JPH0129430Y2 - - Google Patents

Description

[Detailed description of the invention] <Utilized technical field> This invention is applicable to cross-flow heat exchange towers, especially rainwater,
This invention relates to technology for preventing snow, hail, hail, etc. from getting mixed into refrigerant or heating medium.

<Prior art and its problems> Conventionally, devices for preventing rainwater from entering this type of cross-flow heat exchange tower have generally had an elbow-shaped duct installed above the exhaust port. When the duct faces upwind, rainwater etc. blow into the heat exchange tower through the exhaust port, increasing exhaust loss, and if there is an upright wall adjacent to this duct, this also poses a problem for exhaust.

Furthermore, if the refrigerant or heating medium is antifreeze,
The concentration of this antifreeze decreases due to rainwater entering,
The desired freezing effect cannot be achieved.

Such a phenomenon becomes more noticeable when the blower provided at the exhaust port stops operating.

<Means for solving the problem> This invention has been developed by arranging the liquid receiver inside the cooling tower body, that is, by disposing the liquid receiver inside the cooling tower body, from the upper water tank onto the filling material, orthogonally to the flow path of the refrigerant or heating medium. Outside air is introduced into the air chamber formed in the air chamber and exhausted from the upper exhaust port directly below the air chamber, heat is exchanged between the outside air and the refrigerant or heating medium, and the heat exchanged refrigerant or heating medium is sent to the lower part of the air chamber. In a cross-flow heat exchange tower that collects liquid in a lower water tank installed, a liquid receiving tray large enough to cover only the water surface of the lower water tank directly below this upper exhaust port is placed above this water surface. By using a cross-flow type heat exchange tower, which is characterized in that the stagnant liquid can be freely discharged to the outside of the refrigerant or heat medium system,
It is an object of the present invention to provide a cross-flow type heat exchange tower that solves the above-mentioned problems and reduces the mixing of rainwater and the like into a refrigerant or a heat medium.

Next, a typical embodiment of the present invention will be explained based on the drawings.

In FIG. 1, A is a cross-flow type heat exchange tower that sucks outside air from two directions. Upper water tanks 11 are installed above the heat exchange tower main body 12 on both left and right sides of the upper exhaust port 18, and directly below the upper water tanks 11. outside air intake 1
A corrugated filling plate 15, which is a type of filling material, is placed near 3.
is loaded, and an eliminator member (not shown) is provided on the secondary side of each filling plate 15, and outside air flows in from the outside air intake port 13, passes between the filling plates 15, passes through the eliminator member, and collects the air. Room 17
is formed in the center of the main body 12, and the upper exhaust port 18 is provided directly above the air chamber 17 for exhausting the air that has completed heat exchange with the refrigerant or heat medium to the outside. A blower 18a is installed inside the upper exhaust port 18. A lower water tank 19 is installed to collect the refrigerant or heat medium exchanged with outside air while flowing down the filling plate 15 at the lower part of the air chamber 17 and return it to a plant such as a refrigerator. The air chamber 17 may not be located at the center of the main body 12 but may be located off-center.

This type of heat exchange tower A is the same as the known one, and the heat exchange tower of the present invention further includes a liquid receiving tray 20 large enough to cover only the water surface of the lower water tank 19 directly below the upper exhaust port 18. A drain pipe 21 is disposed approximately horizontally on the water surface, and drains rainwater, snow, and melting liquid such as sleet and hail collected in the center of the receiving tray 20 to the lower water tank. It is connected to the center.

In the case where two or three upper exhaust ports 18 are arranged in parallel in the longitudinal direction of the main body 12, the water surface of the lower water tank 17 located directly below these exhaust ports 18 has a rectangular plane that is long in the longitudinal direction. It is covered by the said saucer 20 of.

If necessary, as shown in FIG.
8 is attached with an exhaust duct 22, but it goes without saying that a device without this exhaust duct 22 also falls within the technical scope of the present invention.

This exhaust duct 22 consists of a large number of rectangular plates 2
3 are adjacent to each other in a louver shape, the upper exhaust port 18 is covered with these plates 23, and a gap is formed between the adjacent plates 23 to allow exhaust air, each plate 23 is inclined in its width direction, and its lower edge is extended in the longitudinal direction. The drain gutter 24 is formed by arranging the plates 23 in the louver shape, with the lower edge of the drain gutter 24 located below the adjacent plate 23. One end is provided higher than the other end, each plate 23 is of a single-flow type as a whole, and one end of each drainage gutter 24 extends to the outside outside the upper exhaust port 18 (the third
(See Figure 4).

Other aspects of the shape and arrangement of the plate 23a include a circular upper exhaust port 18 as shown in FIGS. 5 and 6.
The plates 23a are arranged radially, and each plate 23a is formed in a wide-end shape with the outer end of each plate 23a widening at the end.

