JP2006212098A - Hot carbonated water preparation apparatus and method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot carbonated water preparation apparatus and method capable of preparing a carbonated spring having high-concentration carbon dioxide gas and allowing a bather to appreciate superior effects. <P>SOLUTION: This hot carbonated water preparation apparatus 100 prepares the hot carbonated water with dissolved carbon dioxide gas formed by mixing hot water with the carbon dioxide gas using a mixing device 102. The mixing device 102 is provided with a hot water introduction part 3 introducing the hot water, a carbon dioxide gas introduction part 14 mixing the carbon dioxide gas to the hot water to be introduced, a fine bubble generation part 2 generating multiple fine bubbles from the mixed carbon dioxide gas, and an outlet 91 for emitting the hot carbonated water dissolved with the generated multiple fine bubbles. The fine bubble generation part 2 is provided with a narrowed part 10 for narrowing a flow cross section and a widened part 11 increasing the flow cross section in the flowing direction of the hot carbonated water. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a carbonated hot water generating device that generates hot carbonated water in which carbon dioxide gas is dissolved by mixing warm water and carbon dioxide gas using a mixing device, and a carbonated hot water generating method using the device.

  Carbon dioxide gas contained in the carbonate spring exhibits various effects such as a vasodilatory effect, an anti-inflammatory effect, and an action of further increasing blood by being absorbed through the skin. In addition, the respiration of the cells is activated by the gas exchange promoting action and the metabolism is promoted, so there are not only medical effects but also beauty effects such as diet.

Therefore, in order to easily generate a carbonated spring having such an excellent effect at home, Patent Document 1 or Patent Document 2 discloses a carbonated hot water generating apparatus that disperses carbon dioxide gas in warm water using a static mixer, and the same generation. A method is disclosed.
Japanese Patent Publication No.7-1114790 Japanese Patent Publication No.7-1114790

  However, in the apparatus and method using the static mixer disclosed in Patent Documents 1 and 2 above, it is difficult to realize a concentration of about 1000 ppm described in these Patent Documents, and it is difficult to realize a higher concentration. there were. For this reason, it cannot be said that the effect of carbonated spring is fully enjoyed, and there is room for improvement.

  The present invention has been made in view of such a technical background, and generates hot carbonated water for enabling the generation of a carbonated spring that has a high concentration of carbon dioxide gas and can enjoy excellent effects. It is an object to provide an apparatus and a generation method thereof.

  The above-mentioned problem is a hot carbonated water generating device that generates hot carbonated water in which carbon dioxide gas is dissolved by mixing warm water and carbon dioxide using a mixing device, wherein the mixing device introduces hot water to introduce warm water A carbon dioxide gas introduction unit that mixes carbon dioxide gas into the hot water to be introduced, a microbubble generation unit that generates a large number of microbubbles from the mixed carbon dioxide gas, and a carbonated hot water in which the generated many microbubbles are dissolved A discharge port for discharging, and the micro-bubble generating unit has a throttle unit that narrows a flow cross-sectional area, and a divergent part whose flow cross-sectional area increases in a flow direction of the carbonated hot water. Solved by the device.

  The micro-bubble generating part has a constricted part that narrows the flow cross-sectional area and a divergent part whose flow cross-sectional area increases in the flow direction of hot carbonated water, so that a pressure difference is generated in the flow direction of hot carbonated water. A large number of microbubbles are generated from the mixed carbon dioxide gas by generating a shock wave.

  More preferably, the microbubble generator has a conical shape and expands in the direction of flow of carbon dioxide mixed hot water.

  Furthermore, from the viewpoint of energy saving, it is desirable that the opening angle of the microbubble generating unit is narrow (the pressure of the liquid to be introduced can be reduced), and the opening angle of the microbubble generating unit is preferably less than 40 degrees, , 30 degrees or less, or even 20 degrees or less. In an embodiment described later, the opening angle of the microbubble generator is 10 degrees or less, specifically 6 degrees.

  According to the invention described in the preceding paragraph (1), as a mixing device, a venturi having a narrowed portion in which the microbubble generating portion narrows the flow cross-sectional area and a divergent portion in which the flow cross-sectional area increases in the flow direction of the carbonated hot water. Because it is configured to be similar to a tube, it generates a very small carbon dioxide bubble called a microbubble by creating a shock wave by creating a pressure difference in the flow direction of carbonated hot water. Can do. Since these microbubbles have a large body surface area and high water solubility, the dissolution rate per unit volume is larger than that of large bubbles. For this reason, the produced | generated microbubble of the carbon dioxide gas melt | dissolves rapidly in warm water, and can produce | generate carbon dioxide warm water with a high carbon dioxide gas concentration.

