JP2023008207A - water cooler - Google Patents

Abstract

To provide a water cooler which can efficiently cool a large amount of water at one time.SOLUTION: A water cooler 1 includes: a reefer container 2 including a cooling device 8 and having an internal space 6 capable of maintaining an environment cooled by the cooling device 8; and a pipe 3 which extends into the internal space 6 of the reefer container 2 and into which water to be cooled flows. Thus, a large amount of water can be efficiently cooled at one time by utilizing the relatively large cooled internal space 6 in the reefer container 2.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a water cooling device for cooling water, and more particularly to a water cooling device capable of cooling a large amount of water at once.

In general, the concrete mixing water should be cooled as much as possible before being mixed with cement in order to suppress temperature rise during chemical reaction when mixed with cement. In short, as the temperature rises, the amount of expansion and contraction of concrete increases, making cracks more likely to occur. Therefore, if the temperature of the mixing water is lowered and mixed with the cement, the initial temperature of the concrete can be lowered, and as a result, the maximum temperature reached by the heat generation of the concrete can be suppressed. As a result, the amount of expansion and contraction of concrete due to temperature rise can be suppressed, and cracks are less likely to occur. It should be noted that a large amount of water for mixing concrete is required when constructing a concrete structure.

In addition, when constructing a concrete structure, the pipe cooling method is adopted. The pipe cooling method is a method of suppressing cracks caused by temperature rise by circulating water through multiple pipes installed at intervals inside the concrete structure to suppress heat generation from the concrete. A large amount of water is required during construction. Moreover, in the pipe cooling method, it is necessary to cool and circulate a large amount of high-temperature water flowing out of each pipe in a short period of time.

Therefore, generally, a chiller is adopted as a device for cooling water in the above-described pipe cooling method and the like (see Patent Document 1). A chiller comprises, for example, a refrigerant circuit in which a compressor, a condenser, an expansion valve and an evaporator are interconnected. The compressor converts the low-temperature, low-pressure refrigerant gas into a high-temperature, high-pressure compressed refrigerant gas so that it can be easily cooled and liquefied by the condenser. In the condenser, the compressed refrigerant gas generated by the compressor is cooled and condensed with air to change into a normal temperature, high pressure liquid refrigerant. The expansion valve throttles and decompresses the room-temperature, high-pressure liquid refrigerant to change it into a low-temperature, low-pressure liquid refrigerant so that it can be easily evaporated in the evaporator.

In the evaporator, the liquid refrigerant generated by the expansion valve absorbs heat from the high-temperature water stored around the evaporator and evaporates (water cools), producing low-temperature, low-pressure refrigerant gas again. generated. By the chiller, the high-temperature water flowing out from the plurality of pipes arranged in the concrete structure is stored around the evaporator of the chiller, cooled, and pressure-fed to the plurality of pipes in the concrete structure again. .

JP 2017-150266 A

As described above, conventionally, a chiller cools a large amount of water used in the concrete mixing water and the pipe cooling method, but the chiller can cool a large amount of water at once. However, there is a limit in terms of cooling performance (cooling efficiency). Moreover, even if a chiller is procured by leasing, etc., it is quite expensive, and it was necessary to build a technology that could cool a large amount of water at once at a low cost.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a water cooling device capable of efficiently cooling a large amount of water at once.

As a means for solving the above problems, the invention according to the water cooling device of claim 1 is provided with a cooling device and a cooling chamber having an internal space that can maintain the environment cooled by the cooling device; and a pipe that extends into the internal space and into which water to be cooled flows.
In the invention of claim 1, since the water to be cooled is cooled by utilizing the cooled relatively large internal space in the cooler, it is possible to cool a large amount of water, for example, about 100 L / min of water at once. becomes possible. Moreover, in the invention of claim 1, the refrigerator is much cheaper than the conventionally used chiller, which is economically advantageous.

The water cooling device of claim 2 is characterized in that, in the invention of claim 1, the cooling chamber and the piping are unitized.
In the second aspect of the invention, the cooling chamber and the pipes are unitized, so installation, removal and movement to the site are facilitated.

The water cooling device according to claim 3 is characterized in that in the invention according to claim 1 or 2, the temperature in the internal space can be arbitrarily set by the cooling device.
In the third aspect of the invention, the cooling temperature can be set based on the use of the water to be cooled, so the temperature in the internal space can be adjusted according to the initial temperature (temperature before cooling) of the water to be cooled. An appropriate temperature may be set, which contributes to energy saving.

According to a fourth aspect of the present invention, there is provided a water cooling apparatus according to any one of the first to third aspects, wherein the cooling warehouse is an existing reefer container used for transporting goods.
According to the invention of claim 4, since the refrigerator is constructed by an existing reefer container, it is economically very advantageous because it can be easily procured at a low cost and does not require an initial investment for development. Moreover, existing reefer containers are easy to carry and can be quickly installed on site.

