WO2021065947A1 - Beverage dispensing nozzle - Google Patents

Beverage dispensing nozzle Download PDF

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Publication number
WO2021065947A1
WO2021065947A1 PCT/JP2020/037007 JP2020037007W WO2021065947A1 WO 2021065947 A1 WO2021065947 A1 WO 2021065947A1 JP 2020037007 W JP2020037007 W JP 2020037007W WO 2021065947 A1 WO2021065947 A1 WO 2021065947A1
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WO
WIPO (PCT)
Prior art keywords
resistor
carbonated water
tubular body
wall surface
supply nozzle
Prior art date
Application number
PCT/JP2020/037007
Other languages
French (fr)
Japanese (ja)
Inventor
俊祐 強瀬
Original Assignee
富士電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 富士電機株式会社 filed Critical 富士電機株式会社
Priority to CN202080059686.5A priority Critical patent/CN114341051A/en
Publication of WO2021065947A1 publication Critical patent/WO2021065947A1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67D—DISPENSING, DELIVERING OR TRANSFERRING LIQUIDS, NOT OTHERWISE PROVIDED FOR
    • B67D1/00—Apparatus or devices for dispensing beverages on draught
    • B67D1/08—Details

Definitions

  • the present invention relates to a beverage supply nozzle in a beverage supply device such as a beverage dispenser and a cup-type vending machine, and particularly to a beverage supply nozzle that discharges carbonated water generated inside the beverage supply device.
  • a beverage dispenser that sells a mixture of one syrup selected from a plurality of different types of syrup (concentrate) and diluted water such as carbonated water and cold water
  • diluted water such as carbonated water and cold water
  • carbonated water and cold water cold water and carbon dioxide gas are contained inside the beverage dispenser.
  • a carbonator that produces carbonated water by mixing the above, and the carbonated water produced by this carbonator is configured to be poured out from a beverage supply nozzle into a beverage container.
  • FIG. 8 is a schematic view showing a flow path system to which the beverage supply nozzle is applied and a cross section of the beverage nozzle.
  • the conventional beverage supply nozzle 100 includes a hollow tubular body 101 and a resistor 102 inserted inside the tubular body 101, and the tubular body 101 and the resistor 102 are made of synthetic resin. It becomes a molded product of.
  • a carbonated water introduction member 103 having a function of a lid member is attached to the upper end of the tubular body 101, while the lower end is formed as a discharge port 104.
  • a cold water introduction path 105 is formed so as to project in the outer diameter direction, and a net 106 as a filter member is arranged inside.
  • the resistor 102 is formed as a solid polygonal column having a polygonal columnar body having a polygonal cross section (for example, a dodecagon) and a head projecting in a conical shape.
  • the resistor 102 is inserted into the hollow portion of the tubular body 101 so that each corner of the polygonal column is in contact with the inner wall surface of the tubular body 101, whereby the flat surface portion of the resistor 102 of the polygonal column and the tubular body 101 A gap (pressure / depressurizing portion) is formed between the cylindrical inner wall surface and the inner wall surface. In this way, a plurality of gaps as the pressure reducing portion are formed in the circumferential direction of the cross-sectional circle.
  • the carbonated water introduction member 103 is configured to supply carbonated water generated by mixing cold water and carbon dioxide gas by a carbonator 107 via a solenoid valve V1, and the cold water introduction path 105 is supplied from a city water supply.
  • the tap water is cooled through the cooling water tank, and the cold water is supplied via the solenoid valve V2.
  • the solenoid valve V1 is excited at a predetermined timing, and carbon dioxide generated by mixing cold water and carbon dioxide gas by the carbonator 107 is generated. Water is pumped to the carbonated water introduction member 103.
  • the carbonated water pumped to the carbonated water introduction member 103 is evenly dispersed along the conical head of the resistor 102 and then formed between the flat surface portion of the resistor 102 and the inner wall surface of the tubular body 101. It passes through the gap and is discharged from the discharge port 104.
  • the solenoid valve V2 When the non-carbonated beverage selection button provided on the operation panel of the beverage dispenser is pressed, the solenoid valve V2 is excited at a predetermined timing, and cold water is excited from the discharge port 104 of the tubular body 101 via the cold water introduction path 105. Is discharged (for example, Patent Document 1).
  • the carbonated water pumped to the carbonated water introduction member 103 has a gap formed between the flat surface portion of the polygonal column of the resistor 102 and the inner wall surface of the tubular body 101. Since the pressure is reduced when passing through the water, it is possible to prevent a decrease in gas volume due to the separation of carbon dioxide gas.
  • the head of the resistor 102 is formed in a conical shape, so that the carbonated water is a resistor. When it collides with the head of 102, it disperses around without generating a vortex and is guided to the gap (pressure reducing part), so that the separation of carbon dioxide gas generated by the generation of the vortex can be suppressed. Are better.
  • the passing speed is proportional to the discharging time of the carbonated water discharged from the beverage supply nozzle 100, and as the passing speed decreases, the discharging time of discharging a predetermined amount of carbonated water required for sale from the beverage supply nozzle 100 becomes longer.
  • the above-mentioned resistor is divided in the radial direction, and a double structure composed of an inner resistor formed as a solid polygonal column and an outer resistor formed by forming a hollow tubular outer wall in a polygonal shape.
  • the gap (pressure reducing part) becomes smaller by forming the resistor into a double structure divided in the radial direction, and the carbonated water passing through the gap (pressure reducing part).
  • the passing speed decreases, the number of gaps (pressure reducing part) increases, so that the amount of carbonated water passing per unit time can be increased, so that the desired amount of carbonated water is discharged within a predetermined discharge time. It is possible to make it.
  • the inner resistor, the outer resistor into which this inner resistor is inserted, and the tubular body into which this outer resistor is inserted have a diameter from the upstream side where carbonated water is introduced toward the downstream side where carbonated water is discharged. Has the advantage that it can be assembled in a nested manner by having a gradient that gradually shrinks.
  • the carbonated water pumped to the carbonated water introduction member 103 shown in FIG. 8 acts to inflate the tubular body 101 and to press the resistor 102 downward.
  • the resistor is made of synthetic resin, the frictional resistance between the two is small, which may cause a problem that the resistor moves downward with respect to the tubular body.
  • the downward movement of the resistor is depressurized if the gradient range (vertical dimension) provided on the inner wall of the tubular body is defined to match the vertical dimension of the outer wall of the outer resistor.
  • the area of the part will be reduced, and the downward movement of the resistor means that the introduction path of carbonated water will expand, and when the introduction path of carbonated water expands, the pressure of carbonated water will decrease and the gas volume will decrease. Causes a decrease in.
  • the carbon dioxide gas is separated by the collision of the carbonated water with the surface (concave and convex surface) of the synthetic resin material.
  • the present invention has been made in view of the above points, and an object of the present invention is to provide a beverage supply nozzle capable of solving the above-mentioned problems and securing a predetermined discharge time while suppressing a decrease in gas volume due to a pressure reducing unit. To provide.
  • the invention according to claim 1 for achieving the above object is a beverage supply nozzle that discharges high-pressure carbonated water generated by mixing cold water and carbon dioxide gas after depressurizing the high-pressure carbonated water.
  • a carbonated water introduction member to which the water is supplied a hollow tubular body that discharges the carbonated water introduced through the carbonated water introduction member from the discharge port at the other end, and a tubular body disposed inside the tubular body.
  • one of the outer wall surface and the inner wall surface of the tubular body has a polygonal cross section.
  • the resistor is provided with a resistor formed in the same direction and the other is formed in a circular shape in cross section.
  • the resistor has a multiple structure divided in the radial direction, and is located between the inner wall surface and the outer wall surface adjacent to each other in the radial direction. In a mode in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction, one of the inner wall surface or the outer wall surface adjacent in the radial direction is formed in a polygonal cross section and the other is formed in a circular cross section.
  • Each of the tubular body and the multi-layered resistor has a gradient in which the diameter gradually decreases from the upstream side where the carbonated water is introduced to the downstream side where the carbonated water is discharged, and the hollow tubular body and the multi-layered structure are provided. It is characterized in that a descent preventing means for preventing the descent of the resistor is provided between the resistor and the resistor located on the outermost side in the radial direction.
  • the lowering prevention means is provided on the inner wall surface of the hollow tubular body, and is the outermost in the radial direction among the resistors having a multi-layer structure. It is characterized in that it is a stopper that engages with a resistor located at and prevents the resistor from descending.
  • the invention according to claim 3 is characterized in that, in the beverage supply nozzle according to claim 1, the hollow tubular body and the resistor are made of a synthetic resin having a surface roughness of 0.1 ⁇ m or less.
  • the invention according to claim 4 is characterized in that, in the beverage supply nozzle according to claim 3, the synthetic resin constituting the hollow tubular body and the resistor is an ABS resin.
  • the carbonated water introduction member is formed so that the carbonated water introduction pipeline projects upward and the lower side is the axis of the carbonated water introduction pipeline. It is formed as a funnel-shaped expansion part centered on the water, and the head of the multi-layered resistor is conical as a whole, where it coincides with the inclination angle of the expansion part of the carbonated water introduction member. Therefore, among the multiple-structured resistors, the head of the resistor located inside has a step in a manner of sinking from the head of the outer resistor.
  • the beverage supply nozzle is a beverage supply nozzle that discharges high-pressure carbonated water generated by mixing cold water and carbonated water after reducing the pressure.
  • a carbonated water introduction member to which the high-pressure carbonated water is supplied a hollow tubular body that discharges the carbonated water introduced through the carbonated water introduction member from the discharge port at the other end, and an arrangement inside the tubular body.
  • the resistor has a multiple structure divided in the radial direction, and has an inner wall surface and an outer wall surface adjacent to each other in the radial direction.
  • one of the inner wall surface or the outer wall surface adjacent in the radial direction is formed in a polygonal cross section and the other has a circular cross section.
  • Each of the hollow tubular body and the multi-layered resistor is provided with a gradient in which the diameter gradually decreases from the upstream side where the carbonated water is introduced to the downstream side where the carbonated water is discharged.
  • the lowering prevention means for preventing the lowering of the resistor between the hollow tubular body and the resistor located on the outermost side in the radial direction among the multiple-structured resistors, for example, as described in claim 2.
