JP7439156B2 - cooling tower - Google Patents

Description

The present invention relates to cooling towers.

Conventionally, cooling towers have been used to cool and circulate hot water discharged from equipment in factories, air conditioning equipment in buildings, etc.

A cooling tower usually includes a heat exchange section that cools hot water, and the heat exchange section is composed of a filler that vaporizes the supplied hot water by contacting it with outside air. In order to improve the cooling efficiency of hot water, cooling towers are devised to sufficiently distribute hot water to the heat exchange section.

For example, the cooling tower described in Patent Document 1 has a hot water tank provided above a heat exchange part, and the bottom wall of the hot water tank has a plurality of water sprinkling holes along the flow direction of the hot water to be supplied. is provided, and is configured to be able to spray hot water at a plurality of locations in the heat exchange section through the water spray holes. Further, in the cooling tower of Patent Document 1, a water sprinkling hole located on the downstream side in the flow direction of hot water is provided with a tubular member that extends upward from the bottom wall of the hot water tank in a cylindrical shape and has an open top end. (Figure 5 of Patent Document 1). According to such a cooling tower, when the water level of the hot water tank is lower than the height of the tubular member, sprinkling of hot water from the water sprinkling hole provided with the tubular member is prevented. Therefore, when the amount of hot water supplied is small, a drop in the water level of the hot water tank is suppressed. In addition, if the amount of hot water supplied is large and the water level in the hot water tank is higher than the height of the tubular member, hot water may also be supplied from the water sprinkling hole provided with the tubular member through the opening at the upper end of the tubular member. Water is sprinkled.

In addition, the cooling tower described in Patent Document 2 includes a first tubular member and a second tubular member that opens at a higher position than the first tubular member, as a tubular member that is opened only at the upper end similar to Patent Document 1. It is equipped with a member. Thereby, the amount of watering can be adjusted in stages according to changes in the water level.

Patent No. 6190306 Utility Model Application No. 61-192198

However, in the cooling tower of Patent Document 1, hot water is preferentially discharged from the upstream sprinkling holes that are not equipped with tubular members, so there is no improvement in making the downstream sprinkling holes function effectively. There's room.

Furthermore, the tubular members described in Patent Document 1 and Patent Document 2 have only one opening at the top end, and the opening surface at the top end spreads in the horizontal direction (there is no spread in the vertical direction). (because of this), they lack the ability to change the amount of hot water flowing into the pipes in response to changes in water level.

In view of the above circumstances, the present invention is intended to solve any of the above problems. That is, the present invention provides a cooling tower that is excellent in effectively functioning the watering holes from the upstream side to the downstream side in the flow direction of hot water in a hot water tank, or that is excellent in changing the amount of watering depending on the amount of hot water supplied. The challenge is to provide.

The cooling tower according to the present invention includes:
A heat exchange unit that cools hot water;
a hot water supply section that supplies hot water to the heat exchange section;
a hot water tank that relays hot water supplied from the hot water supply unit to the heat exchange unit,
The hot water tank is provided above the heat exchange section, and has a plurality of water sprinkling holes provided in the bottom wall along the flow direction of the hot water supplied from the hot water supply section, and the heat exchanger is provided through the water sprinkling holes. It is configured so that hot water can be sprayed at multiple locations in the area.
The hot water tank further includes a tubular member having a side wall extending upward from the bottom wall in a cylindrical shape,
the tubular member has an inflow hole through which hot water flows;
The tubular member is provided in at least a portion of the water spray hole located on the upstream side in the flow direction,
The side wall of the tubular member is provided with the inflow hole at a position higher than the bottom wall,
In the water sprinkling hole provided with the tubular member, sprinkling of hot water is prevented until the water level of the hot water reaches the inflow hole.

According to this configuration, at the upstream water sprinkling hole provided with the tubular member, sprinkling of hot water is blocked until the water level of hot water reaches the inflow hole, so that the amount of water that is Hot water flows downstream.
Further, since the inflow hole is provided in the side wall of the tubular member, the amount of hot water flowing in can be gradually changed between the lower end and the upper end of the inflow hole.
Therefore, the water sprinkling holes can be made to function effectively from the upstream side to the downstream side in the flow direction of hot water in the hot water tank, and the amount of water sprinkling can be changed depending on the amount of hot water supplied.

