JPH01131990A - Water cooling heat storage type beverage cooler - Google Patents

Abstract

PURPOSE: To perform cooling to a desired temperature in an early stage without generating ice pieces inside a cooling coil by circulating a beverage inside the cooling coil even when the inside of a cooling water tank is turned to an overcooled state. CONSTITUTION: Water near a cooler 16 is cooled by the cooler 16. Further, it is agitated by an agitator 13 and cooling is performed over the entire area of a water tank. The beverage inside the cooling coil 10 is circulated from the cooling coil 10 through a bypass valve 23 and a switching valve 24 to the cooling coil 10 again by a pump 6 as long as a sales command is not present and switched to the line of the switching valve 24, the cooling coil 10, the bypass valve 23 and a beverage supply valve 7 by the sales command. Even though the inside of the cooling water tank 17 is turned to the overcooled state at the time, the ice pieces are not generated inside the cooling coil 10 since the beverage is circulated and an ice layer is generated on the most cooled surface of the cooler 16. Then, since the agitator is driven at all times, the beverage inside the cooling coil is cooled at the desired temperature of 0 deg.C in the early stage.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water-cooled thermal storage beverage cooling device for use in cup-type soft drink vending machines, cold water or soft drink dispensers, and the like.

BACKGROUND OF THE INVENTION In recent years, beverage cooling systems have been developed, as described in Japanese Patent Publication No. 61-538, in which a cooler, which is an evaporator of a refrigerator, is inserted into a cooling water tank filled with water, and a beverage supply pipeline. BACKGROUND ART There is a well-known device in which a beverage cooling coil and an electric agitator for stirring water are arranged in an immersed manner, and the beverage in the beverage cooling coil is cooled by using water in a water tank as a heat transfer medium when a refrigerator is operated. In this case, in order to reduce the capacity of the refrigerator, ice is constantly made in a so-called ice bank around the cooler in the water tank, and even when the refrigerator is not operating, the amount of heat stored in the ice is used to Generally, a method is widely adopted in which the internal cooling water is maintained at a low temperature, thereby instantaneously increasing the beverage cooling capacity.

DESCRIPTION OF THE PREFERRED EMBODIMENTS A conventional water-cooled thermal storage type beverage cooling device as described above will be described below with reference to the drawings. FIG. 4 is a system diagram of the water-cooled thermal storage type beverage cooling device, and FIG. 5 is an installation layout diagram of the temperature sensing part of the thermostat used in FIG. 4. Moreover, FIG. 6 is an operation control # circuit diagram, and FIG. 7 is a time chart of the progress of cooling operation.

In FIG. 6, 1 is a drinking water source such as tap water. Reference numeral 2 denotes a drinking water tank, and 3 a drinking water supply pipe arranged so as to draw out the tank 2 and supply the drink to a cup 6 placed on the bending stage 4. 6 is a pump for supplying drinking water, and 7 is a drinking water supply valve disposed near the end of the pipeline 3.

8 is a beverage supply control circuit. On the other hand, the beverage cooling device 9 includes a cooling water tank 17 filled with water 11, a cooler 16 which is an evaporator of the cooler 12 which is placed immersed in the water in the water tank 17, and a cooler 16 which is inserted in the middle of the pipeline 3. Beverage cooling coil 10 placed in the water tank away from the cooler 16
It is made up of. In addition, 14 is a compressor motor of the refrigerator 12, 15 is a drive motor of the agitator 13, 1
8 shows an ice puncture generated on the circumferential surface of the cooler 16. Further, as shown in FIG. 5, the heat sensitive part 20 of the thermostat is disposed within the water 11 of the water tank 17, sufficiently separated from the cooler 16. 19 is the compressor motor 1 mentioned above.
4 operation control motor. However, Figure 6 shows the conventional basic operation control circuit, and 21 is a compressor.
This is a contact point of a thermostat for controlling compressor motor operation connected in series with -%-1-14, and its temperature sensing part 19 is placed apart from the cooler 16. Further, 22 is a contact point of a thermostat for controlling the operation of the agitator-drive motor connected in series with the agitator-drive motor 16, and its temperature-sensing part 20 is placed in the water 11 in the water tank 17 at a sufficient distance from the cooler 16. It is installed.

