JPH02233166A - Spray apparatus - Google Patents

Abstract

PURPOSE:To prevent the wetting of a floor by eliminating the flocculation and growing of liquid droplets by preventing the collision of sprayed liquid droplets with a curved wall by providing an opening injecting air between the curved wall and the jet stream layer of the sprayed liquid droplets. CONSTITUTION:A back surface opening 20 and a side surface opening 22 are formed to an air duct 10 on this side of the curved wall 10A of said duct 10 and the air sent from an air feed fan 16 is blown out between the jet stream layer A of the sprayed liquid droplets from a spray nozzle 24 and the curved wall 10A from the back surface opening 20. Therefore, the sprayed liquid droplets from the spray nozzle 24 are prevented from directly colliding with the curved wall 10A and the side wall of the duct and directionally turned without generating the flocculation and growing of the liquid droplets. The sonic wave generated from the nozzle 24 collides with the curved wall 11A to be arrested. Therefore, the wetting of a floor due to the flocculation and growing of the liquid droplets injected into an air conditioning chamber is eliminated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a spray device, and more particularly to a spray gastomer that changes the direction of spray droplets ejected from a spray nozzle.

[Prior art]

A spray nozzle is used to spray a liquid into a space such as a room. In order to make the spray droplets finer, it is necessary to supply a high-pressure liquid (or bubbles) with increased atomization energy to the spray nozzle. However, if the pressure of the liquid or bubbles is increased, the noise generated by the sprayed liquid from the spray nozzle will inevitably become louder, causing noise. Therefore, as a means to reduce such generated noise, it has been considered to bend the direction in which the sound travels, and it has been considered to provide a bent pipe or the like at the outlet.

FIG. 9 is an explanatory diagram of a conventional spray device for the purpose of silencing a spray nozzle. As shown in FIG. 9, the spray nozzle 71 sprays the gas-liquid mixture from the liquid pipe 73 and the air pipe 75, and the liquid is discharged forward in the form of spray droplets. A muffling tube 77 is provided around the spray nozzle 71, and a curved plate 79 is placed in front of the muffling tube 77. The spray direction of the spray droplets blown forward is changed. and,
Similarly, the sound waves generated from the spray nozzle 71 are transmitted to the curved plate 7.
It collides with 9 and is muted. This prevents noise in the space or room where the spray is being sprayed.

[Problem to be solved by the invention]

However, although the curved plate 79 has a noise-absorbing effect, the sprayed droplets collide with the curved plate 79 due to inertia and become coarse, so that the coarsened droplets are ejected into the space, causing damage to the objects and objects.
There is a problem with the product falling onto the floor and getting wet.

In order to solve this problem, conventionally, the droplets sprayed by a spray nozzle are mixed with a large amount of air before reaching the curved plate, and the atomized air is sent to the curved plate and supplied to the desired space. There is. However, the amount of air supplied to atomize such atomized droplets is large, and there is a problem in that the equipment space and cost are considerable.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a spray device that can emit spray droplets without agglomerating or coarsening them even when changing the direction of spray droplets. The purpose is

[Means to solve the problem]

In order to achieve the above object, the present invention provides a spray device in which the direction of spray droplets is changed by a curved wall disposed in front of a spray nozzle, in which there is a gap between the curved wall and an ejected flow layer of spray droplets. It is characterized by having an opening for blowing out air.

[Effect]

According to the spray device according to the present invention, air is blown out from the opening between the curved wall and the jet flow layer of the spray droplets. Therefore, the spray droplets are prevented from colliding with the curved wall, and the spray droplets do not aggregate or become coarse. Therefore, the ejection direction of the spray droplets can be changed without causing the spray droplets to aggregate or become coarse.

〔Example〕

Preferred embodiments of the spray device according to the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is an explanatory diagram showing an embodiment of a spray device according to the present invention. The air 12 passes through the filter 14, is sucked into the fan 16, passes through the passage 18 formed on the back side, and passes through an opening (back opening) 20 and an opening (side opening) as shown in FIG.
It is blown out from 22, 22. The back opening 20 and the side openings 22, 22 are formed in front of the curved wall 10A of the air supply duct 10, and the air from the back opening 20 flows into the jet flow layer A of the spray droplets from the spray nozzle 24 and the curved wall 9 1 Q. It is blown out between A and A.

