JP4282033B2 - Spray and air mixing promotion device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
INDUSTRIAL APPLICABILITY The present invention is used in an air conditioner used in a general building when the humidity is adjusted by humidifying air by a water jet method.
[0002]
[Prior art]
The water injection type humidifier is advantageous in that it does not require a steam generator and requires low power, but has a disadvantage that the spray diffusion range is narrow and it is difficult to mix with air. Conventionally, as a spraying means for spraying, as a sprayer for an industrial process, for example, as shown in Japanese Utility Model Laid-Open No. 4-134452, there are provided air nozzles for spraying on both sides of spraying sprayed from a nozzle. It is known that the spray is expanded flat by air ejected from an air nozzle. However, in this conventional apparatus, the spray diffusion width and the reach distance are not so large, and the capacity is insufficient for humidification in a large scale facility. In comparison, humidifiers used in factories, residential areas, and the like are required to uniformly disperse moisture in a large amount of air flow to be supplied.
[0003]
[Problems to be solved by the invention]
This invention makes it a subject to increase the diffusion range of humidified air while increasing a humidification capability in a water injection system.
[0004]
[Means for Solving the Problems]
Means for solving the above-mentioned problem is that, as described in claim 1, a plurality of air discharge pipes provided with an air nozzle at the tip are arranged around the spray nozzle, and each air nozzle is centered on the spray nozzle. A spiral angle is formed with respect to the spray from the spray nozzle without directing in the spray direction and substantially in the tangential direction on the circle, and the spray from the spray nozzle and the air flow from each air nozzle are spiral. It is characterized by generating a swirling humidified airflow that is mixed with ambient air while being flowed into the air and diffused . According to this means, the fog water droplets ejected from the spray nozzle are mixed while spirally swirling with the air coming out of the air nozzle of the air discharge pipe and diffused widely as a swirling humidified airflow.
[0005]
According to another aspect of the present invention, in the first aspect, the air chamber to which air is supplied is provided behind the spray nozzle, and the air discharge pipe is branched from the front surface of the air chamber. It is characterized by that. According to this means, a large number of air discharge pipes can be easily provided, and the mixing can be promoted by increasing the chance of the mist water droplets coming into contact with the air to be humidified.
Furthermore, as described in claim 3, the other means is that in claim 1 or 2, the spray nozzle is supplied with water from a water pipe and is supplied with compressed air from a compressed air pipe, and the air nozzle is 20 to 100 mmHg of air is supplied from the air supply pipe.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a state in which a swirling humidified airflow generated by the method of the present invention is diffused. In FIG. 1, reference numeral 1 is an apparatus for promoting mixing of spray and air, 2 is a spray nozzle in the apparatus 1 for generating spray, 3 Is a water pipe for supplying water to the spray nozzle 2, and 4 is a compressed air pipe for supplying compressed air of about 3 atm for atomization. A ring-shaped air chamber is installed behind the spray nozzle 2 concentrically with the center line O of the nozzle 2 and is supplied with air having a pressure of about 20 to 100 mmHg from the air supply pipe 5a. Six air discharge pipes 6 project from the front surface of the air chamber 5, and the air discharged from the air nozzle 7 at the tip of the air discharge pipe 6 is spirally released. Therefore, the spray S ₁ emitted from the spray nozzle 2 flows in a spiral manner mixed with the air flow emitted from each air nozzle 7 and the ambient air attracted by the air flow, and the swirling humidified air flow S ₂ having a low concentration Become. The air chamber 5 is attached to an appropriate structure 8 in the air-conditioned room.
[0007]
2 (a) and 2 (b) are detailed views of the mixing accelerating device 1. A water passage 2b and an air passage 2c are formed concentrically inside the nozzle hole 2a, and water and air are mixed inside the nozzle hole 2a. It is discharged as spray S ₁ . Also, six air discharge pipes 6 are attached to the front surface 5b of the air chamber 5 at equal angular intervals. The air discharge pipe 6 is made of a flexible pipe capable of maintaining a curved shape or a rigid pipe formed in a predetermined curved shape in advance, and a tapered air nozzle 7 is provided at the tip.
[0008]
Air nozzle 7, as shown in FIG. 2 (a) in a direction substantially tangential, and side view on a circle around the atomizing nozzle 2 in a front view as shown by the arrow A ₁ in FIG. 2 (b) The air exiting from the air nozzles 7 interferes with each other and flows as a spiral swirl flow. The air nozzle 7 is formed in a tapered shape like a conical nozzle 7a or a cross-shaped nozzle 7b shown in FIG.
[0009]
The water pipe 3 and the compressed air pipe 4 are attached to the air chamber 5 by a fixture 9, where 9 a is a clamp for fixing the water pipe 3 and the compressed air tube 4 to the screw 9 b, and 9 c is the air chamber 5. A bracket 9d is a lock nut, and the clamp 9a and the lock nut 9d are adjusted to fix the spray nozzle 2 in an appropriate position.
[0010]
