JPH09159308A - Liquid sprayer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To uniformly spray liquid and accurately drip liquid drops over target places even if there is a little assembly error, by a method wherein a plate is corrugated like a folding screen and two or more holes are drilled in the sidewall near the ridge of the corrugation, an the upper part of the corrugated plate is surrounded by a plate to form a cylindrical shape. SOLUTION: A corrugated plate 1 and a plate 6 that are arranged horizontally form a bag-like pipe, and a number of small holes 3 are drilled at a high elevation on the sidewalls near the ridges of the corrugations at specified intervals. Liquid spouting from the small holes 3 strikes against the sidewalls near the ridges of the corrugations and flows down slowly, and drops down on to the specified positions, such as on heat transfer tubes, from the bottom edges of the grooves of the corrugations. Thereby, the liquid is prevented from striking against the heat transfer tubes and splashing after spouting from a sprayer. Therefore, the liquid can be uniformly sprayed over the accurate positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for uniformly distributing a liquid to a space or a portion where heat transfer or reaction takes place.

[0002]

2. Description of the Related Art A conventional liquid spraying device (hereinafter referred to as a spraying device) is disclosed, for example, in Japanese Utility Model Publication No. 53-52682, and the devices shown in FIGS. 5 and 6 are used. There is. 5 is a front view and FIG. 6 is a sectional view taken along the line VI-VI in FIG. In the figure, 21 is a gutter, 22 is a siphon board,
Reference numeral 23 is a coil spring, 24 is a metal plate, and 25 is a heat transfer tube. In this spraying device, a coil spring 23 is arranged below the gutter 1 in order to sandwich a plurality of siphon plates 22 on the side wall of the gutter 21 under the same conditions. It is designed to be pressed in the direction, and even if there is an individual difference in the flow path of the siphon plate 22 in the portion in contact with the inner surface of the side wall, it does not greatly affect the dropping ability.

Further, in Japanese Patent Laid-Open No. 51-51039, there is shown in FIG.
A spraying device as shown in FIG. 8 is disclosed. 7 is a front view and FIG. 8 is a sectional view taken along the line XIII-XIII in FIG. In the figure, 26 is a bag tube, 27 is a housing, 27A is a passage, 28 is an apron, and 30 is a small hole. Long bag 2
A large number of small holes 30 are formed on the top surface of 6 in the longitudinal direction at predetermined intervals. A housing 27 is fixed to the bag tube 26, and a space is formed in the upper part. As shown in FIG. 7, the housing has both ends cut out at regular intervals,
The passage 27A for the liquid to be sprayed is used. On the other hand, a roof-shaped apron 28 is attached to the lower surface of the bag tube 26. Now, the liquid that has flowed into the bag tube 26 is ejected from the small hole 30 into the space formed by the housing 27A, passes through the notch passage 27A, travels along the surface of the bag tube 26, and flows down the surface of the apron 28. The liquid is evenly dispersed on the heat pipe 25.

[0004]

The spraying device disclosed in Japanese Utility Model Publication No. 55-52682 has a large number of siphon plates 2.
2. It must be attached to the gutter 21 and requires a lot of man-hours for the assembly work. Moreover, the siphon board 2 to the gutter 21
When attaching 2, the liquid is not evenly distributed unless the clearance between the siphon plate 22 and the side wall of the gutter 21 is uniform, but it is extremely difficult to assemble the clearance uniformly. Further, even if the siphon plate 22 is completely assembled to the side wall of the gutter 21, if the spraying device is inclined, the spraying becomes uneven. Further, the spraying device disclosed in Japanese Patent Laid-Open No. 51-51039 has drawbacks that it is structurally complicated, difficult to assemble, takes up space, and is expensive.

An object of the present invention is that the structure is simple and easy to assemble, and even if there is some assembly error or deviation in mounting, the liquid spraying condition is always uniform and the liquid is accurately dripped at the intended place. Another object of the present invention is to provide a liquid sprinkling device that prevents clogging even if foreign matter enters the sprinkling device and does not make the spraying pattern non-uniform.

[0006]

In order to achieve the above object, the liquid spraying device of the present invention is (1) arranged horizontally and connected in series at a relatively high level in the vicinity of the apex of a bent portion in the longitudinal direction. A folding plate having a plurality of through holes provided, and a plate covering the folding plate, and the row of through holes covers the folding plate and the folding plate. The opening is provided only in the direction from the space surrounded by the plate to the lower surface of the folding plate.

(2) In the liquid spraying device of (1), the shape of the bent cross section of the folding plate has a sawtooth shape such that the apex of the bent portion covers the valley.

It is characterized in that

In the liquid spraying apparatus of the present invention, the level of the small holes is near the apex of the plate bent in the shape of a folding screen, and the plate bent in the shape of a folding screen and the upper part of the plate are surrounded by the plate and the bottom of the tubular bag tube. Since it is at a higher position, even if foreign matter enters, it will not get up to the small hole because it accumulates near the valley of the folding screen plate that is the bottom of the tubular bag tube, so the small hole will be clogged. There is no need to spray the required amount of the sprayed liquid. Even if the assembling system of the spraying device is a little bad, or even if the spraying device is slightly inclined, the liquid will come out uniformly from all the small holes. Furthermore, the spray liquid that has flowed out of the small holes hits the plate that is bent like a folding screen on the lower surface of the spraying device, flows down along the surface, and is dripped at a predetermined position from the bent tip at the bottom of the plate that is bent like a folding screen. .

