JP2014057915A - Micro-bubble generating nozzle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a micro-bubble generating nozzle for easily executing hand side operation by sending gas such as carbon dioxide and ozone supplied from an external part to a micro-bubble forming place by a gas tube in a hand side tube, and mixing and discharging the gas in a pressure liquid such as hot and cold water by effectively forming the gas as a micro-bubble.SOLUTION: Flanges 10a and 20a are formed in a mutually butted part of bodies 10 and 20, and surface roughness of respective abutting surfaces 15 and 25 of these flanges 10a and 20a is set to 0.2 to 6.3, and a supply hole 17 opening in the abutting surface 15 is formed in the flange 10a on the upstream side body 10 side, and one end of the gas tube 50 housed in the hand side tube is communicated with this supply hole 17, and the gas is supplied from the other end of this gas tube 50.

Description

  The present invention relates to a nozzle that is interposed between a pressure liquid supply unit such as a water faucet and a shower nozzle or a discharge member and generates microbubbles in the liquid discharged from the shower nozzle or the discharge member. It is.

  For example, if bubbles are mixed in water discharged by a faucet or shower nozzle, effects such as enhancing the cleaning effect, stimulating the skin, or preventing water splashing can be obtained. This is well known in Patent Document 1 or Patent Document 2.

  The formation of bubbles proposed in these Patent Documents 1 and 2 is made by forming a negative pressure generating portion in the flow of tap water and introducing outside air into the negative pressure generating portion. The size of the bubble is at most millimeters (hereinafter referred to as millibubble). For example, Patent Document 3 shows that the cleaning effect and the like are further enhanced if the millibubble is made into a micron-sized bubble (hereinafter referred to as a microbubble).

In general, the definition of “microbubble” is variously defined depending on the field, but it is consistent that the diameter does not include 1 mm or more, and those having a diameter of less than 1 μm are called nanobubbles. Bubbles having a diameter between are defined as microbubbles. In the present invention, bubbles defined as described above are referred to as microbubbles, and bubbles having a diameter of 1 mm or more are referred to as microbubbles.

  And when the gas component which comprises this microbubble and microbubble is "carbon dioxide gas", it not only has the blood circulation promotion effect and the body heat-retaining effect, but also has a blood vessel expansion action and a blood viscosity lowering action, Patent Document 4.

JP 2010-7315 A, Abstract JP 2009-274026 A, Summary JP 2009-78140 A, Summary JP 2002-272805, abstract Japanese Patent No. 49999996

  Patent Document 3 proposes a “body care washing water supply device” for the purpose of “care of various parts of the body such as hair washing or massage more efficiently in a shorter time”. "Care cleaning water supply device" is a "washing water supply device that cares for the body using cleaning water in which bubbles are mixed with raw water." In order to mix and dissolve the fine bubbles in the water pipe 12 and raw water, the fine bubble generator installed in the water pipe and the raw water in which the generated fine bubbles are mixed and dissolved are accelerated and injected from the nozzle into the raw water. In order to produce washing water in which microbubbles having a diameter of about 1 to 50 μm are mixed and dissolved, the washing water generating unit 29 installed in the water pipe and the washing water pouring out provided in the water pipe pouring part Faucet and poured wash water Comprises a body wash water received that is received and has a structure that "constitutes.

And, as shown in paragraph 0018 of the document 3, the “fine bubble generator 15 for generating microbubbles having a diameter of about 1 to 50 μm” in Patent Document 3 ... the purified water supplied from the inlet 15a, the vortex pump 39 for sucking the air, the motor 40 for driving the vortex pump 39, and the air discharged from the vortex pump 39 are mixed and stirred with the raw water to obtain the raw water A shearing / stirring unit 41 for dissolving air, a gas-liquid mixing / separating means 42 for separating undissolved gas contained in the air-mixed solution, and an air-dissolved liquid discharged from the means 42 are discharged and decompressed to form fine bubbles. It has a very complicated structure.

  On the other hand, the “blood circulation promoting shower” proposed in Patent Document 4 provides “a blood circulation promoting shower capable of efficiently producing percutaneous absorption of carbon dioxide gas without imposing a burden on the user's heart”. 11, as shown in FIG. 11, “a hot water supply pipe for supplying hot water and a hot water supplied with a single or a plurality of holes in communication with the hot water supply pipe” A shower head provided with a water spray plate for spraying water, a bubble generating unit, and a carbon dioxide supply means that communicates with the bubble generating unit and supplies carbon dioxide, wherein the bubble generating unit is formed of a porous film. It is characterized by having "

  However, in the “blood circulation facilitating shower” of Patent Document 4, “the bubble generating part is provided with a bubble dispersion mechanism made of a porous film”, so that carbon dioxide cannot be microbubbled. It has become.

