Spray nozzle and carbonated water producing device including the same

Abstract

To provide a spray nozzle capable of spraying a sufficiently atomized liquid while having a simple structure, and a carbonated water producing device capable of producing carbonated water with a high gas volume by including the spray nozzle.SOLUTION: The present invention is an atomizer 100 including a circulation pipe portion 1 through which a liquid circulates, a lid portion 2 attached to an opening portion 10 at a distal end of the circulation pipe portion 1, and a piece 3 placed on a pedestal portion 11 provided inside the circulation pipe portion 1, wherein a spray hole 20 is provided at a center of the lid portion 2, the piece 3 is provided with a streak portion 32a cut out in a spiral shape, and the liquid is guided in a spiral shape along the streak portion 32a and sprayed from the spray hole 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a spray nozzle and a carbonated water production device equipped with the same, and more particularly to a spray nozzle for spraying liquid into the air and a carbonated water production device for producing carbonated water. [Background technology]

[0002] A spray nozzle is a nozzle that can spray a liquid into the air in the form of a mist. Spray nozzles are used not only for spraying chemicals in the fields of agriculture and industry, but also in recent years for spraying mist for humidification and cooling using the heat of vaporization of water.

[0003] However, spray nozzles generally have the drawback that they must be replaced in their entirety when they break down, and that maintenance is difficult to perform. In response to this, spray nozzles using detachable tops have been developed, which allow the tops to be replaced as needed and also make maintenance easier by removing the tops.

[0004] A known example of a spray nozzle is a low-pressure spray nozzle comprising a nozzle tube having a longitudinal flow groove for pressurized air on its circumferential surface and a central flow hole for the spray material, the nozzle tube having a central outlet hole communicating with the flow hole, and a small, generally nozzle-shaped top body attached to its tip, the top body having a generally conically inclined tip surface and recessed therein a plurality of outlet grooves that allow the pressurized air supplied through the flow groove to swirl and spray around the tip outlet of the outlet hole; a nozzle head having a small nozzle hole drilled in its tip surface and a large fitting hole communicating with the nozzle hole; the nozzle tube is screwed and fixed into this fitting hole so that the outlet of the top body is positioned coaxially with the nozzle hole at a slight interval and the conical inclined surface of the top body is in close contact with the inner conical bottom surface of the fitting hole; and the nozzle body constructed as described above is attached to a nozzle main body having supply paths for the spray material and the pressurized air (see, for example, Patent Document 1).

[0005] Also, there is known an injection nozzle in which the rear of the axial hole of a nozzle tube having an end wall at the front is limited by a wall, thereby forming a cylindrical chamber between the rear wall surface of the end wall and the front wall surface of the wall, an injection hole is formed through the end wall and an injection passage is opened in the front wall surface of the wall, a cylindrical top is loosely inserted into the cylindrical chamber, and the top has a cavity concentric with its peripheral surface and a tangential groove formed in a tangential direction relative to a fixed rotational direction of the top, and at least the front wall part of the top has a tangential groove connecting the peripheral surface of the top and the cavity in the tangential direction relative to the peripheral wall of the cavity (see, for example, Patent Document 2).

[0006] Also known is a spray nozzle that sprays a liquid and is configured with an external housing member and an internal piece member, in which the external housing member has a hollow portion that accommodates the internal piece member and an injection hole that is positioned downstream of the hollow portion in the flow of the liquid and that injects the liquid, and the internal piece member has a bulging portion that bulges out downstream of the flow of the liquid, and the inner wall surface of the hollow portion and the side surface of the bulging portion form a flow path for the liquid, and the width of the flow path narrows toward the downstream side of the flow of the liquid (see, for example, Patent Document 3). [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Utility Model Application Publication No. 60-112366 [Patent Document 2] Japanese Utility Model Application Publication No. 03-32959 [Patent Document 3] Registered Utility Model No. 3172430 Summary of the Invention [Problem to be solved by the invention]

[0008] However, the spray nozzles described in the above Patent Documents 1 to 3 utilize a top, and the structure cannot be said to be sufficiently simple. Furthermore, the sprayed liquid is not sufficiently atomized.