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Examples will be described below.

FIG. 2 is a front view of a spraying device according to one embodiment of the present invention, and FIG. 1 is a sectional view taken along the line II--II of FIG. The spraying device of this embodiment can be applied as an absorber of an absorption chiller-heater, an evaporator, or a low-temperature regenerator.

In the figure, 1 is a folding plate, 3 is a small hole, 4 is a bent portion of a drip tip, 6 is a plate, 7 is a flow path in a bag tube composed of 1 and 6, and 5 is liquid blown out from 3. The outer wall of the folding plate on which the flow collides, 8 is a droplet. The folding screen plate 1 and the plate 6 arranged horizontally form a bag tube, and at a high level of the side wall near the apex of the folding screen plate in the longitudinal direction,
Many small holes 3 are opened at predetermined intervals. The diameter of the small hole 3 is
Even if the spraying device is tilted during the spraying operation, it is made slightly smaller so that the liquid is sprayed uniformly from any of the small holes. In other words, the diameter of the small hole 3 is set so that the pressure loss when the liquid is ejected from the small hole 3 is larger than the pressure loss of the flow path 7 in which the liquid flows in the bag tube constituted by the folding plate 1 and the plate 6. Since it is determined, the liquid is evenly distributed. The liquid spouted from the small holes 3 hits the side wall near the bent apex of the folding plate and spreads in the direction of the arrow, and the flow velocity slowly drops along the side wall of the folding plate slowly from the bent tip at the bottom of the folding plate. It operates so as to drop the liquid at a predetermined position such as the heat transfer tube 9. As a result, the liquid does not fly out of the spraying device and hit the heat transfer pipe 9 or the like, and the liquid does not fly out, and the liquid does not spout out at an unscheduled place and does not drop into the heat transfer pipe 9 at all. Further, since the small holes 3 are opened at a high level of the side wall near the apex of the folding plate, even if foreign matter is mixed in, the small holes are accumulated in the valley portion of the folding plate 1 to form small holes. Since foreign matter does not reach up to 3, there is no uneven distribution due to clogging.

FIG. 4 is a front view of a spraying device according to a second embodiment of the present invention, and FIG. 3 is a sectional view taken along the line IV-IV of FIG. 4, in which the one corresponding to the folding screen plate 1 of FIG. It is deformed and its cross-sectional shape is sawtooth. Further, a large number of small holes 10 are opened at a predetermined interval at a high level of the outer wall on the left side of the cross section, and a baffle plate 11 is attached while securing a space 12 on the outer side thereof. The liquid spouted from the small holes 3 hits the side wall near the bent apex of the folding plate and spreads in the direction of the arrow, and the flow velocity slowly drops on the side wall of the folding plate slowly from the bent tip at the bottom of the folding plate. It operates so as to drop the liquid at a predetermined position such as the heat transfer tube 9. At this time, almost no liquid adheres to the side wall where the small hole 3 is opened, and therefore, the liquid ejected from the small hole 3 does not flow down on the side wall where the small hole 3 is formed, so it is ejected from the small hole 3. Since the liquid is dropped from a fixed bent tip at the bottom of the folding plate, the amount of the liquid dropped from each bent tip is arbitrarily determined by adjusting the number of small holes 3 formed in the corresponding side wall. You can Further, the liquid is jetted from the small hole 10 into the space 13 surrounded by the outer wall of the folding screen 1 and the baffle 11. The jetted liquid spreads in the direction of the arrow in the space 13 and the flow velocity decreases and slowly flows along the outer wall of the folding screen plate, and from the bent tip at the bottom of the folding plate plate to a predetermined position such as the heat transfer tube 9. Operates as a drop of liquid. As a result, according to the present embodiment, it is possible to realize a spraying device for accurately and uniformly spraying a predetermined amount of liquid from all of the bent tips at the bottom of the folding screen plate.

[0014]

EFFECTS OF THE INVENTION According to the present invention, (1) the structure is simpler and the number of parts is smaller than that of the conventional liquid spraying device, so that it is easy to manufacture and is inexpensive.

(2) The liquid can be uniformly sprayed to a precise position.

(3) The shape of the bent cross section of the folding plate has a sawtooth shape such that the apex of the bent portion covers the valley.

(4) Since the spraying device is unitized,
It is possible to prepare the spraying rows of 2, 3, 4, 5 and arrange them side by side by combining the spraying apparatuses of the number of these rows and to use them compactly with the required number of rows.

[Brief description of the drawings]

FIG. 1 is a sectional view of a spraying device according to an embodiment of the present invention.

FIG. 2 is a front view of the spraying device according to the embodiment of the present invention.

FIG. 3 is a sectional view of a spraying device according to a second embodiment of the present invention.

FIG. 4 is a front view of the spraying device according to the second embodiment of the present invention.

FIG. 5 is a front view of a conventional spraying device.

FIG. 6 is a sectional view taken along the line VI-VI in FIG. 5;

FIG. 7 is a front view of a conventional spraying device.

8 is a sectional view taken along the line XIII-XIII in FIG.

[Explanation of symbols]

1, 1a ... folding plate, 3, 3a ... small hole, 4, 4a ... drip tip bent portion, 6, 6a ... plate.

Claims (1)

[Claims] 1. A liquid characterized by bending a plate on a folding screen, forming a plurality of holes in the vicinity of the apex of the folding part, and enclosing the plate bent on the folding screen with a plate to form a tubular shape. Spraying device.