Refrigerant cooling device

Abstract

To provide a coolant cooling device with which, while suppressing an increase in an installation area, it is possible to appropriately cool a coolant in a heat exchanger.SOLUTION: The coolant cooling device comprises: three or more heat exchangers which are arranged so as to align in one row in the horizontal direction; upper water spay mats which are arranged on both sides of the row formed by the heat exchangers, respectively; lower water spray mats which are arranged below the heat exchangers and the upper water spray mats, respectively; a water supply unit for supplying water to the upper and lower water spray mats; and an air introduction unit for guiding an upper cooling air having been deprived of vaporization heat due to the evaporation of water from the upper water spray mats to the heat exchangers on the outside facing the upper water spray mats, respectively, on one hand, and guiding a lower cooling air having been derived of vaporization heat due to the evaporation of water from the lower water spray mats to the heat exchangers on the inside not facing the upper water spray mats on the other hand.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to refrigerant cooling devices. [Background technology]

[0002] Conventionally, a configuration is known in which water is dripped onto a water sprinkler mat installed in front of a heat exchanger of a refrigerator, and the condensation load is reduced by using the air that has lost the heat of vaporization as the water evaporates from the water sprinkler mat (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2004-3806 A Summary of the Invention [Problem to be solved by the invention]

[0004] When cooling multiple heat exchangers using the configuration described in Patent Document 1, it is possible to arrange the same number of heat exchangers and water sprinkling mats alternately in the horizontal direction. However, such a configuration may result in a large installation area for the device.

[0005] An object of the present disclosure is to provide a refrigerant cooling device that can appropriately cool a refrigerant in a heat exchanger while suppressing an increase in installation area. [Means for solving the problem]

[0006] The refrigerant cooling device of the present disclosure comprises three or more heat exchangers arranged in a horizontal row, an upper watering mat arranged on each end of the row formed by the heat exchangers, a lower watering mat arranged below the heat exchangers and the upper watering mat, a water supply unit that supplies water to the upper watering mat and the lower watering mat, and an air introduction unit configured to guide the upper cooling air from which heat of vaporization has been lost as water evaporates from the upper watering mat to the outer heat exchangers that face the upper watering mat, while guiding the lower cooling air from which heat of vaporization has been lost as water evaporates from the lower watering mat to the inner heat exchanger that does not face the upper watering mat. Effect of the Invention

[0007] According to the refrigerant cooling device of the present disclosure, it is possible to appropriately cool the refrigerant in the heat exchanger while preventing the installation area from becoming large. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a front view of a refrigerant cooling device according to a first embodiment; [Diagram 2] FIG. 2 is a plan view of a portion below a cooling unit in the refrigerant cooling device according to the first embodiment; [Diagram 3] FIG. 1 is a vertical cross-sectional view of a refrigerant cooling device according to a first embodiment; [Figure 4] 1 is a front view of a refrigerant cooling device according to a second embodiment; [Diagram 5] 11 is a plan view of a portion below a cooling unit in a refrigerant cooling device according to a second embodiment; [Figure 6] FIG. 13 is a vertical cross-sectional view of a refrigerant cooling device according to a second embodiment. [Figure 7] Front view of a refrigerant cooling device according to a third embodiment [Figure 8] 13 is a plan view of a portion below a cooling unit in a refrigerant cooling device according to a third embodiment; [Figure 9] FIG. 13 is a vertical cross-sectional view of a refrigerant cooling device according to a third embodiment. [Figure 10]Graph showing the relationship between the front wind speed of the lower water sprinkling mat and the saturation efficiency of the lower water sprinkling mat according to the third embodiment [Figure 11] Graph showing the relationship between the front wind speed of the lower water sprinkling mat according to the third embodiment and the pressure loss of air passing through the lower water sprinkling mat. [Figure 12] FIG. 1 is an explanatory diagram of a first height setting method for a support according to an embodiment; [Figure 13A] FIG. 11 is an explanatory diagram of a second height setting method for the support according to the embodiment; [Figure 13B] FIG. 11 is an explanatory diagram of a second height setting method for the support according to the embodiment; DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] [Embodiment] An embodiment of the present disclosure will be described.

[0010] First Embodiment First, a first embodiment of the present disclosure will be described.

[0011] (Configuration of refrigerant cooling device) First, the configuration of the refrigerant cooling device according to the first embodiment will be described. Fig. 1 is a front view of the refrigerant cooling device. Fig. 2 is a plan view of a portion of the refrigerant cooling device below a cooling unit. Fig. 3 is a vertical cross-sectional view of the refrigerant cooling device.

[0012] 1 and 2 cools a refrigerant compressed by a compressor of a refrigeration device (not shown). The refrigerant cooling device 1 includes three cooling units 2 and an auxiliary cooling device 3. The number of cooling units 2 constituting the refrigerant cooling device 1 may be two or more.

[0013] The cooling unit 2 includes a main body 21 and two heat exchangers 22. The main body 21 is formed in a rectangular box shape. The main body 21 houses the two heat exchangers 22 arranged side by side in the left-right direction (horizontal direction) in Figs. 1 and 2. A fan 23 is arranged on the upper wall of the main body 21. When the fan 23 is driven, air inside the main body 21 is exhausted upward.

