JP2780009B2 - Vapor diffusion spray type humidification method and humidifier - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a humidifying method and a humidifying device used for an air conditioner and the like, and more particularly to a humidifying method and a humidifying device of a vapor diffusion spray type.

[0002]

2. Description of the Related Art A plurality of spray pipes, each having a closed end and having a plurality of spray ports, are connected and connected in parallel to a main pipe receiving a steam supply. A humidifying method and a humidifying device of a vapor diffusion spray type for spraying are known.
No. 3).

[0003]

In a steam humidifier, the steam quickly melts into the air stream, and it seems that ideal humidification can be performed. It is often seen that dew has condensed on water and Juan. This condensation and condensation of the steam causes rust in ducts, fans and other parts, not only shortening the service life of parts, but also causing propagation of bacteria, mold and the like, which is extremely undesirable. On the other hand, recent air conditioners have been miniaturized, and in a humidifier provided in the miniaturized air conditioner, sufficient evaporation of steam is desired over a very short distance after steam spraying. Without the above, there is also a problem that the above-mentioned problem of preventing rusting and bacterial propagation cannot be solved.

From the above viewpoint, when observing the above-mentioned known humidifier, the steam is diffused and sprayed into the duct from the spray ports arranged substantially evenly in the duct, and the steam is evaporated quickly to improve the efficiency. Humidification is thought to be obtained,
In this known invention, the fact that the spray port is directed to the rear of the airflow and that the airflow flows in a state close to laminar flow allows the steam blown out from the spray port to flow rather than evaporate into the airflow. Since the steam is cooled faster and the steam is condensed, it is necessary to provide a further evaporation diffusion distance necessary for the once-condensed steam to evaporate into the gas stream, and there is a problem that efficient evaporation cannot be obtained.

[0005] In the above-mentioned known humidifier, the supply steam pressure may increase at the closed end of the main pipe and the spray pipe, and as a result, the amount of steam sprayed from the closed end may increase. In some cases, and vice versa, there is a problem that uniform steam cannot be supplied into the duct.

The present invention has been made in view of the above-mentioned problems of the known arts, and provides uniform steam supply to a humidifying space, shortens the diffusion distance and evaporation distance of steam, and obtains efficient humidification. The purpose is to prevent dew condensation and condensation of steam as much as possible, to eliminate adverse effects on air conditioners, and to make it sanitary.Also, to prevent drain water from mixing into spray steam as much as possible, With the aim of obtaining efficient humidification by allowing only steam to be sprayed,
It is another object of the present invention to make the pressure of the steam supplied to each spray pipe substantially uniform so that the steam can be uniformly supplied to the humidifying space.

[0007]

In order to achieve the above-mentioned object, in the vapor diffusion spray type humidification method of the present invention, each of a plurality of pipes is provided between an upper main pipe having a steam supply port and a lower main pipe having a drain discharge port. A plurality of spray pipes having spray ports are arranged in parallel, the upper main pipe, the lower main pipe, and the spray pipe are communicated with each other so that the steam from the steam supply port can be circulated. The steam is sprayed from each spray port by disposing the mouth on the windward side of the air flow. It is more effective to generate a vortex on the downstream side of each of the above-mentioned spray pipes and to diffuse the steam by the vortex.

In order to achieve the above object, a vapor diffusion spray type humidifier according to the present invention has a plurality of spray ports each having a plurality of spray ports between an upper main pipe having a steam supply port and a lower main pipe having a drain discharge port. Are arranged in parallel, the upper main pipe, the lower main pipe, and the spray pipe are communicated with each other, and the plurality of spray ports of the plurality of spray pipes are arranged on the windward side of the airflow to spray steam from each spray port. It is arranged to do. It is effective that the spray port is directed toward the windward side from the direction perpendicular to the windward side, and is further directed so as to spray obliquely with respect to the windward side.

It is preferable that a drain pipe is disposed between the upper main pipe and the lower main pipe, and the upper end of each of the spray pipes projects above the bottom plate of the upper main pipe. Further, the distance between the projecting upper end of each of the spray tubes and the top plate of the upper main tube may be set to a small dimension. Further, it is preferable that each spray port formed in each spray pipe has a cylindrical projection directed inward of the spray port. And a steam supply pipe is built in the upper main pipe,
A steam distribution port may be formed in the steam supply pipe. Further, it is effective if each of the spray tubes is a polygonal pipe. Furthermore, each of the spray tubes may be a round pipe, and a diffusion plate may be provided on the downstream side with respect to the air flow. And
It is more effective if the spray ports are arranged in a zigzag.