[0009] The present invention has been made in consideration of the above circumstances, and aims to provide a spray nozzle that has a simple structure but is capable of spraying sufficiently finely atomized liquid, and a carbonated water production device that is equipped with the same and can produce carbonated water with a high gas volume. [Means for solving the problem]

[0010] The inventors discovered that the above problem could be solved by providing a lid and a top in addition to the flow pipe section, and by providing a spirally cut ridge section in the top and guiding the liquid to the ridge section, and thus completed the present invention.

[0011] The present invention relates to a spray nozzle for spraying a liquid, which comprises a flow pipe section through which the liquid flows, a lid section attached to the opening at the tip of the flow pipe section, and a top placed on a base section provided inside the flow pipe section, with a spray hole provided in the center of the lid section and a spirally cut-out ridge section in the top, so that the liquid is guided spirally along the ridge section and sprayed from the spray hole.

[0012] In the spray nozzle of the present invention, it is preferable that the top is a cylindrical shape with a bottom comprising a side wall portion and a bottom wall portion, that a rib portion is provided on the side wall portion, and that the rib portion communicates with a space surrounded by the lid portion, the side wall portion, and the bottom wall portion.

[0013] In the spray nozzle of the present invention, it is preferable that a bulging portion bulging toward the space portion is provided at the center of the bottom wall portion.

[0014] In the spray nozzle of the present invention, it is preferable that a flow hole is provided in the center of the bottom wall portion, passing through the bulging portion in the direction of flow of the liquid.

[0015] In the spray nozzle of the present invention, it is preferable that the side wall portion is provided with a plurality of ridges, and that these ridges do not intersect with each other.

[0016] The present invention is a carbonated water production device comprising a sealed container filled with carbon dioxide gas and the above-mentioned spray nozzle for spraying water within the sealed container, wherein the spray pressure of the water in the spray nozzle is 0.3 to 5.0 MPa.

[0017] In the carbonated water production apparatus of the present invention, the spray nozzle is preferably arranged so as to spray water upward within the sealed container. [Effects of the Invention]

[0018] The spray nozzle of the present invention has an extremely simple structure, since it is only necessary to include at least a flow pipe portion, a lid portion, and a top. In the spray nozzle, the liquid flowing through the flow pipe is guided along the ribs of the nozzle and sprayed from the spray holes. At this time, since the ridge portion is spiral, the liquid is guided to the lid portion in a spiral shape and is forcibly sprayed from the spray hole while maintaining the rotational moment, so that the liquid is sufficiently atomized. As a result, the spray nozzle of the present invention has a simple structure, but is capable of spraying sufficiently atomized liquid from the spray holes.

[0019] Furthermore, when the top is cylindrical with a bottom, the space surrounded by the lid, side wall, and bottom wall is connected to the rib portion provided on the side wall, so that the liquid can flow into the space. The liquid that has flowed into the space is guided by the liquid guided to the ridge portion, and together with this, it forms a vortex and is guided to the injection hole side, where it is forcibly sprayed from the spray hole. This allows the liquid to be sufficiently atomized in the spray nozzle, and the amount of liquid sprayed can be increased.

[0020] In this case, by providing a bulging portion in the center of the bottom wall portion that bulges toward the space portion, the liquid that flows into the space portion is guided toward the lid portion by the bulging portion without stagnating in the space portion. This makes it easier for the liquid that has flowed into the space to be guided by the liquid that is guided to the ridge portion.

[0021] In the spray nozzle of the present invention, a flow hole is provided in the center of the bottom wall portion, penetrating the bulge portion in the direction of liquid flow, so that the liquid flows not only from the ridge portion into the space portion, but also from the flow hole into the space portion. This allows the spray nozzle to spray a larger amount of liquid.

[0022] In the spray nozzle of the present invention, when the side wall portion is provided with multiple ribs that do not intersect with each other, the degree of swirling of the liquid increases, and the liquid is guided toward the lid portion and forcibly sprayed from the spray hole. This allows the liquid to be atomized more sufficiently in the spray nozzle, and the amount of liquid sprayed can be increased.