Furthermore, the cooling tower according to the present invention includes:
A heat exchange unit that cools hot water;
a hot water supply section that supplies hot water to the heat exchange section;
a hot water tank that relays hot water supplied from the hot water supply unit to the heat exchange unit,
The hot water tank is provided above the heat exchange section, and has a plurality of water sprinkling holes provided in the bottom wall along the flow direction of hot water supplied from the hot water supply section, and the heat exchanger is provided through the water sprinkling holes. It is configured so that hot water can be sprayed at multiple locations in the area.
The hot water tank further includes a tubular member having a side wall extending upward from the bottom wall in a cylindrical shape,
the tubular member has an inflow hole through which hot water flows;
The tubular member includes a first inflow hole provided at a position higher than the bottom wall, and a second inflow hole provided at a higher position than the first inflow hole. the inflow hole is provided,
The side wall of the tubular member is provided with the first inflow hole.

According to such a configuration, since the first inflow hole and the second inflow hole are provided at different formation positions in the height direction in the tubular member, and the first inflow hole is provided in the side wall of the tubular member, It is excellent in changing the amount of watering depending on the amount of hot water supplied.

Further, in the cooling tower according to the present invention, preferably, the upper end of the tubular member is open, and the opening is provided as the second inflow hole.

According to this configuration, since the tubular member is provided with the second inflow hole as described above, overflow of hot water from the hot water tank can be suppressed.
In addition, since one tubular member is provided with a first inflow hole for adjusting the inflow amount and a second inflow hole for preventing overflow, the tubular member for adjusting the inflow amount and the tubular member for preventing overflow can be separately installed. The number of installed tubular members can be reduced compared to the embodiment in which the tubular member is provided. Then, the number of effective water spray holes at a water level that does not reach the height of the inflow hole can be increased by this decrease.

Further, in the cooling tower according to the present invention, preferably, the tubular member further includes a third inflow hole located higher than the first inflow hole and lower than the second inflow hole.

According to such a configuration, since the tubular member is provided with the third inflow hole as described above, it becomes easy to change the amount of hot water flowing into the pipe according to a change in the water level. That is, it becomes easy to adjust the amount of water sprinkled according to the amount of hot water supplied.

Further, in the cooling tower according to the present invention, preferably, the inflow hole provided in the side wall of the tubular member opens toward the downstream side in the flow direction.

According to such a configuration, since the inflow hole in the side wall opens toward the downstream side in the flow direction, hot water flows into the inflow hole in a detour around the tubular member, so that the water spray Water sprinkling from the holes is likely to be blocked. Therefore, the hot water whose inflow is blocked in this way becomes easier to flow downstream. In addition, hot water flowing from the upstream side hits the side walls and spreads, making it easier to spread throughout the room.

Furthermore, the cooling tower according to the present invention preferably includes:
The bottom wall has a hot water fall area that receives hot water falling from the hot water supply section,
All of the water sprinkling holes provided outside the hot water falling area are provided with the tubular member.

According to such a configuration, more water holes can be made to function effectively. Specifically, the water sprinkling holes provided in the hot water falling area naturally function effectively for water sprinkling even if no tubular member is provided. In addition to this, all the water sprinkling holes provided outside the hot water falling area are provided with tubular members, so that the water level in the hot water tank can be increased by the height of the tubular member up to the first inflow hole. Since it is easier to maintain the hot water, it is easier to spread the hot water to the end of the bottom wall. When the hot water reaches the end of the bottom wall, the water level rises over the entire area of the bottom wall due to further supply of hot water, making it easier for hot water to flow into all the tubular members. Therefore, many water sprinkling holes can be made to function effectively, and moreover, it is possible to spray water uniformly from each water sprinkling hole, which is effective for water sprinkling.

Further, in the cooling tower according to the present invention, preferably, the tubular member is detachably attached to the bottom wall.