[0014] The heat exchanger 22 is a so-called air-cooled type heat exchanger, which exchanges heat between the refrigerant compressed by the compressor and the air present around the heat exchanger 22, and sends the cooled refrigerant after the heat exchange to the evaporator via the expansion valve of the refrigeration device. The object to be cooled in the refrigeration device is cooled by the heat exchange between the refrigerant sent to the evaporator and the air present around the evaporator. The two heat exchangers 22 are fixed to a fixing plate 24. The front end of the fixing plate 24 is fixed to the front wall of the main body 21, and the rear end of the fixing plate 24 is fixed to the rear wall of the main body 21. This configuration prevents air below the fixing plate 24 from flowing between the two heat exchangers 22 fixed by the fixing plate 24. The two heat exchangers 22 are inclined so that the distance between their upper ends is longer than the distance between their lower ends when viewed from the front side of the main body 21 (the front side in FIG. 1). In addition, the two heat exchangers 22 may be arranged so that the distance between their upper ends is the same as the distance between their lower ends when viewed from the front side of the main body 21, or so that the distance between their upper ends is shorter than the distance between their lower ends.

[0015] The auxiliary cooling device 3 cools the heat exchanger 22. The auxiliary cooling device 3 includes a support 31, two upper water-spraying mats 32, three lower water-spraying mats 33, and a water supply unit .

[0016] The support 31 supports, from below, the three cooling units 2 arranged in a row in the left-right direction (horizontal direction). The support 31 includes a mounting portion 311 and legs 312. The mounting portion 311 is formed, for example, in the shape of a rectangular frame. The three cooling units 2 are mounted on the mounting portion 311. The legs 312 are provided so as to extend downward from the four corners of the mounting portion 311.

[0017] Of the four legs 312, a front adjustment plate 313 is disposed on the two legs 312 on the front side (lower side in FIG. 2) so as to close the space between the two legs 312. A rear adjustment plate 314 is disposed on the two legs 312 on the rear side (upper side in FIG. 2) so as to close the space between the two legs 312. Each adjustment plate 313, 314 is formed in a plate shape with a height approximately equal to the length of the leg 312. An inflow adjustment hole 313A is formed in the approximate center of the front adjustment plate 313. The front adjustment plate 313 adjusts the amount of air flowing from the front side of the support 31 to the lower side of the mounting part 311 to an amount corresponding to the size of the inflow adjustment hole 313A. On the other hand, the rear air inflow adjustment plate 313B does not have an inflow adjustment hole 313A formed therein. The rear adjustment plate 314 prevents air from flowing from the rear side of the support 31 to the lower side of the mounting part 311. It can also be said that the rear adjustment plate 314 adjusts the amount of air flowing from the rear side of the support 31 to below the mounting portion 311 .

[0018] The upper watering mat 32 and the lower watering mat 33 (hereinafter, sometimes referred to as "watering mats 32, 33") are formed in a plate shape from a material having air permeability. The watering mats 32, 33 may be made of a material that has little resistance when air passes through and can smoothly exchange heat with water. An example of the watering mats 32, 33 that are easy to pass air through is a nonwoven fabric-like fiber body. The watering mats 32, 33 may be made of a material that is absorbent and highly durable. The thickness of the watering mats 32, 33 is, for example, about several centimeters. From the viewpoint of effective use of resources, it is preferable to use the watering mats 32, 33 that are recycled from waste plastic and reprocessed into a fiber-like form. From the viewpoint of ease of installation of the watering mats 32, 33, it is preferable that the watering mats 32, 33 are made of an expandable material. The watering mats 32, 33 may be made of one mat, or may be made of multiple mats arranged in at least one of the up-down direction and the front-back direction.

[0019] An upper water-spraying mat 32 is disposed on each of both ends of a row formed by three cooling units 2. From another perspective, an upper water-spraying mat 32 is disposed on each of both ends of a row formed by six heat exchangers 22.

[0020] The lower water sprinkling mat 33 is disposed at a position facing the side of the support 31. Specifically, one lower water sprinkling mat 33 is disposed below each upper water sprinkling mat 32. Hereinafter, the lower water sprinkling mat 33 disposed below the upper water sprinkling mat 32 may be referred to as the first lower water sprinkling mat 33A. Each first lower water sprinkling mat 33A is disposed so as to close the space between the two legs 312 on the left side or the space between the two legs 312 on the right side as viewed from the front side of the main body 21. The upper end of the first lower water sprinkling mat 33A may or may not contact the lower end of the upper water sprinkling mat 32. In addition, the upper water sprinkling mat 32 and the first lower water sprinkling mat 33A may be composed of one water sprinkling mat. The remaining one lower water sprinkling mat 33 is disposed on the front adjustment plate 313 so as to close the inflow adjustment hole 313A. The lower water-sprinkling mat 33 that blocks the inflow adjustment hole 313A may be referred to as a second lower water-sprinkling mat 33B.

[0021] The support body 31 has a communication part 315 formed therein, which communicates between a portion of the side of the support body 31 facing the lower watering mat 33 and the upper surface of the support body 31. The communication part 315 is composed of a space between the two left leg parts 312, a space between the two right leg parts 312, the inflow adjustment hole 313A, a space below the mounting part 311, and an opening of the mounting part 311.

