JPS61186782A - Cooling tower - Google Patents

Abstract

PURPOSE:To make it possible to prevent a white smoke from generating and to make the title cooling tower having a high practicability without installing a heat exchanger or a heat pipe by forming passages exclusively used for air at every arbitrary intervals at least every alternate interval among a large number of the uppermost stage fillers. CONSTITUTION:When passages 20 exclusively used for air where dispersed water does not utterly flow are provided in the uppermost filter unit 14 of at least fillers of two stages stacked vertically, air passing through these passages is heat-exchanged in a vapor-liquid non-contact manner through hot water of relatively high temperature and a filler plate 13. Therefore, air temperature of which is raised, enters a space 25, and mixes with air of a high humidity by other vapor liquid contact to lower the temperature of this portion, and air is discharged through a gas exhausting port 26. accordingly, the mixed air is not immediately liquefied formed into a white smoke even when it comes into contact with external air having a temperature which is lower than that of exhaust air and sufficient effect can be displayed and the capacity increase of the cooling tower is almost none.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical field to be used] The present invention relates to a cross-flow type cooling tower that does not generate white smoke (wet steam) from the upper exhaust port.

[Prior art]

Generally, when white smoke is emitted from the exhaust port of a cooling tower, nearby residents feel disgusted as if it is polluting the outside air, and at night, when red light hits the smoke, there is a risk that it may be mistaken for a fire. However, there is a risk that the mental health of nearby residents or firefighting activities may be affected, and in recent years there has been an increase in the number of buildings that do not emit white smoke.

The applicant company of this application has already applied
In No. 2781 and Japanese Patent Publication No. 59-24788, a coil for passing hot water that has not yet been cooled among the water to be cooled is installed near or inside the exhaust port, or a heat pipe is installed to remove the air to be exhausted. We have developed a device that slightly heats the water and exhausts it to the outside, and have had some success.

However, these special hot water coils and heat pipes are quite expensive, and in order to incorporate them into the cooling tower itself, a special structure must be constructed, which increases the cost of the cooling tower itself and is slow to become widespread. 〇 [Problem to be solved] This invention can prevent white smoke by making a part of the inexpensive filler have a special structure, and it does not require the use of conventional particularly expensive heat exchangers or The objective is to create a highly practical cooling tower that does not require the installation of a heat sink.

[Means for solving problems]

This invention is a cross-flow type cooling system in which a number of filler units are stacked vertically in at least two layers, each consisting of a large number of filler plates having uneven surfaces on which the water to be cooled is sprayed and flows down. In the column, among the many packing material plates in the uppermost stage of the packing material unit, air-only passages are formed between the packing materials at least every other space at arbitrary intervals from the suction side to the discharge side. The problem was solved by creating a cooling tower that is characterized by:

[Embodiment]

The present invention will now be described based on representative embodiments shown in the drawings.

In Figure 1, numeral 10 is a cooling tower, and the two opposing sides of its outer casing 11 are full air intake ports 12, and inside the air intake ports 12, there is a cooling tower that stands up at right angles to the surface containing these. The filler unit 14, which is composed of a large number of filler plates 13 made of thin synthetic resin plates, is provided in at least two stages, one above the other. 15, and a lower water tank 16 for receiving cooled water is provided at the bottom.

In particular, in the present invention, between at least every other filler plate 13 among the many filler plates 13 constituting the uppermost one of the filler units 14, an air-only passage 20 through which only air passes is provided. It is provided.

In the case shown in Fig. 3, adjacent filler plates 13iC
Air-only passages 20 are formed on the lower sides of the capped elongated cap plates 21.

In the embodiment shown in FIG. 4, the top edges 22 of adjacent filler plates 13 are bonded together in a watertight manner, and an air-only passage 2 is provided below.
0 is the formation.

In the embodiment shown in FIG.
A filler plate 14 made of a corrugated plate having a shape of 3 is used, and adjacent filler plates 14 are arranged so that the ridges 23 of the corrugated plates match each other, so that at least the uppermost ridges 23 are watertight. A plurality of air-only passages 20 extending horizontally are formed in a hierarchical manner between them by adhering to each other.

The cap plate 21 shown in Figure 3 is shown as a fixed type between specific filler plates 13, but it may be movable between different spaces, detachable, or 1- As shown in FIG. 6, it is an open/close type, and any number of air passages 20 may be individually or interlocked to make the number of air-only passages 20 variable.

25 is a space formed inside the filling material unit 14, and 26 is an exhaust port, which is equipped with a blower 27.

[For production]

As in a normal cross-flow cooling tower, when hot water to be cooled is supplied to the upper water tank 15, this water is first uniformly spread over the upper packing material units) 14, and then covers the surface of each of these filling material plates 13. However, in each air passage 20,
A cap plate 21 is attached over adjacent filler plates 13,
Since the fillers 13 are bonded to each other in a watertight manner, water does not run down the surfaces of the filler plates 13 facing the air-only passages 20, respectively.