According to such a configuration, since the tubular member is detachable, it becomes easy to make adjustments to increase the number of effectively functioning water spray holes. For example, if a hot water tank has areas where hot water flows easily and areas where hot water does not flow easily, it is desirable to optimize the installation of the tubular member. In such cases, the optimization task is facilitated by the fact that the tubular member is removable.
Furthermore, since the tubular member is detachable, repair work on the tubular member is facilitated.

As described above, according to the present invention, the water sprinkling holes can be made to function effectively from the upstream side to the downstream side in the flow direction of hot water in the hot water tank, and the amount of water sprinkling can be changed according to the amount of hot water supplied. A cooling tower can be provided.

1 is a cross-sectional view of a cooling tower according to one embodiment. FIG. 2 is a diagram when the hot water tank according to one embodiment is viewed from above, showing a buffer member together with the hot water tank. FIG. 3 is a diagram showing the arrangement of tubular members in a cooling tower according to an embodiment. FIG. 4 is an enlarged perspective view of the tubular member of FIG. 3;

DESCRIPTION OF THE PREFERRED EMBODIMENTS A cooling tower according to an embodiment of the present invention will be described below with reference to the drawings. In addition, in the cooling tower 100 of FIG. 1, the first direction parallel to the horizontal plane will be referred to as the left-right direction (D1), and the second direction perpendicular to the left-right direction and parallel to the horizontal plane will be referred to as the front-back direction (D2). , a third direction orthogonal to both the left-right direction and the front-back direction may be referred to as the up-down direction (D3).

As shown in FIG. 1, the cooling tower 100 according to the present embodiment includes a square column-shaped tower body 100a that accommodates a heat exchange section 1, an air flow generation section 2 that generates an air flow F inside the tower body 100a, and a A hot water supply section 3 that supplies hot water to the exchange section 1, a hot water tank 4 that relays the hot water supplied from the hot water supply section 3 to the heat exchange section 1, and a hot water tank 4 that stores the hot water cooled in the heat exchange section 1 as cold water. A cold water tank 5 is provided. In the cooling tower 100 of this embodiment, a square columnar cavity V extending in the vertical direction is provided in the center of the tower body 100a, and the heat exchange section 1 is arranged around the cavity V. In addition, the cooling tower 100 of the present embodiment includes an airflow generation section 2 disposed above the cavity V, a hot water tank 4 disposed above the heat exchange section 1, and a hot water tank 4 disposed below the heat exchange section 1. A cold water tank 5 is provided.

The airflow generation section 2 includes a large-diameter nozzle 21 formed to extend upward from the upper surface of the tower body 100a, and a blower 22 housed in the nozzle 21. The blower 22 is arranged so as to generate an airflow F that moves upward inside the nozzle 21 when driven. That is, the airflow generating section 2 is configured so that the air in the cavity V can be sucked out by the blower 22 and moved upward.

The hot water supply section 3 is provided above the hot water tank 4. The hot water supply section 3 has a hot water discharge section 31 that discharges hot water into the hot water tank 4 . The hot water discharge section 31 has a discharge opening 311 that opens toward the hot water tank 4 (downward).

The heat exchange section 1 includes a plurality of cooling sections 11 that cool hot water by bringing it into contact with outside air. Each cooling unit 11 has a plurality of block-shaped fillers stacked up and down. Each filler is composed of a plurality of filler sheets. The filler sheet has a parallelogram shape in plan view, and has a plurality of protrusions on one side. Each filler is shaped like a block by arranging a plurality of filler sheets vertically arranged in the front-rear direction. In addition, each filler sheet creates a gap between each filler sheet that can become a passage for airflow F by bringing the tip of the protrusion of one filler sheet into contact with another adjacent filler sheet. is formed.

Each cooling unit 11 has a square column shape by stacking block-shaped fillers in multiple stages in the vertical direction. In this embodiment, a pair of cooling units 11 are provided on both sides of the cavity V in the left-right direction. Each cooling part 11 is arranged so that the gap of the filler material communicates with the cavity V. As the airflow generator 2 sucks out the air in the cavity V, outside air is drawn into the gap in the filler.

