JP5591516B2 - Turbulence generator for atomizer - Google Patents

Description

The present invention relates to a member of a sprayer, and in particular, has a plurality of straight liquid passages and is arranged inside the sprayer, thereby mixing a plurality of flows inside the sprayer and increasing the spraying pressure of the sprayer. The present invention relates to a turbulent flow generating member for a sprayer.

In general, there are three types of nozzles, a sector nozzle, a full cone nozzle, and an empty cone nozzle. Among them, the various fan-shaped nozzles A all have an injection port A1 (see FIG. 1) having a predetermined angle. By adjusting the angle of the ejection port A1 of the sector nozzle A, the spray flow rate and the spray angle can be changed. The full cone nozzle B has a core B1 disposed therein. The core B1 can be an X-shaped core or a multi-slotted core (see FIG. 2). This type of core has a spiral groove structure, and sprays with a full cross section by rotating the fluid.

FIG. 3A is a schematic diagram showing a spray angle in front of the fan-shaped nozzle A. FIG. 3B is a schematic diagram showing the spray angle on the side surface of the fan-shaped nozzle A. FIG. Among them, a water curtain having a length of about 50 m / m to 70 m / m is generated on the side surface of the sprayed mist due to the occurrence of a contraction phenomenon (Vena contractor effect) (depending on pressure and flow rate, The length of the water curtain formed is different, when applied to a high pressure washer, the spray angle is 25 degrees to 32 degrees, and at the same time, the length of the water curtain is increased by arranging a stabilizer. The cleaning effect is enhanced). Thereafter, since the sprayed mist expands, it is pulverized to generate small water droplets. In the expanded portion, the spray angle is between about 10 degrees and 15 degrees, but since the effective impact force is concentrated in the middle portion of the spray, the effective spray range is generally linear (in general, in industry When used, the height at which the nozzle is placed is typically 100 m / m to 180 m / m).

In some industrial fields, fan-shaped nozzles or full-cone nozzles are used, but the characteristics of both are different. In the manufacturing process of a printed circuit board, etching is one of the steps for forming a circuit. Printed boards are currently being made thinner and thinner lines. Fan nozzles can be used, limited by the aquarium and the rollers arranged. Please refer to FIG. 4A and FIG. 4B. 4A and 4B are schematic views showing a state in which the printed circuit board C is sandwiched between the front row roller D2 and the rear row roller D1. A sector nozzle A is arranged between the front row roller D2 and the back row roller D1 corresponding to each other. FIG. 4A shows the spray range a on the side, and FIG. 4B shows the spray area b formed by the sector nozzle. In the etching process, the advantage of using the fan-shaped nozzle is (1) it can be sprayed in a rectangular shape, so it does not become non-uniform as in the case of using a water tank. (2) Since the spraying range of the side surface is narrow, it is not shielded by the roller and does not become uneven. However, the drawbacks are as follows: (1) When a thin plate is etched, the impact force is too great, so the thin plate is likely to bend. (2) Since the etching mechanism performs mass transfer, when a fan-shaped nozzle is used, the non-spray time is significantly longer than the spray time, making it difficult to maintain a uniform concentration. . That is, the etching rate cannot be accurately controlled, and etching tends to be performed excessively.

In addition to the fan-shaped nozzle, a full cone nozzle B can be used. 5A and 5B are schematic views showing a state in which the printed circuit board C is sandwiched between the front row roller D2 and the rear row roller D1. The full cone nozzle B is disposed between the front row roller D2 and the back row roller D1 corresponding to each other. 5A shows the spray range c on the side, and FIG. 5B shows the spray area d formed by the full cone nozzle B. FIG. In the etching process, the advantages of using the full cone nozzle B are as follows: (1) Since the spray area is larger than the spray area of the sector nozzle, the impact force is weaker than that of the sector nozzle and the thin plate is not easily bent. (2) Since the spraying time becomes long, it is easy to maintain a uniform concentration and it is rare to perform excessive etching. Disadvantages are: (1) It is necessary to lower the height at which the nozzles are arranged, otherwise the spray range becomes too wide and sprays onto the rollers, which are shielded by the rollers and the etching becomes non-uniform. For this reason, it is necessary to increase the number of nozzles. (2) Since the fluid is rotated by the core having the spiral groove, the effective spray pressure is reduced, and it becomes difficult to spray uniformly in a full circle. Accordingly, there has been a demand for a nozzle that can achieve a spray range e as shown in FIG. 6A and a rectangular spray area f as shown in FIG. 6B.

