Water cooling device

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]

[0001] The present invention relates to a water cooling device that cools water, and more particularly to a water cooling device that can cool a large amount of water at once. [Background technology]

[0002] In general, concrete mixing water should be cooled as much as possible before mixing with cement in order to suppress the temperature rise during the chemical reaction when mixed with cement. In short, concrete expands and shrinks more as the temperature rises, making it more likely to crack. Therefore, if mixing water is cooled before mixing with cement, the initial temperature of the concrete can be reduced, and as a result, the maximum temperature that the concrete reaches due to heat generation can be kept low. This suppresses the amount of expansion and shrinkage of the concrete that accompanies the temperature rise, making it less likely to crack. Note that a large amount of concrete mixing water is required when constructing a concrete structure.

[0003] In addition, the pipe cooling method is used when constructing concrete structures. This method circulates water through multiple pipes installed at intervals inside the concrete structure to suppress heat generation from the concrete and thereby suppress cracks caused by temperature rise, and this method also requires a large amount of water. In addition, this pipe cooling method requires that a large amount of high-temperature water flowing out from each pipe be cooled and circulated in a short period of time.

[0004] Therefore, in the pipe cooling method and the like described above, a chiller is generally adopted as a device for cooling water (see Patent Document 1). The chiller includes a refrigerant circuit in which, for example, a compressor, a condenser, an expansion valve, and an evaporator are connected to each other. The compressor changes low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure compressed refrigerant gas so that it can be easily cooled and liquefied in the condenser. The condenser cools and condenses the compressed refrigerant gas generated by the compressor with air, changing it into a room-temperature, high-pressure liquid refrigerant. The expansion valve throttles and reduces the pressure of the room-temperature, high-pressure liquid refrigerant, changing it into a low-temperature, low-pressure liquid refrigerant so that it can be easily evaporated in the evaporator.

[0005] In the evaporator, the liquid refrigerant produced by the expansion valve absorbs heat from the high-temperature water stored around the evaporator and evaporates (the water cools), producing low-temperature, low-pressure refrigerant gas again.The high-temperature water flowing out of multiple pipes placed inside the concrete structure is stored around the evaporator of the chiller, cooled by the chiller, and then pressure-fed to the multiple pipes inside the concrete structure again. [Prior art documents] [Patent documents]

[0006] [Patent Document 1] JP 2017-150266 A Summary of the Invention [Problem to be solved by the invention]

[0007] As mentioned above, conventionally, the large amount of water used in concrete mixing and pipe cooling methods has been cooled by chillers, but chillers cannot cool large amounts of water at once, and there is a limit to their cooling performance (cooling efficiency). Moreover, even if chillers are procured by leasing, they are quite expensive, so there was a need to develop a technology that can cool large amounts of water at once at low cost.

[0008] The present invention has been made in consideration of the above problems, and has an object to provide a water cooling device capable of efficiently cooling a large amount of water at once. [Means for solving the problem]

[0009] As a means for solving the above problem, the invention relating to the water cooling device of claim 1 is as follows: A water cooling device for cooling concrete mixing water or water used in pipe cooling method, the water being cooled is provided on the other end of the inner wall of the device. A refrigerator equipped with a cooling device and having an internal space capable of maintaining an environment cooled by the cooling device; From one side wall part in the longitudinal direction Extends into the interior space and The above A pipe into which water to be cooled flows. The piping is arranged to travel back and forth multiple times along the longitudinal direction between a side wall portion at one longitudinal end of the cooling chamber and the cooling device, passing through a position close to the cooling device. It is characterized by the above. In the invention of claim 1, the relatively large cooled internal space in the refrigerator is used to cool the water to be cooled, making it possible to cool a large amount of water, for example, about 100 L / min, at once. Also, in the invention of claim 1, the refrigerator is significantly cheaper than the chillers that have been used up until now, and has great economic benefits. Furthermore, the water to be cooled in the piping travels back and forth multiple times along the longitudinal direction between the side wall portion at one longitudinal end and the cooling device within the cooling cabinet, passing through a position close to the cooling device, thereby improving cooling efficiency.

[0010] The invention according to claim 2 of the water cooling device is characterized in that in the invention of claim 1, the cooling chamber and the piping are unitized. In the invention of claim 2, the cooling chamber and the piping are unitized, which makes it easy to install, remove and move the cooling chamber and the piping on site.

[0011] The invention relating to claim 3 of the water cooling device is the invention of claim 1 or 2, characterized in that the temperature in the internal space can be set arbitrarily by the cooling device. In the invention of claim 3, the cooling temperature can be set based on the use of the water to be cooled, so that the temperature in the internal space can be set appropriately in accordance with the initial temperature of the water to be cooled (the temperature before cooling), thereby contributing to energy savings.