  For this reason, the applicant has proposed a “bubble generator” in Patent Document 5 in which a gas different from the outside air such as carbon dioxide gas can be microbubbled. As shown in FIG. 9 or 10, the “bubble generator” already proposed by the applicant has an “outside air intake member” (in the case of FIG. 9) or “tube” at the hand of the shower nozzle. In this way, a gas such as carbon dioxide was supplied from the “outside air intake member” or “tube” into the bubble generator.

  However, since these “outside air intake members” or “tubes” are in the vicinity of the hand holding the shower nozzle, it becomes a hindrance when using the shower nozzle, and some device is required.

  Therefore, the present inventors can make a nozzle that can make full use of the advantages that gas such as carbon dioxide gas or ozone has, and the structure for that purpose does not deteriorate usability. As a result of various investigations on how to do this, first of all, it was noticed that the above-mentioned gas could be microbubbled and mixed into hot water from, for example, a hot and cold water mixing tap, producing good results. The invention has been completed.

  That is, the object of the present invention is to facilitate the hand operation by sending a gas such as carbon dioxide gas or ozone supplied from the outside to the microbubble formation place by a gas tube in the hand tube. Another object is to provide a microbubble generating nozzle capable of effectively making gas into microbubbles and mixing them in a pressure liquid such as hot water and discharging them.

In order to solve the above problems, first, the means taken by the invention according to claim 1 will be described with reference numerals used in the description of the embodiments described later.
"The proximal pipe 60 to which the hose 230 from the pressure liquid supply unit is connected, the upstream main body 10 connected to the proximal pipe 60, the downstream main body 20 connected to the upstream main body 10, and the upper and lower bodies 10. A microbubble generating nozzle 100 including a diversion piece 30 that is housed in 10.20 and forms a space 40 in which microbubbles are generated downstream.
The flanges 10a and 20a are formed on the portions of the upper and lower main bodies 10 and 20 that face each other, and the surface roughness of the contact surfaces 15 and 25 of these flanges 10a and 20a is set to 0.2 to 6.3,
A supply hole 17 that opens at the contact surface 15 is formed in the flange 10a on the upstream main body 10 side, and one end of the gas tube 50 housed in the proximal tube 60 is communicated with the supply hole 17, and the gas tube 50 The gas is supplied from the other end of the
The microbubble generating nozzle 100 is characterized in that the gas supplied through the gas tube 50 is supplied into the space 40 from both contact surfaces 15 and 25 so that the gas can be microbubbled. "
It is.

  The microbubble generating nozzle 100 according to claim 1 is sent through a gas tube 50 from a supply device (not shown) into a pressure liquid such as tap water or hot water supplied from a water tap 220 via a hose 230. A gas such as carbon dioxide gas is supplied in the form of microbubbles in a space 40 formed between the upstream main body 10 and the downstream main body 20, and the effect of the microbubbled gas is shown in FIG. 1 is added to pressure liquid such as tap water or hot water discharged from the shower nozzle 210 shown in FIG. 1 or the water discharge member 200 shown in FIG.

  The micro-bubble generating nozzle 100 generally employs the shower nozzle 210 shown in FIGS. 1 and 2 for discharging a pressure liquid such as tap water or hot water. Instead, a simple water discharge member 200 as shown in FIGS. 3 and 4 may be employed. The shower nozzle 210 has a large number of holes for hot water and water to be ejected at the discharge port, and is literally used as a “shower”. The water discharge member 200 directly discharges hot water and water. Yes, used when hot water is supplied to a bathtub or the like.

  The shower nozzle 210 and the water discharge member 200 described above are selectively connected to the attachment portion 23 of the downstream main body 20 among the upstream main body 10 and the downstream main body 20 forming the space 40 for generating microbubbles. However, a hand tube 60 is connected to the connecting portion 13 on the upstream side of the upstream body 10. The “upstream side” refers to the side from which the pressure liquid flows, and is the lower side in FIGS. 1 and 2 and the right side in FIGS.

  Unlike the hose 230 connected to the water faucet 220 or the like, the proximal pipe 60 connects such a hose 230 to the upstream main body 10 constituting the microbubble generating nozzle 100. And this hand tube 60, when using the microbubble generating nozzle 100, when holding the upstream main body 10 or the downstream main body 20 of the microbubble generating nozzle 100, the water discharge member 200 or the shower nozzle 210 by hand, It will literally be at "hand".