[0010]

According to the vapor diffusion spray type humidification method and the humidifier of the present invention, the supplied steam circulates through the upper main pipe, the lower main pipe, and the spray pipe to spray uniformly from each spray port and also to the windward side of the airflow. , And is uniformly sprayed to the airflow cross section in the duct. Then, when a vortex is generated on the downstream side of the spray pipe, the steam is further diffused and averaged, and the mixing speed with the gas stream is increased, the evaporation and absorption are performed immediately, and the steam absorption distance is reduced to a conventionally known device. This makes it possible to shorten the time to 1/2 to 1/4. Further, since steam is supplied from a plurality of spray ports, the amount of steam discharged per spray port is reduced, which also shortens the diffusion distance and evaporation distance of the steam, and makes the evaporation and absorption of the steam faster. .

In the case where the above-mentioned spray port is arranged so as to be directed toward the windward side from the direction perpendicular to the windward and to be sprayed obliquely with respect to the windward, The airflow of the vapor promotes the spray-diffusion effect of the vapor. In addition, a drain pipe is disposed between the upper main pipe and the lower main pipe, and the upper end of each of the spray pipes is projected above the bottom plate of the upper main pipe, so that drain water is prevented from flowing into the spray pipe, and The tube is supplied with steam only. And each spray port formed in each spray pipe has a cylindrical projection toward the inside of the spray port, so that the drain water generated in the spray pipe is not blown out from the spray port, and the steam Just blow out.

Further, if the distance between the projecting upper end of each of the spray pipes and the top plate of the upper main pipe is made a small dimension, it becomes difficult for steam to enter each of the spray pipes, and the resistance at the inlet of each of the spray pipes due to the resistance. Since the steam pressure becomes uniform, the amount of steam supplied to each spray pipe becomes uniform. Further, even in the case where a steam supply pipe is built in the upper main pipe and a steam distribution port is formed in the steam supply pipe, the supply of steam to each spray pipe is likely to be uniform.

[0013] Since each of the spray pipes is a polygonal pipe, or each of the spray pipes is a round pipe and a diffusion plate is provided on the downstream side of the air flow, a vortex is generated immediately after the spray pipe, Vapor diffusion is promoted. Further, when the spray ports are arranged in a zigzag manner, the vapor does not collide behind the spray ports and the dispersion and diffusion effect is promoted.

[0014]

An embodiment will be described with reference to the drawings. In the figure, reference numeral 11 denotes an upper main pipe, which has a steam supply port 12, and has a closed structure except for a connection port of the steam supply port and a spray pipe described later. Although the position and the direction of the steam supply port are not particularly limited, the supply of the steam from the direction of the air flow with respect to the duct section as shown in FIG. Due to the position occupied in the inside, the occurrence of dead space can be prevented, which is effective. In the illustrated embodiment, the upper main pipe 11 is formed of a square pipe and has both ends closed, but the upper main pipe may be other than the square pipe. Further, in the figure, reference numeral 15 denotes a lower main pipe, which has a closed structure except for a connection port of a spray pipe and a drain discharge port which will be described later, similarly to the upper main pipe. Similarly, in the illustrated embodiment, the lower main pipe 15 is formed of a square pipe and has both ends closed, but the lower main pipe may have another shape instead of the square pipe.

In the figure, 13 and 13 are an upper main pipe 11 and a lower main pipe 1
A plurality of spray tubes are provided in parallel with each other between the five spray tubes, and six spray tubes are provided in the illustrated embodiment. The upper main pipe 11 and the lower main pipe 15 are sprayed by the spray pipe 13.
There is communication between them. Further, a plurality of spray ports 14, 14 are opened in each spray pipe 13, and these spray ports 14, 14 are provided.
14 is arranged toward the windward side of the airflow. In the illustrated embodiment, the spray ports 14, 14 are provided one by one at the same height, but it is effective to arrange them in a zigzag manner between the spray pipes and the spray pipes.

In the vapor diffusion spray type humidification method according to the present invention, steam is supplied to the steam supply port 12 of the upper main pipe 11, and steam is supplied between the upper main pipe 11, each spray pipe 13 and the lower main pipe 15. Then, the steam is sprayed from the respective spray ports 14 of each spray pipe 13 toward the windward of the airflow. By spraying the steam toward the windward side, a small amount of steam is ejected and diffused widely and uniformly in the duct cross section from the spray port, so that faster evaporation can be obtained. At this time, the generation of a vortex downstream of the spray pipe 13 further promotes the diffusion of steam.