The water cooling device according to claim 5 is the water cooling device according to any one of claims 1 to 4, wherein the pipe is arranged to reciprocate a plurality of times in the internal space of the cooling chamber. is.
In the fifth aspect of the invention, the water in the pipe reciprocates in the cooling chamber a plurality of times, so the cooling efficiency can be improved.

According to a sixth aspect of the present invention, there is provided a water cooling device according to any one of the first to fifth aspects of the invention, wherein a plurality of systems of the pipes are provided.
In the sixth aspect of the invention, the amount of water to be cooled can be greatly increased, and the cooling efficiency can be improved.

The water cooling device according to the present invention can cool a large amount of water at a time more efficiently than the conventional chiller, and as a result, the water used in the pipe cooling construction method is much more economical than before. Also, it can be used for cooling the mixing water for concrete.

FIG. 1 is a perspective view of a water cooling device according to an embodiment of the invention. FIG. 2 is a cross-sectional view of a water cooling device according to an embodiment of the invention. FIG. 3 is a perspective view showing an embodiment having two lines of piping in the water cooling device according to the embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments for carrying out the present invention will be described in detail below with reference to FIGS. 1 to 3. FIG.
As shown in FIGS. 1 and 2, the water cooling system 1 according to the embodiment of the present invention includes a cooling device 8, and a reefer container 2 having an internal space 6 capable of maintaining an environment cooled by the cooling device 8. , and a pipe 3 extending into the interior space 6 of the reefer container 2 into which water to be cooled flows. The reefer container 2 corresponds to the cooler. The reefer container 2 is an existing one, and is generally arranged in the internal space 6 with the internal space 6 maintained at a constant temperature by a cooling device 8, For example, it is used to transport goods such as perishables, chemicals, and medical supplies.

As shown in FIGS. 1 and 2, the reefer container 2 has a rectangular parallelepiped shape with an internal space 6 . A 20-foot container or a 40-foot container is adopted as the size of the reefer container 2 . In the reefer container 2, for example, when a 20-foot container is adopted, the internal space 6 has a length of about 5.5 m in the longitudinal direction, a length of about 2.5 m in the width direction, and a height of about 2.5 m. It is about 2.5m in size and is large enough for a person to enter standing up. Some existing reefer containers 2 are provided with a double-opening door at one end in the longitudinal direction. 2, the open/close door is removed, and one end side wall portion 10 having a substantially rectangular shape when viewed from the front and including a heat insulating material is newly installed so as to close the opening thereof so as to improve airtightness. A pair of through holes 11 , 11 through which the pipe 3 is inserted is provided in the one end side wall portion 10 .

A cooling device 8 is provided on the inner wall surface of the other longitudinal end of the reefer container 2 . With this cooling device 8, the temperature in the internal space 6 can be arbitrarily set, and the temperature in the internal space 6 can be adjusted and maintained. Each wall forming the internal space 6 of the reefer container 2 is provided with a heat insulating material (not shown). This heat insulating material makes it difficult for cold air to escape from the internal space 6 to the outside, making it possible to maintain the internal space 6 at a constant temperature.

The reefer container 2 can generally adjust the temperature in the internal space 6 within a range of -20°C to +20°C by the cooling device 8. Some can set the temperature down to -60°C (only for freezing). The pipe 3 is for the water to be cooled to flow. A metal pipe or a resin pipe is adopted for the pipe 3 . That is, for the pipe 3, for example, an aluminum pipe made of a non-ferrous metal having high thermal conductivity, light weight, excellent corrosion resistance, and excellent workability may be used. A resin pipe having excellent properties may be used. The inner diameter of the pipe 3 is appropriately determined in consideration of the amount of water to be cooled, and the like.

As shown in FIGS. 1 and 2, the pipe 3 is inserted inside the reefer container 2 via one through-hole 11 provided in one end side wall portion 10 . The pipe 3 is bent so as to reciprocate a plurality of times along the longitudinal direction of the reefer container 2 . In this embodiment, the pipe 3 is arranged so as to reciprocate three times along the longitudinal direction of the reefer container 2 . The pipe 3 extends outside through the other through hole 11 of the one end side wall 10 of the reefer container 2 . Between the outer peripheral surface of the pipe 3 and the inner peripheral surface of the corresponding through-hole 11 provided in the one end side wall portion 10 of the reefer container 2, a sealing material or the like (not shown) that enhances airtightness is used to fill the gap. do.