  As shown in FIG. 2 and FIG. 3 (b), the proximal pipe 60 communicates the hose 230 with the inside of the upstream main body 10 to send hot water from the faucet 220 or the like into the upstream main body 10. At the same time, the gas tube 50 is accommodated. The upstream end of the gas tube 50 is connected to a connection tool 51 formed on the upstream base 61, and the downstream end is connected to the flange 10 a of the upstream main body 10 via the connection tool 51. The almost entire gas tube 50 is accommodated in the proximal tube 60.

  As a result, a gas such as carbon dioxide gas supplied from an external supply device into the microbubble generating nozzle 100 is supplied to the upstream main body 10 side through the inside of the hand tube 60 by the gas tube 50. There are no protrusions for the gas tube 50 in the side main body 10 or the proximal pipe 60. For this reason, outside of the microbubble generating nozzle 100, there are no protrusions such as the gas tube 50 and its connection tool 51 which are obstructive when the nozzle is operated by hand.

  In the microbubble generating nozzle 100, as shown in FIG. 2 to FIG. 4, flanges 10a and 20a are formed at the portions of the upper and lower main bodies 10 and 20 that face each other, and as shown in FIG. Further, a supply hole 17 that opens at the contact surface 15 is formed in the flange 10a on the upstream main body 10 side, and one end of the gas tube 50 housed in the proximal tube 60 is communicated with the supply hole 17. For this reason, if gas is supplied from the other end of the gas tube 50, this gas is first caused by its own pressure or a negative pressure in the space 40 described later, as indicated by an arrow in FIG. 6 or FIG. It is supplied into the supply hole 17 and tries to enter a gap between the contact surface 15 of the flange 10a of the upstream body 10 and the contact surface 25 of the flange 20a of the downstream body 20.

  Here, since the surface roughness of the contact surfaces 15 and 25 of the flanges 10a and 20a is 0.2 to 6.3, a fine gap is formed between the contact surfaces 15 and 25. ing. Therefore, the gas sent through the gas tube 50 is its own pressure or a negative pressure described later that is generated when the liquid fed to the upstream main body 10 side is fed to the downstream main body 20. As a result, the bubbles are introduced into the bubble generator 100 through a minute gap between the contact surfaces 15 and 25.

  Here, the surface roughness of the contact surface 15 of the upstream main body 10 or the contact surface 25 of the downstream main body 20 must be 0.2 to 6.3, for the following reason. First, if the surface roughness of the abutment surface 15 of the upstream body 10 or the abutment surface 25 of the downstream body 20 is less than 0.2, the gap between the abutment surfaces 15 and 25 is small so that outside air can be introduced. This is not only because there is no, but because the processing to such surface roughness is costly and has little meaning. On the other hand, if the surface roughness of the abutment surfaces 15 and 25 is larger than 6.3, the gap between the abutment surfaces 15 and 25 becomes too large and gas can be easily introduced from the gas tube 50. This is because it causes “liquid leakage” of the bubble generator 100 of the seed.

  The surface roughness should be 0.2 to 6.3 as long as it is at least one of the contact surface 15 of the upstream body 10 and the contact surface 25 of the downstream body 20. The contact surface 15 of the upstream main body 10 and the contact surface 25 of the downstream main body 20 are not necessarily required. However, if the surface roughness of both the contact surface 15 of the upstream main body 10 and the contact surface 25 of the downstream main body 20 is set to 0.2 to 6.3, the generation control of microbubbles described later can be easily performed. It is natural to become.

  The gas introduced into the space 40 of the microbubble generating nozzle 100 from the gap between the contact surfaces 15 and 25 having the surface roughness as described above is the gas remaining in the space 40 or supplied. Since the liquid is dispersed in the liquid, it once becomes a micro bubble with a diameter of millimeter units. This micro bubble is originally in the liquid discharged from the second flow channel 21 of the downstream side 20 as follows. It becomes a microbubble.

  Now, as shown in FIGS. 2 to 4, the microbubble generating nozzle 100 includes an upstream main body 10 connected to the above-described proximal pipe 60, a downstream main body 20 connected to the upstream main body 10, and It is housed in the upper and lower bodies 10 and 20 and has a flow dividing piece 30 that forms a space 40 where microbubbles are generated on the downstream side. In the microbubble generating nozzle 100, the microbubbles are as follows. Occur. First, the liquid fed into the upstream main body 10 is discharged into the first flow path 11 while being diverted by flowing into the respective liquid flow holes 31 of the diversion piece 30.