In the embodiment shown in FIGS. 1 to 7, the spray pipe 13 is constituted by a square pipe, and the square pipe is arranged so that the corners thereof face the windward. To 45 degrees. And the spray port 14, on the surface inclined at 45 degrees to this windward,
14 are open. That is, the spray port is directed toward the windward side from the direction perpendicular to the windward side, and is further directed so as to spray obliquely with respect to the windward side. In the illustrated embodiment, the spray port 14 is directed at an angle of 45 degrees with respect to the windward, but the direction of the spray port 14 may be in the range of 0 to 90 degrees with respect to the windward. .

Between the upper main pipe 11 and the lower main pipe 15,
In addition to the spray pipe 13, a drain pipe 16 is connected and connected, and the drain generated in the upper main pipe 11 is guided to the lower main pipe 15 so as to be discharged from a drain outlet 17 provided in the lower main pipe 15. The upper end 18 of each of the spray pipes 13 projects above the bottom plate 19 of the upper main pipe 11, thereby preventing the drain generated in the upper main pipe 11 from flowing into the spray pipe 13. In addition, each spray nozzle 14, the cylindrical collision part 20 towards the inside of the spray tube 13 as shown in FIG. 7
The cylindrical projection 20 prevents the drain generated in the spray pipe 13 from blowing out from the spray port 14. Further, in the embodiment shown in FIG. 4, the distance between the projecting upper end 18 of the spray pipe 13 and the top plate 21 of the upper main pipe 11 is made small, so that it is difficult for steam to enter the spray pipe 13 from the upper main pipe 11. Thus, the steam pressure entering each spray pipe 13 is made uniform.

FIGS. 5 and 6 show an embodiment in which a steam supply pipe 22 is incorporated in the upper main pipe, and a plurality of steam distribution ports 24, 24 are opened in the steam supply pipe 22.
In FIGS. 5 and 6, portions denoted by the same reference numerals as those in FIGS. 1 to 4 are the same portions. In this embodiment, a plurality of steam dispersion ports 24 provided in a built-in steam supply pipe 22 are provided.
Since the steam is supplied from the upper main pipe 11, the steam becomes substantially uniform in the upper main pipe 11, and the steam supply to each spray pipe 13 can be made more uniform.

FIGS. 1 to 7 show a configuration in which the spray pipe 13 is formed by a square pipe. In the case where the spray pipe 13 is formed by this rectangular pipe, a vortex can be generated immediately after the spray pipe 13 due to the shape thereof, and further diffusion of steam is preferably generated. FIG. 8 shows the spray tube 1
3 is constituted by a round pipe. If only the round pipe is used, a vortex is unlikely to be generated immediately after the spray pipe. Therefore, in the embodiment shown in FIG. 8, a diffusion plate 23 is provided at the rear position to easily generate the vortex. . The diffusion plate 23 preferably has heat conductivity. That is, since the diffusing plate is disposed immediately after the spray port, the temperature is substantially the same as the vapor temperature, so that the vapor is not condensed on the diffusing plate, but rapidly diffuses with the air by the subsequent vortex. , Agitation occurs, and very fast evaporation and absorption occurs.

FIG. 9 shows, as an example, the distribution of the amount of steam blown out by the conventional apparatus and the apparatus of the present invention in comparison. That is, FIG. A schematically shows a conventional apparatus, and FIG. B schematically shows the apparatus of the present invention, and the distribution state of steam is shown thereon. And in each figure, the steam supply position is indicated by an arrow. As can be understood from this explanatory diagram, to give an example, in the case of the conventional device, since the supply steam pressure at the tip of the closed spray pipe becomes high, the distribution of the steam spray amount is biased as shown in the figure. It is understood that, in the apparatus of the present invention, since the steam is supplied in a circulating manner, the steam is distributed on average as shown in the figure.

According to the above-described method and apparatus of the present invention, since the upper main pipe 11, the lower main pipe 15 and the spray pipe 13 are in communication, steam is supplied as if circulating, and
Blow out evenly. Since the spray from the spray port 14 is directed toward the windward of the airflow, the steam is diffused by the resistance of the airflow. In addition, since the vortex is generated immediately after the spray tube, the diffusion of the steam is further promoted.

Further, in the apparatus of the present invention, since the upper end of the spray pipe 13 is provided so as to protrude upward from the bottom plate 19 of the upper main pipe 11, the drain generated in the upper main pipe 11 does not flow into the spray pipe 13. The steam is sprayed only from the spray port 14, and the spray port 14 is provided with a cylindrical projection 20 that protrudes inward, so that the drain can be further reduced.
Only the steam is sprayed without being blown out of the nozzle.