Each cooling unit 11 has a rectangular upper surface 111 in plan view that receives hot water supplied from the hot water tank 4 . The upper surface 111 has a pair of long edges extending in the front-rear direction and a pair of short edges extending in the left-right direction. In each cooling unit 11, filler sheets are lined up in the front-rear direction (in the direction in which the long edges of the upper surface 111 extend).

One hot water tank 4 is provided above each cooling unit 11 . A discharge opening 311 of the hot water supply section 3 is arranged above each hot water tank 4 .

As shown in FIGS. 2 and 3, each hot water tank 4 has a rectangular bottom wall 41 facing the upper surface 111 of the cooling unit 11, and a peripheral side wall 42 rising from the outer periphery of the bottom wall 41. The bottom wall 41 is formed to extend along a horizontal plane. More specifically, the upper surface of the bottom wall 41 is formed to extend along a horizontal plane. The circumferential wall 42 has a pair of short wall portions 421 extending in the left-right direction and a pair of long wall portions 422 extending in the front-rear direction. The bottom wall 41 and the circumferential wall 42 form a hot water storage space inside. Note that the water level at which hot water overflows from the hot water tank 4 is referred to as the limit water level of the hot water tank 4.

The bottom wall 41 is provided with a plurality of circular water sprinkling holes 43 for sprinkling hot water. The plurality of water sprinkling holes 43 are formed along the flow direction of hot water. The hot water that has reached the water sprinkling hole 43 (or the inflow hole 72 of the tubular member 7 described later) falls onto the upper surface 111 of the cooling unit 11 via the water sprinkling hole 43 (passing through the pipe of the tubular member 7) due to the action of gravity. do. Thereby, the hot water tank 4 can spray hot water to a plurality of locations in the heat exchange section 1 via each water spray hole 43.

The opening area of each water sprinkling hole 43 is smaller than the opening area of the discharge opening 311 of the hot water supply section 3.

The plurality of watering holes 43 of this embodiment form a matrix by being arranged in the front-rear direction D2 and the left-right direction D1. Specifically, as shown in FIG. 2, the matrix includes the first to Mth rows in which a plurality of watering holes 43 are lined up in the front-rear direction D2 (any row selected from these is defined as the m-th row). and 1st to Nth rows (any row selected from these is referred to as the nth row) in which a plurality of watering holes 43 are arranged in the left-right direction D1. In the plurality of water sprinkling holes 43 of this embodiment, the formation positions of the water sprinkling holes 43 in the adjacent m-th row and m+1 row are aligned in the front-rear direction D2, and the formation positions of the water sprinkling holes 43 in the adjacent n-th row and n+1-th row are aligned. The formation positions of the water spray holes 43 are aligned in the left-right direction D1, thereby forming a grid pattern. Note that the formation positions of the water sprinkling holes 43 in the adjacent m-th row and the m+1-th row may be shifted in the front-rear direction D2, and the formation positions of the water-sprinkling holes 43 in the adjacent n-th and n+1-th columns may be shifted. may be displaced in the left-right direction D1.

The cooling tower 100 of this embodiment includes a buffer member 6 that buffers the force of hot water falling from the discharge opening 311 of the hot water supply section 3 toward the bottom wall 41 of the hot water tank 4 . As shown in FIGS. 2 and 3, the buffer member 6 of the present embodiment is formed in a rectangular box shape, and is disposed between the discharge opening 311 and the bottom wall 41 to prevent hot water from falling. It has a buffer wall 61 as a bottom wall that buffers the force, a peripheral side wall 62 rising from the outer periphery of the buffer wall 61, and an upper wall 63 facing the buffer wall 61. The buffer member 6 has a receiving hole 631 in the upper wall 63 for receiving the hot water falling from the discharge opening 311 therein. Further, the buffer member 6 has a plurality of discharge holes 611 in the buffer wall 61 for discharging (dropping) hot water received therein toward the bottom wall 41 of the hot water tank 4 .