Also, in the conventional rectangular spraying technique, as shown in FIG. 7, there is one in which an orifice plate (orifice plate) E having a hole in the middle is arranged at the inlet of the fan-shaped nozzle A. After the fluid passes through the orifice, the flow is changed to form a shape having a spray angle on the side surface, thereby performing a rectangular fan-shaped spray. However, the disadvantages of this prior art are: (1) When the fluid passes through the orifice, 5% to 10% of the pressure is lost and the impact force is reduced. (2) Since the flow gradually recovers after the fluid passes through the orifice, the collision force on the side surface concentrates on the intermediate portion and cannot be uniformly distributed.

In another prior art, the orifice plate E is used for a full cone nozzle B (see FIG. 8) formed with a small angle (usually 30 degrees). This full cone nozzle B is mainly used for washing bottles in the food industry. This prior art, like the aforementioned fan nozzle, has the disadvantage that after the fluid has passed through the orifice, 5% to 10% of the pressure is lost and the impact force is reduced.

JP 11-13594 A

The purpose of the present invention is to overcome the disadvantages of the conventional fan nozzle, the conventional conical nozzle with a core having a spiral groove, and the pressure existing in the fan nozzle and the conical nozzle with the conventional orifice plate. It is an object of the present invention to provide a turbulent flow generating member for a sprayer disposed in a sprayer such as a fan-shaped nozzle and a full cone nozzle and a water jet sprayer, which can solve the disadvantage that the impact force is reduced due to the loss of the spray.

In order to solve the above-described problems, the present invention provides a turbulent flow generating member for a sprayer. The turbulent flow generating member for a sprayer of the present invention can be arranged in various sprayers. The turbulent flow generating member for a nebulizer of the present invention includes a main body. The main body includes at least two types of liquid passages having different shapes or sizes. The liquid passage is basically a through-hole penetrating the sprayer turbulent flow generating member in the vertical direction, or a vertical groove or an oblique groove penetrating the sprayer turbulent flow generating member in the vertical direction. This increases the spray pressure by mixing at least two types of multi-streams within the sprayer.
The atomizer is typically a fan nozzle, a full cone nozzle or a water jet atomizer used to perform a rectangular spray.

The present invention has the following features.
(1) It includes a main body which is disposed inside the sprayer and has at least two kinds of liquid passages having different shapes or sizes, and the plurality of liquid passages are straight passages penetrating both end faces of the main body, and the liquid A turbulent flow generating member for a sprayer, wherein the spray pressure is increased by mixing at least two kinds of multi-streams inside the sprayer by a passage.
(2) The turbulent flow generating member for a sprayer according to (1), wherein the liquid passage is a passage having two different sizes of a circle, a rectangle, or another geometric shape.
(3) The turbulent flow generating member for a sprayer according to (1), wherein the liquid passage is a passage having two different shapes.
(4) One of the liquid passages is a circular, rectangular, or other geometric passage that vertically penetrates both ends of the main body, and the other is provided at equiangular intervals on the edge of the main body. The turbulent flow generating member for a sprayer according to (3), wherein the turbulent flow generating member is a plurality of notches penetrating the main body.
(5) The sprayer turbulent flow generating member according to (4), wherein the notch is a vertical notch penetrating the main body in the vertical direction.
(6) The sprayer turbulent flow generating member according to (4), wherein the notch is an oblique notch penetrating the main body in an oblique direction.
(7) The turbulent flow generating member for a sprayer according to (1), wherein the main body has a columnar shape.
(8) The turbulent flow generating member for a sprayer according to (1), wherein the main body has a long plate shape.
(9) The sprayer turbulent flow generating member according to (1) or 7, wherein the sprayer is a fan-shaped nozzle that performs rectangular spraying.
(10) The turbulent flow generating member for a sprayer according to (1) or (7), wherein the sprayer is a full cone nozzle.
(11) The sprayer turbulent flow generating member according to (1) or (8), wherein the sprayer is a water jet sprayer.

The feature of the present invention is that at least two kinds of flows are mixed inside the sprayer by two or more kinds of liquid passages. By calculating the overall momentum balance, it can be seen that the downstream pressure increases. By mixing a plurality of flows at the same time, the original streamline flow can be changed, and the problem of the flow contraction phenomenon (Vena contractor effect) in hydrodynamics can be solved. When the turbulent flow generating member for a sprayer according to the present invention is arranged in a fan-shaped nozzle, the collision force increases and the side angle of the spray increases, whereby uniform rectangular spraying can be performed. When the turbulent flow generating member for a sprayer according to the present invention is arranged in a full-cone nozzle with a small angle, the liquid passage of the turbulent flow generating member for a sprayer is a straight passage, and a spiral groove or other curved groove for rotating the fluid is provided. Therefore, the pressure is not lost as in the case of a sprayer having a conventional core. Therefore, the impulsive force is higher than that of the conventional sprayer in which the core is arranged, and a full-circle spray that does not overlap can be performed. Even when the turbulent flow generating member for a sprayer of the present invention is disposed in a water jet sprayer, uniform rectangular spraying can be performed.