The water flowing down the surfaces of the upper filler plates 13 is collected in the middle water tank 24, and is then transferred to the lower filler unit 14 again.
It is scattered above, flows down the surface of all the filler plates 130 in the lower stage as a wet wall, and is collected in the lower water tank 1f5.

On the other hand, the air sucked in from each of the outside air intake ports 12 cools the water flowing down through contact with low-temperature outside air and latent heat of vaporization in areas where water is sprayed from above to form the wi wall.

However, the air-only passage 2 of the upper filling material unit
0, the inner surface is not glassy at all and the air-only passage 2
On the other side of the filler plate 13, which constitutes the boundary wall, water, which is still relatively high in temperature, flows down. The air is heated by heat exchange with the air, and the humidity is mixed with water and air and exhausted to the outside from the upper exhaust port 26.

〔effect〕

In this invention, the air-only passage 20 in which the water sprayed from the meeting point to φ does not flow at all is provided in the small filler unit 14 that is stacked up and down (both are the uppermost filler unit of the two-tier filler unit 14). Since the air passing through these air-only passages 20 is provided as described in 5 above, heat is exchanged with relatively high-temperature hot water via the filler plate 13 without contact with gas and liquid, without increasing humidity. , the air whose temperature has increased enters the space 25, mixes with other humid air through gas-liquid contact, lowers the humidity in this area, and exits the exhaust port 26.
Emit more.

Therefore, even if it comes into contact with outside air whose temperature is lower than that of the exhaust air, it will not directly liquefy and turn into white smoke, but will be diffused until liquefaction occurs due to the temperature drop, and virtually no white smoke will turn into white smoke. It is not visible to the naked eye, and even if temporary night lighting is applied, the reflected light will not be visible.

Furthermore, the present invention does not require a special structure for attaching expensive hot water coils, heat vibrators, etc. to the outer casing and exhaust port of the cooling tower 10 or the passages leading thereto, and instead uses an extremely low-cost structure that is usually formed by vacuum molding a thin sheet of synthetic resin. Just by providing an air-only passage 20 with a part of the filler plate 13, a sufficient effect can be achieved, and there is almost no increase in the volume of the cooling tower, and there is no increase in cost. Even in
By rearranging the filler plate 13, the device f of the present invention can be
tK can be changed.

[Effects of embodiment]

In the case where the air-only passage 2.0 is formed by attaching the support plate 21 to the top of the adjacent filler plate 13, the filler plate 13 of a special shape is not required and the support plate 21 It can be formed by installing with a chisel, and the structure is simple.

In addition, if the support plate 21 is removable, the number of support plates 21 can be changed depending on the outside temperature; if the support plate 21 is watertightly bonded, it becomes more robust and does not require a support plate.

In order to configure the air-only passages 20, in the case where an independently openable and closable support plate 21 is provided at the upper edge of the filler plate, the number of air-only passages can be increased or decreased by simply opening and closing this. When the necessity is low, such as in the summer, the cooling tower 10 is fully opened so that the heat exchange efficiency of the entire cooling tower 10 can be effectively utilized.

As shown in FIG. 1, if the water tank 24 is installed in the middle stage of 5-1, and the water once received is sprinkled again, water can also be sprayed on the filler plate 13 in the lower stage directly under the upper air-only passage 20. , the heat exchanger 54 of the lower filler unit has the same effect as the conventional example.

[Brief explanation of drawings]

The drawings show typical embodiments according to the present invention, and Fig. 1 is a vertical side view, Fig. 2 is a front view as viewed from the arrow 2-2#, Fig. 3 is a front view, Fig. 4 is a spear, and Fig. 4 is a longitudinal side view. Figures 5 and 6 are front views showing embodiments of the air-only passage. Main symbols in the diagram 10...Cooling tower, 12...Outside air intake, 13
...Filler plate, 14...Filler unit, 20...Air exclusive passage. Patent applicant: Shinsou Sangyo Co., Ltd. Q"',',rii" Agent: Patent attorney Yamada Kingdom and εF

Claims (1)

[Scope of Claims] 1) A filling material unit including a large number of filling material plates standing in parallel and having uneven surfaces on which the water to be cooled is sprayed and flows down is provided in at least two vertically stacked layers. In a cross-flow type cooling tower, at least one filler plate is provided at an arbitrary interval among a large number of filler plates in the uppermost stage of the filler unit.
A cooling tower characterized in that air-only passages are formed between spaced filling materials from the suction side to the discharge side. 2) The cooling tower according to claim 1, wherein the ceiling portion of the air-only passage is formed by blocking adjacent filler plates with a sprinkler shield. 3) The cooling tower according to claim 1, wherein the air-only passage is formed by bringing the upper edges of adjacent filler plates into watertight contact with each other. 4) Claim 2, characterized in that at least some of the several hat boards in claim 2 are openable and closable.
Cooling tower as described in section.