[0022] The water supply unit 34 supplies water to the upper watering mat 32 and the lower watering mat 33. The water supply unit 34 includes an upper water supply unit 341 that supplies water to each upper watering mat 32 from above, and a lower water supply unit 342 that supplies water to the second lower watering mat 33B from above. Water supplied from the upper water supply unit 341 is supplied to the first lower watering mat 33A via the upper watering mat 32. The amount of water supplied from the upper water supply unit 341 and the lower water supply unit 342 may be individually adjustable. The water supply unit 34 may further include a configuration that supplies water only to the first lower watering mat 33A.

[0023] Next, a more detailed configuration of the refrigerant cooling device 1 will be described with reference to Fig. 3. As shown in Fig. 3, the main body 21 of the cooling unit 2 has side openings 211 formed in the right side wall (right side wall) and the left side wall (left side wall), respectively, and a lower opening 212 formed in the bottom surface. Air outside the main body 21 is introduced into the inside of the main body 21 through the side openings 211 or the lower opening 212.

[0024] The heat exchangers 22 are disposed at positions facing each side opening 211. The upper watering mats 32 are disposed at positions facing the side opening 211 on the left side wall of the cooling unit 2 located at the left end and at positions facing the side opening 211 on the right side wall of the cooling unit 2 located at the right end. Hereinafter, the side opening 211 facing the upper watering mat 32 may be referred to as the outer side opening 211A. In addition, the side opening 211 that does not face the upper watering mat 32, that is, the side opening 211 other than the outer side opening 211A, may be referred to as the inner side opening 211B. In addition, the heat exchanger 22 facing the upper watering mat 32 via the outer side opening 211A may be referred to as the outer heat exchanger 22A. In addition, the heat exchanger 22 that does not face the upper water-spraying mat 32, that is, the heat exchanger 22 that faces the inner side opening 211B, may be referred to as the inner heat exchanger 22B. Each upper water-spraying mat 32 is disposed so as to block the outer side opening 211A.

[0025] The refrigerant cooling device 1 further includes an air introduction section 4, an air introduction blocking section 5, and a control section (not shown).

[0026] The air introduction section 4 is configured to guide the air from which heat of vaporization has been removed as water evaporates from the upper water-spraying mat 32 (hereinafter, sometimes referred to as "upper cooling air") to the outer heat exchanger 22A, while guiding the air from which heat of vaporization has been removed as water evaporates from the lower water-spraying mat 33 (hereinafter, sometimes referred to as "lower cooling air") to the inner heat exchanger 22B. The air introduction section 4 includes an upper introduction section 41 and a lower introduction section .

[0027] The upper inlet section 41 is configured by an outer side opening 211A of the cooling unit 2. As shown by an arrow A1 in FIG. 3, the upper inlet section 41 guides the upper cooling air to the outer heat exchanger 22A through the outer side opening 211A.

[0028] The lower introduction part 42 is composed of the communication part 315 and the lower opening 212 of the cooling unit 2. As shown by arrow A2 in Figures 2 and 3, the lower introduction part 42 guides the lower cooling air to the inner heat exchanger 22B through the communication part 315 and the lower opening 212.

[0029] The air introduction blocking portion 5 is configured not to guide the lower cooling air to the outer heat exchanger 22A. The air introduction blocking portion 5 is configured by partition plates 51 arranged in the cooling units 2 located at both ends of the row of cooling units 2 arranged in a row, and the fixed plate 24 of the cooling unit 2 in which the partition plates 51 are arranged. The partition plate 51 arranged in the leftmost cooling unit 2 is arranged so as to close the space surrounded by the left side wall, front wall, and rear wall of the main body 21 and the left side edge of the fixed plate 24. The partition plate 51 arranged in the rightmost cooling unit 2 is arranged so as to close the space surrounded by the right side wall, front wall, and rear wall of the main body 21 and the right side edge of the fixed plate 24. Note that, for example, a configuration corresponding to the partition plate 51 that closes the space surrounded by the left side wall, front wall, and rear wall of the main body 21 and the left side edge of the fixed plate 24 does not have to be formed in a plate shape, and may be arranged on the support body 31, as long as it has the function of closing the space.

[0030] The control unit controls the operation of the refrigerant cooling device 1 as a whole.

[0031] (Operation of refrigerant cooling device) Next, the operation of the refrigerant cooling device 1 will be described.

[0032] When cooling the heat exchanger 22, the control unit controls the water supply unit 34 to start supplying water to the water sprinkling mats 32 and 33. When the water supply starts, the upper water sprinkling mat 32, the first lower water sprinkling mat 33A, and the second lower water sprinkling mat 33B are wet with water. In addition, the control unit drives the fans 23 of the three cooling units 2.

[0033] When the fans 23 of the cooling units 2 at both ends of the three cooling units 2 are driven, an airflow is formed from the outside of the main body 21, passing through the upper watering mat 32, the upper inlet 41 (the outer side opening 211A), and the outer heat exchanger 22A toward the upper part of the main body 21, as shown by the arrow A1 in FIG. 3. This airflow generates upper cooling air from which heat of vaporization has been removed as water evaporates from the upper watering mat 32. The outer heat exchanger 22A is cooled by heat exchange with the upper cooling air. The upper cooling air that has exchanged heat with the outer heat exchanger 22A is exhausted from above the main body 21.