[0023] The carbonated water production device of the present invention is equipped with the above-mentioned spray nozzle, so that the water to be sprayed into the sealed container filled with carbon dioxide gas can be atomized. This increases the contact area between the water and carbon dioxide gas, making it possible to produce carbonated water with a high gas volume.

[0024] In this case, in the carbonated water production device, by setting the spray pressure of the spray nozzle within the above range, the atomized liquid can be sprayed efficiently over as wide a space as possible. Furthermore, by arranging the spray nozzle so that the water is sprayed upward inside the sealed container, the water is sprayed upward like a fountain, so that the time the water stays in the air can be made as long as possible. As a result, the carbonated water production device can produce carbonated water with a sufficiently high gas volume. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 1 is a schematic perspective view showing a spray nozzle according to this embodiment. [Figure 2] FIG. 2 is a schematic exploded view of the spray nozzle shown in FIG. [Figure 3] 3(a) is a perspective view of the top shown in FIG. 2, FIG. 3(b) is a schematic top view of the top shown in FIG. 3(a), FIG. 3(c) is a schematic side view of the top shown in FIG. 3(a), and FIG. 3(d) is a schematic cross-sectional view of the top shown in FIG. 3(b) taken along line AA. [Figure 4] FIG. 4 is a schematic side view showing the carbonated water producing device according to this embodiment. [Figure 5] FIG. 5 is a perspective view showing a top of a spray nozzle according to another embodiment. [Figure 6] FIG. 6 is a perspective view showing a top of a spray nozzle according to another embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0026] Preferred embodiments of the present invention will be described in detail below, with reference to the drawings as necessary. In the drawings, identical elements are designated by the same reference numerals, and duplicate explanations will be omitted. Furthermore, unless otherwise specified, positional relationships such as up, down, left, and right are based on the positional relationships shown in the drawings. Furthermore, the dimensional ratios of the drawings are not limited to those shown.

[0027] Fig. 1 is a schematic perspective view showing a spray nozzle according to this embodiment, and Fig. 2 is a schematic exploded view of the spray nozzle shown in Fig. 1. The dashed lines in Fig. 1 indicate the internal structure. As shown in FIG. 1, the spray nozzle 100 is cylindrical as a whole and is used to spray a liquid into the air in the form of a mist from a spray hole 20 provided at the tip.

[0028] The type of liquid is not particularly limited, and may be water-based or oil-based as long as it can be sprayed. The liquid may also contain additives such as colorants, preservatives, antibacterial agents, detergents, and minerals. Incidentally, the carbonated water maker described below uses water (drinking water) as the liquid. In this specification, the term "downstream side" means the downstream side in the direction of flow of the liquid, and the term "upstream side" means the upstream side in the direction of flow of the liquid. Note that in a spray nozzle, the liquid flows toward the opening.

[0029] As shown in Figures 1 and 2, the spray nozzle 100 includes a flow pipe section 1 through which a liquid flows, a lid section 2 that seals the tip of the flow pipe section 1, and a top 3 that is built into the flow pipe section 1. As described above, the spray nozzle 100 is made up of the flow pipe portion 1, the lid portion 2, and the piece 3, and has an extremely simple structure. In addition, in the spray nozzle 100, the flow pipe portion 1, the lid portion 2, and the piece 3 can be disassembled individually. That is, the lid portion 2 and the piece 3 can be attached to and detached from the flow pipe portion 1.

[0030] In the spray nozzle 100, the liquid flows through the inside of the flow pipe portion 1, passes through the top 3, and is sprayed from the spray hole 20 in the cover portion 2. At this time, the liquid is guided along the ridges of the top 3, and as a result is sufficiently atomized. Details of these will be described later. Therefore, the spray nozzle 100 has a simple structure, but is capable of spraying liquid that has been sufficiently atomized.

[0031] The flow pipe portion 1 is a cylindrical pipe, and has a flow portion D formed therein through which a liquid can flow. The tip of the flow pipe portion 1 is an opening 10 that is open. In the spray nozzle 100, a supply source (not shown) for supplying a liquid to the flow pipe section 1 is attached via a pipe (including a tube) to the end (rear end) opposite to the tip of the flow pipe section 1. The pipe may also be provided with a pump, a valve, etc.