An air pipe 26 and a liquid pipe 28 are connected to the spray/spool 24 in the air supply duct 10, and the pipes 26, . The misted liquid is sprayed by the air and liquid from 28.

According to the spray device configured as described above, the spray nozzle 2
The spray droplets blown out from the curved wall 10A of the duct 10
The direction of the air is changed and the air is discharged into the air conditioning room 30. In this case, the air blown out from the back opening 20 and the side opening 22 forms an air current along the curved wall 10A, and also forms an air current along the side wall of the air duct 10. For this reason, the spray droplets blown out from the spray nozzle 24 are prevented from directly colliding with the curved wall 10A and the side wall by these airflow layers, and are changed direction and sprayed into the air conditioned room 30 without causing agglomeration or coarsening. be done.

On the other hand, the sound waves generated from the spray nozzle 24 are transmitted to the air supply duct 1.
It collides with the curvature "J 1 0 A" of 0 and is efficiently muffled. Therefore, noise in the air conditioned room 30 is prevented.

FIG. 3 is an explanatory diagram showing a second embodiment of the spray device according to the present invention. The spraying device shown in FIG. 3 has approximately the same appearance and configuration as the device of the first embodiment shown in FIG. 1, and the same components as those used in FIG. As shown in FIG. 3, the detailed explanation of which will be omitted, an external air intake port 31 is formed in the curved wall 10A of the air supply duct 10, and an air adjustment damper 33 is installed in the intake port 31.

Further, an external air intake port 35 is formed in the inner curved wall 10B of the air supply duct 10, and an air adjustment damper 37 is provided in the intake port 35. Furthermore, the rear opening 2 of the passage 18
0 is provided with an air adjustment valve 39, and an air knife nozzle 4 is provided on the wall of the passage 18 to adjust the air blowing angle.
1 and 41 are provided. Further, a part of the air blown from the fan 16 is blown through the opening 43 to the installation passage of the spray nozzle 24, and the amount of air blown is adjusted by the air volume adjusting dampers 45, 45 of the opening 43. Note that a drain pipe 47 for aggregated droplets is provided near the opening 43.

Hereinafter, before explaining the operation of the second embodiment according to the present invention,
The reason why some improvements were made to the configuration of the first embodiment will be explained.

In the spraying device of the first embodiment shown in FIG. 1, the speed at which air is blown out from the rear opening 20 etc. of the air supply duct 10 is set to approximately the same speed as the speed at which the spray droplets are blown out from the spray nozzle 24. . This is because if the air blowout from the back opening 20 is slow, it will not be possible to prevent the collision of the curved U 1 0 A of the spray droplets, and if the air blowout speed is fast, as shown in FIG. This is because, as shown, a reduced pressure state occurs in the blowout area F, and a vortex flow involving the ejected semen droplets of the jetted flow layer A is formed. In addition, if the air blowing speed from the back opening 20 etc. is not constant, the air supply duct 1 of the spray droplets may be
Blackening occurs in the blowing direction from 0.

Adjusting the speed only by the fan 16 may not be accurate because the filter 14 and the like are provided at the front stage.

Therefore, according to the spray device of the second embodiment configured as described above, when there is a possibility that a decompression-like jaw may be generated in the blow-off area F due to the blow-off of air from the back opening 20, the intake port 3
1, external air is introduced and the reduced pressure state in area F is eliminated. Further, the amount of external air introduced is adjusted by an adjustment damper 33.

This prevents the formation of vortices that entrain the spray droplets.

Also, due to the flow of spray droplets from the spray nozzle 24,
A vortex region G also occurs near the inner curved wall 10B of the air supply duct 10. However, by taking in external air from the intake port 35, the generation of this vortex region G is prevented. The amount of air blown from the front opening 20 is regulated by the air adjustment valve 39 and also by the air volume adjustment dampers 45, 45 of the opening 43, so that the air blown speed from the back opening 20 can be roughly adjusted.