With the above configuration, the spray S ₁ is ejected from the spray nozzle 2 in the direction of the center line O, and the high-speed air flow A ₁ is obliquely ejected from each air nozzle 7 in the turning direction. Each high-speed air flow A ₁ acts to form a spiral swirl flow as a whole, and is attracted to the high-speed air flow A ₁ to generate induced air flows A ₂ and A ₃ that flow together. As a result, the spray S ₁ joins and stirs with the airflows A ₁ , A ₂ , A _3, and flows while increasing the diffusion width as a swirling humidified airflow S ₂ with a low concentration while the water droplets of the mist are refined. Therefore, a wide range of air is humidified. At this time, the difference in speed between the mist and the air to be humidified is increased by the swirl flow, and stirring, mixing, and diffusion are promoted.
[0011]
In the above embodiment, six air discharge pipes 6 are provided. However, the number of the air discharge pipes 6 is not limited to this, and a plurality of air discharge pipes 6 may be used, and a swirl flow is easily formed. What is necessary is just to select the number which is easy to do. Further, without using the air discharge pipe, a blow-out opening that opens in a ring shape is projected on the front surface of the air chamber 5, and a large number of circumferentially inclined guide plates are provided in the blow-out opening. A swirling flow may be generated.
[0012]
Next, FIG. 3 shows a structure in which the air chamber 5 is replaced with the ring-shaped member, and a cylindrical portion 5b and a tapered portion 5c are integrated, and a bellows pipe 5d is connected to the tapered portion 5c as an air supply pipe. . This apparatus can arbitrarily change the delivery direction of the spray by bending the bellows tube 5d.
[0013]
From the above description, it is clear that the mixing promotion device 1 has a larger diffusion range than a conventional spray nozzle, but the diffusion range can be further expanded by combining the device 1 and a blower. FIG. 4 shows a simple comparison between the spray nozzle and the mixing promoting device, in which (a) shows the spray S ₁ by the conventional spray nozzle N, and (b) shows the swirling humidified airflow generated by the device 1. S ₂ is indicated. The spray S ₁ flows at a small opening angle immediately after being jetted and therefore does not proceed with diffusion and mixing unless jetted for a long distance. On the other hand, the mixing promoting device 1 of the present invention positively adds the air flow from the air nozzle 7 as a swirling flow, so that diffusion and mixing are sufficiently performed with a short-distance jet as shown in FIG. 4 (b). The swirling humidified air flow S ₂ is generated.
[0014]
5, spray S ₁ by combining the blower as described above, it shows a case in which applying a head wind shaped airflow W humidified air flow S _2, sprayed S ₁ in FIG. 5 (a), reversed a stream W However, in the mixing promoting device 1 shown in FIG. 5 (b), the diffusion action is promoted by the synergistic effect of the air flow W and the swirling flow, and it is sufficiently miniaturized with a short diffusion distance. Is done.
[0015]
FIG. 6 shows a state in which a right-angle air flow W is applied to the spray S ₁ and the swirling humidified air flow S _2, and the diffusion of the spray S ₁ in FIG. 6A is as small as that in FIG. 5A. However, in FIG. 6B, the humidified airflow S ₂ is diffused over a wide range at a short distance by the airflow W, as in FIG. 5B.
[0016]
The mixing promoting device 1 can be installed in a factory having a large space, a living area, etc., but by being downsized, it can be installed in an air conditioning / ventilation duct or in an air conditioner. It is also suitable for installation in an underfloor chamber.
[0017]
【The invention's effect】
According to the means of claim 1, the mist from the spray nozzle is agitated in the immediate vicinity of the spray nozzle by the spirally flowing air flow coming out of the air nozzle and the air flow attracted thereby, and the vortex of the airflow grows By doing so, stirring and mixing are performed in a small area for a short time, and a swirling humidified airflow is generated. Therefore, there is an effect that air can be humidified over a wide range. According to the second aspect of the present invention, since a large number of air discharge pipes and air nozzles can be installed concentrically in any direction for one spray nozzle, a large amount of humidified air can be easily generated. is there.
[Brief description of the drawings]
FIG. 1 is a perspective view of an embodiment of the present invention. FIG. 2 is a detailed view of the same part. FIG. 3 is a perspective view of another embodiment. FIG. Fig. 6 Comparison diagram when the airflow is applied [Fig. 6] Comparison diagram when the cross airflow is applied [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Mixing promotion apparatus 2 Spray nozzle 3 Water pipe 4 Compressed air pipe 5 Air chamber 6 Air discharge pipe 7 Air nozzle S ₁ Spray 9 ₂ Swirling humidification airflow

Claims (3)

Around the spray nozzle, a plurality of air discharge pipes provided with air nozzles at the tip are arranged , and each air nozzle is directed in a substantially tangential direction on a circle centering on the spray nozzle and without being directed to the spray direction. the helix angle is formed relative to the spray from the spray nozzle, generating a spray and swirl humidified airflow diffused and mixed with ambient air while the air flow exiting from the air nozzle to flow spirally out from the spray nozzle An apparatus for promoting the mixing of spray and air.   2. The spray / air mixing promoting device according to claim 1, wherein an air chamber to which air is supplied is provided behind the spray nozzle, and the air discharge pipe is branched from the front surface of the air chamber. 3. The spray nozzle according to claim 1, wherein the spray nozzle is supplied with water from a water pipe and is supplied with compressed air from a compressed air pipe, and the air nozzle is supplied with air of 20 to 100 mmHg from an air supply pipe. A device for promoting the mixing of spray and air.

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