It is sectional drawing which shows the conventional fan-shaped nozzle. It is a partial cutaway perspective view which shows the conventional full cone nozzle. It is a schematic diagram which shows the spray angle of the front of the conventional fan-shaped nozzle. It is a schematic diagram which shows the spray angle of the side surface of the conventional fan-shaped nozzle. It is a schematic diagram which shows the spray range of the side surface of the conventional fan-shaped nozzle. It is a schematic diagram which shows the spray area of the conventional fan-shaped nozzle. It is a schematic diagram which shows the spray range of the side surface of the conventional full cone nozzle. It is a schematic diagram which shows the spray area of the conventional full cone nozzle. It is a schematic diagram which shows the spray range of the side surface of the fan-shaped nozzle with which the turbulent flow generation member for sprayers of this invention is arrange | positioned. It is a schematic diagram which shows the spray area of the side surface of the fan-shaped nozzle with which the turbulent flow generation member for sprayers of this invention is arrange | positioned. It is sectional drawing which shows the fan-shaped nozzle by which the conventional orifice plate is arrange | positioned. It is sectional drawing which shows the full cone nozzle by which the conventional orifice plate is arrange | positioned. It is a perspective view which shows the turbulent flow generation member for sprayers by 1st Embodiment of this invention. It is a perspective view which shows the turbulent flow generation member for atomizers by 2nd Embodiment of this invention. It is a perspective view which shows the turbulent flow generation member for sprayers by 3rd Embodiment of this invention. It is sectional drawing which shows the state by which the turbulent flow generation member for sprayers by 1st Embodiment of this invention is arrange | positioned at the fan-shaped nozzle. It is sectional drawing which shows the state by which the turbulent flow generation member for sprayers by 2nd Embodiment of this invention is arrange | positioned at the full cone nozzle. It is a perspective view which shows the state by which the turbulent flow generation member for sprayers by 3rd Embodiment of this invention is arrange | positioned at the water jet type sprayer. It is a schematic diagram which shows the spray range of the front of the fan-shaped nozzle by which the turbulent flow generation member for sprayers of this invention is arrange | positioned. It is a schematic diagram which shows the spray range of the side surface of the fan-shaped nozzle with which the turbulent flow generation member for sprayers of this invention is arrange | positioned.

In order that those skilled in the art can practice the present invention, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The turbulent flow generating member for a sprayer according to the present invention is disposed inside the sprayer. The nebulizer turbulent flow generating member of the present invention has at least two liquid passages having different shapes or sizes. The plurality of liquid passages are basically through-holes penetrating the turbulent flow generating member for the sprayer in the vertical direction, or vertical grooves or oblique grooves penetrating the turbulent flow generating member for the sprayer in the vertical direction. The liquid passage mixes at least two different flows inside the nebulizer and increases the spray pressure. There are a plurality of embodiments of the turbulent flow generating member for a sprayer of the present invention, and preferred embodiments will be shown below.

(First embodiment)
FIG. 9A is a perspective view showing a turbulent flow generating member for a sprayer according to the first embodiment of the present invention. The turbulent flow generating member 1 for a nebulizer of the present embodiment has a substantially cylindrical shape. The nebulizer turbulent flow generating member 1 of the present embodiment includes a main body 11. The main body 11 includes a board part 111 and a shaft part 112 provided perpendicular to the board part 111. In the center of the main body 11, a circular liquid passage 113 penetrating the shaft portion 112 and the board portion 111 is provided in the vertical direction. In addition, liquid passages 114 penetrating the board part 111 in the axial direction are provided at equiangular intervals on the edge of the board part 111. The depths at both ends of each liquid passage 114 are the same, forming a straight passage. However, the size, shape and number of the liquid passages 113 and 114 are not limited. For example, the liquid passage 113 may be a polygonal passage (not shown) having a plurality of different sizes and arranged symmetrically. Further, the liquid passage 114 may have an arc shape (not shown) that sinks inside.