The buffer wall 61 is arranged above the bottom wall 41 of the hot water tank 4. Moreover, the buffer wall 61 is formed so as to spread along a horizontal plane, in other words, it is formed so as to be parallel to the bottom wall 41 of the hot water tank 4 . The buffer wall 61 of this embodiment is formed to cover the bottom wall 41 in the left-right direction D1. On the other hand, the buffer wall 61 of this embodiment is formed so as to face only the water sprinkling hole 43 located in the central region in the front-rear direction D2.

Here, in this specification, the area in the bottom wall 41 of the hot water tank 4 where the hot water from the discharge hole 611 directly falls is referred to as a hot water falling area. In this embodiment, the hot water fall area is an area where the discharge hole 611 in the bottom wall 41 faces.

Each discharge hole 611 is formed in a linear shape extending in the front-rear direction D2. Each discharge hole 611 is formed parallel to each other. The buffer wall 61 of this embodiment has a plurality of discharge holes 611 formed in a linear shape extending in the front-rear direction D2, thereby forming a horizontal lattice shape.

The buffer member 6 of this embodiment is fixed to the peripheral side wall 42 of the hot water tank 4. Specifically, the upper wall 63 of the buffer member 6 extends above the pair of long wall portions 422 of the hot water tank 4 . The upper wall 63 and each long wall portion 422 are fixed by a bonding material such as a bolt.

In the bottom wall 41 of this embodiment, the hot water that has fallen from the discharge hole 611 of the buffer wall 61 flows from the center of the bottom wall 41 in the front-rear direction D2 toward each short wall portion 421 and each long wall portion 422. Further, the hot water that impinges on each long wall portion 422 may flow along each long wall portion 422 . In this way, the hot water tank 4 of this embodiment is configured so that hot water tends to flow along the front-rear direction D2 of the bottom wall 41 (the direction in which the long wall portion 422 extends). For this reason, in the present embodiment, of any two water sprinkling holes 43, the water sprinkling hole 43 that is closer to the hot water falling area in the front-rear direction D2 is referred to as the upstream water sprinkling hole; The water sprinkling hole 43 that is further away from the water sprinkling hole 43 can be referred to as the downstream water sprinkling hole.

As shown in FIGS. 3 and 4, the cooling tower 100 of this embodiment further includes a cylindrical tubular member 7 extending upward from the bottom wall 41 of the hot water tank 4. As shown in FIGS. The tubular member 7 has a cylindrical side wall 71 rising from the bottom wall 41 of the hot water tank 4, and is provided with a plurality of inflow holes 72 for allowing hot water to flow into the pipe. The plurality of inflow holes 72 include a side wall inflow hole 721 that penetrates the side wall 71 . Further, the upper end of the tubular member 7 is an open end, and a circular upper end inflow hole 722 having a diameter common to the inner diameter (diameter) of the tubular member 7 is provided. The tubular member 7 of this embodiment is provided with a plurality of side wall inflow holes 721. Further, the side wall 71 includes a base end region 711 that provides a height between the lower end of the lowermost side wall inflow hole 721 and the bottom wall 41 . Note that the number of side wall inflow holes 721 provided in the tubular member 7 may be only one. Further, the tubular member 7 does not need to be provided with the upper end inflow hole 722. That is, the tubular member 7 may be closed at the upper end.

The base end region 711 extends upward from the bottom wall 41 and prevents hot water from flowing into the tubular member 7 until the water level of the hot water tank 4 reaches the lower end of the side wall inlet hole 721 located at the lowest position. This is an area that prevents

The upper end inflow hole 722 is formed larger than the side wall inflow hole 721. That is, the tubular member 7 has two or more inflow holes 72 formed at different positions in the vertical direction, and the upper inflow hole 72 is formed to have a larger opening area than the lower inflow hole 72. .

The plurality of side wall inflow holes 721 are provided at different formation positions in the vertical direction. More specifically, the plurality of side wall inflow holes 721 include a first side wall inflow hole 721a that starts inflow of hot water at a first water level, and a first side wall inflow hole 721a that starts inflow of hot water at a second water level higher than the first water level. and a third side wall inflow hole 721c that starts the inflow of hot water at a third water level higher than the second water level. This makes it easier to change the amount of water sprinkled depending on the amount of hot water supplied.

