JPH0638262Y2 - Cooling water supply device for refrigerator - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a cooling water supply device for use in a water-cooled refrigerator, and more particularly to a cooling water supply device in which the cooling water can be used as miscellaneous water for toilets and the like. It is a thing.

<Prior Art> In a water-cooled refrigerator, the heat generated by the operation is removed by using cooling water, which is circulated in a cooling tower to be released into the atmosphere, or the cooling water after cooling the refrigerator. Is used as miscellaneous water, and the amount of water used is replenished from the outside to supply replenishment water having a low temperature, and the temperature difference is used for cooling.

FIG. 2 is a diagram showing the configuration of the latter method described above, in which 1 is a refrigerator, 2 is a cooling tower, and 3 is a cooling water pipe connecting the refrigerator 1 and the cooling tower 2 on the way. Is provided with a cooling water pump 4. A make-up water pipe 5 is connected to the cooling tower 2, and is automatically replenished when the cooling water is below a certain level. Reference numeral 6 denotes a miscellaneous water pipe branched from the cooling water pipe 3 from the cooling tower 2 and supplying cooling water as miscellaneous water to a toilet or the like.

In such a configuration, if miscellaneous water is used in the toilet 7 or the like, the water level in the cooling tower 2 drops below a predetermined level,
Water is newly supplied from the makeup water pipe 5. This make-up water is
Generally, it is lower than the temperature of the cooling water required for the refrigerator,
It can be used as cooling water for the refrigerator 1, and in this case, the cooling tower 2
The cooling water circulates through the cooling tower 2. On the other hand, when the use of miscellaneous water in the toilet decreases, the temperature of the cooling water is not replenished and the temperature of the cooling water rises due to the exhaust heat of the refrigerator 1. In this case, the cooling tower 2 is operated to cool the cooling water. To do.

<Problems to be solved by the invention> In the conventional device described above, although the effect of saving water is great, the corrosive water from the outside directly enters the cooling water pipe and the refrigerator, and therefore the chemical injection is performed. However, it is necessary to take measures against the concentration control or scale adhesion, which makes maintenance difficult and increases running costs.

The present invention has been made to solve such a problem, and an object of the present invention is to obtain a cooling water supply device for a refrigerator, which makes it possible to facilitate maintenance and reduce running costs while taking advantage of its advantages. To do.

<Means for Solving the Problems> In order to solve the problems described above, in the cooling water supply device for a refrigerator according to the present invention, the secondary cooling water pipe for circulating the cooling water in the refrigerator is a closed cycle system. A heat exchanger is installed on the way, and the heat exchanger can exchange heat with the primary cooling water supplied from the miscellaneous water tank to which the cooling water pipe from the cooling tower and the makeup water pipe are connected via the primary cooling water pipe. In addition, the primary cooling water pipe passing through the same heat exchanger is branched into a primary cooling water pipe for recirculating the primary cooling water to the cooling tower and a miscellaneous water pipe.

<Operation> Since the cooling water supply device of the refrigerator according to the present invention has the above-described structure, when the cooling water is used as the miscellaneous water, the water from the miscellaneous water tank flows into the heat exchanger to freeze the water. Heat is exchanged with the cooling water in the secondary cooling water pipe of the closed cycle system connected to the machine to cool it. At this time, when the water level in the miscellaneous water tank drops, water is replenished from the makeup water pipe.

On the other hand, when the miscellaneous water is not used, the primary cooling water exchanges heat with the secondary cooling water in the heat exchanger, and then circulates through the cooling tower, where it is cooled and then enters the miscellaneous water tank and the heat exchanger again. To cool the secondary cooling water.

In this way, since the secondary cooling water in the closed cycle system can be cooled, it is possible to prevent corrosive water from entering the refrigerator and the secondary cooling water pipe.

<Embodiment> An embodiment of the present invention will be described below with reference to FIG.

In the figure, 11 is a water-cooled refrigerator, 12 is a secondary cooling water pipe of a closed cycle for circulating cooling water in the refrigerator 11, and has a secondary cooling water pump 13. 14 is a cooling tower, 15 is a cooling tower
A miscellaneous water tank provided at a lower part of the cooling water tank 14, to which a cooling water pipe 16 and a makeup water pipe 17 from a cooling tower 14 are connected. 18 is a heat exchanger interposed in the middle of the secondary cooling water pipe 12, the primary cooling water pipe 15 from the miscellaneous water tank 15 is connected to the primary side of the heat exchanger 18, the primary cooling water and the secondary cooling water. The cooling water is configured to exchange heat. The primary cooling water pipe 19 from the heat exchanger 18 is branched into a primary cooling water pipe 20 for circulating the primary cooling water to the cooling tower 14 and a miscellaneous water pipe 21 for supplying the cooling water to the toilet 22 and the like.