[0034] In addition, when the fans 23 of the cooling units 2 at both ends and the fans 23 of the cooling units 2 sandwiched between the cooling units 2 at both ends are driven, as shown by the arrow A2 in Figs. 2 and 3, an airflow is formed from the outside of the support 31 through the first and second lower watering mats 33A and 33B, the lower introduction part 42 (the communication part 315 and the lower opening 212), and the inner heat exchanger 22B toward the upper part of the main body 21. This airflow generates lower cooling air from which the heat of vaporization has been taken away as water evaporates from the first and second lower watering mats 33A and 33B. The lower cooling air is prevented from flowing toward the outer heat exchanger 22A by the air introduction prevention part 5, so it flows toward the inner heat exchanger 22B. The inner heat exchanger 22B is cooled by heat exchange with the lower cooling air. The lower cooling air that has exchanged heat with the inner heat exchanger 22B is exhausted from above the main body 21.

[0035] According to the first embodiment, the lower watering mat 33 that generates the lower cooling air for cooling the inner heat exchanger 22B is disposed below the upper watering mat 32 that generates the upper cooling air for cooling the outer heat exchanger 22A, and the heat exchanger 22. Therefore, compared to a case where the watering mat that generates the cooling air for cooling the inner heat exchanger 22B is disposed at the same height position as the inner heat exchanger 22B, it is possible to suppress an increase in the installation area of ​​the refrigerant cooling device 1. In addition, since the refrigerant in the inner heat exchanger 22B is cooled by the lower cooling air, while the refrigerant in the outer heat exchanger 22A is cooled by the upper cooling air, the refrigerant in all the heat exchangers 22 that constitute the refrigerant cooling device 1 can be appropriately cooled.

[0036] The refrigerant cooling device 1 includes an air introduction blocking portion 5 that prevents the lower cooling air from being introduced to the outer heat exchanger 22A. Therefore, the lower cooling air can be used only for cooling the inner heat exchanger 22B, and the cooling efficiency of the inner heat exchanger 22B can be improved.

[0037] <Second embodiment> Next, a second embodiment of the present disclosure will be described.

[0038] (Configuration of refrigerant cooling device) First, the configuration of the refrigerant cooling device according to the second embodiment will be described. Fig. 4 is a front view of the refrigerant cooling device. Fig. 5 is a plan view of a portion of the refrigerant cooling device below the cooling unit. Fig. 6 is a vertical cross-sectional view of the refrigerant cooling device. Note that the same names and symbols are used for the same configurations as those of the refrigerant cooling device 1 of the first embodiment, and descriptions thereof will be simplified or omitted.

[0039] The refrigerant cooling device 1A shown in Figures 4, 5 and 6 comprises two cooling units 2, an auxiliary cooling device 3A, an air introduction section 4A, an air introduction blocking section 5, a cover section 6A, and a control section (not shown). The number of cooling units 2 constituting the refrigerant cooling device 1A may be two or more.

[0040] The auxiliary cooling device 3A includes a support body 31, two upper water-spraying mats 32, two first lower water-spraying mats 33A, and a water supply unit 34A.

[0041] The support 31 supports, from below, two cooling units 2 arranged in a row in the left-right direction (horizontal direction) and a cover portion 6A arranged between the two cooling units 2. The interval W between adjacent cooling units 2 is unit (Width of the covering portion 6A (length in the direction in which the cooling units 2 are arranged)) (hereinafter, "unit interval W unit It is preferable that the unit interval W is set to satisfy the following formulas (1) and (2). unit It is more preferable that the unit interval W is 500 mm or less. unit The reason why it is preferable that satisfies the following formulas (1) and (2) will be described later. When the refrigerant cooling device 1A includes three or more cooling units 2, the support body 31 may support, from below, the three or more cooling units 2 arranged in a row in the left-right direction and the cover portion 6A arranged between adjacent cooling units 2. 0 <W unit … (1) W unit ≦H hex / twenty two) H hex : Height of main body 21

[0042] No inflow adjustment holes are formed in the front adjustment plate 313 and the rear adjustment plate 314. Each adjustment plate 313, 314 prevents air from flowing from the front side or the rear side of the support body 31 to below the mounting portion 311. It can also be said that each adjustment plate 313, 314 adjusts the amount of air flowing from the front side or the rear side of the support body 31 to below the mounting portion 311.

[0043] An upper water-spraying mat 32 is disposed on each end of the row formed by two cooling units 2. From another perspective, an upper water-spraying mat 32 is disposed on each end of the row formed by four heat exchangers 22. Below each upper water-spraying mat 32, a first lower water-spraying mat 33A is disposed.

[0044] In the support 31, a communication part 315A is formed which communicates between a part of the side of the support 31 facing the lower watering mat 33 and the upper surface of the support 31. The communication part 315A is composed of a space between the two left leg parts 312, a space between the two right leg parts 312, a space below the mounting part 311, and an opening of the mounting part 311.

[0045] The water supply unit 34A includes an upper water supply unit 341. The water supply unit 34A may further include a configuration for supplying water only to the first lower water-sprinkling mat 33A.