  • the hollow tubular body and the resistor are made of a synthetic resin having a surface roughness of 0.1 ⁇ m or less, for example, claim 4.
  • a synthetic resin having a surface roughness of 0.1 ⁇ m or less, for example, ABS resin is used as a synthetic resin material constituting the resistor whose descent is prevented by the descent preventing means and the hollow tubular body by being made of the described ABS resin.
  • the carbonated water introduction member is formed so that the carbonated water introduction pipeline projects upward and downward. It is formed as a funnel-shaped expansion portion centered on the axis of the carbonated water introduction pipeline, and the head of the resistor having a multi-layer structure coincides with the inclination angle of the expansion portion of the carbonated water introduction member.
  • the head of the resistor located inside has a step in a manner that sinks from the head of the outer resistor, thereby achieving the following effects. Play.
  • the inclined surface of the multi-layered resistor on the head side is constant because it has a conical shape as a whole. It became continuous without a break at the inclination angle, and the carbonated water introduced through the carbonated water introduction member flowed along the conical inclined surface of the head of the resistor, and at the beginning when the carbonated water was introduced. Is the gas volume due to the separation of carbonated water due to the sudden change in pressure due to the interruption of the inflow of carbonated water into the pressure reducing part (gap) formed in the circumferential direction of the cross section of the conical inclined surface of the resistor.
  • the head of the resistor located inside is the head of the outer resistor.
  • Carbonated water is introduced by making the head of the resistor having a multi-layered structure into a conical shape as a whole, where the head of the resistor has a step in a more submerged manner and coincides with the inclination angle of the expanded portion of the carbonated water introducing member.
  • FIG. 1A and 1B show a beverage supply nozzle according to an embodiment of the present invention
  • FIG. 1A is a side view showing the overall configuration thereof
  • FIG. 1B is a sectional view taken along line AA of FIG. 1A
  • 2A and 2B show a tubular body in the beverage supply nozzle of FIG. 1
  • FIG. 2A is a perspective view of the tubular body viewed from diagonally above
  • FIG. 2B is a cross-sectional view of the tubular body.
  • 3A and 3B show a carbonated water introduction member in the beverage supply nozzle of FIG. 1
  • FIG. 3A is a perspective view of the carbonated water introduction member viewed from diagonally above
  • FIG. 3B is a sectional view taken along line BB of FIG. is there.
  • FIG. 4A and 4B show an outer resistor constituting the resistor in the beverage supply nozzle of FIG. 1
  • FIG. 4A is a perspective view of the outer resistor viewed from diagonally below
  • FIG. 4B is a side view of the outer resistor.
  • c) is a sectional view taken along line CC of (b).
  • FIG. 5 is a side view showing an inner resistor constituting the resistor in the beverage supply nozzle of FIG. 1.
  • FIG. 6 is a cross-sectional view showing the resistor of FIG. 7A and 7B show a modified example of the inner resistor constituting the resistor of FIG. 5, where FIG. 7A is a perspective view of the inner resistor viewed from diagonally below, and FIG. 7B is a cross section taken along line DD of FIG. It is a figure.
  • FIG. 8 is a schematic view showing a flow path system to which a conventional beverage supply nozzle is applied and a cross section of the beverage nozzle.
  • the beverage supply nozzle NZ is integrally mounted on the hollow tubular body 1, the resistor 2 inserted inside the hollow tubular body 1, and the upper portion of the hollow tubular body 1. It is composed of a carbonated water introduction member 3.
  • the hollow tubular body 1 is a molded product of a synthetic resin made of ABS resin having a surface roughness of 0.1 ⁇ m or less.
  • the upstream side of the tubular body 1 is formed in a circular shape in cross section and has a relatively large diameter as a storage space for the resistor 2, while the downstream side of the tubular body 1 is funnel-shaped and has a small diameter. Reach exit 11.
  • the upstream side of the relatively large-diameter tubular body 1 comprises a connection region SS of the carbonated water introduction member 3 and a resistor storage region RS for accommodating the resistor 2.
  • the resistor storage area RS in the tubular body 1 is a portion where the outer wall of the resistor 2 housed therein abuts, and the upper side of the resistor storage area RS is the connection area SS.
  • a screw groove 12 (see also FIG. 2) is formed in the connection region SS to be screwed with a screw groove 331 (see also FIG. 3) provided on the outer wall 33 of the carbonated water introduction member 3.
  • the resistor storage area RS in the tubular body 1 has a diameter on the lower end side (downstream side where carbonated water is discharged) of the resistor storage area RS with respect to the diameter on the upper end side (upstream side where carbonated water is introduced). It is formed with a gradient so that it is small. That is, as shown in FIG. 2B, the inner wall and the outer wall of the tubular body 1 in the resistor storage area RS with respect to the vertical line segment VL have the resistor storage area RS from the upstream side in the resistor storage area RS. There is a gradient (for example, a gradient of 3 degrees) in which the diameter gradually decreases toward the downstream side of the.
  • a stopper 1a projecting inward is integrally molded in the lower end region of the resistor storage region RS on the inner wall surface of the tubular body 1.
  • the stopper 1a constitutes a lowering prevention means.
  • the stopper 1a engages with the lower edge of the resistor 2 described later to prevent the resistor 2 from moving downward.
  • the stoppers 1a are arranged on the inner wall surface of the tubular body 1 in a circumferential direction (three at intervals of 120 degrees in this example).
  • a three-month-shaped chilled water passage 113 partitioned from the carbonated water passage 111 by a three-month-shaped partition wall 112 having a cross section is formed, and the opening formed in the outer wall of the chilled water passage 113 is used.
  • the cold water introduction path (not shown) is positioned at the positioning protrusion 114 in a manner of supplying cold water to the cold water passage 113, but the cold water introduction path is not an indispensable configuration. I have omitted it here.
  • Reference numeral 115 is a mounting piece for mounting on the beverage dispenser.
  • the carbonated water introduction member 3 functions as a lid in a manner of closing the hollow tubular body 1.
  • the carbonated water introduction member 3 includes an annular storage groove 300 for storing the O-ring 30 (see FIG. 1) and a screw groove 331 screwed into the screw groove 12 provided on the tubular body 1. ing.
  • the carbonated water introduction member 3 is integrated with the tubular body 1 by being screwed to the upper part of the tubular body 1 via an O-ring 30.
  • the carbonated water introduction pipe 31 is formed so as to project upward, and the lower part is formed as a funnel-shaped expansion portion 32 centered on the axis of the carbonated water introduction pipe 31. There is.
  • the inclination angle of the funnel-shaped expansion portion 32 corresponds to the inclination angle of the cone of the head formed in the conical shape of the resistor 2 described later, and the expansion portion 32 and the head of the resistor 2 The space between them becomes the introduction path, and the pressure of the carbonated water becomes constant because the interval between the introduction paths is constant.
  • a high-pressure carbonated water supply pipe generated by the carbonator 107 shown in FIG. 8 is connected to the carbonated water introduction pipe 31 via an electromagnetic valve V1.
  • the carbonated water introduction member 3 is formed in a hollow shape having a space between the carbonated water introduction pipe 31 and the outer wall 33, but the carbonated water introduction member 3 is not limited to the hollow shape and may be solid.
  • the resistor 2 is divided into a plurality of pieces in the radial direction, and in this embodiment, the resistor 2 is divided into an outer resistor 21 and an inner resistor 22 to form a double structure.
  • the outer resistor 21 and the inner resistor 22 are molded products of synthetic resin made of ABS resin having a surface roughness of 0.1 ⁇ m or less.
  • the outer resistor 21 is formed in a hollow tubular shape.
  • the inner wall of the hollow tubular outer resistor 21 is formed in a circular shape in cross section, while the outer wall is formed in a polygonal shape in cross section (for example, a regular 27-sided shape).
  • the outer wall of the outer resistor 21 is provided with a plurality of corner portions 211 and a flat surface portion 212.
  • the outer and inner walls of the outer resistor 21 have a gradient (for example, 3 degrees) whose diameter gradually decreases from the upstream side to the downstream side with respect to the vertical line segment VL. Gradient) is attached.
  • the diameters of the respective circles connecting the upper end (head) and the lower end corners 211 of the outer wall of the outer resistor 21 are the inner walls of the upper and lower ends of the resistor storage region RS of the tubular body 1, respectively.
  • the diameter is set to match the diameter.
  • a stopper 21a projecting inward is integrally formed on the lower side of the inner wall of the outer resistor 21.
  • the stopper 21a engages with the lower edge of the inner resistor 22 described later to prevent the inner resistor 22 from moving downward.
  • the stoppers 21a are arranged on the inner wall surface of the outer resistor 21 in a circumferential direction (three at intervals of 120 degrees in this example).
  • the stopper 21a suppresses the movement of the inner resistor 22 downward even when the outer resistor 21 and the inner resistor 22 are made of a synthetic resin made of ABS resin having a surface roughness of 0.1 ⁇ m or less. It is a thing, not necessarily necessary.
  • the upper end (head) and the lower end of the outer resistor 21 are formed as inclined surfaces 213,214 that narrow from the outer wall toward the inner wall.
  • the inclination angle of the inclined surface 213 of the upper end portion (head) is configured to match the inclination angle of the inclined surface of the conical head 220 of the inner resistor 22, which will be described later.
  • an inclined surface 215 (see FIG. 4C) that inclines in the direction opposite to the inclined surface 213 is formed on the inner wall side of the upper end portion (head) of the outer resistor 21, and the inclined surface 213 and the inclined surface 215 are formed.
  • the connection with the watershed forms a peak as a watershed.
  • the inner resistor 22 includes a conical head 220.
  • the inclination angle of the conical head 220 coincides with the inclination angle of the funnel-shaped expansion portion 32 of the carbonated water introduction member 3.
  • the outer wall of the inner resistor 22 has a polygonal cross-sectional shape (for example, a regular 21-sided shape), and is formed as a polygonal column having a plurality of square portions 221 and a flat surface portion 222.
  • the outer wall of the inner resistor 22 is provided with a gradient (for example, a gradient of 3 degrees) whose diameter gradually decreases from the upstream side to the downstream side with respect to the vertical line segment VL.