  Since the first flow path 11 is narrowed toward the downstream side, the liquid discharged into the first flow path 11 is sent toward the downstream side while being compressed. Since the downstream end of the first flow path 11 is opposed to the upstream end of the second flow path 21 formed in the downstream main body 20, the liquid flows from the first flow path 11 to the second flow. It flows into the path 21. Since the second flow path 21 is widened toward the downstream side, the pressure of the liquid is drastically reduced at the downstream end portion thereof. However, as shown in FIG. A space 40 is formed between 10 and the downstream main body 20.

  The space 40 formed between the upstream main body 10 and the downstream main body 20 is formed in a portion where the upper and lower main bodies 10 and 20 face each other, as shown in FIGS. 4, 6, and 7. Supply hole 17 that opens to the flange 10a on the upstream main body 10 side through the contact surface 15 through the contact surfaces 15 and 25 having a surface roughness of 0.2 to 6.3 of the flanges 10a and 20a. Finally communicate with. Therefore, the gas such as carbon dioxide supplied through the gas tube 50 is supplied into the space 40 from both contact surfaces 15 and 25.

  In each of the above stages, the liquid and the gas supplied into the space 40 are not only subjected to various shear stresses but also pressurized and released, so that cavitation occurs particularly in the liquid. It will be. Moreover, each of these forces may cause a flow of a complicated shape in the microbubble generating nozzle 100, so that these forces themselves are not only relatively large, but also the first flow path 11 and the first flow. Since the two channels 21 and the space 40 are hung or released within a very short path, that is, within a short time, the gas component dissolved in the liquid appears as bubbles by cavitation. In doing so, it becomes very fine bubbles, that is, microbubbles.

  According to the inventor's experiment, it is considered that cavitation is generated in the liquid by using the microbubble generating nozzle 100 for the following reason. When this microbubble generating nozzle 100 is used, when the liquid passes through the opening 11a of the first flow path 11 of the upstream body 10, a gas axis (vacuum axis) is formed at the center of the liquid flow by the action of the swirling flow. The On the other hand, when the liquid is discharged from the opening 21a of the downstream main body 20 to the second flow path 21, it is considered that the liquid flows in the central portion by the surrounding liquid wall. Therefore, it is considered that the liquid to be drawn to the gas shaft side and the liquid ejected radially from the opening 21a collide, and the gas on the gas shaft is sheared to generate microbubbles.

  Of course, in each of the above steps, the gas supplied into the space 40 via the gas tube 50 is also mixed with the liquid passing through the microbubble generating nozzle 100 and subjected to various shear stresses. In addition to being pressurized, the pressure is also released, so that the gas supplied into the space 40 via the gas tube 50 is also microbubbled.

  In general, vapor and bubbles generated by cavitation are absorbed into the liquid again within a short time. However, the bubbles generated in the microbubble generating nozzle 100 according to the present invention and the microbubbled gas are Since they are microbubbles called microbubbles, they are not absorbed into the liquid again within a short time due to their surface tension or the like. In other words, in the liquid discharged from the second flow path 21, the microbubbles generated by cavitation and the gas microbubbles supplied through the gas tube 50 remain, and this liquid remains. For example, if it is used as shower water from the shower nozzle 210, it is possible to perform hair washing and body washing with high detergency.

Furthermore, when the gas supplied into the space 40 via the gas tube 50 is carbon dioxide, the microbubble generating nozzle 100 can be applied or applied to the following various fields or devices. .
・ Beauty and beauty, pet washing field
・ Bathroom field (Improvement of washing and heat retention as a micro bubble bath)
・ Nursing care field or nursing facility (improvement in washing and heat retention as a shower)
・ Fishery product cleaning field (detergency is expected)
・ Laundry machine and coin laundry field (Improvement of clothes washability by installing on piping)
・ Agriculture, food factories (promoting the cultivation of agricultural products, sterilization effect can be expected)
・ Provide to research institutes such as universities as microbubble generators ・ Washing shower nozzles at petrol stations (improvement in cleaning performance can be expected)
・ Cosmetics field (cleaning effect can be expected)

  Therefore, in the microbubble generating nozzle 100 according to the first aspect, a gas such as carbon dioxide gas or ozone supplied from the outside is sent to the microbubble formation place by the gas tube 50 in the hand tube 60, so The operation can be facilitated, and the gas can be effectively microbubbled and mixed into a pressure liquid such as hot water to be discharged. The shower nozzle 210, a tap for tap water, a bathroom, It is suitable for water tanks, piping to dishwashers, and watering showers used for gardening.