[0046] The cover portion 6A covers the area between adjacent cooling units 2 (hereinafter, sometimes referred to as the "inter-unit area"). The cover portion 6A prevents air guided to the inter-unit area through the communication portion 315A from leaking to the outside of the cooling unit 2. The cover portion 6A includes a front wall portion 61A, an upper wall portion 62A, and a rear wall portion 63A each formed in a plate shape. The front wall portion 61A is configured so that its main surface is parallel to the vertical direction and so as to close the front side of the inter-unit area. The upper wall portion 62A is configured so as to extend rearward from the upper end of the front wall portion 61A and so as to close the upper side of the inter-unit area. The rear wall portion 63A is configured so as to extend downward from the rear end of the upper wall portion 62A and so as to close the rear side of the inter-unit area.

[0047] The air introduction section 4A includes an upper introduction section 41 and a lower introduction section 42A. The lower introduction section 42A is configured with a communication section 315A, the lower opening 212 and the inner side opening 211B of the cooling unit 2, and a cover section 6A. As shown by an arrow A2 in Figs. 2 and 3, the lower introduction section 42A guides the lower cooling air to the inner heat exchanger 22B through the communication section 315A and the lower opening 212. The lower introduction section 42A guides the lower cooling air to the inner heat exchanger 22B through the communication section 315A, the inter-unit region, and the inner side opening 211B.

[0048] (Operation of refrigerant cooling device) Next, the operation of the refrigerant cooling device 1A will be described. Descriptions of the same operations as those of the refrigerant cooling device 1 of the first embodiment will be simplified or omitted.

[0049] When cooling the heat exchanger 22, the control unit controls the water supply unit 34A to start supplying water to the water sprinkling mats 32, 33. The control unit also drives the fans 23 of the two cooling units 2.

[0050] When the fans 23 of the two cooling units 2 are driven, the outer heat exchanger 22A is cooled by the upper cooling air as described in the first embodiment. The upper cooling air that has exchanged heat with the outer heat exchanger 22A is exhausted from above the main body 21.

[0051] In addition, when the fan 23 is driven, as shown by the arrow A2 in Figs. 5 and 6, an airflow is formed from the outside of the support 31A through the first lower watering mat 33A, the lower introduction part 42A (the communication part 315A and the lower opening 212 or the inner side opening 211B), the inter-unit area, and the inner heat exchanger 22B toward the upper part of the main body 21. The lower cooling air generated by this airflow does not flow toward the outer heat exchanger 22A because of the presence of the air introduction blocking part 5, but flows toward the inner heat exchanger 22B. The inner heat exchanger 22B is cooled by heat exchange with the lower cooling air. The lower cooling air that has exchanged heat with the inner heat exchanger 22B is exhausted from above the main body 21.

[0052] Here, when the cooling units 2 are not spaced apart, the interval between the inner heat exchangers 22B of the adjacent cooling units 2 becomes smaller than when the cooling units 2 are spaced apart, and therefore the wind speed of the lower cooling air at the lower end position of the region between the inner heat exchangers 22B (hereinafter, sometimes referred to as the "inter-heat exchanger region") becomes faster. On the other hand, the wind speed of the lower cooling air at the position facing the inner heat exchanger 22B in the adjacent cooling units 2 (hereinafter, sometimes referred to as the "opposing heat exchanger position") is almost the same regardless of whether the cooling units 2 are spaced apart. Therefore, when the cooling units 2 are not spaced apart, the difference (hereinafter, sometimes referred to as the "wind speed difference") between the wind speed of the lower cooling air at the lower end position of the inter-heat exchanger region and the wind speed of the lower cooling air at the opposing heat exchanger position becomes larger than when the cooling units 2 are spaced apart. If the wind speed difference exceeds 10 m / sec, turbulence may occur in the inter-heat exchanger region. When such turbulence occurs, the amount of air passing through the inner heat exchanger 22B decreases, and there is a risk that the inner heat exchanger 22B cannot be sufficiently cooled.

[0053] In the second embodiment, adjacent cooling units 2 are arranged at a distance from each other, and a cover portion 6A is arranged to cover the inter-unit region, so that the difference in wind speed between the wind speed of the lower cooling air at the lower end position P1 of the inter-heat exchanger region shown in FIG. 6 and the wind speed of the lower cooling air at the heat exchanger facing position P2 can be made smaller than when adjacent cooling units 2 are not spaced apart. Therefore, with the configuration of the second embodiment, the generation of turbulence in the inter-heat exchanger region can be suppressed compared to when adjacent cooling units 2 are not spaced apart, and the cooling efficiency of the inner heat exchanger 22B can be increased. In particular, in the second embodiment, the unit interval W unit is set to satisfy the above formula (1). Therefore, in the configuration of the second embodiment, the wind speed difference can be made 10 m / sec or less, and the generation of turbulence in the region between the heat exchangers can be prevented. As a result, the inner heat exchanger 22B can be sufficiently cooled. In addition, the unit interval W unit is set to satisfy the above formula (2), it is possible to prevent the refrigerant cooling device 1A from becoming large, and it is also possible to prevent an increase in cost due to an increase in size of the support body 31.