  • the diameter of the circle connecting the upper ends of the corners 221 of the outer wall of the inner resistor 22 is the upper end of the inner wall of the outer resistor 21, that is, the upper end of the outer resistor 21.
  • the diameter is set to match the diameter on the lower side of the inclined surface 215 forming the peak. Therefore, the diameter of the circle connecting the upper ends of the corners 221 of the outer wall of the inner resistor 22 (the bottom of the conical head 220) is set to be slightly smaller than the diameter of the peak at the upper end of the inner wall of the outer resistor 21. ing.
  • the inner resistor 22 is formed as a solid in this embodiment, it may be hollow as shown in the modified example of FIG. 7.
  • the inner resistor 22A shown in FIG. 7 has the same configuration as the inner resistor 22 shown in FIG. 5, except that the inside thereof is formed as a hollow leaving a cross-shaped reinforcing wall 223. is there. That is, the inner resistor 22A is formed in a polygonal columnar shape having a conical head 220A and a plurality of corner portions 221A and flat surface portions 222B on the outer wall.
  • the outer wall of the inner resistor 22A is provided with a gradient (for example, a gradient of 3 degrees) whose diameter gradually decreases from the upstream side to the downstream side with respect to the vertical line segment VL.
  • the resistor 2 is integrated by inserting the inner resistor 22 in a nested manner from the upper end opening of the hollow tubular outer resistor 21.
  • the inner resistor 22 inserted into the outer resistor 21 is pushed into the stopper 21a that protrudes inward at the inner wall surface of the outer resistor 21 until the lower edge of the inner resistor 22 comes into contact with the stopper 21a.
  • the plurality of corners 221 of the inner resistor 22 gradually come into contact with the inner wall of the outer resistor 21 in the process of descending until the lower edge of the inner resistor 22 abuts on the stopper 21a of the outer resistor 21.
  • the plurality of corner portions 221 of the inner resistor 22 are in close contact with the inner wall of the outer resistor 21.
  • the inclination angle of the inclined surface of the upper end (head) of the outer resistor 21 is the conical head of the inner resistor 22. Since it is configured to match the inclination angle of the inclined surface of the portion 220, the head of the resistor 2 has a conical shape as a whole, and the inclination angle of the conical head is the funnel of the carbonated water introduction member 3. It coincides with the inclination angle of the expanded portion 32 of the shape.
  • the bottom of the conical head 220 of the inner resistor 22 is located at the upper end of the inner wall of the outer resistor 21 (the lower side of the inclined surface 215 forming the peak of the upper end of the outer resistor 21). Therefore, the outer resistor 21 has a step (see FIG. 6) in a manner of sinking from the peak at the upper end (connecting portion between the inclined surface 215 and the inclined surface 213).
  • the inner resistor 22 is inserted into the hollow outer resistor 21 in a nested manner and integrated into the resistor 2, and all the flat surfaces (outer wall surface) 222 and the outer resistor of the inner resistor 22 are integrated. It is described in Patent Document 2 that a plurality of gaps (not shown) are formed between the inner wall surface of the 21 and the inner wall surface of the cross section in the circumferential direction of the cross-sectional circle, and the plurality of gaps formed in the circumferential direction form a pressure reducing portion. That's right.
  • the resistor 2 thus assembled is nested inside the tubular body 1 through the upper end opening of the hollow tubular body 1 and is mounted on the resistor storage area RS.
  • the resistor 2 inserted into the hollow tubular body 1 has a stopper 1a that projects inwardly provided on the inner wall surface of the hollow tubular body 1 and has a lower edge of the outer resistor 21 that constitutes the resistor 2. Pushed in until it touches.
  • the position of the stopper 1a provided in the lower end region of the resistor storage area RS on the inner wall of the tubular body 1 is the corner portion (outer resistance) of the resistor 2 when the resistor 2 is inserted into the tubular body 1 in a nested manner.
  • the corners 211) of the outer wall of the body 21 are in close contact with the inner wall surface of the tubular body 1 and engage with the lower edge of the outer resistor 21 constituting the resistor 2 in a state where the resistor 2 is fixed to the tubular body 1. It is defined in the place. Therefore, in the process of descending until the lower end of the outer resistor 21 comes into contact with the stopper 1a of the hollow tubular body 1, the plurality of corners 211 of the outer resistor 21 gradually come into contact with the inner wall of the hollow tubular body 1. When the lower edge of the outer resistor 21 comes into contact with the stopper 1a of the hollow tubular body 1, the plurality of corners 211 of the outer resistor 21 come into close contact with the inner wall of the hollow tubular body 1.
  • the carbonated water pumped into the carbonated water introduction pipeline 31 is evenly dispersed along the conical head 220 of the resistor 2 (inner resistor 22).
  • the tubular body 1, the outer resistor 21, and the inner resistor 22 are made of a synthetic resin material, and carbon dioxide gas is separated by colliding with the surface (concave and convex surface) of the synthetic resin material, but the surface is rough. Separation of carbon dioxide gas in the case of synthetic resin materials such as PA resin, PPE resin, PP resin with a thickness of more than 0.1 ⁇ m, whereas separation of carbon dioxide gas in the case of ABS resin with a surface roughness of 0.1 ⁇ m or less Less has been obtained by the inventor's experiments.
  • the frictional resistance between the tubular body 1 and the outer resistor 21 and the outer resistor 21 and the inner resistor 22 is small, so that the carbonated water introduction pipe
  • the inner resistor 22 is encouraged to move downward, but the stopper 1a provided on the inner wall of the tubular body 1 and the stopper 21a provided on the outer resistor 21 move the outer resistor 21 and the inner resistor 22 downward. Is blocked.
  • ABS resin having a surface roughness of 0.1 ⁇ m or less as the synthetic resin material constituting the resistor 2 and the hollow tubular body 1, and it is possible to suppress a decrease in gas volume due to the pressure reducing portion. Is possible.
  • the head of the resistor 2 has a conical shape as a whole where it coincides with the inclination angle of the expanded portion of the carbonated water introduction member, and the inner resistor 22 is formed. Since the bottom of the conical head 220 of the above has a step in a manner of sinking from the peak at the upper end of the outer resistor 21, the inner resistance even at the beginning when the carbonated water is introduced from the carbonated water introduction pipeline 31.
  • the pressure-reducing portion is such that the carbonated water flowing on the conical inclined surface is blocked by the step.
  • the beverage supply nozzle NZ that discharges high-pressure carbonated water generated by mixing cold water and carbonated water after decompressing it with the resistor 2.
  • the beverage supply nozzle NZ is a hollow that discharges the carbonated water introduction member 3 to which the high-pressure carbonated water is supplied and the carbonated water introduced through the carbonated water introduction member 3 from the discharge port 11 at the other end. In a mode in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction between the tubular body 1 of the above and the inner wall surface of the tubular body 1 and the outer wall surface adjacent to the inner wall surface in the radial direction.
  • the outer wall surface or the inner wall surface of the tubular body is provided with a resistor 2 having a polygonal cross section and the other having a circular cross section, and the resistor 2 is divided in the radial direction.
  • a resistor 2 having a polygonal cross section and the other having a circular cross section, and the resistor 2 is divided in the radial direction.
  • a double structure of an outer resistor 21 and an inner resistor 22 and an inner wall surface (inner wall surface of the outer resistor 21) and an outer wall surface (outer wall surface of the inner resistor 22) adjacent to each other in the radial direction.
  • a plurality of gaps as pressure reducing portions are formed in the circumferential direction, on the inner wall surface (inner wall surface of the outer resistor 21) or the outer wall surface (outer wall surface of the inner resistor 22) adjacent in the radial direction.
  • each of the hollow tubular body 1 and the resistor 2 having a multi-layer structure discharges carbonated water from the upstream side where carbonated water is introduced.
  • the beverage supply nozzle NZ having a gradient in which the diameter gradually decreases toward the downstream side, the inner wall surface of the hollow tubular body 1 and the outermost resistance in the radial direction of the multi-structured resistor 2.
  • the descent prevention means can prevent the resistor 2 from descending, so that the unit time while suppressing the decrease in gas volume due to the pressure reducing unit. This has the effect of providing a beverage supply nozzle capable of ensuring the passage amount of carbonated water per hit.
  • the outer wall of the outer resistor 21 is formed with a stopper that projects outward, while the tubular body is formed.
  • a groove (a groove extending in the vertical direction and deepening as it goes downward) is formed on the inner wall to receive the stopper of the outer resistor 21, or the hollow tubular body is made of a member different from the hollow tubular body 1.
  • the resistor 2 having a double structure composed of the outer resistor 21 and the inner resistor 22 has been described, but the resistor 2 is not limited to the double structure and may be double or more. You can also do it.
  • the inner wall surface of the tubular body is formed in a circular shape in cross section, and the outer wall surfaces of the outer resistor 21 and the inner resistor 22 are formed in a polygonal cross section, respectively.
  • the beverage supply nozzle according to the present invention is not limited to the one shown in the embodiment.
  • NZ ... Beverage supply nozzle, 1 ... Tubular body, 1a ... Stopper (lowering prevention means), 2 ... Resistor, 3 ... Carbonated water introduction member, 11 ... Discharge port, 21 ... Outer resistor, 21a ... Stopper, 22 ... Inner Resistor, 31 ... Carbonated water introduction pipeline, 211,221 ... Corner, 212, 222 ... Flat surface.

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  • Devices For Dispensing Beverages (AREA)

Abstract

Provided is a beverage dispensing nozzle NZ through which high-pressure carbonated water is discharged after the pressure thereof is reduced by means of a multi-structure resistive body 2 disposed inside a tube-like body 1. In order to prevent the resistive body 2 from moving downward due to the action of the high-pressure carbonated water introduced from a carbonated water introduction member 3, a stopper 1a is disposed between the hollow tube-like body 1 and the radially outermost resistive body portion (outer resistive body portion 21) of the multi-structure resistive body 2 as a downward movement prevention means for preventing downward movement of said resistive body portion (outer resistive body portion 21), and downward movement of the resistive body 2 is prevented by the stopper 1a.

Description

飲料供給ノズルBeverage supply nozzle
　この発明は、飲料ディスペンサ、カップ式自動販売機などの飲料供給装置における飲料供給ノズルに関し、特に飲料供給装置の内部で生成された炭酸水を吐出する飲料供給ノズルに関する。 The present invention relates to a beverage supply nozzle in a beverage supply device such as a beverage dispenser and a cup-type vending machine, and particularly to a beverage supply nozzle that discharges carbonated water generated inside the beverage supply device.