In order to solve the above-mentioned problem, the means taken by the invention according to claim 2 is similarly:
"The proximal pipe 60 to which the hose 230 from the pressure liquid supply unit is connected, the upstream main body 10 connected to the proximal pipe 60, the downstream main body 20 connected to the upstream main body 10, and the upper and lower bodies 10. A microbubble generating nozzle 100 including a diversion piece 30 that is housed in 10.20 and forms a space 40 in which microbubbles are generated downstream.
Flange 10a, 20a is formed in the part where upper and lower main bodies 10, 20 are abutted with each other, and chamfering 20b toward the flow dividing piece 30 side is provided on at least one of the contact surfaces 15, 25 of these flanges 10a, 20a. Form the
A supply hole 17 that opens at the contact surface 15 is formed in the flange 10a on the upstream main body 10 side, and one end of the gas tube 50 housed in the proximal tube 60 is communicated with the supply hole 17, and the gas tube 50 The gas is supplied from the other end of the
A microbubble generating nozzle 100 characterized in that the gas supplied through the gas tube 50 can be microbubbled by supplying the gas from the chamfer 20b into the space 40 ".
It is.

  The basic configuration of the microbubble generating nozzle 100 according to claim 2 is substantially the same as that of the microbubble generating nozzle 100 according to claim 1, but the upper and lower bodies 10 and 20 are abutted against each other as shown in FIG. The flanges 10a and 20a are formed in the portions, and the chamfers 20b toward the diverting piece 30 are formed on at least one of the contact surfaces 15 and 25 of the flanges 10a and 20a. It is a different point from that.

  For this reason, in the following description, it demonstrates centering on FIG. 7 which shows having formed the chamfer 20b which goes to the flow dividing piece 30 side in at least one of each contact surface 15 * 25 of these flanges 10a * 20a. In other words, other parts, members, and actions are omitted in the description of claim 1 above.

  FIG. 7 shows an example in which a chamfer 20b is formed on the flange 20a of the downstream main body 20. This chamfer 20b is formed by chamfering the outer periphery of the upstream opening of the flange 20a in an inclined manner. . The chamfer 20b is directed toward the flow dividing piece 30. However, the meaning is that the downstream opening of the supply hole 17 formed in the flange 10a on the upstream main body 10 side passes through the chamfer 20b. That is, the space 40 is communicated.

  As a result of the above, the gas supplied to the supply hole 17 via the gas tube 50 in the proximal tube 60 is the same as that in the microbubble generating nozzle 100 of claim 1. The surface roughness 25 can be supplied into the space 40 through the chamfer 20b in a state where the surface roughness does not need to be 0.2 to 6.3. Since the packing 16 is disposed outside the chamfer 20b, that is, on the upper side in FIG. 7, the gas supplied to the supply hole 17 through the gas tube 50 in the proximal tube 60 leaks to the outside. There is almost no.

  Therefore, the microbubble generating nozzle 100 according to claim 2 is also operated by handing the gas such as carbon dioxide and ozone supplied from the outside to the microbubble formation place through the gas tube 50 in the hand tube 60. It is possible to make the gas into microbubbles and mix it in a pressure liquid such as hot water and discharge it. The shower nozzle 210, a faucet for tap water, a bathroom and a water tank Furthermore, it is suitable for plumbing to dishwashers and watering showers used for gardening.