Further, the plurality of side wall inflow holes 721 are formed such that the opening area becomes larger as the formation position becomes higher. More specifically, as shown in FIG. 4, the plurality of side wall inflow holes 721 have an opening area of the first side wall inflow hole 721a, the second side wall inflow hole 721b, and the third side wall inflow hole 721c in this order. It is designed to grow larger. This makes it easier to change the amount of water sprinkled depending on the amount of hot water supplied.

Each side wall inflow hole 721 may be provided so as to fit within a half circumference of the tubular member 7, or may be provided so as to fit within a quarter circumference of the tubular member 7. Each side wall inflow hole 721 may have its center located on a straight line extending in the up-down direction D3. On the other hand, when the center positions of the side wall inflow holes 721 are different, the upper end of the lower side wall inflow hole 721 is located higher than the lower end of the upper side wall inflow hole 721 among the vertically adjacent side wall inflow holes 721. You may do so. This allows the hot water inflow area to continue increasing as the water level rises.

Although the inflow hole 72 of this embodiment has a circular shape, the inflow hole 72 is not limited to this, and may have an elliptical shape or a rectangular shape.

In the tubular member 7 of this embodiment, the outer diameter of the side wall 71 is formed to be larger than the diameter of the water sprinkling hole 43 so as to surround the water sprinkling hole 43 . In addition, the outer diameter of the side wall 71 of the tubular member 7 may be formed to be smaller than the diameter of the water sprinkling hole 43 so that the tubular member 7 can be inserted into the water sprinkling hole 43 . In this case, the side wall 71 has a lower end portion formed to have an outer diameter smaller than the diameter of the water sprinkling hole 43 so as to be able to be inserted into the water sprinkling hole 43, and a lower end portion formed to extend upward from the lower end portion and having an outer diameter smaller than the diameter of the water sprinkling hole 43. It is preferable to have a contact portion that is formed larger than the diameter and can come into contact with the upper surface of the bottom wall 41.

The tubular member 7 of this embodiment further includes a member main body 7a including a side wall 71, and a nozzle portion 7b extending downward from the lower end of the member main body 7a. The nozzle portion 7b is provided so as to extend below the bottom wall 41 through the water spray hole 43. The nozzle portion 7b is configured to diffuse the hot water to be discharged in all directions. In addition, the nozzle part 7b may be configured to discharge hot water in a straight line, and in this case, a baffle plate is provided below the nozzle part 7b so as to intersect with the falling direction of the hot water. Preferably. This facilitates the dispersion of hot water into the cooling section 11.

The height of the portion of the tubular member 7 exposed upward from the bottom wall 41 (height from the bottom wall 41 to the upper end of the tubular member 7) is usually less than the limit water level of the hot water tank 4, and specifically, It is 75% or less of the critical water level.

The opening area of each of the side wall inflow holes 721 is usually smaller than the opening area of the nozzle portion 7b, preferably 80% or less, and more preferably 70% or less of the opening area of the nozzle portion 7b. On the other hand, the opening area of the upper end inflow hole 722 is preferably at least the opening area of the nozzle part 7b, more preferably twice or more, and even more preferably five times or more the opening area of the nozzle part 7b. . For example, when the opening area of the nozzle part 7b is 660 mm ² (φ29), the opening area of each inflow hole 72 is 50 to 452 (φ8 to 24) mm ² for the side wall inflow hole 721, and the opening area for the upper end inflow hole 722 is 660 mm 2 (φ29). It is preferably 660 mm ² to 7850 mm ² .

The tubular member 7 of this embodiment is provided to be detachable from the bottom wall 41. Note that the tubular member 7 may be integrated with the bottom wall 41.

In this embodiment, all the water sprinkling holes 43 outside the hot water falling area are provided with tubular members 7. That is, one tubular member 7 is provided for one water spray hole 43 located outside the hot water falling area.