　例えば、種類の異なる複数のシロップ（濃縮液）から選択された一つのシロップと炭酸水、冷水等の希釈水とを混合して販売する飲料ディスペンサにおいては、飲料ディスペンサの内部に冷水と炭酸ガスとを混合して炭酸水を生成するカーボネータを備え、このカーボネータにより生成された炭酸水を飲料供給ノズルから飲料容器に注出するように構成されている。この種の飲料供給ノズルの従来例を図８に示し、図８はその飲料供給ノズルが適用された流路系統と飲料ノズルの断面を示す概略図である。 For example, in a beverage dispenser that sells a mixture of one syrup selected from a plurality of different types of syrup (concentrate) and diluted water such as carbonated water and cold water, cold water and carbon dioxide gas are contained inside the beverage dispenser. Is provided with a carbonator that produces carbonated water by mixing the above, and the carbonated water produced by this carbonator is configured to be poured out from a beverage supply nozzle into a beverage container. A conventional example of this type of beverage supply nozzle is shown in FIG. 8, and FIG. 8 is a schematic view showing a flow path system to which the beverage supply nozzle is applied and a cross section of the beverage nozzle.
　図８に示すように、従来の飲料供給ノズル１００は、中空の管状体１０１と、この管状体１０１の内部に挿入された抵抗体１０２とを備え、管状体１０１と抵抗体１０２とは合成樹脂の成型品になる。管状体１０１の上端には蓋部材の機能を持つ炭酸水導入部材１０３が装着される一方、下端が吐出口１０４として形成されている。また、管状体１０１の中間域には冷水導入路１０５が径外方向に突出して形成されると共に内部にフィルタ部材としての網１０６が配設されている。抵抗体１０２は、横断面が多角形（例えば１２角形）の多角柱状体からなる中実の多角柱として形成されると共に頭部が円錐状に突出して形成されている。この抵抗体１０２は、多角柱のそれぞれの角部が管状体１０１の内壁面に接するように管状体１０１の中空部に挿入され、これにより多角柱の抵抗体１０２の平面部と管状体１０１の円筒状の内壁面との間に隙間（圧力減圧部）が形成されている。このように、圧力減圧部としての隙間は横断面円の周方向に複数形成されてなる。炭酸水導入部材１０３には、カーボネータ１０７により冷水と炭酸ガスとを混合して生成した炭酸水が電磁弁Ｖ１を介して供給されるように構成され、前記冷水導入路１０５には、都市水道からの水道水を、冷却水槽を介して冷却した冷水が電磁弁Ｖ２を介して供給されるように構成されている。 As shown in FIG. 8, the conventional beverage supply nozzle 100 includes a hollow tubular body 101 and a resistor 102 inserted inside the tubular body 101, and the tubular body 101 and the resistor 102 are made of synthetic resin. It becomes a molded product of. A carbonated water introduction member 103 having a function of a lid member is attached to the upper end of the tubular body 101, while the lower end is formed as a discharge port 104. Further, in the intermediate region of the tubular body 101, a cold water introduction path 105 is formed so as to project in the outer diameter direction, and a net 106 as a filter member is arranged inside. The resistor 102 is formed as a solid polygonal column having a polygonal columnar body having a polygonal cross section (for example, a dodecagon) and a head projecting in a conical shape. The resistor 102 is inserted into the hollow portion of the tubular body 101 so that each corner of the polygonal column is in contact with the inner wall surface of the tubular body 101, whereby the flat surface portion of the resistor 102 of the polygonal column and the tubular body 101 A gap (pressure / depressurizing portion) is formed between the cylindrical inner wall surface and the inner wall surface. In this way, a plurality of gaps as the pressure reducing portion are formed in the circumferential direction of the cross-sectional circle. The carbonated water introduction member 103 is configured to supply carbonated water generated by mixing cold water and carbon dioxide gas by a carbonator 107 via a solenoid valve V1, and the cold water introduction path 105 is supplied from a city water supply. The tap water is cooled through the cooling water tank, and the cold water is supplied via the solenoid valve V2.
　かかる構成において、飲料ディスペンサの操作パネルに設けた炭酸飲料系の飲料選択ボタンが押されると、所定のタイミングで電磁弁Ｖ１が励磁されてカーボネータ１０７により冷水と炭酸ガスとを混合して生成した炭酸水が炭酸水導入部材１０３に圧送される。炭酸水導入部材１０３に圧送された炭酸水は、抵抗体１０２の円錐状の頭部に沿って均等に分散されたうえで抵抗体１０２の平面部と管状体１０１の内壁面との間に形成された隙間を通過して吐出口１０４から吐出される。なお、飲料ディスペンサの操作パネルに設けた無炭酸飲料系の飲料選択ボタンが押されると、所定のタイミングで電磁弁Ｖ２が励磁されて冷水導入路１０５を介して管状体１０１の吐出口１０４から冷水が吐出される（例えば、特許文献１）。前記特許文献１に開示された発明によれば、炭酸水導入部材１０３に圧送された炭酸水は、抵抗体１０２における多角柱の平面部と管状体１０１の内壁面との間に形成された隙間を通過する際に減圧されるので、炭酸ガスの分離によるガスボリュームの低下を防止することができ、加えて、抵抗体１０２の頭部を円錐状に形成していることにより炭酸水は抵抗体１０２の頭部に衝突した際に渦を発生することなく周囲に分散して流れて隙間（圧力減圧部）に導かれるので、渦の発生により生じる炭酸ガスの分離を抑制することができる点で優れている。 In such a configuration, when the carbonated beverage-based beverage selection button provided on the operation panel of the beverage dispenser is pressed, the solenoid valve V1 is excited at a predetermined timing, and carbon dioxide generated by mixing cold water and carbon dioxide gas by the carbonator 107 is generated. Water is pumped to the carbonated water introduction member 103. The carbonated water pumped to the carbonated water introduction member 103 is evenly dispersed along the conical head of the resistor 102 and then formed between the flat surface portion of the resistor 102 and the inner wall surface of the tubular body 101. It passes through the gap and is discharged from the discharge port 104. When the non-carbonated beverage selection button provided on the operation panel of the beverage dispenser is pressed, the solenoid valve V2 is excited at a predetermined timing, and cold water is excited from the discharge port 104 of the tubular body 101 via the cold water introduction path 105. Is discharged (for example, Patent Document 1). According to the invention disclosed in Patent Document 1, the carbonated water pumped to the carbonated water introduction member 103 has a gap formed between the flat surface portion of the polygonal column of the resistor 102 and the inner wall surface of the tubular body 101. Since the pressure is reduced when passing through the water, it is possible to prevent a decrease in gas volume due to the separation of carbon dioxide gas. In addition, the head of the resistor 102 is formed in a conical shape, so that the carbonated water is a resistor. When it collides with the head of 102, it disperses around without generating a vortex and is guided to the gap (pressure reducing part), so that the separation of carbon dioxide gas generated by the generation of the vortex can be suppressed. Are better.
　ところで、抵抗体１０２における多角柱の平面部と管状体１０１の内壁面との間に形成された隙間（圧力減圧部）が小さいほど炭酸水が通過する際の炭酸ガスの分離によるガスボリュームの低下を防止きるので、多角柱からなる抵抗体１０２の角数を増やせば前記隙間（圧力減圧部）を小さくすることが可能である。ところが、前記隙間（圧力減圧部）を小さくすると抵抗体１０２を通過する炭酸水の通過速度が低下することとなる。前記通過速度は、飲料供給ノズル１００から吐出する炭酸水の吐出時間に比例し、前記通過速度が低下するほど飲料供給ノズル１００から販売に必要な所定量の炭酸水を吐出の吐出時間が長くなるという問題を有する。この問題を解決するため、前述した抵抗体を径方向に分割し、中実多角柱として形成された内側抵抗体と中空管状の外壁を多角形状に形成された外側抵抗体とからなる２重構造とし、かつ、前記内側抵抗体の外壁とこの内側抵抗体が挿入される外側抵抗体の内壁と当該外側抵抗体の外壁およびこの外側抵抗体が挿入される管状体の内壁は、炭酸水が導入される上流側から炭酸水が吐出される下流側に向かって径が漸次縮小する勾配を有するものとし、前記管状体の内壁面と外側抵抗体の外壁平面部との間に形成された隙間、および内側抵抗体の平面部と外側抵抗体の内壁面との間に形成された隙間をそれぞれ圧力減圧部としたものが知られている（例えば、特許文献２）。特許文献２に開示された発明によれば、抵抗体を径方向に分割した２重構造とすることにより隙間（圧力減圧部）が小さくなって当該隙間（圧力減圧部）を通過する炭酸水の通過速度が低下するものの隙間（圧力減圧部）の数が増加することから単位時間当たりの炭酸水の通過量を増やすことができるので、所望される量の炭酸水を所定の吐出時間内に吐出させることが可能である。また、内側抵抗体，この内側抵抗体が挿入される外側抵抗体，この外側抵抗体が挿入される管状体は炭酸水が導入される上流側から炭酸水が吐出される下流側に向かって径が漸次縮小する勾配を有することにより、入れ子式に組み立てができるという利点を有する。 By the way, the smaller the gap (pressure reducing portion) formed between the flat surface portion of the polygonal prism in the resistor 102 and the inner wall surface of the tubular body 101, the lower the gas volume due to the separation of carbon dioxide gas when carbonated water passes. Therefore, it is possible to reduce the gap (pressure reducing portion) by increasing the number of angles of the resistor 102 made of polygonal columns. However, if the gap (pressure reducing portion) is reduced, the passing speed of carbonated water passing through the resistor 102 will decrease. The passing speed is proportional to the discharging time of the carbonated water discharged from the beverage supply nozzle 100, and as the passing speed decreases, the discharging time of discharging a predetermined amount of carbonated water required for sale from the beverage supply nozzle 100 becomes longer. Has the problem. In order to solve this problem, the above-mentioned resistor is divided in the radial direction, and a double structure composed of an inner resistor formed as a solid polygonal column and an outer resistor formed by forming a hollow tubular outer wall in a polygonal shape. In addition, carbonated water is introduced into the outer wall of the inner resistor, the inner wall of the outer resistor into which the inner resistor is inserted, the outer wall of the outer resistor, and the inner wall of the tubular body into which the outer resistor is inserted. A gap formed between the inner wall surface of the tubular body and the outer wall surface portion of the outer resistor, having a gradient in which the diameter gradually decreases from the upstream side to the downstream side where the carbonated water is discharged. It is known that the gaps formed between the flat surface portion of the inner resistor and the inner wall surface of the outer resistor are used as pressure reducing portions (for example, Patent Document 2). According to the invention disclosed in Patent Document 2, the gap (pressure reducing part) becomes smaller by forming the resistor into a double structure divided in the radial direction, and the carbonated water passing through the gap (pressure reducing part). Although the passing speed decreases, the number of gaps (pressure reducing part) increases, so that the amount of carbonated water passing per unit time can be increased, so that the desired amount of carbonated water is discharged within a predetermined discharge time. It is possible to make it. In addition, the inner resistor, the outer resistor into which this inner resistor is inserted, and the tubular body into which this outer resistor is inserted have a diameter from the upstream side where carbonated water is introduced toward the downstream side where carbonated water is discharged. Has the advantage that it can be assembled in a nested manner by having a gradient that gradually shrinks.