As described above, in the present invention,
"The proximal pipe 60 to which the hose 230 from the pressure liquid supply unit is connected, the upstream main body 10 connected to the proximal pipe 60, the downstream main body 20 connected to the upstream main body 10, and the upper and lower bodies 10. A microbubble generating nozzle 100 including a diversion piece 30 that is housed in 10.20 and forms a space 40 in which microbubbles are generated downstream.
The flanges 10a and 20a are formed on the portions of the upper and lower main bodies 10 and 20 that face each other, and the surface roughness of the contact surfaces 15 and 25 of these flanges 10a and 20a is set to 0.2 to 6.3,
A supply hole 17 that opens at the contact surface 15 is formed in the flange 10a on the upstream main body 10 side, and one end of the gas tube 50 housed in the proximal tube 60 is communicated with the supply hole 17, and the gas tube 50 The gas is supplied from the other end of the
By supplying the gas supplied through the gas tube 50 into the space 40 from both contact surfaces 15 and 25, the gas can be microbubbled. "
Or
"The proximal pipe 60 to which the hose 230 from the pressure liquid supply unit is connected, the upstream main body 10 connected to the proximal pipe 60, the downstream main body 20 connected to the upstream main body 10, and the upper and lower bodies 10. A microbubble generating nozzle 100 including a diversion piece 30 that is housed in 10.20 and forms a space 40 in which microbubbles are generated downstream.
The flanges 10a and 20a are formed on the portions of the upper and lower main bodies 10 and 20 that face each other, and the surface roughness of the contact surfaces 15 and 25 of these flanges 10a and 20a is set to 0.2 to 6.3,
A supply hole 17 that opens at the contact surface 15 is formed in the flange 10a on the upstream main body 10 side, and one end of the gas tube 50 housed in the proximal tube 60 is communicated with the supply hole 17, and the gas tube 50 The gas is supplied from the other end of the
By supplying the gas supplied through the gas tube 50 into the space 40 from both contact surfaces 15 and 25, the gas can be microbubbled. "
There is a feature in the structure, and by this, gas such as carbon dioxide gas and ozone supplied from the outside is sent to the microbubble formation place by the gas tube 50 in the hand tube 60 so that the hand operation is easy. In addition, it is possible to provide the microbubble generating nozzle 100 that can effectively make the gas into microbubbles and mix and discharge the gas into a pressure liquid such as hot water.

It is the microbubble generation nozzle 100 which concerns on this invention, Comprising: It is a front view which shows the example which was connected to the hose 230 from the water tap 220, and employ | adopted the shower nozzle 210 on the discharge side. It is a longitudinal cross-sectional view of the microbubble generation nozzle 100 shown in FIG. The microbubble generation nozzle 100 at the time of employ | adopting the water discharging member 200 is shown, (a) is an enlarged front view, (b) is a longitudinal cross-sectional view. It is the fragmentary sectional view which expanded and showed the downstream part of the microbubble generation nozzle 100 shown to (b) of FIG. It is the fragmentary sectional view which expanded and showed the upstream part of the microbubble generation nozzle 100 shown to (b) of FIG. FIG. 5 shows a microbubble generating nozzle 100 according to claim 1 and is a partially enlarged view of a 1-1 battle section in FIG. 4. FIG. 5 shows a microbubble generating nozzle 100 according to claim 2 and is a partially enlarged view of a 1-1 battle section in FIG. 4. The diversion piece 30 which comprises the microbubble generation nozzle 100 is expanded and shown, (a) is a front view, (b) is a perspective view seen from the top, (c) is a perspective view seen from the bottom. It is. It is a general | schematic route figure which shows the technique of patent document 5. FIG. FIG. 10 is another schematic route diagram showing the technique of Patent Document 5. It is a general | schematic route figure which shows the technique of patent document 4. FIG.

  Next, the invention according to each claim configured as described above will be described with reference to the microbubble generating nozzle 100 according to the embodiment shown in the drawings. The microbubble generating nozzle 100 according to the embodiment of claim 1 FIG. 6 shows a microbubble generating nozzle 100 according to an embodiment of the present invention as shown in FIG. The other parts of the microbubble generating nozzle 100 according to the present invention will be described with the same reference numerals in FIGS.

  As shown in FIGS. 1 to 8, the microbubble generating nozzle 100 according to this embodiment includes a hand tube 60 to which a hose 230 from a pressure liquid supply unit such as a water tap 220 is connected, and the hand tube 60. The gas tube 50 accommodated in the interior, the upstream main body 10 connected to the proximal pipe 60, the downstream main body 20 connected to the upstream main body 10, and the upper and lower main bodies 10 and 20 are accommodated. It is provided with a diversion piece 30 that forms a space 40 in which microbubbles are generated on the downstream side.

  The microbubble generating nozzle 100 is a gas such as carbon dioxide gas sent from a supply device (not shown) through a gas tube 50 into a pressure liquid such as tap water or hot water supplied from a water tap 220 via a hose 230. Is supplied from the space 40 formed between the upstream main body 10 and the downstream main body 20 as microbubbles when passing through the opening 21a of the second flow path 21 of the downstream main body 20. The effect of the microbubbled gas is added to pressure liquid such as tap water or hot water discharged from the shower nozzle 210 shown in FIG. 1 or the water discharge member 200 shown in FIG.