Note that the installation is not limited to the above, and the tubular member 7 is not provided in the water sprinkling hole 43 located in the hot water falling area, and is located within 50 cm from the outer edge of the hot water falling area. It may be provided in all the water sprinkling holes 43. In addition, the tubular member 7 may be provided in at least some of the watering holes 43 in an area within a radius of Acm from the center of the discharge opening 311, with the length of 1/3 of the long wall portion 422 being a radius of Acm, The tubular member 7 may be provided in at least some of the water sprinkling holes 43 within a region within a radius of Bcm from the center of the discharge opening 311, where 1/4 of the length of the long wall portion 422 is defined as a radius of Bcm. Furthermore, by observing the state of the cooling tower 100 during use, if there is a region in the bottom wall 41 where hot water tends to stay or a region where hot water tends to flow, the tubular member 7 is installed in the water sprinkling hole 43 in that region. Good too. By doing so, it is possible to prevent hot water from flowing unbalancedly to some of the water sprinkling holes 43, and it is possible to make it easier for hot water to spread to areas where hot water is less likely to flow than the above areas. In other words, hot water can be easily distributed throughout the bottom wall 41.

Although the tubular member 7 of this embodiment is arranged so that the side wall inflow holes 721 open toward the downstream side in the flow direction of hot water, not all the side wall inflow holes 721 open toward the downstream side. For example, the side wall inflow hole 721 may open toward the upstream side, or the side wall inflow hole 721 may open toward the long wall portion 422.

Moreover, the tubular member 7 of this embodiment is arranged so that its upper end is lower than the limit water level of the hot water tank 4. This prevents the hot water from exceeding the limit water level, that is, from overflowing the hot water tank 4.

According to the cooling tower 100 of this embodiment, as hot water is supplied, the water level is maintained at least as high as the base end region 711, making it easier to fill the entire area of the bottom wall 41 with hot water. When the hot water is spread over the entire area of the bottom wall 41, the water level rises over the entire area of the hot water tank 4 due to the further supply of hot water, so that the hot water simultaneously flows into the inlet holes 72 at the same height of each tubular member 7. It becomes easier to do. Therefore, it becomes easier to make more water sprinkling holes 43 function effectively, and uniform water sprinkling onto the upper surface 111 of the cooling unit 11 becomes possible.

Note that the cooling tower according to the present invention is not limited to the above embodiment. Further, the cooling tower according to the present invention is not limited by the above-mentioned effects. The cooling tower according to the present invention can be modified in various ways without departing from the gist of the present invention.

For example, the tubular member may be rotatably provided around the central axis so that the opening direction of the side wall inflow hole can be adjusted.

Moreover, the tubular member may have an adjustment member for adjusting the opening area of the side wall inflow hole and the upper end inflow hole, separately from the member main body. The adjustment member may have an annular shape that can be internally fitted into the side wall inflow hole and the upper end inflow hole, and has an opening smaller than the side wall inflow hole and the upper end inflow hole. The adjustment member may be a commercially available rubber bushing that can be elastically deformed into a smaller shape than the side wall inflow hole or the upper end inflow hole and can be attached to the side wall inflow hole or the upper end inflow hole by elastic restoring force. It may be. The adjustment member may be a member such as a rubber stopper that reduces the opening area of the side wall inflow hole or the upper end inflow hole to zero (closes the opening).

The member main body may be disassembled into a plurality of members. The member main body includes a base member that has a cylindrical shape and extends upward from the bottom wall, and a cylindrical extension member that extends further upward from the base member, and the base member is detachably attached to the bottom wall. The extension member may be detachably attached to the base portion. Thereby, the tubular member can be used in common for multiple types of hot water tanks having different depths.

Further, by providing side wall inflow holes in the extension member, the number of the side wall inflow holes can also be adjusted. That is, if a plurality of extension members are stacked vertically on top of the base member, and the side wall inflow holes are formed in each of the extension members, the number of extension members stacked is equal to the number of extension members to be stacked. The number of side wall inflow holes can be increased. Note that the plurality of extension members may have the same or different size and number of side wall inflow holes. Further, an extension member whose upper end has an opening diameter smaller than the inner diameter or an extension member whose upper end is closed may be used as the adjustment member.

