water levels of the water level control device 9 are set wide. When the amount of water is increased, high-temperature water near the inlet of the cooling water pipe 6 and even completely uncooled water upstream of the cooling water pipe 6 are introduced into the carbonator 3, resulting in poor quality carbonated water with a low carbon dioxide concentration. It had the disadvantage of being generated. One way to improve this drawback is to lengthen the cooling water pipe 6, but this method has the drawback of making the device very large.

On the other hand, the width of the upper and lower limit water levels of the water level control device 9 is narrowed to 1
If the amount of water introduced each time is reduced, only the cooled pressurized water in the cooling water pipe 6 will be introduced into the carbonator a, producing high-quality carbonated water, but the number of introductions will increase, and the water level control device 9 and electromagnetic Valve 7. Since the number of times the check valve 8 is activated is extremely large, there are disadvantages such as a decrease in reliability such as a decrease in service life.

Purpose of the Invention In view of the above drawbacks, the present invention aims to reduce the number of operations of a water level control device when introducing pressurized water into a carbonator, improve reliability, and to ensure that the water introduced into the carbonator is always sufficiently cooled water. The purpose is to make it possible to produce high-quality carbonated water by using only carbonated water.

Structure of the Invention In order to achieve the above object, the beverage supply device according to the present invention includes a flow regulator between the cooling water pipe and the carbonator,
The flow rate is adjusted so that the cooling water pipe outlet temperature is approximately equal to the carbonator internal temperature. With this configuration, the upper and lower limit water levels of the water level control device for introducing pressurized water into the carbonator are widened, and even if the amount of water introduced at a time is large, only sufficiently cooled water is always introduced into the carbonator, which improves the quality of carbonated water. This makes it possible to prevent a decrease in

Description of examples An embodiment of the present invention will be described below.

Note that the same components as those in the conventional example are given the same reference numerals and detailed explanation thereof will be omitted.

Reference numeral 10 denotes a flow rate regulator that adjusts the flow rate of pressurized water to the carbonator 3. 11 is a beverage supply valve, and 12 is an automatic regulator for guiding carbonated water to the supply valve 11 at a constant flow rate. 13 is a syrup tank pressurized with carbon dioxide gas passed through the gas pressure regulator 6; 14 is an automatic regulator for making the syrup t in the syrup tank 13 a constant flow rate and introducing it into the supply valve 11;

The relationship between the continuous water flow rate of the cooling water pipe 6 and the temperature is shown in FIG. The inlet water temperature of the cooling water pipe 6 is Ti, and the cooling water tank 2 temperature Tw
Flow rate G and cooling water pipe 6 outlet water temperature T.

The relationship is that as the flow rate G decreases, the outlet water temperature To approaches the cooling water tank 2 temperature Tw, and as the flow rate G increases, the inlet water temperature Ti K
It is asymptotic.

Therefore, if the flow rate of the cooling water pipe 6 is set below G, the difference between the outlet water temperature To and the cooling water tank 2 temperature Tw will be 0.5 dega or less, so by setting the flow rate regulator 10 to 01 or less, The pressurized water introduced into the carbonator 3 has been cooled to within 0.5 deg a of the cooling water tank 2 temperature, so the temperature is equivalent to the carbonated water temperature in the carbonator a. Therefore, it is pressurized with carbon dioxide gas and reaches the specified level in a short time. The quality of the carbonated water in the carbonator 3 never deteriorates due to reaching the carbon dioxide concentration.

In addition, the amount taken out from the supply valve 11 at one time, for example, the amount for one cup and the time taken out from the carbonator 3, and the amount of carbonated water and syrup taken out from the supply valve 11 in a predetermined amount as beverages, and the amount taken out for the next time. The relationship with the time required for one cycle until extraction is usually set as follows.

0 Amount of carbonated water taken out per time 150 mlO Time taken out per time of carbonated water 4 seconds 01 Cycle time Minimum 10 seconds Therefore, the unit time flow rate when taking out carbonated water is 2.26b, but the stop time is 6 Because there is a second, 0.9X 7m
The extraction flow rate is considerable.