  The shower nozzle 210 and the water discharge member 200 described above are selectively connected to the attachment portion 23 of the downstream main body 20 among the upstream main body 10 and the downstream main body 20 forming the space 40 for generating microbubbles. In addition, a hand tube 60 is connected to the connecting portion 13 which is on the upstream side of the upstream main body 10. Unlike the hose 230 connected to the water faucet 220 or the like, the proximal pipe 60 connects such a hose 230 to the upstream main body 10 constituting the microbubble generating nozzle 100. And this hand tube 60, when using the microbubble generating nozzle 100, when holding the upstream main body 10 or the downstream main body 20 of the microbubble generating nozzle 100, the water discharge member 200 or the shower nozzle 210 by hand, It is literally located at "hand".

  As shown in FIG. 2 and FIG. 3 (b), the hand pipe 60 communicates the hose 230 with the inside of the upstream main body 10 to allow hot water from the faucet 220 etc. to enter the upstream main body 10. At the same time as sending, the gas tube 50 is accommodated. The upstream end of the gas tube 50 is connected to a connection tool 51 formed on the upstream base 61, and the downstream end is connected to the flange 10 a of the upstream main body 10 via the connection tool 51. The gas tube 50 is almost entirely housed in the proximal tube 60.

  In particular, in the microbubble generating nozzle 100 according to the present invention, flanges 10a and 20a are formed in the portions of the upstream main body 10 and the downstream main body 20 that are abutted with each other, as shown in FIG. . These flanges 10a and 20a allow each upstream side main body 10 and downstream side main body 20 to meet each other in a liquid-tight manner while allowing sufficient passage of liquid in each first passage 11 and second passage 21. In addition to being able to do so, the connection of the proximal tube 60 to the upstream main body 10 and the connection of the gas tube 50 accommodated in the proximal tube 60 to the upstream main body 10 are enabled.

  In addition, the connection to the upstream main body 10 at one end of the gas tube 50 is performed by screwing the connection tool 51 into the connection hole 17a formed on the upstream side of the supply hole 17, as shown in FIG. This is done by connecting the gas tube 50 to the connection hole 17a. As shown in FIG. 5, the other end of the gas tube 50 is made with respect to an upstream base 61 attached to the upstream end of the proximal tube 60 using a fastener 63.

  As a result, a gas such as carbon dioxide gas supplied from an external supply device into the microbubble generating nozzle 100 is supplied to the upstream main body 10 side through the inside of the hand tube 60 by the gas tube 50. There are no protrusions for the gas tube 50 in the side main body 10 or the proximal pipe 60. For this reason, outside of the microbubble generating nozzle 100, there are no protrusions such as the gas tube 50 and its connection tool 51 which are obstructive when the nozzle is operated by hand.

  In FIG. 1, a microbubble generating nozzle 100 according to the present invention is connected to a shower nozzle 210 via a downstream main body 20, and the upstream main body 10 of the microbubble generating nozzle 100 is connected to a proximal pipe 60. The state where this proximal pipe 60 is connected to one end of the hose 230 is shown. Of course, the other end of the hose 230 is connected to the water tap 220.

  As shown in FIGS. 2 to 7, the main part of the microbubble generating nozzle 100 according to the present embodiment includes an upstream main body 10 provided with a first flow path 11 that narrows toward the downstream side, and a first flow. The diversion piece 30 accommodated in the passage 11 and provided with a large number of liquid passage holes 31 and the downstream main body 20 provided with the second flow path 21 attached to the upstream main body 10 and extending toward the downstream side. It is composed. In addition, as shown in FIG. 4, the microbubble generating nozzle 100 has the downstream end portion of the first flow path 11 opposed to the upstream end portion of the second flow path 21.

  The upstream side main body 10 and the downstream side main body 20 are connected to each other by their connection portions 13 and attachment portions 23, and at the connection portions, packing 16 is interposed to prevent liquid leakage. In the microbubble generating nozzle 100 of the present embodiment, when the upstream main body 10 and the downstream main body 20 are connected to each other, as shown in FIG. 4, between the upstream main body 10 and the downstream main body 20. A space 40 is formed.

  As shown in FIGS. 2, 3 (b), and 4, this space 40 is, of course, between the downstream end of the upstream main body 10 and the upstream end of the downstream main body 20. The upstream main body 10 and the downstream main body 20 communicate with each other through the openings 11a and 21a. The space 40 leads from the outer periphery of the upstream main body 10 to a slight gap between the mounting screw 14 and the mounting screw 24 that screw the upstream main body 10 and the downstream main body 20. This also leads to a gap between the contact surface 15 of the main body 10 and the contact surface 25 of the downstream main body 20. The space 40 is prevented from communicating with the outside by two packings 16 interposed between the upstream main body 10 and the downstream main body 20.

