JPH01131989A - 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 providing an agitator control means for intermittently driving an agitator. CONSTITUTION: Water near a cooler 16 is cooled by the cooler 16. Further, it is agitated by the agitator 13 and cooling is performed over the entire area of a water tank 17. Also, since the agitator 13 is intermittently driven by a timer means 23, inside the water tank 17, a temperature difference is generated at the upper and lower parts of the water tank 17 when the agitator 13 is stopped. Since an ice layer is generated on the surface of the cooler 16 at the time, the ice pieces are not generated inside the cooling coil 10. Also, since the entire area inside the water tank 17 is cooled at the time of the operation of the agitator 13 in intermittent drive, a beverage inside the cooling coil 10 reaches 0 deg.C which is the desired temperature in the early stage.

Description

[Detailed Description of the Invention] Industrial Field of Application The present invention is applicable to cup-type soft drink vending machines, cold water or
This invention relates to a water-cooled thermal storage beverage cooling device used in soft drink dispensers, etc.

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. A device is well known 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. be. 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 The 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. 6 is an installation layout diagram of the temperature sensing part of the thermostat used in FIG. 4. Further, FIG. 6 is an operation control circuit diagram, and FIG. 7 is a time chart of the progress of the cooling operation.

In FIG. 4, 1 is a drinking water source such as tap water.

Reference numeral 2 denotes a drinking water tank, and 3 a drink supply pipe arranged to draw out the drink from the tank 2 and supply drink to a cup 6 placed on the pend stage 4.

6 is a drinking water supply pump, 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. The drink cooling carp Jv10 is arranged in the water tank at a distance from the cooler 16.

Note that 14 is a compressor motor for the refrigerator 12, 15 is a drive motor for the agitator 13, and 18 is an ice bank formed on the circumferential surface of the cooler 16. Furthermore, as shown in FIG. 6, the water 11 in the water tank 17 is sufficiently separated from the cooler 16.
A heat sensitive part 20 of a thermostat is disposed inside. 1
Reference numeral 9 denotes an operation control motor for the compressor motor 14 described above. In addition, Fig. 6 shows the conventional basic operation control circuit, and 21 is the compressor motor 1.
This is a contact point of a thermostat for controlling compressor motor operation connected in series with 4, and its temperature sensing part 19 is placed apart from the cooler 16. Furthermore, 22 is an agitator
It is a contact point of the agitator-drive motor operation control unit connected in series with the drive motor 15, and its temperature sensing part 2o is installed in the water 11 in the water tank 17 at a sufficient distance from the cooler 16. .

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

Further, due to the operation of the compressor motor 14, a layer of ice formed around the cooler 16 grows and becomes an ice bank 18. When the ice bank 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 16 agitates the water 11 in the water tank 17 in order 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 installed in the water 11 in the water tank 17 is set to a positive temperature T2 close to the freezing point of the nearby water, e.g. When the temperature drops to 1.2°C, this temperature is sensed and the contact 22 opens to stop the agitator drive motor 15. In the process of cooling the water 11 in the cooling water tank 17, the water temperature near the cooler 1e is changed to B, The water temperature in the cooling device 10 is shown in A. When this water temperature drops to 12° C., the water 11 in the water tank 17 is not stirred and remains stationary, and the supercooling phenomenon is slightly limited to the area around the cooling device 16. This prevents the inside of the cooling coil 1o from becoming overcooled.In other words, the inside of the cooling coil 10 is overcooled and ice chips are generated inside the cooling coil 10, thereby preventing beverage jamming.

Problems to be Solved by the Invention However, in the above-described configuration, the thermocouple 20 for controlling the operation of the agitator drive motor in the water tank 17
This is the temperature sensed by the thermostat 2o. Water temperature is 0℃
In order to stop the agitator drive motor 16 when the temperature reaches 0°C, the time required to reach the desired water temperature of 0°C (12-11
) is very time consuming. In addition, the thermostat) 2
Due to variations in the temperature characteristics of the cooling coil L/10 and variations in the mounting position, variations occur in the time it takes for the water temperature in the cooling coil L/10 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 cooler inserted in the middle of the beverage supply pipeline. The cooling water tank has a coil disposed therein and is filled with water, an electric agitator that stirs the water in the cooling water tank, and an agitator control means that operates the agitator intermittently.

Effect of the present invention With the above configuration, the agitator drive motor is intermittently operated, so when the agitator is stopped, the ice layer is deposited on the cooling coil, and when the agitator is in operation, the entire area of the water tank is cooled. Since no ice chips are generated in the water tank, the water temperature in the water tank is quickly cooled, and the beverage in the cooling coil also quickly reaches the 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 is a beverage system diagram of a water-cooled thermal storage type cooling device in one 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 the circuit diagram, and FIG. 4 shows a timing chart of the temperature in the water tank, etc.

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.

23 is a timer which is an agitator Δ control means for intermittently operating the agitator drive motor 15. This agitator stirs the water 11 in the cooling water tank 17 to cool the entire area of the water tank 17.

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. The water is further agitated by an agitator 13 and cooled over the entire area of the water tank 17.

Since the agitator 13 is still intermittently operated by the timer means 23, a temperature difference will occur inside the water tank 17 between the top and bottom of the water tank 17 when the agitator 13 is stopped. At this time, since an ice layer is generated on the surface of the cooler 16, no ice chips are generated inside the cooling coil 10. Furthermore, during the intermittent operation, when the agitator 13 is in operation, the entire area within the water tank 17 is cooled, so that the beverage within the cooling coil 1o quickly reaches the desired temperature of 0°C.

As described above, the present invention provides a cooler that generates an ice layer on the surface;
A cooling water tank filled with water, which includes a beverage cooling coil inserted in the middle of a beverage supply pipeline, an electric agitator that stirs water in the cooling water tank, and an agitator that operates the agitator intermittently. By providing a control means, it is possible to generate a time to create a temperature difference between the top and bottom of the cooling water tank and a time to uniformly cool the tank, thereby cooling quickly without generating ice chips in the cooling coil. The beverage inside the coil can be cooled to a desired temperature o'b.

[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. 5 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, 1°...Cooling coil, 17...
Cooling water tank, 13...Agitator, 25...
・Bypass pipe. Name of agent: Patent attorney Toshio Nakao and 1 other person13
- The first ACITEG 16 - Cooler 17 - - 1-9 cooling (S Fig. 2 Fig. 3 Kanoseki Fig. 4 Fig. 5

Claims (1)

[Claims] A cooler that generates an ice layer on the surface, a cooling water tank filled with water and equipped with a beverage cooling coil inserted in the middle of a beverage supply pipe fin, and an electric type that stirs the water in the cooling water tank. A water-cooled thermal storage beverage cooling device comprising an agitator and an agitator control means for intermittently operating the agitator.