  According to the invention described in the preceding item (2), the microbubble generating part having a conical shape and expanding in the flow direction of the carbon dioxide mixed hot water is provided.

  According to the invention described in the preceding item (3), if the opening angle is large, flow separation occurs in the vicinity of the discharge port, the resistance to the flow increases, and it is necessary to increase the pressure of the hot water to be introduced accordingly. The extra power is used for that amount, but by making the opening angle less than 40 degrees, it is possible to achieve excellent energy saving.

  According to the invention described in the preceding item (4), since the carbon dioxide introduction part introduces carbon dioxide in the flow direction of the carbonated hot water in the fine bubble generation part, the fine bubbles are generated more effectively. Can be made.

  According to the invention described in the preceding item (5), hot carbonated water having a high carbon dioxide gas concentration can be generated.

  According to the invention described in the preceding item (6), since carbonated hot water is circulated and used, it is possible to efficiently generate carbonated water without waste.

  An embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a schematic configuration of a hot carbonated water generation system using a hot carbonated water generator according to an embodiment of the present invention.

  In FIG. 1, 100 is a carbonated hot water production | generation apparatus, 200 is a pump, 300 is a bathtub.

  The carbonic acid hot water generator 100 includes a carbon dioxide gas source 101 for generating carbon dioxide gas, and a mixing device 102 for mixing the carbon dioxide gas generated from the carbon dioxide gas source 101 with hot water.

  The carbon dioxide source 101 may be any one that can generate carbon dioxide and supply it to the hot water device, and its configuration is not particularly limited. For example, a carbon dioxide gas cylinder or a mixed chemical such as baking soda is contained. Then, a type that generates carbon dioxide gas by reacting with a medium such as water can be mentioned. The mixing device 102 will be described later.

  The pump 200 sucks up the hot water 301 in the bathtub 300 with the suction pipe 403 and circulates and supplies the hot water 301 in the bathtub 300 to the mixing apparatus 102 through the hot water introduction pipe 401. It is supposed that hot carbonated water can be generated continuously without waste.

  FIG. 2 is a schematic view of the mixing device 102. The mixing apparatus 102 includes a nozzle body 1 and a divergent nozzle section 2 as a microbubble generating section connected to the nozzle body 1 so as to be in fluid communication. The nozzle body 1 has a substantially cylindrical outer shape, and the space surrounded by the inner wall of the nozzle body 1 also has a cylindrical shape.

  The front end side of the nozzle body 1 has an opening shape and is connected to the divergent nozzle 2. The base end side of the nozzle body 1 is thick, and a hot water introduction port 3 for introducing warm water is formed on the side wall of the thick portion, and one end of the hot water introduction pipe 401 is connected. An insertion hole 6 through which the carbon dioxide gas introduction pipe 5 for introducing the carbon dioxide gas generated from the carbon dioxide gas source 101 is received and inserted is formed through the upper wall of the thick wall portion, and the support plate 7 is fixedly attached. Yes.

  The divergent nozzle 2 is a nozzle that gradually increases after the cross-sectional area first decreases in the flow direction of hot water, and has a shape similar to a Venturi tube. The divergent nozzle 2 includes a base end portion 8 that is connected to an opening on the tip end side of the nozzle body 1 so as to be in fluid communication, and a tip end portion 9 that is formed with a discharge port 91 that discharges hot carbonated water in which carbon dioxide gas is dissolved. have.

  At the base end portion 8 of the divergent nozzle 2, a constricted portion with a narrowed flow cross-sectional area is formed. When the throat 10 formed by the constricted portion is passed, the inner wall is continuously expanded in diameter, and the throat 10 The space 11 surrounded by the inner wall thereafter has a substantially conical shape and forms a divergent portion. In the illustrated example, the throttle portion of the base end portion 8 of the divergent nozzle 2 is formed on the R surface, but it may be an inclined surface that is linear when viewed from the side (sectional view).

  In the illustrated example, the substantially conical space 11 has an expansion angle (opening angle) θ of 6 degrees in a side view. The divergence angle θ is not limited to that shown in the figure. For example, in a preferable range, the divergence angle θ is less than 40 degrees. When the spread angle θ is large, flow separation occurs in the vicinity of the discharge port 91, and the resistance to the flow increases. Therefore, it is necessary to increase the pressure at the inlet of the nozzle, and extra power is used accordingly. By narrowing the spread angle θ, it is possible to provide a nozzle that is excellent in energy saving.

  In the illustrated embodiment, the inner wall of the space 11 surrounded by the inner wall of the divergent nozzle 2 has a linear shape (the space is a conical shape) when viewed from the side (cross-sectional view). A curved surface may be formed.