特開２０１２－１４４２７２号公報Japanese Unexamined Patent Publication No. 2012-144272 特開２０１６－１７２５８０号公報Japanese Unexamined Patent Publication No. 2016-172580
　ところで、図８に示した炭酸水導入部材１０３に圧送された炭酸水は、管状体１０１を膨らませるように作用すると共に抵抗体１０２を下方に押圧するように作用する。この場合、特許文献２に記載された発明のように、抵抗体および管状体が勾配を有して入れ子式に組み立てられた飲料供給ノズルにあっては管状体の膨らみ、および抵抗体と管状体とが合成樹脂製になることにより両者間の摩擦抵抗が小さいことが相俟って抵抗体が管状体に対して下方に移動する不具合が生じるおそれがある。抵抗体の下方への移動は、管状体の内壁に設けた勾配の範囲（上下方向の寸法）が外側抵抗体の外壁の上下方向の寸法に一致するように定められている場合には圧力減圧部の領域が縮小することとなり、また、抵抗体の下方への移動は炭酸水の導入路が拡大することを意味し、炭酸水の導入路が拡大すると炭酸水の圧力が低下してガスボリュームの低下を惹起する。抵抗体の下方への移動を防止するため、管状体および抵抗体の合成樹脂材料として表面粗さの粗い合成樹脂材料を採用し、抵抗体と管状体との間の摩擦抵抗を大きくすることが考えられるが、この場合には、合成樹脂材料の表面（凹凸面）に炭酸水が衝突することによって炭酸ガスが分離するという、相反する課題を有するものである。 By the way, the carbonated water pumped to the carbonated water introduction member 103 shown in FIG. 8 acts to inflate the tubular body 101 and to press the resistor 102 downward. In this case, as in the invention described in Patent Document 2, in the case of a beverage supply nozzle in which the resistor and the tubular body are assembled in a nested manner with a gradient, the bulge of the tubular body and the resistor and the tubular body Since the resistor is made of synthetic resin, the frictional resistance between the two is small, which may cause a problem that the resistor moves downward with respect to the tubular body. The downward movement of the resistor is depressurized if the gradient range (vertical dimension) provided on the inner wall of the tubular body is defined to match the vertical dimension of the outer wall of the outer resistor. The area of the part will be reduced, and the downward movement of the resistor means that the introduction path of carbonated water will expand, and when the introduction path of carbonated water expands, the pressure of carbonated water will decrease and the gas volume will decrease. Causes a decrease in. In order to prevent the resistor from moving downward, it is possible to use a synthetic resin material with a rough surface roughness as the synthetic resin material for the tubular body and the resistor to increase the frictional resistance between the resistor and the tubular body. However, in this case, there is a contradictory problem that the carbon dioxide gas is separated by the collision of the carbonated water with the surface (concave and convex surface) of the synthetic resin material.
　本発明は上記の点に鑑みなされたものであり、その目的は前記課題を解決し、圧力減圧部によるガスボリュームの低下を抑制しつつ所定の吐出時間を確保することが可能な飲料供給ノズルを提供することにある。 The present invention has been made in view of the above points, and an object of the present invention is to provide a beverage supply nozzle capable of solving the above-mentioned problems and securing a predetermined discharge time while suppressing a decrease in gas volume due to a pressure reducing unit. To provide.
　上記目的を達成するために請求項１にかかる発明は、冷水と炭酸ガスとを混合して生成された高圧の炭酸水を減圧したうえで吐出する飲料供給ノズルであって、前記高圧の炭酸水が供給される炭酸水導入部材と、この炭酸水導入部材を介して導入された炭酸水を他端の吐出口から吐出する中空の管状体と、この管状体の内部に配設されて管状体の内壁面と径方向に隣接する外壁面との間に圧力減圧部としての隙間を横断面周方向に複数形成する態様で、前記外壁面若しくは前記管状体の内壁面の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成されてなる抵抗体とを備え、前記抵抗体は径方向に分割された多重構造とし、径方向に隣接する内壁面と外壁面との間に圧力減圧部としての隙間を周方向に複数形成する態様で、径方向に隣接する内壁面若しくは外壁面の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成され、前記中空の管状体および多重構造の抵抗体のそれぞれは炭酸水が導入される上流側から炭酸水が吐出される下流側に向かって径が漸次縮小する勾配を備えてなり、中空の管状体と多重構造の抵抗体のうちの径方向に最も外側に位置する抵抗体との間に当該抵抗体の下降を阻止する下降防止手段を設けてなることを特徴とする。 The invention according to claim 1 for achieving the above object is a beverage supply nozzle that discharges high-pressure carbonated water generated by mixing cold water and carbon dioxide gas after depressurizing the high-pressure carbonated water. A carbonated water introduction member to which the water is supplied, a hollow tubular body that discharges the carbonated water introduced through the carbonated water introduction member from the discharge port at the other end, and a tubular body disposed inside the tubular body. In a mode in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction of the cross section between the inner wall surface of the above and the outer wall surface adjacent in the radial direction, one of the outer wall surface and the inner wall surface of the tubular body has a polygonal cross section. The resistor is provided with a resistor formed in the same direction and the other is formed in a circular shape in cross section. The resistor has a multiple structure divided in the radial direction, and is located between the inner wall surface and the outer wall surface adjacent to each other in the radial direction. In a mode in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction, one of the inner wall surface or the outer wall surface adjacent in the radial direction is formed in a polygonal cross section and the other is formed in a circular cross section. Each of the tubular body and the multi-layered resistor has a gradient in which the diameter gradually decreases from the upstream side where the carbonated water is introduced to the downstream side where the carbonated water is discharged, and the hollow tubular body and the multi-layered structure are provided. It is characterized in that a descent preventing means for preventing the descent of the resistor is provided between the resistor and the resistor located on the outermost side in the radial direction.
　また、請求項２にかかる発明は、請求項１に記載の飲料供給ノズルにおいて、下降防止手段は、中空の管状体の内壁面に設けられ、多重構造の抵抗体のうちの径方向に最も外側に位置する抵抗体に係合して当該抵抗体の下降を阻止するストッパであることを特徴とする。 Further, according to the second aspect of the present invention, in the beverage supply nozzle according to the first aspect, the lowering prevention means is provided on the inner wall surface of the hollow tubular body, and is the outermost in the radial direction among the resistors having a multi-layer structure. It is characterized in that it is a stopper that engages with a resistor located at and prevents the resistor from descending.
　また、請求項３にかかる発明は、請求項１に記載の飲料供給ノズルにおいて、中空の管状体および抵抗体は表面粗さが０．１μｍ以下の合成樹脂からなることを特徴とする。 The invention according to claim 3 is characterized in that, in the beverage supply nozzle according to claim 1, the hollow tubular body and the resistor are made of a synthetic resin having a surface roughness of 0.1 μm or less.
　また、請求項４にかかる発明は、請求項３に記載の飲料供給ノズルにおいて、中空の管状体および抵抗体を構成する合成樹脂はＡＢＳ樹脂であることを特徴とする。 The invention according to claim 4 is characterized in that, in the beverage supply nozzle according to claim 3, the synthetic resin constituting the hollow tubular body and the resistor is an ABS resin.
　また、請求項５にかかる発明は、請求項１に記載の飲料供給ノズルにおいて、炭酸水導入部材は、炭酸水導入管路が上方に突出して形成されると共に下方が炭酸水導入管路の軸線を中心に漏斗状に拡開した拡開部として形成されてなり、多重構造の抵抗体の頭部は前記炭酸水導入部材の拡開部の傾斜角度と一致するところの、全体として円錐状であって、多重構造の抵抗体のうち、内側に位置する抵抗体の頭部は外側の抵抗体の頭部より沈み込む態様で段差を有することを特徴とする。 Further, according to the fifth aspect of the present invention, in the beverage supply nozzle according to the first aspect, the carbonated water introduction member is formed so that the carbonated water introduction pipeline projects upward and the lower side is the axis of the carbonated water introduction pipeline. It is formed as a funnel-shaped expansion part centered on the water, and the head of the multi-layered resistor is conical as a whole, where it coincides with the inclination angle of the expansion part of the carbonated water introduction member. Therefore, among the multiple-structured resistors, the head of the resistor located inside has a step in a manner of sinking from the head of the outer resistor.