The operation of the water-cooled thermal storage type beverage cooling device configured as described above will be explained below.

Drinking water is always stored in the tank 2, and when a drink supply command signal is given, the supply valve 7 opens, and at the same time the pump 6 is operated to supply drinking water cooled by the cooling coil 10 to the cup 5. .

Furthermore, as the compressor motor 14 operates, a layer of ice formed around the cooler 16 grows, resulting in an ice puncture 18. When the ice puncture 18 reaches a predetermined thickness, the temperature sensitive part 19 of the compressor motor operation control thermostat is covered with the frozen layer and operates, opening the contact 21 and stopping the compressor motor 14. Further, when the ice melts and the temperature sensing portion 19 is exposed to the ice layer, the return operation is performed, the contact 21 is closed, and the refrigerator 12 is operated to resume operation. The agitator drive motor 15 agitates the water 11 in the water 417 to improve heat transfer characteristics. Further, as shown in the time chart shown in FIG. 7, the temperature sensing part 20 of the thermostat for controlling the operation of the agitator drive motor, which is attached to the water 11 in the water tank 17, is set to a positive temperature T2 near the freezing point of 0° C., for example, 1. When the temperature drops to .2°C, this temperature is sensed, the contact 22 opens, and the agitator drive motor 16 stops. In the process of cooling the water 11 in the cooling water tank 17, the water temperature near the cooler 16 is shown in B, and the water temperature in the cooling coil 1o is shown in A. When this water temperature drops to 12°C,
The water 11 in the water tank 17 is not stirred and kept in a stationary state, so that the supercooling phenomenon is slightly limited to the area around the cooler 16, thereby preventing the inside of the cooling coil 1o from becoming supercooled. The inside of the cooling coil 10 is supercooled and ice chips are generated inside the cooling coil 1o, thereby preventing the beverage from clogging.

Problems to be Solved by the Invention However, in the above configuration, the agitator drive motor operation control thermostat 2o in the water tank 17 causes the water temperature, which is the temperature sensed by the thermostat 2o, to be 0.
℃, the agitator and drive motor 16 are stopped, so as shown by the water temperature A in the cooling coil 10 shown in FIG.
-11) is very time consuming. Further, due to variations in the temperature characteristics of the thermostat 2° and variations in the mounting position, variations occur in the time it takes for the water temperature in the cooling coil v10 to reach a desired temperature.

In view of the above-mentioned problems, the present invention provides a water-cooled thermal storage type beverage cooling device that quickly cools the beverage to a desired temperature without generating ice chips in the cooling coil.

Means for Solving the Problems In order to solve the above problems, the water-cooled thermal storage type beverage cooling device of the present invention includes a cooler that generates an ice layer on the surface, and a beverage water supply inserted in the middle of the beverage supply pipeline. a cooling coil disposed downstream of the drinking water supply pump, a bypass valve disposed downstream of the cooling coil, a beverage bypass pipe, and the cooling coil and the bypass pipe disposed inside. , a cooling water tank filled with water, and an electric agitator for stirring the water in the cooling water tank.

According to the above-described structure, even if the water temperature in the cooling water tank is cooled by the cooler and reaches a supercooled state, the pump transfers the water from the cooling coil through the bypass valve to the switching valve and then to the cooling coil. Because the water is circulating, the beverage inside the cooling coil will not produce ice chips that would otherwise occur when the beverage is supercooled and stationary.

Furthermore, since the bypass pipe is also placed under water in the cooling water tank, the drinking water is always cooled.

Further, since the agitator drive motor is constantly operating and stirring the water in the cooling water tank, the water temperature in the water tank is quickly cooled, and the beverage in the cooling coil quickly reaches a desired temperature.