  The other end of the hot water introduction pipe 401 connected to the hot water introduction port 3 of the nozzle body 1 is connected to the pump 200 that sucks up the hot water 301 from the bathtub 300 which is a hot water supply source. Is introduced from the hot water inlet 3 through the hot water inlet pipe 401. The distal end side of the divergent nozzle 2 is communicated with the bathtub 300 through the hot water outlet tube 402, and the generated carbonated hot water is discharged into the bathtub 300. The hot water in the bathtub 300 is circulated and used as hot water introduced into the mixing device 102 from the hot water inlet 3.

  A carbon dioxide gas introduction pipe 5 for introducing carbon dioxide gas is a 1/8 inch pipe shown in the figure, which penetrates the bottom wall of the nozzle body 1 and is parallel to the length direction of the nozzle body 1 (the flow direction of hot water). It is extended. Further, the carbon dioxide introduction pipe 5 extends on an imaginary axis 13 passing through the throat 10, and the carbon dioxide introduction inlet 14 at the tip of the carbon dioxide introduction pipe 5 is in the opening of the base end portion 8 of the divergent nozzle 2. I'm here. The base end side of the carbon dioxide gas introduction pipe 5 is connected to the carbon dioxide gas source 101 and releases pressurized carbon dioxide gas from the carbon dioxide gas introduction pipe 5.

  The carbon dioxide gas may be supplied by naturally sucking the carbon dioxide gas by the action of the hot water introduced, or the carbon dioxide gas is forced by a carbon dioxide gas introduction section including a compressor independent of the hot water introduction. It may be introduced. In the case of forced introduction, the carbon dioxide gas ratio in the hot water can be increased as compared with natural suction, and the carbon dioxide gas ratio can be arbitrarily set or adjusted. It is considered that the flow rate ratio between the hot water and carbon dioxide gas to be introduced can be increased up to about 20%, for example. It is also possible to control the diameter of the generated microbubbles by controlling the flow rate ratio.

  The base end portion 8 and the tip end portion 9 of the divergent nozzle 2 are provided with plate-like proximal end side flanges 15 and distal end side flanges 16, respectively. The divergent nozzle 2 and the flanges 15 and 16 are connected between the flanges. The connecting rod 17 is integrated. The proximal flange 15 is formed with a receiving portion for receiving the distal end portion of the nozzle body 1. The distal end portion of the nozzle body 1 is received in the receiving portion and welded together to be integrated. The distal end side flange 16 extends further in the surface direction than the proximal end side flange 15, and a screw hole is formed in the extended portion, and is connected to a predetermined part in the bathroom using a screw (not shown). Is configured to do.

  In the mixing apparatus 102 configured as described above, hot water in the bathtub 300 is introduced from the hot water inlet 3 by the pump 200, and the carbon dioxide generated in the carbon dioxide source 101 is converted into carbon dioxide at the tip of the carbon dioxide inlet pipe 5. When introduced from the inlet 14, a large number of carbon dioxide gas microbubbles are generated in the space 11 beyond the throat 10 of the divergent nozzle 2, and the generated microbubbles are dissolved in the hot water while being discharged from the discharge port 91 of the tip 9. It is discharged into the bathtub 300 through the outlet pipe 402.

  The throat 10 is formed in a constricted portion with a reduced flow cross-sectional area. When the throat 10 passes through the throat 10, the flow cross-sectional area increases in the flow direction of the carbon dioxide mixed hot water. Generates a shock wave. For this reason, many microbubbles of the produced carbon dioxide gas are extremely fine such that the average diameter called microbubbles is 10 μm or less. For this reason, the surface area per unit volume of the microbubbles becomes large, the water solubility increases, and the dissolution rate per unit volume increases. As a result, the generated microbubbles are quickly dissolved in the hot water in the space 11 of the mixing apparatus 102 and further in the hot water in the bathtub 300, and the carbon dioxide concentration in the hot water is increased to, for example, 1000 ppm or more, preferably 1200 ppm or more. A carbon dioxide spring with a high carbon dioxide concentration can be realized.

  Moreover, the microbubble which remained without melt | dissolving with the hot water 301 in the bathtub 300 circulates through the warm water without cracking on the surface of the hot water, and maintains the carbon dioxide concentration of the hot water in the bathtub at a high concentration for a long time.

  Moreover, in this embodiment, since the hot water in the bathtub 300 is circulated and used, the generated microbubbles are further dissolved in the hot water having a high carbon dioxide gas concentration, and the carbon dioxide gas concentration is further increased. be able to.