Air knife nozzle 41, 41
The direction of spray droplets from the air supply duct 10 can be adjusted.

FIG. 4 is an explanatory view showing a third embodiment of the jet Fj device according to the present invention. As shown in FIG. 4, an air pipe 26 and a liquid pipe 28 are connected to the spray nozzle 24, as in the first embodiment shown in FIG. 1, to spray droplets forward. A cylindrical muffling tube 32 is provided around the spray nozzle 24 .

A curved plate 34 as a curved wall of the present invention for changing the direction of sprayed droplets is provided in front of the spray nozzle 24, and an air supply fan 36 is attached to the curved plate 34. or,
An air supply casing 38 is formed in the curved plate 34, and air is supplied from an air supply fan 36 to the air supply casing 38, and the air is blown out from an opening (blow outlet) 40.

The blown air flows along the inner peripheral wall of the curved plate 34.

Even in such a configuration, the air outlet 4 of the casing 38
The air blown from 0 forms an air flow layer on the inner circumferential wall of the curved plate 34, prevents the ejected semen droplets ejected from the spray nozzle 24 from colliding directly with the curved plate 34, and changes the direction of the atomized droplets. ing. Therefore, the direction of the spray droplets is changed without causing agglomeration or coarsening on the inner peripheral surface of the curved plate 34. On the other hand, the sound waves from the spray nozzle 24 collide with the curved plate 34 and are muffled.

FIG. 5 is an explanatory diagram showing a fourth embodiment of the spray device according to the present invention. As shown in FIG. 5, a casing 42 having a curved surface 42A as a curved wall of the present invention is provided at the front in the direction in which spray droplets are sprayed from the spray nozzle 24. An opening (air outlet) is provided at a predetermined position on the curved surface 42A.
44, 44, .

According to the spray device configured as described above, the air supply fan 4
The air from 6 passes through the casing 42 and reaches the outlet 44,
It is blown out from 44. The blown air forms an air flow layer on the curved surface 42A. On the other hand, the direction of the spray droplets blown out from the spray nozzle 24 is changed by this air flow layer and discharged into a predetermined space. Even in this case, since the sprayed droplets do not directly collide with the curved surface 42A, agglomeration or coarsening does not occur. On the other hand, the sound waves from the spray nozzle 24 efficiently collide with the casing 42 and are absorbed.

FIG. 6 is an explanatory diagram showing a fifth embodiment of the spray device according to the present invention. As shown in Figure 6, the spray device is connected to the air supply duct 4.
8, and the tip of the air supply duct 48 is formed into a curved pipe. Inside the air supply duct 48, a spray nozzle 24, an air pipe 26 connected to the spray nozzle 24, and a liquid pipe 28 are provided, and a silence cylinder 50 is arranged around the spray nozzle 24. The spray droplets from the spray nozzle 24 are ejected toward the curved surface 48A of the air supply duct 48, which serves as the curved wall of the present invention.

Further, an opening 5 of an air blowing nozzle 52 is provided in the air supply duct 48.
2 A is provided, and the air from the blow-off nozzle 52 is not blown out in the direction along the curved surface 48A, but is directly blown out toward the opening 54 of the air-supplying dust 48, blocking the flow of the ejected semen droplets.

According to the spray device according to the present invention configured as described above,
The air from the blow-off nozzle 52 is directly discharged toward the approximate center of the opening 54 of the air supply duct 48, and the sprayed droplets are prevented from colliding with the curved surface 48A of the air supply duct 48 by this air. On the other hand, near the curved surface 48A, the outside air flows backwards and flows along the curved surface 48A, as shown by the arrow in FIG. Therefore, when droplets adhere to the inner circumferential wall of the curved surface 48A due to a temperature difference between the inside and outside of the air duct 48 or other influences, the droplets flow down along the curved surface 48A.
The water is collected in a drain in a duct 48 (not shown). There is no possibility that the attached droplets will directly fall into the spray droplet layer A from the spray nozzle 24 and cause agglomeration or coarsening of the spray droplets.