The reefer container 2 (with the opening/closing door removed and a side wall portion 10 at one end newly installed) and the piping 3 are unitized. In the present embodiment, one pipe 3 is provided, but two pipes 3 may be provided depending on the size of the internal space 6 of the reefer container 2 and the cooling performance of the cooling device 8. ) or more, and the number of systems is not limited. In addition, FIG. 3 shows an embodiment in which, for example, two lines (two lines) of pipes 3 are provided. Then, the water to be cooled flows in from the inlet of the pipe 3 (see the arrows in FIGS. 1 and 2), and the water to be cooled is the internal space of the reefer container 2 maintained at an appropriate temperature, for example, -20 ° C. It is cooled to an appropriate temperature by reciprocating inside 6 along the longitudinal direction a plurality of times, and is discharged to the outside from the outlet of pipe 3 (see arrows in FIGS. 1 and 2). Specifically, when the water to be cooled flows through the pipe 3 in the internal space 6 of the reefer container 2 maintained at, for example, −20° C., the initial temperature when flowing into the reefer container 2 is also However, it is cooled to a temperature about 10 to 15° C. lower than the initial temperature at the time of inflow, and is discharged from the reefer container 2 to the outside.

The water to be cooled is stored at a high temperature in a tank or the like, and is flowed into the pipe 3 by a pump (not shown) or the like. In the water cooling device 1 according to the present embodiment, although depending on the inner diameter of the pipe 3 and the capacity of the pumping pump, the water to be cooled is 100 L by utilizing the relatively large internal space 6 of the reefer container 2. /min can be cooled. The water to be cooled is, for example, water for mixing concrete or water used in the pipe cooling method.

As described above, the water cooling device 1 according to the present embodiment includes the cooling device 8, the reefer container 2 having the internal space 6 capable of maintaining the environment cooled by the cooling device 8, and the reefer container 2. and a pipe 3 extending into an internal space 6 into which water to be cooled flows. As a result, a large amount of water, for example, a large amount of water of about 100 L/min can be cooled at once by using the relatively large cooled internal space 6 in the reefer container 2 . As a result, in the water cooling device 1 according to the present embodiment, when it is necessary to cool a large amount of water in a short time, for example, a large amount of water used for mixing concrete or a pipe cooling method can be cooled. This is particularly effective when

In addition, in the water cooling device 1 according to the present embodiment, the existing reefer container 2 is adopted as the freezer. Approximately 1 million yen is required), but if the conventionally adopted chiller (3 units are required for general construction) is procured by leasing, approximately 300,000 yen x 3 units/month are required. , which obviously reduces the costs involved. Moreover, since no initial investment is required for the development of the water cooling device 1, there is a great economic advantage over the conventional method. Moreover, by adopting the existing reefer container 2, it is easy to carry and can be quickly installed on site.

Furthermore, in the water cooling device 1 according to the present embodiment, the reefer container 2 and the piping 3 are unitized, so installation, removal, and movement (carrying) thereof to the site are facilitated. Moreover, in the water cooling device 1 according to the present embodiment, for example, the installation is completed only by connecting the pumping pipe for pumping water stored in a tank or the like to the pipe 3 of the water cooling device 1. Therefore, the time spent on installation and removal can be shortened, and the total construction cost can be reduced.

Furthermore, in the water cooling device 1 according to the present embodiment, the temperature in the internal space 6 of the reefer container 2 can be arbitrarily set by the cooling device 8, and the cooling temperature is set based on the application of the water to be cooled. can. As a result, the temperature in the internal space 6 can be arbitrarily set according to the initial temperature (temperature before cooling) of the water to be cooled, which contributes to energy saving.

Furthermore, in the water cooling device 1 according to the present embodiment, the pipes 3 are arranged to reciprocate a plurality of times along the longitudinal direction in the internal space 6 of the reefer container 2, and the pipes 3 are provided in a plurality of systems. Therefore, the cooling efficiency for cooling a large amount of water to an appropriate temperature can be further improved.

In this embodiment, the existing reefer container 2 is used as the cooling chamber. However, it is also possible to newly manufacture a refrigerator equipped with a cooling device 8 having a desired cooling performance, and to newly manufacture a unit in which the piping 3 extending in the internal space 6 is unitized. Furthermore, when adopting a refrigerator having a cylindrical internal space 6 , the piping 3 may be spirally arranged in the cylindrical internal space 6 . In this embodiment, the pipe 3 can be inserted from one axial end face of the cylindrical internal space 6 and extended from the other axial end face.

1 water cooling device, 2 reefer container (cooler), 3 piping, 6 internal space, 8 cooling device

Claims (6)

a refrigerator equipped with a cooling device and having an internal space capable of maintaining an environment cooled by the cooling device;
a pipe extending into the interior space of the cooling chamber into which water to be cooled flows;
Water cooling system with. 2. The water cooling device according to claim 1, wherein the cooling chamber and the piping are unitized. 3. The water cooling device according to 1 or 2, wherein the temperature in the internal space can be arbitrarily set by the cooling device. The water cooling apparatus according to any one of claims 1 to 3, wherein the cooling warehouse is an existing reefer container used for transporting goods. 5. The water cooling device according to any one of claims 1 to 4, wherein the piping is arranged so as to reciprocate a plurality of times in the internal space of the cooling chamber. The water cooling device according to any one of claims 1 to 5, wherein a plurality of systems of the piping are provided.

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