In addition, a plurality of types of member bodies having different thicknesses, diameters and numbers of side wall inflow holes, etc. may be used to form one hot water tank.

In addition to these, the cooling tower of the present invention may not include the buffer member 6. In a cooling tower that does not include the buffer member 6, hot water is directly supplied to the hot water tank 4 from the hot water discharge section 31. In this case, the hot water falling area is the area where the discharge opening 311 in the bottom wall 41 faces.

Further, the tubular member 7 is not limited to a cylindrical shape, but may be a rectangular tube shape.

100: Cooling tower, 100a: Tower body, V: Cavity, 1: Heat exchange section, 11: Cooling section, 111: Top surface, 2: Air flow generation section, 21: Nozzle, 22: Blower, F: Air flow, 3: Hot water Supply section, 31: hot water discharge section, 311: discharge opening, 4: hot water tank, 41: bottom wall, 42: peripheral wall, 421: short wall section, 422: long wall section, 43: watering hole, 5: cold water tank, 6: Buffer member, 61: Buffer wall, 611: Discharge hole, 62: Circumferential wall, 63: Upper wall, 631: Receiving hole, 7: Tubular member, 7a: Member main body, 7b: Nozzle portion, 71: Side wall, 711 : base end region, 72: inflow hole, 721: side wall inflow hole, 722: upper end inflow hole

Claims (7)

A heat exchange unit that cools hot water;
a hot water supply section that supplies hot water to the heat exchange section;
a hot water tank that relays hot water supplied from the hot water supply unit to the heat exchange unit,
The hot water tank is provided above the heat exchange section, and has a plurality of water sprinkling holes provided in the bottom wall along the flow direction of hot water supplied from the hot water supply section, and the heat exchanger is provided through the water sprinkling holes. It is configured so that hot water can be sprayed at multiple locations in the area.
The hot water tank further includes a tubular member having a side wall extending upward from the bottom wall in a cylindrical shape,
the tubular member has an inflow hole through which hot water flows;
The tubular member is provided in at least a portion of the water spray hole located on the upstream side in the flow direction,
The side wall of the tubular member is provided with the inflow hole at a position higher than the bottom wall,
In the water sprinkling hole provided with the tubular member, sprinkling of hot water is prevented until the water level of hot water reaches the inflow hole ,
The cooling tower , wherein the inflow hole provided in the side wall of the tubular member is open toward the downstream side in the flow direction . A heat exchange unit that cools hot water;
a hot water supply section that supplies hot water to the heat exchange section;
a hot water tank that relays hot water supplied from the hot water supply unit to the heat exchange unit,
The hot water tank is provided above the heat exchange section, and has a plurality of water sprinkling holes provided in the bottom wall along the flow direction of the hot water supplied from the hot water supply section, and the heat exchanger is provided through the water sprinkling holes. It is configured so that hot water can be sprayed at multiple locations in the area.
The hot water tank further includes a tubular member having a side wall extending upward from the bottom wall in a cylindrical shape,
the tubular member has an inflow hole through which hot water flows;
The tubular member includes a first inflow hole provided at a position higher than the bottom wall, and a second inflow hole provided at a higher position than the first inflow hole. the inflow hole is provided,
A cooling tower, wherein the side wall of the tubular member is provided with the first inlet hole. The cooling tower according to claim 2, wherein the upper end of the tubular member is open, and the opening is provided as the second inflow hole. The cooling tower according to claim 2 or 3, wherein the tubular member further includes a third inflow hole located higher than the first inflow hole and lower than the second inflow hole. The cooling tower according to any one of claims 2 to 4, wherein the inflow hole provided in the side wall of the tubular member is open toward the downstream side in the flow direction. The bottom wall has a hot water fall area that receives hot water falling from the hot water supply section,
The cooling tower according to any one of claims 1 to 5, wherein all the watering holes provided outside the hot water fall area are provided with the tubular member. The cooling tower according to any one of claims 1 to 6, wherein the tubular member is detachably attached to the bottom wall.