　本発明の請求項１にかかる飲料供給ノズルによれば、冷水と炭酸ガスとを混合して生成された高圧の炭酸水を減圧したうえで吐出する飲料供給ノズルであって、飲料供給ノズルは、前記高圧の炭酸水が供給される炭酸水導入部材と、この炭酸水導入部材を介して導入された炭酸水を他端の吐出口から吐出する中空の管状体と、この管状体の内部に配設されて管状体の内壁面と径方向に隣接する外壁面との間に圧力減圧部としての隙間を横断面周方向に複数形成する態様で、前記外壁面若しくは前記管状体の内壁面の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成されてなる抵抗体とを備え、前記抵抗体は径方向に分割された多重構造とし、径方向に隣接する内壁面と外壁面との間に圧力減圧部としての隙間を周方向に複数形成する態様で、径方向に隣接する内壁面若しくは外壁面の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成され、前記中空の管状体および多重構造の抵抗体のそれぞれは炭酸水が導入される上流側から炭酸水が吐出される下流側に向かって径が漸次縮小する勾配を備えてなる飲料供給ノズルにおいて、中空の管状体と多重構造の抵抗体のうちの径方向に最も外側に位置する抵抗体との間に当該抵抗体の下降を阻止する下降防止手段、例えば請求項２に記載したところの、中空の管状体の内壁面に設けられ、多重構造の抵抗体のうちの径方向に最も外側に位置する抵抗体に係合して当該抵抗体の下降を阻止するストッパを設けてなることにより、炭酸水導入部材から導入された高圧の炭酸水によって抵抗体が下方へ移動しようとしても、下降防止手段により抵抗体の下降を阻止することができるので、圧力減圧部によるガスボリュームの低下を抑制しつつ、単位時間当たりの炭酸水の通過量を確保することが可能な飲料供給ノズルを提供できるという効果を奏するものである。 According to the beverage supply nozzle according to claim 1 of the present invention, the beverage supply nozzle is a beverage supply nozzle that discharges high-pressure carbonated water generated by mixing cold water and carbonated water after reducing the pressure. A carbonated water introduction member to which the high-pressure carbonated water is supplied, a hollow tubular body that discharges the carbonated water introduced through the carbonated water introduction member from the discharge port at the other end, and an arrangement inside the tubular body. One of the outer wall surface or the inner wall surface of the tubular body, in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction of the cross section between the inner wall surface of the tubular body and the outer wall surface adjacent in the radial direction. Is provided with a resistor formed in a polygonal cross section and the other is formed in a circular cross section. The resistor has a multiple structure divided in the radial direction, and has an inner wall surface and an outer wall surface adjacent to each other in the radial direction. In a mode in which a plurality of gaps as pressure-reducing portions are formed in the circumferential direction with the wall surface, one of the inner wall surface or the outer wall surface adjacent in the radial direction is formed in a polygonal cross section and the other has a circular cross section. Each of the hollow tubular body and the multi-layered resistor is provided with a gradient in which the diameter gradually decreases from the upstream side where the carbonated water is introduced to the downstream side where the carbonated water is discharged. The lowering prevention means for preventing the lowering of the resistor between the hollow tubular body and the resistor located on the outermost side in the radial direction among the multiple-structured resistors, for example, as described in claim 2. By providing a stopper provided on the inner wall surface of the hollow tubular body and engaging with the outermost radial resistor of the multi-layer structure to prevent the resistor from descending. Even if the resistor tries to move downward due to the high-pressure carbonated water introduced from the carbonated water introduction member, the descent prevention means can prevent the resistor from descending, so that the decrease in gas volume due to the pressure reducing part is suppressed. At the same time, it has the effect of providing a beverage supply nozzle capable of ensuring the amount of carbonated water passing per unit time.
　また、請求項３にかかる飲料供給ノズルによれば、請求項１に記載の飲料供給ノズルにおいて、中空の管状体および抵抗体は表面粗さが０．１μｍ以下の合成樹脂、例えば請求項４に記載したＡＢＳ樹脂からなることにより、下降防止手段により下降が阻止された抵抗体と中空の管状体とを構成する合成樹脂材料として表面粗さが０．１μｍ以下の合成樹脂、例えばＡＢＳ樹脂を採用することが可能となり、圧力減圧部によるガスボリュームの低下を抑制しつつ、単位時間当たりの炭酸水の通過量を確保することが可能な飲料供給ノズルを提供できるという効果を奏するものである。 Further, according to the beverage supply nozzle according to claim 3, in the beverage supply nozzle according to claim 1, the hollow tubular body and the resistor are made of a synthetic resin having a surface roughness of 0.1 μm or less, for example, claim 4. A synthetic resin having a surface roughness of 0.1 μm or less, for example, ABS resin, is used as a synthetic resin material constituting the resistor whose descent is prevented by the descent preventing means and the hollow tubular body by being made of the described ABS resin. This makes it possible to provide a beverage supply nozzle capable of ensuring the passage amount of carbonated water per unit time while suppressing a decrease in gas volume due to the pressure reducing unit.
　また、本発明の請求項５にかかる飲料供給ノズルによれば、請求項１に記載の飲料供給ノズルにおいて、炭酸水導入部材は、炭酸水導入管路が上方に突出して形成されると共に下方が炭酸水導入管路の軸線を中心に漏斗状に拡開した拡開部として形成されてなり、多重構造の抵抗体の頭部は前記炭酸水導入部材の拡開部の傾斜角度と一致するところの、全体として円錐状であって、多重構造の抵抗体のうち、内側に位置する抵抗体の頭部は外側の抵抗体の頭部より沈み込む態様で段差を有することにより、次の効果を奏する。すなわち、ただ単に円錐状の頭部を有する抵抗体を径方向に分割した多重構造とした場合、多重構造の抵抗体の頭部側における傾斜面は全体として円錐状の形態をなすために一定の傾斜角度で切れ目のない連続したものとなり、炭酸水導入部材を介して導入された炭酸水は抵抗体の頭部の円錐状の傾斜面に沿って流れることとなり、炭酸水が導入された当初においては抵抗体の円錐状傾斜面の横断面周方向に複数形成された圧力減圧部（隙間）への炭酸水の流入が途切れ途切れとなって圧力が急変することによって炭酸ガスの分離によるガスボリュームの低下を惹起する（導入路が炭酸水で満たされると横断面周方向に複数形成された圧力減圧部（隙間）には均等に炭酸水が流入し、各圧力減圧部（隙間）には炭酸水が連続して流入することから炭酸ガスの分離によるガスボリュームの低下が生じることはない）一方、多重構造の抵抗体のうち、内側に位置する抵抗体の頭部は外側の抵抗体の頭部より沈み込む態様で段差を有し、多重構造の抵抗体の頭部は前記炭酸水導入部材の拡開部の傾斜角度と一致するところの、全体として円錐状とすることにより、炭酸水が導入された当初においても抵抗体の中心軸側の同心円の周上の圧力減圧部（隙間）においては段差によって円錐状の傾斜面を流れる炭酸水が堰き止められる態様で圧力減圧部（隙間）への炭酸水の流入が連続するため、圧力の急変を抑制、つまり、炭酸ガスの分離によるガスボリュームの低下を抑制することが可能となる。 Further, according to the beverage supply nozzle according to claim 5 of the present invention, in the beverage supply nozzle according to claim 1, the carbonated water introduction member is formed so that the carbonated water introduction pipeline projects upward and downward. It is formed as a funnel-shaped expansion portion centered on the axis of the carbonated water introduction pipeline, and the head of the resistor having a multi-layer structure coincides with the inclination angle of the expansion portion of the carbonated water introduction member. Of the multi-layered resistors that are conical as a whole, the head of the resistor located inside has a step in a manner that sinks from the head of the outer resistor, thereby achieving the following effects. Play. That is, when a resistor having a conical head is simply divided in the radial direction into a multi-layered structure, the inclined surface of the multi-layered resistor on the head side is constant because it has a conical shape as a whole. It became continuous without a break at the inclination angle, and the carbonated water introduced through the carbonated water introduction member flowed along the conical inclined surface of the head of the resistor, and at the beginning when the carbonated water was introduced. Is the gas volume due to the separation of carbonated water due to the sudden change in pressure due to the interruption of the inflow of carbonated water into the pressure reducing part (gap) formed in the circumferential direction of the cross section of the conical inclined surface of the resistor. Causes a decrease (when the introduction path is filled with carbonated water, carbonated water flows evenly into the pressure-reducing parts (gap) formed in the circumferential direction of the cross section, and carbonated water is applied to each pressure-reducing part (gap). On the other hand, among the multiple-structured resistors, the head of the resistor located inside is the head of the outer resistor. Carbonated water is introduced by making the head of the resistor having a multi-layered structure into a conical shape as a whole, where the head of the resistor has a step in a more submerged manner and coincides with the inclination angle of the expanded portion of the carbonated water introducing member. Even at the beginning, in the pressure-reducing part (gap) on the circumference of the concentric circle on the central axis side of the resistor, the carbonated water flowing on the conical inclined surface is blocked by the step to the pressure-reducing part (gap). Since the inflow of carbonated water is continuous, it is possible to suppress a sudden change in pressure, that is, to suppress a decrease in gas volume due to separation of carbonated water.
図１は、本発明の実施の形態にかかる飲料供給ノズルを示し、（ａ）はその全体構成を示す側面図、（ｂ）は（ａ）のＡ－Ａ線断面図である。1A and 1B show a beverage supply nozzle according to an embodiment of the present invention, FIG. 1A is a side view showing the overall configuration thereof, and FIG. 1B is a sectional view taken along line AA of FIG. 1A. 図２は、図１の飲料供給ノズルにおける管状体を示し、（ａ）は管状体を斜め上方から見た斜視図、（ｂ）は管状体の断面図である。2A and 2B show a tubular body in the beverage supply nozzle of FIG. 1, FIG. 2A is a perspective view of the tubular body viewed from diagonally above, and FIG. 2B is a cross-sectional view of the tubular body. 図３は、図１の飲料供給ノズルにおける炭酸水導入部材を示し、（ａ）は炭酸水導入部材を斜め上方から見た斜視図、（ｂ）は（ａ）のＢ－Ｂ線断面図である。3A and 3B show a carbonated water introduction member in the beverage supply nozzle of FIG. 1, FIG. 3A is a perspective view of the carbonated water introduction member viewed from diagonally above, and FIG. 3B is a sectional view taken along line BB of FIG. is there. 図４は、図１の飲料供給ノズルにおける抵抗体を構成する外側抵抗体を示し、（ａ）は外側抵抗体を斜め下方から見た斜視図、（ｂ）は外側抵抗体の側面図、（ｃ）は（ｂ）のＣ－Ｃ線断面図である。4A and 4B show an outer resistor constituting the resistor in the beverage supply nozzle of FIG. 1, FIG. 4A is a perspective view of the outer resistor viewed from diagonally below, and FIG. 4B is a side view of the outer resistor. c) is a sectional view taken along line CC of (b). 図５は、図１の飲料供給ノズルにおける抵抗体を構成する内側抵抗体を示す側面図である。FIG. 5 is a side view showing an inner resistor constituting the resistor in the beverage supply nozzle of FIG. 1. 図６は、図１の抵抗体を示す断面図である。FIG. 6 is a cross-sectional view showing the resistor of FIG. 図７は、図５の抵抗体を構成する内側抵抗体の変形例を示し、（ａ）は内側抵抗体を斜め下方から見た斜視図、（ｂ）は（ａ）のＤ－Ｄ線断面図である。7A and 7B show a modified example of the inner resistor constituting the resistor of FIG. 5, where FIG. 7A is a perspective view of the inner resistor viewed from diagonally below, and FIG. 7B is a cross section taken along line DD of FIG. It is a figure. 図８は、従来の飲料供給ノズルが適用された流路系統と飲料ノズルの断面を示す概略図である。FIG. 8 is a schematic view showing a flow path system to which a conventional beverage supply nozzle is applied and a cross section of the beverage nozzle.