[0032] In the flow pipe section 1, the flow section D has a small diameter section D3 with a constant diameter from the rear end section to the middle section, a medium diameter section D2 with a larger diameter than the small diameter section D3 from the middle section to the tip section, and a large diameter section D1 at the tip section with a larger diameter than the medium diameter section D2. In addition, in the flow section D, a base section 11 having a tapered inverted truncated cone shape is formed between the small diameter section D3 and the medium diameter section D2. The top 3 is placed on the base section 11. In addition, there is a step between the medium diameter portion D2 and the large diameter portion D1. Therefore, the flow section D is formed in the order of the small diameter section D3, the seat section 11, the medium diameter section D2, and the large diameter section D1 from the upstream side.

[0033] In the flow section D, the top 3 is disposed in the medium diameter section D2. That is, the top 3 is placed on a base section 11 provided inside the flow pipe section 1, and is disposed in the medium diameter section D2. The large diameter portion D1 is provided with a lid portion 2. The lid portion 2 is attached to the large diameter portion D1 by press-fitting.

[0034] At this time, the downstream surface (the surface on the lid portion 2 side) of the side wall portion 32 of the top 3 arranged in the medium diameter portion D2 and the upstream surface (the surface on the top 3 side) of the lid portion 2 attached to the large diameter portion D1 abut against each other. As a result, the top 3 is fixed to the flow pipe 1 in a state where it is sandwiched between the base 11 and the lid 2. In the spray nozzle 100, even if the liquid flowing through the flow section D of the flow pipe section 1 collides with the bottom wall section of the piece 3 when flowing from the small diameter section D3 to the medium diameter section D2, the piece 3 does not move because it is fixed to the flow pipe section 1, and instead flows into the rib section 32a of the piece 3, as described below.

[0035] The piece 3 is built into the flow pipe portion 1. That is, as described above, it is attached to the medium diameter portion D2. 3(a) is a perspective view of the top shown in FIG. 2, FIG. 3(b) is a schematic top view of the top shown in FIG. 3(a), FIG. 3(c) is a schematic side view of the top shown in FIG. 3(a), and FIG. 3(d) is a schematic cross-sectional view of the top shown in FIG. 3(b) taken along line AA. 3(a) to 3(d), the top 3 is a cylindrical shape with a bottom made up of a bottom wall portion 31 and a side wall portion 32, and the area surrounded by the lid portion 2 that abuts against the top 3, the side wall portion 32, and the bottom wall portion 31 forms a space portion S. In other words, the top 3 is oriented so that the bottom wall portion 31 is on the upstream side and the space portion S is on the downstream side.

[0036] In the frame 3, a side wall portion 32 is provided with a ridge portion 32a that is cut out in a spiral shape. The ridge portion 32a is a single line cut diagonally along the circumferential direction of the side wall portion 32 from a predetermined position on the upstream surface of the side wall portion 32, and reaches the downstream surface of the side wall portion 32. The rib portion 32a is a through space formed by cutting the side wall portion 32 in the thickness direction, and therefore communicates with the space portion S.

[0037] In the spray nozzle 100, when the liquid flowing through the flow section D flows into the ridge section 32a, it is guided in a spiral shape. Then, a part of the liquid also flows into the space S from the ridge portion 32a. At this time, the liquid that has flowed into the space S is guided by the flow of liquid guided by the ridge portions 32a. Therefore, the liquid flows through the top 3 in a spiral shape as a whole. Furthermore, since the flow rate of the liquid increases by the amount that flows into the space S, the amount of liquid sprayed can be increased.

[0038] Two rib portions 32a are provided on the frame 3, one on the side shown in Fig. 3(c) and the other on the opposite side. The structure of the rib portion on the opposite side is the same as the structure of the rib portion 32a shown in Fig. 3(c), so a description thereof will be omitted. The top 3 has two rib portions 32a that have the same directionality (diagonal directions at the same angle along the circumferential direction) and do not intersect with each other, so the liquid guided by these is guided independently in a spiral shape without colliding with each other, resulting in the liquid being guided with a greater degree of vortex. Furthermore, by providing two ridge portions 32a, the flow rate of the liquid increases, and therefore the amount of liquid sprayed can be increased.