[0012] The invention related to claim 4 of the water cooling device is characterized in that in any one of claims 1 to 3, the cooling box is an existing reefer container used for transporting goods. In the invention of claim 4, the cooling warehouse is constructed from an existing reefer container, which is inexpensive and easy to procure, does not require initial investment for development, and is economically very advantageous. Moreover, the existing reefer container is easy to transport and can be quickly installed on site.

[0014] Claim 5 The invention relating to the water cooling device is as follows: 4 In any one of the inventions, the piping is provided in a plurality of systems. Claim 5 In the present invention, the amount of water to be cooled can be significantly increased, and the cooling efficiency can be improved. Effect of the Invention

[0015] The water cooling device of the present invention can cool large amounts of water at once more efficiently than conventional chillers, and as a result, it can be used to cool water used in pipe cooling methods and water mixed for concrete much more economically than conventional methods. [Brief description of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view of a water cooling device according to an embodiment of the present invention. [Diagram 2] FIG. 2 is a cross-sectional view of a water cooling device according to an embodiment of the present invention. [Diagram 3] FIG. 3 is a perspective view showing an embodiment of a water cooling device according to the present invention, which is provided with two piping systems. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0017] Hereinafter, an embodiment of the present invention will be described in detail with reference to Figs. As shown in Figures 1 and 2, a water cooling system 1 according to an embodiment of the present invention includes a reefer container 2 equipped with 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 extending into the internal space 6 of the reefer container 2 and into which water to be cooled flows. The reefer container 2 corresponds to a cooling storehouse. The reefer container 2 is an existing one, and is generally used to maintain the internal space 6 cooled at a constant temperature by the cooling device 8 and to transport items placed in the internal space 6, such as fresh food, chemicals, medical supplies, and the like.

[0018] As shown in Figs. 1 and 2, the reefer container 2 is configured in a rectangular parallelepiped shape having an internal space 6. The reefer container 2 is a 20-foot container or a 40-foot container. When a 20-foot container is used for the reefer container 2, for example, the internal space 6 has a longitudinal length of about 5.5 m, a width length of about 2.5 m, and a height of about 2.5 m, which is large enough for a person to stand in. Some existing reefer containers 2 have a double-door door at one end in the longitudinal direction. When the reefer container 2 is used as the water cooling device 1 according to the embodiment of the present invention, the door is removed and a one-end side wall portion 10, which is generally rectangular in front view and includes a heat insulating material, is newly installed to close the opening and to increase airtightness. The one-end side wall portion 10 is provided with a pair of through holes 11, 11 through which the piping 3 is inserted.

[0019] A cooling device 8 is attached to the inner wall surface at the other end in the longitudinal direction of the reefer container 2. This cooling device 8 makes it possible to arbitrarily set the temperature in the internal space 6, and to adjust and maintain the temperature in the internal space 6. Each wall portion that forms 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 a constant temperature in the internal space 6.

[0020] The reefer container 2 can generally adjust the temperature in the internal space 6 in the range of -20°C to +20°C by the cooling device 8, and some special containers can set the temperature in the internal space 6 down to -60°C (for refrigeration only). The piping 3 is through which the water to be cooled flows. A metal pipe or a resin pipe is adopted for the piping 3. That is, 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 adopted for the piping 3, or a resin pipe which is light weight and easy to handle and can be easily connected and disconnected may be adopted. The inner diameter of the piping 3 is appropriately determined in consideration of the amount of water to be cooled to be processed, etc.

[0021] As shown in Figs. 1 and 2, the piping 3 is inserted into the reefer container 2 through one of the through holes 11 provided in one end side wall portion 10. The piping 3 is arranged so as to bend and make a number of round trips along the longitudinal direction of the reefer container 2. In this embodiment, the piping 3 is arranged so as to make three round trips along the longitudinal direction of the reefer container 2. The piping 3 extends to the outside through the other through hole 11 in the one end side wall portion 10 of the reefer container 2. A gap between the outer peripheral surface of the piping 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 is filled with a sealing material or the like (not shown) that enhances airtightness.

[0022] The reefer container 2 (with the door removed and a side wall 10 newly installed at one end) and the piping 3 are unitized. In this embodiment, one system (one pipe) of the piping 3 is provided, but depending on the size of the internal space 6 of the reefer container 2 and the cooling performance of the cooling device 8, two or more systems (two pipes) of the piping 3 may be provided, and the number of systems is not limited. FIG. 3 shows an embodiment having two systems (two pipes) of the piping 3, for example. Water to be cooled flows in from the inlet of the piping 3 (see the arrows in FIGS. 1 and 2), and the water to be cooled travels back and forth multiple times along the longitudinal direction through the piping 3 in the internal space 6 of the reefer container 2, which is maintained at an appropriate temperature, for example, −20° C., to be cooled to an appropriate temperature, and then flows out from the outlet of the piping 3 to the outside (see the arrows in FIGS. 1 and 2). Specifically, when the water to be cooled flows through the piping 3 within the internal space 6 of the reefer container 2, which is maintained at, for example, -20°C, it is cooled to a temperature about 10 to 15°C lower than the initial temperature at the time of inflow, depending on the initial temperature when the water flows into the reefer container 2, and then flows out of the reefer container 2 to the outside.