　以下、本発明の実施の形態にかかる飲料ディスペンサなどの飲料供給装置における飲料供給ノズルを図面に基づいて詳細に説明する。 Hereinafter, the beverage supply nozzle in the beverage supply device such as the beverage dispenser according to the embodiment of the present invention will be described in detail with reference to the drawings.
　飲料供給ノズルＮＺは、図１に示すように、中空の管状体１と、この中空の管状体１の内部に挿入された抵抗体２と、中空の管状体１の上部に一体的に装着される炭酸水導入部材３とからなる。 As shown in FIG. 1, the beverage supply nozzle NZ is integrally mounted on the hollow tubular body 1, the resistor 2 inserted inside the hollow tubular body 1, and the upper portion of the hollow tubular body 1. It is composed of a carbonated water introduction member 3.
　前記中空の管状体１は、表面粗さが０．１μｍ以下のＡＢＳ樹脂からなる合成樹脂の成型品になる。前記管状体１の上流側は、横断面円形状に形成されると共に抵抗体２の収納空間として比較的大径に形成される一方、管状体１の下流側は漏斗状をなして小径の吐出口１１に至る。比較的大径の管状体１の上流側は、炭酸水導入部材３の接続領域ＳＳと抵抗体２を収納する抵抗体収納領域ＲＳとからなる。前記管状体１における抵抗体収納領域ＲＳは、その内部に収納される抵抗体２の外壁が当接する部位であり、この抵抗体収納領域ＲＳの上部側が接続領域ＳＳである。この接続領域ＳＳには、炭酸水導入部材３の外壁３３に設けたねじ溝３３１（図３も参照）と螺合するねじ溝１２（図２も参照）が形成されている。 The hollow tubular body 1 is a molded product of a synthetic resin made of ABS resin having a surface roughness of 0.1 μm or less. The upstream side of the tubular body 1 is formed in a circular shape in cross section and has a relatively large diameter as a storage space for the resistor 2, while the downstream side of the tubular body 1 is funnel-shaped and has a small diameter. Reach exit 11. The upstream side of the relatively large-diameter tubular body 1 comprises a connection region SS of the carbonated water introduction member 3 and a resistor storage region RS for accommodating the resistor 2. The resistor storage area RS in the tubular body 1 is a portion where the outer wall of the resistor 2 housed therein abuts, and the upper side of the resistor storage area RS is the connection area SS. A screw groove 12 (see also FIG. 2) is formed in the connection region SS to be screwed with a screw groove 331 (see also FIG. 3) provided on the outer wall 33 of the carbonated water introduction member 3.
　前記管状体１における抵抗体収納領域ＲＳは、上端側（炭酸水が導入される上流側）の径に対して抵抗体収納領域ＲＳの下端側（炭酸水が吐出される下流側）の径が小さなるように勾配をもって形成されている。すなわち、図２の（ｂ）に示すように、垂直線分ＶＬに対して抵抗体収納領域ＲＳにおける管状体１の内壁および外壁には、抵抗体収納領域ＲＳにおける上流側から抵抗体収納領域ＲＳの下流側に向かって径が漸次縮小する勾配（例えば、３度の勾配）が付けられている。 The resistor storage area RS in the tubular body 1 has a diameter on the lower end side (downstream side where carbonated water is discharged) of the resistor storage area RS with respect to the diameter on the upper end side (upstream side where carbonated water is introduced). It is formed with a gradient so that it is small. That is, as shown in FIG. 2B, the inner wall and the outer wall of the tubular body 1 in the resistor storage area RS with respect to the vertical line segment VL have the resistor storage area RS from the upstream side in the resistor storage area RS. There is a gradient (for example, a gradient of 3 degrees) in which the diameter gradually decreases toward the downstream side of the.
　図２の（ｂ）に示すように、前記管状体１の内壁面における抵抗体収納領域ＲＳの下端域には内側に向けて突出するストッパ１ａが一体成形されている。このストッパ１ａが下降防止手段を構成する。前記ストッパ１ａは後述する抵抗体２の下縁に係合して抵抗体２の下方への移動を阻止するものである。このストッパ１ａは管状体１の内壁面に周方向に分散（この例では１２０度の間隔で３個）して配置されている。 As shown in FIG. 2B, a stopper 1a projecting inward is integrally molded in the lower end region of the resistor storage region RS on the inner wall surface of the tubular body 1. The stopper 1a constitutes a lowering prevention means. The stopper 1a engages with the lower edge of the resistor 2 described later to prevent the resistor 2 from moving downward. The stoppers 1a are arranged on the inner wall surface of the tubular body 1 in a circumferential direction (three at intervals of 120 degrees in this example).
　なお、管状体１の下部側には横断面三ケ月状の区画壁１１２により炭酸水の通路１１１と区画された三ケ月状の冷水通路１１３が形成され、この冷水通路１１３の外壁に形成した開口を介して当該冷水通路１１３に冷水を供給する態様で冷水導入路（不図示）が位置決め用突部１１４に位置決めされる態様で装着されるものであるが、冷水導入路は必須の構成ではないので、ここでは割愛している。また、１１５は飲料ディスペンサに取り付けるための取付け片である。 On the lower side of the tubular body 1, a three-month-shaped chilled water passage 113 partitioned from the carbonated water passage 111 by a three-month-shaped partition wall 112 having a cross section is formed, and the opening formed in the outer wall of the chilled water passage 113 is used. The cold water introduction path (not shown) is positioned at the positioning protrusion 114 in a manner of supplying cold water to the cold water passage 113, but the cold water introduction path is not an indispensable configuration. I have omitted it here. Reference numeral 115 is a mounting piece for mounting on the beverage dispenser.
　炭酸水導入部材３は、中空の管状体１を閉塞する態様の蓋の機能を果たすものである。炭酸水導入部材３は、図３に示すように、Ｏリング３０（図１参照）を格納する環状の格納溝３００と、管状体１に設けたねじ溝１２に螺合するねじ溝３３１を備えている。この炭酸水導入部材３は、管状体１の上部にＯリング３０を介してねじ止めされることにより管状体１と一体化される。炭酸水導入部材３には、炭酸水導入管路３１が上方に突出して形成されると共に下方が炭酸水導入管路３１の軸線を中心に漏斗状に拡開した拡開部３２として形成されている。漏斗状の拡開部３２の傾斜角度は、後述する抵抗体２の円錐状に形成された頭部の円錐の傾斜角度に一致するものであり、拡開部３２と抵抗体２の頭部との間が導入路となり、導入路の間隔が一定であることによって炭酸水の圧力が一定となる。炭酸水導入管路３１には、図８示したカーボネータ１０７により生成された高圧の炭酸水の供給管路が電磁弁Ｖ１を介して接続される。炭酸水導入部材３は、この実施の形態では炭酸水導入管路３１と外壁３３との間が空間を有する中空状に形成されているが、中空に限らず中実であってもよい。 The carbonated water introduction member 3 functions as a lid in a manner of closing the hollow tubular body 1. As shown in FIG. 3, the carbonated water introduction member 3 includes an annular storage groove 300 for storing the O-ring 30 (see FIG. 1) and a screw groove 331 screwed into the screw groove 12 provided on the tubular body 1. ing. The carbonated water introduction member 3 is integrated with the tubular body 1 by being screwed to the upper part of the tubular body 1 via an O-ring 30. In the carbonated water introduction member 3, the carbonated water introduction pipe 31 is formed so as to project upward, and the lower part is formed as a funnel-shaped expansion portion 32 centered on the axis of the carbonated water introduction pipe 31. There is. The inclination angle of the funnel-shaped expansion portion 32 corresponds to the inclination angle of the cone of the head formed in the conical shape of the resistor 2 described later, and the expansion portion 32 and the head of the resistor 2 The space between them becomes the introduction path, and the pressure of the carbonated water becomes constant because the interval between the introduction paths is constant. A high-pressure carbonated water supply pipe generated by the carbonator 107 shown in FIG. 8 is connected to the carbonated water introduction pipe 31 via an electromagnetic valve V1. In this embodiment, the carbonated water introduction member 3 is formed in a hollow shape having a space between the carbonated water introduction pipe 31 and the outer wall 33, but the carbonated water introduction member 3 is not limited to the hollow shape and may be solid.
　前記抵抗体２は、径方向に複数に分割、この実施の形態では外側抵抗体２１と内側抵抗体２２とに分割されて２重構造に形成されている。外側抵抗体２１と内側抵抗体２２は、表面粗さが０．１μｍ以下のＡＢＳ樹脂からなる合成樹脂の成型品になる。 The resistor 2 is divided into a plurality of pieces in the radial direction, and in this embodiment, the resistor 2 is divided into an outer resistor 21 and an inner resistor 22 to form a double structure. The outer resistor 21 and the inner resistor 22 are molded products of synthetic resin made of ABS resin having a surface roughness of 0.1 μm or less.