EXAMPLE Hereinafter, a water-cooled thermal storage type beverage cooling device according to an example of the present invention will be described with reference to the drawings.

FIG. 1 shows a beverage system diagram of a water-cooled thermal storage type cooling device according to an embodiment of the present invention. Further, FIG. 2 shows an embodiment of the installation of each operation control thermostat of the present invention, FIG. 3 shows an embodiment of a circuit diagram, and FIG. 4 shows a timing chart of the temperature in the water tank.

Components that are the same as those in the conventional example are given the same reference numerals, explanations are omitted, and only different components will be explained.

24 is a switching valve that operates in synchronization with the bypass valve 23. A bypass pipe 26 connects the bypass valve 23 and the switching valve 24, and is disposed in the water 11 of the cooling water tank 17 similarly to the cooling coil 1o. Reference numeral 26 denotes a temperature sensing part of a thermostat for controlling the valve switching of the bypass valve 23 and the switching valve 24, which is installed at a sufficient distance from the cooler 16, and 27 is a contact point thereof.

The operation of the water-cooled thermal storage type beverage cooling device configured as described above will be explained.

The water near the cooler 16 is cooled. Furthermore, since the water is stirred by the agitator 13, the entire area inside the water tank is cooled.

Unless there is a sales command, the beverage in the cooling coil 10 is circulated by the pump 6 from the cooling coil 10, through the bypass valve 23, through the switching valve 24, and back to the cooling coil 1°. Due to the sales directive, the switching valve 24° and the cooling coil 10.
Bypass valve 23. Switch to a line such as a beverage supply valve.

At this time, the inside of the cooling water tank 17 becomes supercooled, but since the beverage is circulating inside the cooling coil 10, ice chips are not generated, and a layer of ice is formed on the surface of the cooler 16, which is the coolest part. That will happen.

As described above, the present invention provides a cooler that generates an ice layer on the surface;
A beverage water supply pump inserted in the middle of a beverage supply pipeline, a cooling coil disposed downstream of the beverage water supply pump, and a bypass valve provided downstream of the cooling coil;
By providing a beverage bypass pipe, a cooling water tank filled with water in which the cooling coil and the bypass pipe are disposed, and an electric agitator that stirs the water in the cooling water tank, the inside of the cooling water tank can be improved. Even if the beverage reaches a supercooled state, by circulating the beverage in the cooling coil, not only will ice chips not be generated in the beverage coil, but the agitator is constantly running, so the desired beverage in the cooling coil can be quickly removed. It is possible to cool down to a temperature of 0''C.

[Brief explanation of the drawing]

Fig. 1 is a beverage system diagram of a water-cooled thermal storage type beverage chiller according to an embodiment of the present invention, Fig. 2 is a circuit diagram of this embodiment, Fig. 3 is a water temperature timing chart of this embodiment, and Fig. 4 is FIG. 6 is an installation diagram of each conventional control thermostat, FIG. 6 is a conventional circuit diagram, and FIG. 7 is a conventional water temperature timing chart. 16...Cooler, 6...Pump for drinking water supply, 10...Cooling coil, 23...
Bypass valve, 17... Cooling water tank, 13...
・・Agitator, 25・・mark・Bypass pipe. 6 - Water supply pump lρ-m - Cooling coil 13-m - Electric 7-theta l B - - - N 1Y left P' 17- Gu4'gu7 pa4f. /7 /,! ? /6 Figure 2 Figure 3 N ゝ

Claims (1)

[Claims] A cooler that generates an ice layer on the surface, a drinking water pump inserted in the middle of a drinking water supply pipeline, a cooling coil installed downstream of the drinking water pump, and a cooling coil installed downstream of the cooling coil. A bypass valve, a beverage bypass pipe, a cooling water tank filled with water in which the cooling coil and the bypass pipe are disposed, and an electric agitator that stirs the water in the cooling water tank. A water-cooled thermal storage beverage chiller.