In the case where the distance between the projecting upper end 18 of the spray pipe 13 and the top plate 21 of the upper main pipe 11 is small, the steam pressure guided to each spray pipe 13 is averaged, and the average steam is further increased. Spraying is performed, and a steam supply pipe 22 is provided in the upper main pipe 11 in the same manner.
Also in the apparatus provided with, the steam supply to each spray pipe 13 is averaged, and the steam distribution is made uniform.

[0025]

According to the method and the apparatus of the present invention, uniform steam can be supplied to the humidifying space, whereby the diffusion distance and the evaporation distance of the steam downstream of the apparatus can be shortened, and the efficiency is improved. It has a great effect that humidification can be obtained. In addition, dew condensation and vapor condensation in the humidified space can be prevented, and there is no adverse effect on each part of the air conditioner. Also, it is possible to prevent drain water from being mixed into the spray steam as much as possible, so that only the steam is blown out from the spray port, and more efficient humidification is obtained,
Further, the vapor pressure supplied to each spray pipe is averaged, which also has the effect of making the vapor supply uniform. Furthermore, the humidification space of air conditioners, ducts, etc. can be reduced by shortening the vapor diffusion and evaporation distance, and it can be incorporated into a small space. In addition, there is also an economic effect of extending the life of each component in the air conditioner.

[Brief description of the drawings]

FIG. 1 is a partially cutaway overall perspective view of a vapor diffusion spray type humidifier of the present invention.

FIG. 2 is a partially cutaway front view of the same.

FIG. 3 is a sectional view taken along line AA in FIG. 2;

FIG. 4 is a sectional view similar to FIG. 3, showing another embodiment.

FIG. 5 is a partially cutaway front view of another embodiment.

FIG. 6 is a sectional view taken along line BB in FIG. 5;

FIG. 7 is a sectional view of a spray port portion of a preferred spray tube.

FIG. 8 is a cross-sectional view of a spray port portion of another spray tube embodiment.

FIG. 9 is an explanatory view showing an example of a steam amount distribution state of a basic conventional apparatus and the apparatus of the present invention.

[Description of sign]

 DESCRIPTION OF SYMBOLS 11 Upper main pipe 12 Steam supply port 13 Spray pipe 14 Spray port 15 Lower main pipe 16 Drain pipe 17 Drain discharge port 18 Upper end of spray pipe 19 Bottom plate 20 Cylindrical projection 21 Top plate 22 Steam supply pipe 23 Diffusion plate 24 Steam dispersion port

Claims (11)

(57) [Claims] 1. A plurality of spray pipes each having a plurality of spray ports are arranged in parallel between an upper main pipe having a steam supply port and a lower main pipe having a drain discharge port. And the spray pipes are communicated with each other so that the steam from the steam supply port can be circulated, and the plurality of spray ports of the plurality of spray pipes are arranged on the windward side of the airflow to spray the steam from each spray port. Vapor diffusion spray humidification method. 2. The vapor diffusion spray type humidification method according to claim 1, wherein a vortex is generated downstream of each of the spray pipes, and the steam is diffused by the vortex. 3. A plurality of spray pipes each having a plurality of spray ports are arranged in parallel between an upper main pipe having a steam supply port and a lower main pipe having a drain discharge port. And a vapor diffusion spray type humidifying device, wherein a plurality of spray ports of the plurality of spray pipes are arranged on the windward side of the airflow so as to spray steam from each spray port. . 4. The spray port according to claim 3, wherein the spray port is directed toward the windward from a direction perpendicular to the windward, and is further directed so as to spray in an oblique direction with respect to the windward.
4. A vapor diffusion spray type humidifier according to item 1. 5. The vapor diffusion spray according to claim 3, wherein a drain pipe is disposed between the upper main pipe and the lower main pipe, and an upper end of each of the spray pipes projects above a bottom plate of the upper main pipe. Type humidifier. 6. The vapor diffusion spray type humidifier according to claim 5, wherein a distance between a projecting upper end of each of the spray pipes and a top plate of the upper main pipe is set to a small dimension. 7. The vapor diffusion spray type humidifier according to claim 3, wherein each spray port formed in each spray pipe has a cylindrical projection directed inward of the spray port. 8. The steam diffusion spray type humidifier according to claim 3, wherein a steam supply pipe is built in the upper main pipe, and a steam distribution port is formed in the steam supply pipe. 9. The vapor diffusion spray type humidifier according to claim 3, wherein each of the spray pipes is a polygonal pipe. 10. The vapor diffusion spray type humidifier according to claim 3, wherein each of said spray pipes is a round pipe, and a diffusion plate is provided on a downstream side with respect to an air flow. 11. The vapor diffusion spray type humidifier according to claim 3, wherein each spray port formed in each spray pipe is arranged in a zigzag manner.