FIG. 7 is an explanatory diagram of a sixth embodiment of the spray device according to the present invention. As shown in FIGS. 7 and 8, the ejaculation device is provided at the opening of the air supply duct 58.

Inside the air supply duct 58 are a spray nozzle 24 and a spray nozzle 2.
A sound deadening cylinder 60 that covers the periphery of 4 is provided.

The spray droplets from the spray nozzle 24 are ejected toward the inner circumferential wall of the curved back surface 58A, which is the curved wall of the present invention and is formed by bending the air supply duct 58. A passage 59 is formed on the back surface of the air supply duct 58, and air is blown out from an opening 59Δ of the passage 59 along the curved rear surface 58Δ.

On the other hand, a collar 66 is formed at the tip of the curved back surface 58A, that is, at the opening 64 of the air supply duct 58. For this reason, passage 5
The air blown out from the curved back surface 58A becomes an obstacle and cannot flow along the inner peripheral wall of the curved back surface 58A.
An air retention area C is formed on the inner circumferential wall of 8A.

According to the spray equipment according to the present invention configured as described above,
The air blown from the blowing passage 59 prevents the spray droplets from directly adhering to the curved back surface 58A. On the other hand, droplets and the like adhere to the inner circumferential wall of the curved back surface 58A of the air duct 58 due to the temperature or humidity difference between the inside of the air duct 58 and the air conditioned room. When these droplets adhere, the formation of the air retention area C causes the droplets to flow into the ejected flow layer A of the sprayed droplets together with the ejected air.
There is no risk of the water getting mixed in, and it flows along the curved back surface 58A to the drain or the like below. Therefore, in this case, there is no possibility that the droplets adhering to the curved back surface 58A will fall into the spray droplets as shown in FIG. 6.

〔Effect of the invention〕

As explained above, according to the spray device according to the present invention,
Since an opening for blowing out air is provided between the curved wall that changes the direction of the spray droplets and the ejected flow layer of the spray droplets, the spray droplets do not adhere to the curved wall and the spray droplets are prevented from adhering to the curved wall. Agglomeration or coarsening is prevented, and the direction of the sprayed droplets can be changed efficiently.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the spray device according to the present invention, and FIG.
A sectional view taken along line I-1 in the figure, FIG.
An explanatory diagram showing a second embodiment of the device, FIG. 4 is an explanatory diagram showing a third embodiment of the spray device according to the present invention, and FIG. 5 is an explanatory diagram showing a fourth embodiment of the spray device according to the present invention. , FIG. 6 is an explanatory diagram showing the fifth embodiment of the spray device according to the present invention, FIG. 7 is an explanatory diagram showing the sixth embodiment of the spray device according to the present invention, and FIG.
The figure is a front view of the opening of the air supply duct shown in FIG. 7, and FIG. 9 is an explanatory view of a conventional nebulized stomach. 10, 48, 58... Air supply duct, IOA... Curved wall, 20... Back opening, 22... Side opening, 24... Spray nozzle, 26... Air piping, 2
8...Liquid piping, 30...Air conditioning room, 31, 35
...Intake port, 33, 37...Air section danba,
34... Curved plate (curved wall), 36, 46.
・Air supply fan, 39...Air control valve, 40...Opening (outlet), 41...Air knife nozzle, 4
2...Casing, 42A, 48A...Curved surface (
curved wall), 44...opening (air outlet), 52...
・Blowout nozzle, 52A...opening, 54, 64
...Opening, 58A...Curved back (curved wall), 5
9A...opening, 66...tsuba.

Claims (2)

[Claims] (1) In a spray device in which the direction of spray droplets is changed by a curved wall arranged in front of a spray nozzle, an opening for blowing out air is provided between the curved wall and the ejected flow layer of spray droplets. A spray device featuring (2) The spray device according to claim (1), wherein an intake port for external air is formed in the curved wall.