On the other hand, the flow rate introduced into the carbonator 3 must be set higher than the above-mentioned take-out flow rate, so that even if the carbonated water is continuously taken out from the supply valve 11, the quality of the beverage will not deteriorate due to the decrease in the amount of carbonated water. The flow rate is adjusted by the flow rate regulator 10 so that the introduced flow rate is 1.2β/Wn.0 In the relationship between the length of the cooling water pipe 6, the outlet water temperature To, and the flow rate G, the flow rate at which the outlet water temperature To becomes equal to or lower than a predetermined temperature. G1
The relationship between L and the length L of the cooling water pipe 6 is as shown in Figure 3.
Since the flow rate introduced into the conventional carbonator 3 is approximately 1oR/-, in order to achieve the same outlet temperature of the cooling water pipe 6 as in the beverage dispensing device of the present invention, the length of the cooling water pipe 6 of the present invention must be approximately 8 times longer. Requires.

Therefore, the length of the cooling water pipe 6 can be set to an optimum length that satisfies the predetermined outlet temperature of the cooling water pipe 6 and provides a high-quality beverage even when the water is continuously taken out from the supply valve 11.

In addition, in the water level control device 9, even if pressurized water cooled at a speed of 1.2 fL/- is introduced into the residual carbonated water at the lower limit water level, the carbon dioxide in the carbonator 3 will be removed during the take-out cycle from the supply valve 11. The lower limit water level is set so that the carbon dioxide concentration of the entire water is equal to or higher than a predetermined value, and the width of the upper and lower limit water levels is set so that the number of operations of the solenoid valve 7, check valve 8, and water level control device 9 is equal to or less than the number of operations that can guarantee the lifespan. It is set to take .

With the above configuration, the upper and lower limit water levels of the water level control device 9 can be set widely, the number of operations can be reduced, and the service life can be guaranteed, and the outlet temperature of the cooling water pipe 6 is always cooled to the temperature inside the carbonator 3, resulting in good heating. Since the pressure valve is introduced into the carbonator 3, carbonated water can always be of good quality.

Effects of the Invention As is clear from the above explanation, the beverage supply device according to the present invention introduces pressurized water by a pump into a carbonator through a cooling water pipe in a cooling water tank, and between the cooling water pipe and the carbonator, the water temperature at the exit of the cooling water pipe is lower than that of the carbonator. Since it is equipped with a flow rate regulator that adjusts the flow rate of pressurized water to the same level as the internal temperature, the number of operations of solenoid valves, water level control devices, etc. is reduced, and the amount of water introduced at one time is always sufficient to ensure a long service life. Cooled pressurized water is introduced into the carbonator, which maintains the quality of the carbonated water at all times, making it possible to continuously dispense high-quality beverages. Furthermore, since the length of the cooling water pipe can be kept to the minimum necessary length, the size of the device can also be optimized.

[Brief explanation of drawings]

Fig. 1 is a piping diagram showing an embodiment of the present invention, Fig. 2 is a flow rate-outlet temperature characteristic diagram when the length of the cooling water pipe is constant, and Fig. 3 is a flow rate - length characteristic when the outlet temperature of the cooling water pipe is constant. FIG. 4 is a piping diagram of a conventional beverage dispensing device. 1...Pump, 2...Cooling water tank, 3.
...Carbonator, 6...Cooling water pipe, 1
o...Flow rate regulator. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3 Figure 6' (1/w-) - Yu. Figure 4

Claims (1)

[Claims] Pressurized water from the pump is passed through the cooling water pipe in the cooling water tank,
A flow regulator is provided between the outlet of the cooling water pipe and the inlet of the carbonator, and when the water is continuously passed through the cooling water pipe, the water temperature at the exit of the cooling water pipe becomes within the carbonator. A beverage supply device in which the flow rate of pressurized water flowing through the cooling water pipe is controlled by the flow rate regulator so that the flow rate is approximately equal to the temperature.