23 is a primary cooling water pump provided in the primary cooling water pipe 19,
24 is a check valve provided in the bypass pipe bypassing the primary cooling water pump 23, 25 is an automatic valve provided in the bypass pipe of the secondary cooling water pipe 12 side bypassing the heat exchanger 18, 26 is a secondary When the temperature of the secondary cooling water in the cooling water pipe 12 is felt and the temperature of the secondary cooling water falls below a predetermined temperature, the automatic valve 25 is opened, and if the temperature of the secondary cooling water does not drop below the predetermined temperature, the primary cooling water The thermostat 27 operates the pump 23, and the thermostat 27 operates the cooling tower 14 and the primary cooling water pump 23 when the temperature of the cooling water in the miscellaneous water tank 15 exceeds a predetermined temperature.

In the above configuration, when there is miscellaneous water used in the toilet 22 etc., the miscellaneous water flows from the miscellaneous water tank 15 to the miscellaneous water pipe 21 via the primary cooling water pipe 19, the check valve 24, and the heat exchanger 18 to exchange heat. Bowl 18
The heat of the secondary cooling water is exchanged with the secondary cooling water pipe 12 to cool the secondary cooling water.

Here, when the amount of miscellaneous water used is small and the temperature of the secondary cooling water does not drop below a predetermined temperature, the thermo 26 senses this and operates the primary cooling water pump 23.

The water temperature of the miscellaneous water tank 15 is detected by the thermo 27, and the cooling tower 14 and the primary cooling water pump 23 are controlled so that the temperature does not exceed a predetermined temperature. Further, when the water level in the miscellaneous water tank 15 falls below a predetermined level, water is replenished from the makeup water pipe 17 so that the water level is maintained at a predetermined level or higher.

Further, when the temperature of the primary cooling water in the miscellaneous water tank 15 is low and the secondary cooling water is overcooled and falls below a predetermined temperature as in winter, the thermo 26 opens the automatic valve 25 and a part of the secondary cooling water. Is maintained at a predetermined temperature by flowing through the heat exchanger 18.

Furthermore, when the temperature of the secondary cooling water is too low and the temperature of the secondary cooling water is too low, the automatic valve 25 is opened to maintain the temperature of the secondary cooling water at a predetermined temperature as in the above case.

On the other hand, when the miscellaneous water is not used in the toilet 22 etc., the primary cooling water does not flow, the heat exchange in the heat exchanger 18 disappears, and the temperature of the secondary cooling water rises. Then, the primary cooling water pump 23 is operated to supply the cooling water in the miscellaneous water tank 15 to the heat exchanger 18. This primary cooling water is the heat exchanger.
After cooling the secondary cooling water at 18, circulates in the cooling tower 14 via the primary cooling water pipe 20, returns to the miscellaneous water tank 15 via the cooling water pipe 16, and when the water temperature in the miscellaneous water tank 15 rises to a predetermined temperature or higher. The cooling tower 14 is operated by the thermostat and the water temperature is maintained below a predetermined temperature.

By cooling the secondary cooling water in the secondary cooling water pipe configured in the closed cycle as described above to a predetermined temperature or less, it is not necessary to inject chemicals into the secondary cooling water and maintenance is facilitated, and the running cost is also reduced. The water saving effect can be obtained by reducing the water consumption and using the cooling water as miscellaneous water.

<Effects of the Invention> As described above, according to the cooling water supply device for a refrigerator of the present invention, since the secondary cooling water pipe can be a closed cycle, the corrosive cooling water is refrigerated. Also, it is possible to prevent the intrusion into the cooling water pipe. Therefore, it is not necessary to add a chemical, and the scale does not adhere, so that maintenance is facilitated and running cost can be reduced. Further, since the primary cooling water can be used as miscellaneous water, a water saving effect can be obtained.

[Brief description of drawings]

 FIG. 1 is a block diagram showing an embodiment of the present invention, and FIG. 2 is a block diagram of a conventional device. 11… Refrigerator, 12… Secondary cooling water pipe, 13… Secondary cooling water pump, 14… Cooling tower, 15… Miscellaneous water tank, 16… Cooling water pipe, 17… Makeup water pipe, 18… Heat exchanger, 19, 20 ... Primary cooling water piping, 21 ... Miscellaneous water piping, 22 ... Toilet, 23 ... Primary cooling water pump, 24 ... Check valve, 25 ... Automatic valve, 26, 27 ... Thermo.

Claims (1)

[Scope of utility model registration request] 1. A secondary cooling water pipe for circulating cooling water in a refrigerator constitutes a closed cycle system, and a heat exchanger is interposed in the middle of the system, and a cooling water pipe and a makeup water pipe from a cooling tower are provided in the heat exchanger. Is configured to be capable of exchanging heat with the primary cooling water supplied through the primary cooling water pipe from the miscellaneous water tank to which the primary cooling water pipe passing through the heat exchanger is recirculated to the cooling tower. A cooling water supply device for a refrigerator, characterized in that a primary cooling water pipe and a miscellaneous water pipe are branched.