[0039] In the top 3, the bottom wall 31 is in the shape of a mountain-shaped disk in a side view. That is, in the top 3, a bulging portion 31a is provided on the downstream side (space S side) of the bottom wall 31, the center of which bulges toward the space S side. In the top 3, by providing a bulge portion 31a, liquid flowing into the space S from the ridge portion 32a does not stagnate near the bottom wall portion 31 of the space S, but is guided toward the lid portion 2 by the bulge portion 31a, making it easier to be guided by the flow of liquid guided to the ridge portion 32a.

[0040] Furthermore, in the top 3, a circular hole-shaped flow hole 31b is provided in the center of the bottom wall portion 31, penetrating the bulging portion 31a in the direction of flow of the liquid. In the spray nozzle 100, by providing the communication holes 31b in the bottom wall portion 31, the liquid not only flows into the space portion S from the ridge portions 32a but also flows into the space portion S from the communication holes 31b. This increases the flow rate of the liquid in the spray nozzle 100, making it possible to increase the amount of liquid sprayed.

[0041] Returning to Fig. 2, the lid portion 2 is attached so as to seal the opening 10 at the tip of the flow pipe portion 1. That is, as described above, it is attached to the large diameter portion D1. The lid 2 is disk-shaped and has a round spray hole 20 at its center that penetrates in the direction of liquid flow.

[0042] In the spray nozzle 100, the opening 10 of the flow pipe section 1 is sealed by the lid section 2 except for the spray hole 20, so that most of the liquid swirled by the top 3 temporarily remains on the lid section 2 side of the space section S and is then forcibly sprayed from the spray hole. This allows the liquid to be sufficiently atomized and sprayed only from the spray holes 20. In this case, the ratio of the cross-sectional area of ​​the spray hole 20 to the area of ​​the opening is preferably 0.1 to 20%. In this case, the liquid can be sufficiently diffused, so that it can be sufficiently atomized and an appropriate amount of liquid can be sprayed.

[0043] In the spray nozzle 100, the material of the flow pipe portion 1 can be stainless steel or a resin such as an acrylic resin, a polyacetal resin, or a polypropylene resin. The material of the cover 2 and the frame 3 may be a resin such as an acrylic resin, a polyacetal resin, or a polypropylene resin. The materials of the flow pipe portion 1, the lid portion 2, and the piece 3 may be the same or different. Incidentally, the piece 3 has the spiral rib portion 32a as described above, but does not have flexibility like a spring.

[0044] Since the spray nozzle 100 can spray sufficiently atomized liquid, it can be used in the carbonated water production device described below, as well as for spraying water, liquid fertilizer, pesticides, etc. in the agricultural field, spraying cleaning water and auxiliary agents in the industrial field, spraying water for humidifying living spaces, and spraying water for cooling using the latent heat of vaporization of water.

[0045] FIG. 4 is a schematic side view showing the carbonated water producing device according to this embodiment. As shown in Figure 4, the carbonated water manufacturing device 101 has a carbon dioxide gas inlet means 41 and a carbonated water outlet means 42, and is equipped with a sealed container 4 filled with carbon dioxide gas inside, the above-mentioned spray nozzle 100 for spraying water into the inside of the sealed container 4, a detection means 5 for detecting the upper and lower limits of the liquid level of the carbonated water stored inside the sealed container 4, and a safety valve 6 for releasing the pressure inside the sealed container 4. The detection means 5 is a means for detecting the upper and lower limits of the liquid level of the carbonated water stored inside the sealed container 4. The safety valve 6 is a valve for releasing the pressure in the sealed container 4.

[0046] In the carbonated water producing device 101, carbon dioxide gas is introduced into the sealed container 4 from carbon dioxide gas introduction means 41 such as a gas cylinder. As a result, the inside of the sealed container 4 is filled with carbon dioxide gas. At this time, the pressure inside the closed container 4 is preferably set to 0.1 MPa or higher, regardless of whether carbonated water is present or not.