[0023] The water to be cooled is stored at high temperature in, for example, a tank, and is flowed into the pipe 3 by a pressure pump (not shown) or the like. In the water cooling device 1 according to this embodiment, the water to be cooled can be cooled at about 100 L / min by utilizing the relatively large internal space 6 of the reefer container 2, although this depends on the inner diameter of the pipe 3 and the capacity of the pressure pump. The water to be cooled is mixing water for concrete, water used in a pipe cooling method, etc.

[0024] As described above, the water cooling system 1 according to the present embodiment includes the reefer container 2 equipped with the cooling device 8 and having the internal space 6 capable of maintaining an environment cooled by the cooling device 8, and the piping 3 extending into the internal space 6 of the reefer container 2 and into which the 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 utilizing the relatively large cooled internal space 6 in the reefer container 2. Thus, the water cooling system 1 according to the present embodiment is particularly effective when a large amount of water needs to be cooled in a short time, for example, when cooling a large amount of water used in a pipe cooling method or the like.

[0025] In addition, in the water cooling device 1 according to the present embodiment, an existing reefer container 2 is used as a freezer. For example, if the reefer container 2 is procured by leasing, it costs about 100,000 yen / month (about 1 million yen if purchased), but if a conventional chiller (three units are required for general construction) is procured by leasing, it costs about 300,000 yen x three units / month, which obviously reduces the necessary expenses. Moreover, since no initial investment is required for the development of the water cooling device 1, there is a great economic advantage compared to the conventional method. Moreover, by adopting an existing reefer container 2, it is easy to carry and can be quickly installed on site.

[0026] Furthermore, in the water cooling device 1 according to this embodiment, the reefer container 2 and the piping 3 are unitized, so that installation at the site, removal, and movement (carrying) thereof are easy. Moreover, in the water cooling device 1 according to this embodiment, the installation can be completed by simply connecting, for example, a pressure pipe for pressure-transporting water stored in a tank or the like to the piping 3 of this water cooling device 1, so that the time spent on installation and removal can be shortened, and the total construction cost can be reduced.

[0027] Furthermore, in the water cooling system 1 according to this embodiment, the temperature in the internal space 6 of the reefer container 2 can be set arbitrarily by the cooling device 8, and the cooling temperature can be set based on the application of the water to be cooled. This allows the temperature in the internal space 6 to be arbitrarily set in response to the initial temperature of the water to be cooled (temperature before cooling), which contributes to energy saving.

[0028] Furthermore, in the water cooling system 1 according to this embodiment, the piping 3 is arranged so as to make multiple round trips along the longitudinal direction in the internal space 6 of the reefer container 2, and by providing multiple systems of the piping 3, the cooling efficiency for cooling a large amount of water to an appropriate temperature can be further improved.

[0029] In this embodiment, an existing reefer container 2 is used as the cooling box, but instead of using an existing reefer container 2, a cooling box having a cylindrical or rectangular parallelepiped internal space 6 of a desired size and equipped with a cooling device 8 having a desired cooling performance may be newly manufactured, and the piping 3 extending into the internal space 6 may be newly manufactured as a unit. Furthermore, when a cooling box having a cylindrical internal space 6 is used, the piping 3 may be arranged in a spiral shape in the cylindrical internal space 6. In this embodiment, the piping 3 can be inserted from one axial end face of the cylindrical internal space 6 and extended from the other axial end face. [Explanation of symbols]

[0030] 1 water cooling system, 2 reefer container (cooling facility), 3 piping, 6 inner space, 8 cooling system

Claims

1. A water cooling device for cooling concrete mixing water or water used in a pipe cooling method, a cooling device provided on an inner wall surface at the other end in the longitudinal direction and having an internal space capable of maintaining an environment cooled by the cooling device; A pipe extending from one side wall portion in the longitudinal direction of the cooling box into an internal space, into which the water to be cooled flows, A water cooling device characterized in that the piping is arranged so as to make multiple round trips along the longitudinal direction between one longitudinal end side wall portion of the cooling chamber and the cooling device, passing through a position close to the cooling device.

2. 2. The water cooling device according to claim 1, wherein the cooling chamber and the piping are unitized.

3. 3. The water cooling device according to claim 1 or 2, characterized in that the temperature in the internal space can be set arbitrarily by the cooling device.

4. 4. The water cooling device according to claim 1, wherein the cooling container is an existing reefer container used for transporting goods.

5. 5. The water cooling device according to claim 1, further comprising a plurality of pipes.

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