That is, each plate 2 is slightly lower toward the outer end of the plate 23a.
3a is inclined and partially overlaps the adjacent plate 23, and a large number of plates 23a are arranged in a circular shape in the circumferential direction of the upper exhaust port 18, and a gap is formed between each plate 23a to allow exhaust air. and the exhaust duct 22a
The outer ends of each plate 23a are located outside the upper exhaust port 18 (see FIG. 5).

<Operations and Effects> The functions and effects of the present invention configured as described above will be explained below.

Heat exchange between the refrigerant or heat medium and outside air in the cross-flow type heat exchange tower A of the present invention is carried out in the same manner as in conventional heat exchange towers of this type.

During operation and stop of the blower 18a, rainwater, snow, hailstones, etc. that enter the air chamber 17 through the upper exhaust port 18 fall and are collected in the tray 20, and after melting, the snow, hailstones, hailstones, etc. Since it is discharged outside the refrigerant or heat medium system path through the drain pipe 21 without mixing with the refrigerant or heat medium in the lower water tank 19, the concentration of the refrigerant or heat medium will not be diluted by rainwater, etc. In particular, when the refrigerant or heating medium is antifreeze, it is possible to prevent freezing accidents due to contamination with rainwater, etc., and it is ideal for heating towers of heating devices used in cold regions or in winter, for example.

Since the upper exhaust port 18 faces upward, there is no directionality in the exhaust port 18, and even if there is a standing wall that is taller than the exhaust port 18, there is no problem with the exhaust air, and the cooling tower A has the effect of preventing rainwater from entering. can be freely installed without being affected by the surrounding environment.

Since the saucer 20 covers only the water surface of the lower water tank 19 directly below the upper exhaust port 18, the filler 1
The refrigerant or heat medium that has flowed down through the lower water tank 19 can be flowed and collected in the lower water tank 19 as before without any hindrance.
Can be recycled and used.

The effects of the embodiment will be explained next.

Even in a heat exchange tower having a large number of upper exhaust ports 18 arranged in parallel, the water surface of the lower water tank 19 directly below all the exhaust ports 18 is covered by a single tray 21 having a rectangular planar shape. Even in the case where the blower 18a provided at one exhaust port 18 is stopped and the blower 18a of the other exhaust port 18 is operated, rainwater and the like can be appropriately received in the tray 20 and prevented from mixing with the refrigerant or heat medium.

The upper exhaust port 1 is provided with the receiving tray 20 and the upper exhaust port 1.
In the embodiment in which the exhaust duct 22 is connected to the exhaust duct 22 at the plate 23 (see FIGS.
3a) and collected in the drainage gutter 24, the plate 23 (=2
3a) moves toward one end (outer end), is discharged to the outside outside the upper exhaust port 18, hardly falls into the cooling tower main body 12 from the upper exhaust port 18, and the receiving tray 2
The amount of rainwater etc. falling onto the air chamber 17 can be significantly reduced, and even if a small amount of rainwater etc. enters the air chamber 17 through the gap between the adjacent plates 23 due to the outside wind, it can be received by the receiving tray 20. Therefore, it is possible to almost completely prevent rainwater or the like from mixing with the refrigerant or heat medium without increasing the capacity of the tray 20, and the tray 20 can be made smaller.

[Brief explanation of drawings]

The figures relate to this invention; FIG. 1 is a schematic diagram of a typical embodiment of this invention, FIG. 2 is a schematic diagram showing an embodiment in which an exhaust duct is incorporated into the one in FIG. Figure 3 is a cutaway perspective view of the duct part in Figure 2;
FIG. 4 is a perspective view of the plate, FIG. 5 is a half-sectional view of another embodiment of the exhaust duct, FIG. 6 is a partially cutaway plan view of the exhaust duct of FIG. 5, and FIG. , is a schematic diagram of a conventional elbow-type ducted cross-flow heat exchange tower. Explanation of main symbols in the diagram, 17...air chamber, 18...
Upper exhaust port, 19...lower water tank, 20...rainwater tray.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. Sprinkling refrigerant or heating medium onto the filling material from the upper water tank, and directing outside air into the air chamber formed inside the main body orthogonally to the flow path of the refrigerant or heating medium. Exhaust air from the upper exhaust port directly above the chamber.
In a cross-flow heat exchange tower that exchanges heat between this outside air and a refrigerant or heat medium, and collects the heat-exchanged refrigerant or heat medium in a lower water tank installed at the bottom of the air chamber, the lower part directly below this upper exhaust port is used. A liquid receiving tray large enough to cover only the water surface of the water tank is placed above the water surface, and the liquid stagnant in this receiving tray can be freely discharged to the outside of the refrigerant or heat medium system path. AC heat exchange tower. 2. The cross-flow heat exchange tower according to claim 1, wherein the refrigerant or heating medium is an antifreeze liquid. 3. The cross-flow type heat exchange tower according to claim 1 or 2, wherein a large number of upper exhaust ports are arranged in parallel in the longitudinal direction.