[0054] <Third embodiment> Next, a third embodiment of the present disclosure will be described. Fig. 7 is a front view of the refrigerant cooling device. Fig. 8 is a plan view of a portion of the refrigerant cooling device below the cooling unit. Fig. 9 is a vertical cross-sectional view of the refrigerant cooling device. Note that the same configurations as those of the refrigerant cooling device 1 of the first embodiment are given the same names and symbols, and descriptions thereof will be simplified or omitted.

[0055] A refrigerant cooling device 1B shown in Figures 7, 8 and 9 differs from the refrigerant cooling device 1 of the first embodiment in the configuration of an auxiliary cooling device 3B.

[0056] The auxiliary cooling device 3B is arranged at a height H of the support 31B. mount The configuration is the same as that of the auxiliary cooling device 3 of the first embodiment, except that the height H of the support 31B is 300 mm or more and 1500 mm or less, and the placement portion 311B supports two cooling units 2.mount If the height H of the support 31B exceeds 1500 mm, the distance between the ceiling of the facility in which the refrigerant cooling device 1B is installed and the fan 23 becomes short, and the exhaust efficiency of the fan 23 may decrease. mount If the height H of the support 31B is less than 300 mm, the wind speed of the air flowing into the lower water-spraying mat 33 may exceed 3 m / sec. mount is set to 300 mm or more and 1500 mm or less, it is possible to suppress a decrease in the exhaust efficiency of the fan 23, and to make the wind speed of the air flowing into the lower watering mat 33 (hereinafter sometimes referred to as the "front wind speed") 3 m / sec or less. The reason for setting the front wind speed to 3 m / sec or less will be described later.

[0057] The communication section 315B is composed of the space between the two left leg sections 312B, the space between the two right leg sections 312B, the inflow adjustment hole 313A, the space below the mounting section 311B, and the opening of the mounting section 311B. The communication section 315B is configured such that the size of the space between the two left leg sections 312B, the space between the two right leg sections 312B, and the inflow adjustment hole 313A is set so that the front wind speed of each of the first lower watering mat 33A and the second lower watering mat 33B is 3 m / sec or less.

[0058] The air introduction section 4B includes an upper introduction section 41 and a lower introduction section 42B. The lower introduction section 42B is configured by a communication section 315B and the lower opening 212 of the cooling unit 2.

[0059] Here, the reason for setting the wind speed at the front of the lower watering mat 33 to 3 m / sec or less will be explained. Fig. 10 is a graph showing the relationship between the wind speed at the front of the lower watering mat and the saturation efficiency of the lower watering mat. Fig. 11 is a graph showing the relationship between the wind speed at the front of the lower watering mat and the pressure loss of air passing through the lower watering mat. The saturation efficiency is a value obtained by the following formula (3). A higher saturation efficiency indicates that the air outlet side of the lower watering mat 33 is humidified to a state closer to saturation. Saturation efficiency (%) = (T1-T2) / (T1-T3) × 100 … (3) T1: Dry-bulb temperature of the air on the air inlet side of the lower watering mat 33 wetted with water T2: Dry-bulb temperature of the air at the air outlet side of the lower watering mat 33 wetted with water T3: Wet bulb temperature at the same enthalpy as the air on the air inlet side of the lower watering mat 33 wetted with water

[0060] Consider the relationship between the front wind speed and saturation efficiency of the wet lower watering mat 33, as shown in Fig. 10. When the saturation efficiency when the front wind speed is 1 m / sec is used as the standard, the rate of decrease in saturation efficiency when the front wind speed is 3 m / sec (hereinafter sometimes referred to as the "performance decrease rate") is approximately 10% when the thicknesses of the lower watering mat 33 are 300 mm, 200 mm, and 150 mm, and approximately 15% when the thicknesses are 100 mm and 75 mm.

[0061] 11, consider the relationship between the wind speed at the front of the wet lower water-spraying mat 33 and the pressure loss of the air passing through the lower water-spraying mat 33. If the maximum allowable value for pressure loss is set to 100 Pa, the pressure loss in lower water-spraying mats 33 with thicknesses of 300 mm, 200 mm, and 150 mm will exceed the maximum allowable value when the wind speed at the front exceeds 3 m / sec.

[0062] Furthermore, when the front wind speed exceeds 3 m / sec, the water contained in the lower water-spraying mat 33 is scattered by the air flow regardless of the thickness of the lower water-spraying mat 33 (water splashing occurs).

[0063] In the third embodiment, the communication part 315B is configured so that the front wind speed of the lower watering mat 33 is 3 m / sec or less. Therefore, it is possible to suppress the performance degradation rate of the lower watering mat 33 from exceeding 15%, that is, it is possible to maintain a high saturation efficiency, and the humidity on the air outlet side (below the placement part 311) of the lower watering mat 33 approaches the wet-bulb temperature on an isoenthalpy basis. Therefore, it is possible to create a state in which the temperature on the air outlet side is low, and it is possible to appropriately cool the inner heat exchanger 22B. In addition, it is possible to reduce the pressure loss in the lower watering mat 33 to 100 Pa or less, and it is possible to suppress a decrease in the amount of lower cooling air led to the inner heat exchanger 22B. Therefore, it is possible to appropriately cool the inner heat exchanger 22B. Furthermore, it is possible to suppress the scattering of water contained in the lower watering mat 33, and it is possible to suppress the corrosion of the support body 31B or the cooling fins of the inner heat exchanger 22B due to the scattered water.