  In the mixing device 102 shown in FIG. 2, the nozzle body 1 and the divergent nozzle 2 are configured as separate members, but may be configured as a single integrated member. In the illustrated example, the constituent member of the nozzle body 1 is made of metal (stainless steel), and the constituent member of the divergent nozzle 2 is made of plastic (made of acrylic resin), but the material of the nozzle body 1 and the divergent nozzle 2 is limited to these. However, it can be suitably adopted from an appropriate metal or plastic. The spatial orientation of the nozzle body 1 and the divergent nozzle 2 is the vertical direction in the illustrated one, but these orientations are not limited to this, and may be extended in the horizontal direction, for example.

  FIG. 3 shows another embodiment of the present invention. In this embodiment, the hot water in the bathtub 300 is not circulated and used, but the hot water is supplied from the water heater 500 to the mixing device 102 via the hot water introduction pipe 401. The configurations of the carbon dioxide gas source 101, the mixing device 102, and the carbonated hot water outlet tube 402 are the same as those shown in FIG.

  Although not shown, in the hot water circulation system of FIG. 1, the bathtub 300 itself has a pump function, and the hot water heated in the bathtub is supplied to the mixing device 12 without using the external pump 200. Also good.

  Alternatively, a shower nozzle may be attached to the tip of the carbonated hot water outlet tube 402 so that the carbonated hot water is ejected from the shower nozzle.

  Using the apparatus of the embodiment shown in FIGS. 1 and 2, a test for dissolving carbon dioxide gas in warm water was performed.

  First, 200 liters of 40 ° C. warm water was placed in the bathtub 300, and this warm water was supplied to the mixing apparatus 102 through the warm water suction pipe 403, the pump 200, and the warm water introduction pipe 401 at a rate of 8 liters / minute and circulated.

  On the other hand, carbon dioxide generated from the carbon dioxide source 101 was introduced into the mixing device 102 and mixed with warm water. And the high concentration carbonated hot water obtained by this was returned to the bathtub 300 through the outlet tube 402. FIG.

  When hot water was circulated for 30 minutes by this method, the carbon dioxide gas concentration in the hot water in the bathtub 300 was 1200 ppm.

  Therefore, it has been confirmed that the carbonated hot water generating apparatus according to this embodiment can realize a carbonated spring having a very high carbon dioxide gas concentration.

It is a schematic block diagram of the system using the carbonated hot water production | generation apparatus which concerns on one Embodiment of this invention. It is a schematic block diagram of the mixing apparatus used for the carbonated hot water production | generation apparatus of FIG. It is a schematic block diagram of the other system using the carbonated hot water production | generation apparatus which concerns on one Embodiment of this invention.

Explanation of symbols

1 Nozzle body 2 Suehiro nozzle (microbubble generator)
3 Hot water inlet 5 Carbon dioxide gas inlet 8 Base end 9 Tip (discharge port)
10 Throat (throttle part)
DESCRIPTION OF SYMBOLS 11 Space 14 Carbon dioxide introduction port 101 Carbon dioxide source 102 Mixing apparatus 100 Carbonated water production apparatus 200 Pump 300 Bathtub 401 Carbon dioxide introduction pipe 402 Carbon dioxide extraction pipe

Claims (6)

A carbonated hot water generator that generates hot carbonated water in which carbon dioxide is dissolved by mixing warm water and carbon dioxide using a mixing device,
The mixing device includes:
A hot water introduction section for introducing hot water, a carbon dioxide introduction section for mixing carbon dioxide into the introduced hot water, a micro bubble generation section for generating a large number of micro bubbles from the mixed carbon dioxide, and a large number of generated micro bubbles And a discharge port for discharging the carbonated hot water dissolved therein,
The said micro bubble production | generation part has a throttle part which narrows a flow cross-sectional area, and a divergent part which a flow cross-sectional area increases in the flow direction of carbonated hot water, The carbonated hot water production | generation apparatus characterized by the above-mentioned.   3. The carbonated hot water generating device according to claim 1, wherein the microbubble generating unit has a conical shape and expands in diameter in a flow direction of the carbonated hot water.   The carbonated hot water generator according to claim 2, wherein the opening angle of the microbubble generator is less than 40 degrees.   The carbon dioxide hot water generating device according to any one of claims 1 to 3, wherein the carbon dioxide gas introducing unit introduces carbon dioxide in a flow direction of the carbonated hot water in the microbubble generating unit.   A carbonated hot water generating method for generating carbonated warm water in which carbon dioxide gas is dissolved, using the carbonated warm water generating device according to claim 1. The method for producing hot carbonated water according to claim 5, wherein the hot carbonated water produced by the mixing device is circulated and used as the hot water introduced into the mixing device.

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