[0047] Then, water is sprayed from the spray nozzle 100 into the sealed container 4 filled with carbon dioxide gas. A supply source for supplying liquid, such as a water line, water purifier, or water conditioner, is attached to the rear end of the spray nozzle 100 via a pipe (including a tube), and water is supplied to the spray nozzle 100 from the supply source.

[0048] The carbonated water producing device 101 is provided with the above-mentioned spray nozzle 100, and therefore can atomize the water to be sprayed into the sealed container 4 filled with carbon dioxide gas. This increases the contact area between the water and carbon dioxide gas, making it possible to produce carbonated water with a high gas volume. The spray nozzle 100 is disposed in the sealed container 4 so as to spray water upward. This allows the water to be sprayed upward like a fountain, which maximizes the time the water stays in the air. This means that the contact time between the water and carbon dioxide increases, making it possible to produce carbonated water with a high gas volume. The produced carbonated water is stored inside the sealed container 4.

[0049] Here, the spray pressure of the water in the injection nozzle 100 is preferably 0.3 to 5.0 MPa. The flow rate of water in the spray nozzle 100 is preferably 10 to 50 mL / s. Then, the carbonated water stored in the sealed container 4 is discharged to the outside of the sealed container 4 by the carbonated water discharge means 42. In carbonated water production apparatus 101, the gas volume of the carbonated water obtained is preferably 2 GV or more, and more preferably 5 GV or more.

[0050] Although the preferred embodiments of the present invention have been described above, the present invention is not limited to the above embodiments.

[0051] In the spray nozzle 100 according to this embodiment, the piece 3 is detachable from the flow pipe portion 1, but the present invention is not limited to this. For example, the piece 3 and the flow pipe portion 1 may be integral with each other, and the cover portion 2 may be detachable therefrom. Furthermore, the lid portion 2 and the piece 3 may be integral and may be detachable from the flow pipe portion 1. Furthermore, the flow pipe portion 1, the lid portion 2 and the piece 3 may be integrated into one body.

[0052] In the spray nozzle 100 according to this embodiment, the flow section D is formed in the following order from the upstream side: small diameter section D3, base section 11, medium diameter section D2, and large diameter section D1, but this is not limited to this. Furthermore, the tapered, inverted truncated cone-shaped portion between the small diameter portion D3 and the medium diameter portion D2 is the base portion 11, but the shape of the base portion 11 is not limited to this. For example, an annular rib protruding inward may be provided in the flow section D, and this may serve as a base for the piece 3.

[0053] In the spray nozzle 100 according to this embodiment, the top 3 is disposed in the medium diameter portion D2, and the cover portion 2 is press-fitted into the large diameter portion D1, but the invention is not limited to this. For example, the piece 3 may be attached to the flow pipe portion 1 by press-fitting, fitting, screwing, or the like.

[0054] In the spray nozzle 100 according to this embodiment, the downstream surface of the side wall portion 32 of the top 3 and the upstream surface of the lid portion 2 abut against each other, but this is not essential. However, even if the two are not in contact with each other, it is preferable that the piece 3 is fixed to the flow pipe portion 1.

[0055] In the spray nozzle 100 according to this embodiment, the top 3 has two spirally cut ridge portions 32a, but this is not limited to this and the number of ridge portions 32a may be one or three or more. FIG. 5 is a perspective view showing a top of a spray nozzle according to another embodiment. As shown in Fig. 5, a piece 3a of a spray nozzle according to another embodiment has three ridges 32a1 formed by cutting out a side wall portion, which do not intersect with each other. In this top 3a, since it has three ridge portions 32a1, the flow rate of the liquid increases, and the amount of liquid sprayed can be increased. In the piece 3a, the flow rate is sufficient, so that no flow holes are provided in the bottom wall portion 321. The other configurations are the same as those of the piece 3 of the spray nozzle 100 according to this embodiment.

[0056] Furthermore, the ridge portion 32a is formed by cutting out the side wall portion 32, but it may be a simple groove portion. In this case, it is preferable to provide the groove portion with a hole that communicates with the space portion S. Although the rib portion 32a is spiral, any rib that does not extend vertically is included in this category because it can impart a rotational moment to the liquid.