[0064] [Modification of the embodiment] Needless to say, the present disclosure is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the present disclosure. Furthermore, the above embodiments and the modifications described below may be combined in any way as long as they function normally.

[0065] For example, in the configuration of the first embodiment, one cooling unit is supported by the support body 31. Three or more heat exchangers 22 are stored in a row in the left-right direction in the main body of the cooling unit, and one fan 23 is arranged. In addition, an upper watering mat 32 is arranged in a position facing the side openings of the left and right side walls of the main body. Then, the fan 23 may be driven to cool the outer heat exchanger of the three or more heat exchangers 22 with upper cooling air, while cooling the inner heat exchanger with lower cooling air.

[0066] In the first to third embodiments, the air introduction blocking portion 5 does not need to be provided.

[0067] In the first and third embodiments, the rear adjusting plate 314 may be provided with an inflow adjustment hole similar to the inflow adjustment hole 313A, and a second lower watering mat may be arranged to block the inflow adjustment hole. In the first and third embodiments, the front adjusting plate 313 may be provided with a plurality of inflow adjustment holes 313A, and in this case, the plurality of inflow adjustment holes 313A may be blocked by one second lower watering mat, or the plurality of inflow adjustment holes 313A may be blocked by one second lower watering mat each. In the first and third embodiments, instead of the first lower watering mat 33A, an adjusting plate that blocks the space between the two legs 312, 312B may be arranged to prevent the lower cooling air from entering the supports 31, 31B from both the left and right sides of the supports 31, 31B. In the first to third embodiments, a box-shaped support may be applied, an inflow adjustment hole may be formed on the side of the support, and a second lower watering mat that blocks the inflow adjustment hole may be arranged. In the first to third embodiments, for example, the front adjustment plate 313 and the legs 312, 312B are configured as separate members, but they may be configured as a single member.

[0068] [Example] Next, an example of the present disclosure will be described. In this example, a method for setting the height of the support of the refrigerant cooling device will be described. FIG. 12 is an explanatory diagram of a first height setting method of the support. FIGS. 13A and 13B are explanatory diagrams of a second height setting method of the support. Note that the same configurations as those of the refrigerant cooling device 1 of the first embodiment are given the same names and the same reference numerals, and the description will be simplified or omitted. Reference numerals will be omitted for some of the configurations that are the same as those of the refrigerant cooling device 1 of the first embodiment.

[0069] <First height setting method: When there are two air inlets below the support placement part> First, a method for setting the height of the support 31C in a configuration in which there are two air inlets below the placement portion of the support, specifically, in a total of two inlets, one in the space between the two legs 312C on the left side and one in the space between the two legs 312C on the right side, as shown in Fig. 12, will be described. When each parameter of the refrigerant cooling device 1C is defined as shown in Fig. 12, the height H mount(m) can be set based on the following equations (4), (5), (6), and (7). V2=V max ×(N-1) … (4) V hex =V2 / (2N-2) … (5) u hex =V hex / (W hex ×H hex ) … (6) H mount =(N-1)×H hex ×cos α×u hex / β … (7) V2: Total volume of air flowing below the mounting portion 311C of the support 31C (m 3 / sec) V max : Maximum airflow of fan 23 of cooling unit 2 (m 3 / sec) N: Number of cooling units 2 constituting the refrigerant cooling device 1C (units) V hex : Volume of air flowing into one heat exchanger 22 (m 3 / sec) u hex : Wind speed of air flowing into one heat exchanger 22 (m / sec) W hex : Length between tube sheets of heat exchanger 22 (m) H hex : Height of heat exchanger 22 (m) α: inclination angle (°) of the heat exchanger 22 with respect to the vertical plane E β: Critical wind speed of air flowing into one heat exchanger 22 (m / sec)

[0070] For example, as in the third embodiment, when the wind speed at the front surface of the lower water-spraying mat 33 is to be set to 3 m / sec or less, the value of β should be set to 3 m / sec.

[0071] <Second height setting method: When you want to lower the height of the support> The height H of the support calculated based on the above formulas (4) to (7) mountIf the height of the support is too high, the exhaust efficiency of the fan 23 may decrease, as described in the third embodiment. Therefore, the configuration of the refrigerant cooling device and the method of setting the height of the support when it is desired to lower the height of the support will be described.

[0072] For example, the height H of the support calculated based on the above formulas (4) to (7) mount Let us consider the case where satisfies the following equation (8). H mount ≧H hex ×cos α … (8) In this case, by increasing the number of air inlets below the support placement area to three or more locations, the support height H mount 13A and 13B, when there are three air inlets below the mounting part 311D of the support 31D, an inflow adjustment hole 313A is formed in the front adjustment plate 313 that closes the space between the two front legs 312D, and a lower watering mat 33 is disposed to close the inflow adjustment hole 313A. With this configuration, there are a total of three air inlets below the mounting part 311D of the support 31D: the space between the two left legs 312D, the space between the two right legs 312D, and the inflow adjustment hole 313A.