  Therefore, as shown in FIG. 6, the space 40 has a surface roughness of 0.2 to 6.3 of the flanges 10a and 20a formed at the portions where the upper and lower main bodies 10 and 20 face each other. It leads to the supply hole 17 from between the contact surfaces 15 and 25 (in the case of claim 1), or leads to the supply hole 17 from a chamfer 20b formed on at least one of the contact surfaces 15 and 25 of the flanges 10a and 20a. (In the case of claim 2).

  The size of the opening 11a located at the downstream end of the first flow path 11 formed in the upstream main body 10 is the size of the opening located at the upstream end of the second flow path 21 formed in the downstream main body 20. It is smaller than 21a.

  A placement step 12 is formed in a portion of the upstream main body 10 located at the opening end of the first flow path 11. A shunt piece 30 is accommodated and placed on the placement step 12. It is. As shown in FIG. 8A, the diversion piece 30 has a large number of liquid passage holes 31, and these liquid passage holes 31 have their axis centered at the microbubble generating nozzle 100. Inclined against that. Further, on the upper and lower sides of the diversion piece 30, rectifying protrusions 32 are formed so as to protrude, and the side surfaces of the rectifying protrusions 32 are inclined. This inclined state is assumed to be close to the inclined state of the inner surface of the first flow path 11, so that a staying portion is not formed largely in the liquid flow flowing through the first flow path 11. This inclined state is steep for the lower rectifying protrusion 32 in FIG. 5 and is gentle for the upper rectifying protrusion 32.

In the microbubble generating nozzle 100 of the present embodiment, as described above, the packing 16 for preventing liquid leakage is interposed between the contact surfaces 15 and 25. The packing 16 in the present embodiment has a round cross section, but may be implemented with an inverted U-shaped cross section. The packing 16 having an inverted U-shaped cross section easily allows the introduction of outside air from the gap between the contact surfaces 15 and 25, and conversely prevents liquid leakage due to liquid pressure from the inside of the microbubble generating nozzle 100. Can be made easier.

DESCRIPTION OF SYMBOLS 100 Bubble generator 10 Upstream side main body 10a Flange 11 1st flow path 11a Opening 12 Mounting step part 13 Connection part 14 Mounting screw 15 Contact surface 16 Packing 20 Downstream side main body 20a Flange 20b Chamfering 21 2nd flow path 21a Opening 23 Attachment portion 24 Attachment screw 25 Abutment surface 30 Dividing piece 31 Fluid passage hole 32 Rectification protrusion 40 Space 50 Gas tube 51 Connector 60 Hand pipe 61 Upstream base 62 Downstream base 63 Fastener 200 Discharge member 210 Shower nozzle 220 Water faucet 230 hose

Claims (2)

A hand pipe to which a hose from the pressure liquid supply unit is connected, an upstream body connected to the hand pipe, a downstream body connected to the upstream body, and the upper and lower bodies are accommodated in the downstream body. A micro-bubble generating nozzle provided with a flow dividing frame that forms a space in which micro-bubbles are generated,
Forming flanges in the parts of the upper and lower bodies that face each other, the surface roughness of each contact surface of these flanges is 0.2 to 6.3,
A supply hole that opens at the abutment surface is formed in the flange on the upstream body side, and one end of the gas tube stored in the proximal tube is communicated with the supply hole, and gas is supplied from the other end of the gas tube. To supply
A microbubble generating nozzle, characterized in that the gas supplied through the gas tube can be microbubbled by supplying the gas from both contact surfaces into the space. A hand pipe to which a hose from the pressure liquid supply unit is connected, an upstream body connected to the hand pipe, a downstream body connected to the upstream body, and the upper and lower bodies are accommodated in the downstream body. A micro-bubble generating nozzle provided with a flow dividing frame that forms a space in which micro-bubbles are generated,
Forming flanges on the parts of the upper and lower bodies that face each other, forming a chamfer toward the diversion piece side on at least one of the contact surfaces of these flanges,
A supply hole that opens at the abutment surface is formed in the flange on the upstream body side, and one end of the gas tube stored in the proximal tube is communicated with the supply hole, and gas is supplied from the other end of the gas tube. To supply
A microbubble generating nozzle, characterized in that the gas supplied through the gas tube can be microbubbled by supplying the gas into the space from the chamfer.

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