[0057] In the spray nozzle 100 according to this embodiment, the two ridge portions 32a are provided so as not to intersect with each other, but they may intersect with each other. FIG. 6 is a perspective view showing a top of a spray nozzle according to another embodiment. As shown in FIG. 6, a piece 3b of a spray nozzle according to another embodiment has two ridge portions 32a2 formed by cutting out a side wall portion, which intersect with each other. In this top 3b, since there are two ridge portions 32a2, the flow rate of the liquid increases, and the amount of liquid sprayed can be increased. In the top 3b, the two ribs 32a2 intersect with each other, which can cause turbulence. Note that no flow holes are provided in the bottom wall. The other configurations are the same as those of the piece 3 of the spray nozzle 100 according to this embodiment.

[0058] In the spray nozzle 100 according to this embodiment, the bottom wall 31 of the top 3 is provided with a bulge 31a, but this is not essential. Furthermore, when the bulging portion 31a is provided, its shape is not limited to a mountain shape in side view.

[0059] In the spray nozzle 100 according to this embodiment, the bottom wall portion 31 of the piece 3 is provided with the communication holes 31b, but this is not essential. For example, as described above, when there are three or more ridges, the flow rate of the liquid is sufficient, so that the flow holes 31b do not need to be provided.

[0060] The carbonated water producing device 101 according to this embodiment may be provided with a known cooling means for cooling the liquid to be introduced or the stored carbonated water. Furthermore, the carbonated water production device 101 may be provided with a pressure gauge for measuring the internal pressure of the sealed container 4, the carbon dioxide gas inlet means 41, the carbonated water outlet means 42, etc., as appropriate. In addition, in the carbonated water production device 101, a pressure reducing valve or a check valve may be attached to the carbon dioxide gas inflow means 41, the carbonated water outflow means 42, etc. [Industrial Applicability]

[0061] The spray nozzle of the present invention can be used as a device for spraying liquid in a variety of fields. The spray nozzle has a simple structure, yet is capable of spraying liquid in sufficiently atomized form. The carbonated water maker of the present invention can be used as a device for producing carbonated water. The carbonated water maker can produce carbonated water with a high gas volume. [Explanation of symbols]

[0062] 1...Flow pipe section 10. Opening 100···Spray nozzle 101 Carbonated water maker 11 Base 2...Lid part 20...Spray hole 3, 3a, 3b... Frame 31,321 Bottom wall 31a...Bulge 31b...Flow hole 32 Side wall 32a,32a1,32a2...Ring section 4. Airtight container 41 Carbon dioxide gas inlet means 42 Carbonated water outlet means 5. Detection means 6. Safety valve D... Distribution Department D1: Large diameter section D2...Medium diameter part D3: Small diameter section S...Space part

Claims

1. In a spray nozzle for spraying a liquid, a flow pipe portion through which the liquid flows; a lid portion attached to an opening at the tip of the flow pipe portion; a top placed on a base portion provided inside the flow pipe portion; Equipped with A spray hole is provided in the center of the lid, The link is provided with a spirally cut ridge, A spray nozzle in which the liquid is guided spirally along the ridge and sprayed from the spray holes.

2. The piece is a cylindrical piece having a bottom and a side wall and a bottom wall, The rib portion is provided on the side wall portion, 2. The spray nozzle according to claim 1, wherein a space surrounded by said lid portion, said side wall portion and said bottom wall portion communicates with said ridge portion.

3. 3. The spray nozzle according to claim 2, wherein a bulge extending toward the space is provided at the center of the bottom wall.

4. 4. The spray nozzle according to claim 3, wherein a flow hole is provided at the center of the bottom wall portion, passing through the bulging portion in the direction of flow of the liquid.

5. The side wall portion is provided with a plurality of the rib portions, A spray nozzle according to any one of claims 2 to 4, wherein the ridges do not intersect with each other.

6. A sealed container filled with carbon dioxide gas; the spray nozzle according to claim 5 for spraying water into the sealed container; Equipped with A carbonated water production apparatus, wherein the spray pressure of the water in the spray nozzle is 0.3 to 5.0 MPa.

7. 7. The carbonated water producing apparatus according to claim 6, wherein the spray nozzle is disposed so as to spray the water upward within the sealed container.

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