(Second Embodiment)
FIG. 9B is a perspective view showing a turbulent flow generating member for a sprayer according to a second embodiment of the present invention. The shape of the turbulent flow generating member 1 ′ for the nebulizer of the present embodiment is substantially the same as that of the previous embodiment. The sprayer turbulent flow generating member 1 ′ of the present embodiment includes a main body 11 ′ having a panel portion 111 ′ and a shaft portion 112 ′. Moreover, it has the liquid channel | path 113 'which penetrates the axial part 112' and the board part 111 'in the vertical direction. However, in this embodiment, the depth of one end and the other end of each liquid passage 114 ′ provided at equal intervals on the edge of the board portion 111 ′ is different, and the liquid passage 114 ′ having an inclination is formed. The point formed is different from the first embodiment.

In addition to the liquid passages having two different end face shapes shown in the above-described embodiment, the liquid passage has the same end face shape as the sprayer turbulent flow generating member, but a plurality of linear passages having different sizes. It can be a liquid passage (not shown) in which the holes are provided symmetrically. This creates two different flows.

(Third embodiment)
The substantially cylindrical turbulent flow generating member described above is applied to the inside of a fan-shaped nozzle having a general rectangular injection port and the inside of a full cone nozzle. FIG. 9C is a perspective view showing a turbulent flow generating member for a sprayer according to a third embodiment of the present invention, and the turbulent flow generating member for a sprayer according to this embodiment is applied to the inside of a water jet sprayer. The main body 21 of the sprayer turbulent flow generating member 2 according to the present embodiment has an appropriate thickness. In the center of the main body 21, a plurality of liquid passages 22 penetrating the main body 21 in the vertical direction are provided at equal intervals. Sawtooth-shaped edges are formed symmetrically on both sides of the main body 21, and straight liquid passages 23 are formed in the notch portions of the sawtooth-shaped edges. The shape, size, and number of the liquid passages 22 and 23 are not limited. For example, the liquid passage 22 may be a conical passage (not shown) in which the size of one end face and the other end face is different. Further, the liquid passage 23 can be a liquid passage (not shown) having an inclination with one end face and the other end face having different notch depths.

The state which has arrange | positioned the turbulent flow generation member for sprayers of this invention to the sprayer is shown to FIG. 10A, FIG. 10B, and FIG. 10C. The sprayer turbulent flow generating member 1 according to the first embodiment and the sprayer turbulent flow generating member 1 ′ according to the second embodiment are both applied to the inside of a fan-shaped nozzle or a full cone nozzle. FIG. 10A is a cross-sectional view showing a state in which the turbulent flow generating member 1 for a sprayer according to the first embodiment is arranged inside the sector nozzle 3. FIG. 10B is a cross-sectional view showing a state in which the turbulent flow generating member 1 ′ for a sprayer according to the second embodiment is disposed inside the full conical nozzle 4. FIG. 10C is a perspective view showing a state in which the plate-like turbulent flow generating member 2 for the sprayer according to the third embodiment is arranged inside the water jet sprayer 5. However, the kind of sprayer to which the turbulent flow generating member for a sprayer of the present invention is applied is not limited. A suitable arrangement position of the turbulent flow generating member for the sprayer is a position close to the injection port in the cavity of the sprayer, but a distance is maintained between the injection port. The state of FIG. 10A will be described as an example. When the high pressure liquid fills the cavity of the sprayer, some liquid passes through the liquid passage 111, and some other liquid passes through the liquid passage 114. . As a result, two types of flows (at least two types in the present invention) are formed. The two types of flows are injected at a high pressure by being mixed in the gap between the turbulent flow generating member 1 for the sprayer and the injection port 31.

Reference is made to FIGS. 6A, 6B, 11A and 11B. 6A and 6B are schematic views showing a state in which the printed circuit board C is sandwiched between the front row roller D2 and the rear row roller D1. A fan-shaped nozzle 3 having a turbulent flow generating member for a sprayer according to the present invention is disposed between the front row roller D2 and the back row roller D1 corresponding to each other. 6A shows the spray range e on the side surface, and FIG. 6B shows the spray area f formed by the fan-shaped nozzle. FIG. 11A is a schematic diagram showing a spray range in front of the fan-shaped nozzle. FIG. 11B is a schematic diagram illustrating a spray range on a side surface of the fan-shaped nozzle.