[0073] As shown in FIG. 13 and FIG. 13B, when the parameters of the refrigerant cooling device 1D are defined as follows, the front wind speed u of the lower water-spraying mat 33 (first lower water-spraying mat 33A, second lower water-spraying mat 33B) mat can be set based on the following equations (9), (10), and (11). S = 2 × (H mount ×W mount )+(H hole ×W hole )×γ … (9) V2=V hex ×(2N-2) … (10) u mat =V2 / S … (11) S: Area of ​​the air inlet below the placement section 311D (m 2 ) W mount: Width of the space between the two front (rear) legs 312D (m) H hole : Height of inflow adjustment hole 313A (m) W hole :Width of inflow adjustment hole 313A (m) γ: Number of inflow adjustment holes 313A (pieces)

[0074] For example, when the wind speed at the front surface of the lower water-spraying mat 33 is set to 3 m / sec or less as in the third embodiment, the wind speed at the front surface of the lower water-spraying mat 33 calculated based on the formulas (9) to (11) is mat The height H of the support 31D is set so as to satisfy the following formula (12). mount , the height H of the inflow adjustment hole 313A hole and width W hole You just need to set the value of . u mat ≦3.0 … (12) [Industrial Applicability]

[0075] The present disclosure is applicable to refrigerant cooling devices. [Explanation of symbols]

[0076] 1,1A,1B,1C,1D Refrigerant cooling system 2 Cooling Unit 3,3A,3B Auxiliary cooling device 4, 4A, 4B Air intake section 5 Air intake prevention section 6A Cover 21 Main unit 22 Heat exchanger 22A Outer Heat Exchanger 22B Inner heat exchanger 23 Fan 24 Fixed plate 31,31A,31B,31C,31D Support 32 Upper watering mat 33 Lower watering mat 33A 1st Lower Watering Mat 33B Second lower watering mat 34,34A water supply section 41 Upper introduction part 42, 42A, 42B Lower introduction part 51 Partition plate 61A Front wall part 62A Upper wall part 63A Rear wall part 211 Side opening 211A Outer side opening 211B Inner side opening 212 Lower opening 311, 311B, 311C, 311D Placing part 312, 312B, 312C, 312D Leg part 313 Front adjustment plate 313A Inflow adjustment hole 314 Rear adjustment plate 315, 315A, 315B Communication part 341 Upper water supply part 342 Lower water supply part E Vertical plane P1 Lower end position P2 Heat exchanger facing position

Claims

1. Three or more heat exchangers arranged in a horizontal row; Upper water sprinkling mats are arranged on both ends of the row formed by the heat exchangers; A lower water sprinkling mat arranged below the heat exchanger and the upper water sprinkling mat; A water supply unit that supplies water to the upper watering mat and the lower watering mat; The upper cooling air from which the heat of vaporization has been removed as the water evaporates from the upper watering mat is guided to the outer heat exchanger facing the upper watering mat, while the lower cooling air from which the heat of vaporization has been removed as the water evaporates from the lower watering mat is guided to the inner heat exchanger not facing the upper watering mat. Refrigerant cooling equipment.

2. The cooling air passage is configured to prevent the cooling air from being introduced into the outer heat exchanger.

2. The refrigerant cooling device of claim 1.

3. The cooling system further includes a box-shaped main body that houses the two heat exchangers that are arranged in the horizontal direction, and two or more cooling units that have a fan that exhausts air from within the main body and are arranged in a row in the horizontal direction, The main body includes side openings formed at positions facing the two heat exchangers, respectively, and a lower opening formed below the two heat exchangers, The upper water-spraying mats are disposed on both ends of the row formed by the cooling units, The air introduction section is configured to guide the upper cooling air to the outer heat exchanger through the outer side opening facing the upper watering mat, while guiding the lower cooling air to the inner heat exchanger through the lower opening.

3. The refrigerant cooling device of claim 2.

4. A support body that supports the two or more cooling units from below is further provided, The lower water-spraying mat is disposed at a position facing the side of the support, The support has a communicating portion formed thereon that communicates between a portion of the side of the support facing the lower water sprinkling mat and an upper surface of the support, The air introduction section is configured to guide the lower cooling air to the inner heat exchanger through the communication section and the lower opening.

4. The refrigerant cooling device of claim 3.

5. The adjacent cooling units are supported by the support body so as to be spaced apart from each other, the refrigerant cooling device further includes a cover portion that covers an area between the adjacent cooling units and prevents air introduced between the cooling units via the communication portion from leaking to the outside of the cooling units; The air introduction section is configured to guide the lower cooling air to the inner heat exchanger through the communication section, the region between the adjacent cooling units, and the inner side opening that does not face the upper watering mat, 5. The refrigerant cooling device of claim 4.

6. The interval between the adjacent cooling units is set so that the difference between the wind speed of air at a position facing the inner heat exchanger in the adjacent cooling units and the wind speed of air passing through a lower end of the region between the inner heat exchangers is 10 m / sec or less.

6. The refrigerant cooling device of claim 5.

7. The communication portion is configured so that the wind speed of the air passing through the lower watering mat is 3 m / s or less.

7. A refrigerant cooling device according to any one of claims 4 to 6.

8. The lower water sprinkling mat is disposed at each of a plurality of locations aligned in the circumferential direction of the support on the side of the support, The communication portion is configured to communicate the plurality of portions of the support body with an upper surface of the support body.

8. A refrigerant cooling device according to any one of claims 4 to 7.

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