A sprayer turbulent flow generating member (not shown) is disposed inside the fan-shaped nozzle 3, so that two or more types of flows generated in two or more types of liquid passages are mixed by the sprayer turbulent flow generating member. The As a result, the liquid inside the cavity of the fan-shaped nozzle 3 that flows in a streamline turbulently (when the turbulent flow generating member for the sprayer is not disposed). In addition, when the liquid passes through the liquid passage, the pressure does not decrease unlike the nozzle in which the conventional orifice plate is arranged. The shape of the front surface of the spray pattern is a wide-angle fan shape, and the shape of the side surface is such that a spray angle of about 30 degrees is formed at the spray port portion of the fan-shaped nozzle 3. The side surface angle can be designed as necessary, and a contraction phenomenon does not occur unlike a conventional fan nozzle in which a turbulent flow generating member for a sprayer is not disposed. Since the spray range is increased, an enlarged rectangular spray can be performed. The liquid passage of the turbulent flow generating member for a sprayer of the present invention is a straight passage and does not have a spiral groove or other curved groove for rotating the fluid, so that the pressure is reduced like a sprayer having a conventional core. There is nothing to do. Therefore, as can be seen from the total momentum balance calculation, the collision force can be increased. Therefore, even if the height of the sprayer is limited so that the spray range is between the two rollers of the etching equipment, it has a strong impact force and the uniformity of etching is not affected. Further, since the generated collision force is uniform, the etched plate surface is not curved.

When the turbulent flow generating member for a sprayer according to the present invention is arranged on a full conical nozzle that is often used for cleaning a bottle, a strong collision force can be generated. A spray angle of about 30 degrees is formed at the nozzle outlet, and the inside of the bottle and the bottom of the bottle can be reliably washed (a linear spray formed by a conventional full-cone nozzle without a turbulent flow generating member for the sprayer) Then only the bottom of the bottle can be washed). The same spraying effect can be achieved by arranging the turbulent flow generating member for a sprayer of the present invention in a nozzle having an injection port of less than 30 degrees (usually, normally 30 degrees).

When the turbulent flow generating member for a sprayer of the present invention is disposed in a water jet sprayer, uniform and non-overlapping rectangular sprays as shown in FIG. 6B can be performed. The turbulent flow generating member for a nebulizer according to the present invention can completely solve the phenomenon in which weight transmission is not uniform due to fluid flow, and thus is useful for various industrial applications.

The above description shows preferred embodiments of the present invention and does not limit the present invention. Accordingly, all modifications or changes within the scope not departing from the gist of the present invention are included in the protection scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Turbulent flow generating member for sprayer 11 Main body 111 Board part 112 Shaft part 113 Liquid passage 114 Liquid passage 1 'Turbulent flow generating member for sprayer 11' Main body 111 'Board part 112' Shaft part 113 'Liquid passage 114' Liquid passage 2 Sprayer Turbulent flow generating member 21 Main body 22 Liquid passage 23 Liquid passage 3 Fan-shaped nozzle 31 Injection port 4 Filling cone nozzle 5 Water jet sprayer A Fan-shaped nozzle A1 Injection port B Filling cone nozzle B1 Core C Print substrate D1 Rear row roller D2 Front row roller E Orifice plate a Side spray range b Spray area c Side spray range d Spray area e Side spray range f Spray area

Claims (9)

The main body is disposed inside the sprayer and includes at least two kinds of liquid passages having different shapes or sizes, and the plurality of liquid passages are straight passages penetrating both end faces of the main body, and the liquid passages The spray pressure is increased by mixing at least two types of multi-streams inside the atomizer,
The liquid passage is a passage having two different shapes,
One of the liquid passages is a circular, rectangular or other geometric passage that vertically penetrates both ends of the main body, and the other is provided at an equiangular interval on the edge of the main body. A turbulent flow generating member for a sprayer, wherein the turbulent flow generating member is a plurality of notches penetrating therethrough . 2. The turbulent flow generating member for a sprayer according to claim 1, wherein the liquid passage is a passage having two different sizes of a circle, a rectangle, or another geometric shape. The said notch is a vertical notch which penetrates the said main body to the vertical direction, The turbulent flow generation member for sprayers of Claim 4 characterized by the above-mentioned. The turbulent flow generating member for a sprayer according to claim 4, wherein the notch is an oblique notch penetrating the main body in an oblique direction. The turbulent flow generating member for a sprayer according to claim 1, wherein the main body has a columnar shape. The turbulent flow generating member for a sprayer according to claim 1, wherein the main body has a long plate shape. The turbulent flow generating member for a sprayer according to claim 1 or 7, wherein the sprayer is a fan-shaped nozzle that performs rectangular spraying. The turbulent flow generating member for a sprayer according to claim 1 or 7, wherein the sprayer is a full cone nozzle. The turbulent flow generating member for a sprayer according to claim 1 or 8, wherein the sprayer is a water jet sprayer.

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