　図４に示すように、外側抵抗体２１は中空の管状に形成されている。この中空管状の外側抵抗体２１はその内壁が横断面円形状に形成される一方、外壁が横断面多角形状（例えば、正２７角形）に形成されている。このように外側抵抗体２１の外壁を横断面多角形状に形成することにより外側抵抗体２１の外壁には、複数の角部２１１と平面部２１２とが設けられている。また、外側抵抗体２１の外壁および内壁には、図４の（ｃ）に示すように、垂直線分ＶＬに対し、上流側から下流側に向かって径が漸次縮小する勾配（例えば、３度の勾配）が付けられている。ここで、外側抵抗体２１の外壁の上端部（頭部）および下端部の角部２１１を結ぶそれぞれの円の径は、管状体１の抵抗体収納領域ＲＳにおける上端および下端の内壁のそれぞれの径と一致する径に定められている。そして、外側抵抗体２１の内壁の下部側には内側に向けて突出するストッパ２１ａが一体成形されている。ストッパ２１ａは後述する内側抵抗体２２の下縁に係合して内側抵抗体２２の下方への移動を阻止するものである。このストッパ２１ａは外側抵抗体２１の内壁面に周方向に分散（この例では１２０度の間隔で３個）して配置されている。なお、このストッパ２１ａは、外側抵抗体２１と内側抵抗体２２を表面粗さが０．１μｍ以下のＡＢＳ樹脂からなる合成樹脂とした場合にも内側抵抗体２２が下方へ移動するのを抑制するものであって、必ずしも必要なものではなない。 As shown in FIG. 4, the outer resistor 21 is formed in a hollow tubular shape. The inner wall of the hollow tubular outer resistor 21 is formed in a circular shape in cross section, while the outer wall is formed in a polygonal shape in cross section (for example, a regular 27-sided shape). By forming the outer wall of the outer resistor 21 into a polygonal cross section in this way, the outer wall of the outer resistor 21 is provided with a plurality of corner portions 211 and a flat surface portion 212. Further, as shown in FIG. 4C, the outer and inner walls of the outer resistor 21 have a gradient (for example, 3 degrees) whose diameter gradually decreases from the upstream side to the downstream side with respect to the vertical line segment VL. Gradient) is attached. Here, the diameters of the respective circles connecting the upper end (head) and the lower end corners 211 of the outer wall of the outer resistor 21 are the inner walls of the upper and lower ends of the resistor storage region RS of the tubular body 1, respectively. The diameter is set to match the diameter. A stopper 21a projecting inward is integrally formed on the lower side of the inner wall of the outer resistor 21. The stopper 21a engages with the lower edge of the inner resistor 22 described later to prevent the inner resistor 22 from moving downward. The stoppers 21a are arranged on the inner wall surface of the outer resistor 21 in a circumferential direction (three at intervals of 120 degrees in this example). The stopper 21a suppresses the movement of the inner resistor 22 downward even when the outer resistor 21 and the inner resistor 22 are made of a synthetic resin made of ABS resin having a surface roughness of 0.1 μm or less. It is a thing, not necessarily necessary.
　また、外側抵抗体２１の上端部（頭部）と下端部は、外壁から内壁に向かって窄むような傾斜面２１３，２１４として形成されている。上端部（頭部）の傾斜面２１３の傾斜角度は、後述する内側抵抗体２２の円錐状頭部２２０の傾斜面の傾斜角度と一致するように構成されている。そして、外側抵抗体２１の上端部（頭部）の内壁側には傾斜面２１３と反対方向に傾斜する傾斜面２１５（図４の（ｃ）参照）が形成され、傾斜面２１３と傾斜面２１５との連結部が分水嶺としての峰を形成している。 Further, the upper end (head) and the lower end of the outer resistor 21 are formed as inclined surfaces 213,214 that narrow from the outer wall toward the inner wall. The inclination angle of the inclined surface 213 of the upper end portion (head) is configured to match the inclination angle of the inclined surface of the conical head 220 of the inner resistor 22, which will be described later. Then, an inclined surface 215 (see FIG. 4C) that inclines in the direction opposite to the inclined surface 213 is formed on the inner wall side of the upper end portion (head) of the outer resistor 21, and the inclined surface 213 and the inclined surface 215 are formed. The connection with the watershed forms a peak as a watershed.
　図５に示すように、内側抵抗体２２は円錐状頭部２２０を備えている。この円錐状頭部２２０の傾斜角度は前記炭酸水導入部材３の漏斗状の拡開部３２の傾斜角度と一致している。内側抵抗体２２は外壁が横断面多角形状（例えば、正２１角形）であって、複数の角部２２１と平面部２２２とを備えた多角柱として形成されている。そして、内側抵抗体２２の外壁には、垂直線分ＶＬに対し、上流側から下流側に向かって径が漸次縮小する勾配（例えば、３度の勾配）が付けられている。前記内側抵抗体２２の外壁の角部２２１の上端（言い換えれば円錐状頭部２２０の底部）を結ぶ円の径は、外側抵抗体２１の内壁の上端、すなわち、外側抵抗体２１における上端部の峰を形成する傾斜面２１５の低位側の径と一致する径に定められている。従って、内側抵抗体２２の外壁の角部２２１の上端（円錐状頭部２２０の底部）を結ぶ円の径は、外側抵抗体２１の内壁における上端の峰の径より僅かに小さい径に定められている。 As shown in FIG. 5, the inner resistor 22 includes a conical head 220. The inclination angle of the conical head 220 coincides with the inclination angle of the funnel-shaped expansion portion 32 of the carbonated water introduction member 3. The outer wall of the inner resistor 22 has a polygonal cross-sectional shape (for example, a regular 21-sided shape), and is formed as a polygonal column having a plurality of square portions 221 and a flat surface portion 222. The outer wall of the inner resistor 22 is provided with a gradient (for example, a gradient of 3 degrees) whose diameter gradually decreases from the upstream side to the downstream side with respect to the vertical line segment VL. The diameter of the circle connecting the upper ends of the corners 221 of the outer wall of the inner resistor 22 (in other words, the bottom of the conical head 220) is the upper end of the inner wall of the outer resistor 21, that is, the upper end of the outer resistor 21. The diameter is set to match the diameter on the lower side of the inclined surface 215 forming the peak. Therefore, the diameter of the circle connecting the upper ends of the corners 221 of the outer wall of the inner resistor 22 (the bottom of the conical head 220) is set to be slightly smaller than the diameter of the peak at the upper end of the inner wall of the outer resistor 21. ing.
　内側抵抗体２２はこの実施の形態では中実として形成されているが、図７の変形例に示したように中空であってもよいものである。図７に示した内側抵抗体２２Ａはその内部が十字状の補強壁２２３を残した中空として形成されている点を除けば、図５に示した内側抵抗体２２と同様の構成を有するものである。すなわち、内側抵抗体２２Ａは円錐状頭部２２０Ａを備え、外壁に複数の角部２２１Ａと平面部２２２Ｂとを備えた多角柱状に形成されている。そして、内側抵抗体２２Ａの外壁には、垂直線分ＶＬに対し、上流側から下流側に向かって径が漸次縮小する勾配（例えば、３度の勾配）が付けられている。 Although the inner resistor 22 is formed as a solid in this embodiment, it may be hollow as shown in the modified example of FIG. 7. The inner resistor 22A shown in FIG. 7 has the same configuration as the inner resistor 22 shown in FIG. 5, except that the inside thereof is formed as a hollow leaving a cross-shaped reinforcing wall 223. is there. That is, the inner resistor 22A is formed in a polygonal columnar shape having a conical head 220A and a plurality of corner portions 221A and flat surface portions 222B on the outer wall. The outer wall of the inner resistor 22A is provided with a gradient (for example, a gradient of 3 degrees) whose diameter gradually decreases from the upstream side to the downstream side with respect to the vertical line segment VL.
　図６に示すように、前記抵抗体２は中空管状の外側抵抗体２１の上端開口から内側抵抗体２２を入れ子式に挿入することにより一体化される。外側抵抗体２１に挿入される内側抵抗体２２は、外側抵抗体２１の内壁面に設けたところの内側に向けて突出するストッパ２１ａに内側抵抗体２２の下縁が当接するまで押し込まれる。この場合、内側抵抗体２２の下縁が外側抵抗体２１のストッパ２１ａに当接するまで下降する過程で内側抵抗体２２の複数の角部２２１が外側抵抗体２１の内壁に徐々に接するようになり、内側抵抗体２２の下縁が外側抵抗体２１のストッパ２１ａに当接した時点において内側抵抗体２２の複数の角部２２１は外側抵抗体２１の内壁に密接する。そして、内側抵抗体２２の下縁が外側抵抗体２１のストッパ２１ａに当接した状態では、外側抵抗体２１の上端部（頭部）の傾斜面の傾斜角度が内側抵抗体２２の円錐状頭部２２０の傾斜面の傾斜角度と一致するように構成されているので、抵抗体２の頭部は全体として円錐状をなし、この円錐状の頭部の傾斜角度は炭酸水導入部材３の漏斗状の拡開部３２の傾斜角度と一致している。この場合、内側抵抗体２２の円錐状頭部２２０の底部は外側抵抗体２１の内壁の上端（外側抵抗体２１における上端部の峰を形成する傾斜面２１５の低位側）に位置していることから、外側抵抗体２１の上端部の峰（傾斜面２１５と傾斜面２１３との連結部）より沈み込む態様で段差（図６参照）を有しているものである。 As shown in FIG. 6, the resistor 2 is integrated by inserting the inner resistor 22 in a nested manner from the upper end opening of the hollow tubular outer resistor 21. The inner resistor 22 inserted into the outer resistor 21 is pushed into the stopper 21a that protrudes inward at the inner wall surface of the outer resistor 21 until the lower edge of the inner resistor 22 comes into contact with the stopper 21a. In this case, the plurality of corners 221 of the inner resistor 22 gradually come into contact with the inner wall of the outer resistor 21 in the process of descending until the lower edge of the inner resistor 22 abuts on the stopper 21a of the outer resistor 21. When the lower edge of the inner resistor 22 comes into contact with the stopper 21a of the outer resistor 21, the plurality of corner portions 221 of the inner resistor 22 are in close contact with the inner wall of the outer resistor 21. When the lower edge of the inner resistor 22 is in contact with the stopper 21a of the outer resistor 21, the inclination angle of the inclined surface of the upper end (head) of the outer resistor 21 is the conical head of the inner resistor 22. Since it is configured to match the inclination angle of the inclined surface of the portion 220, the head of the resistor 2 has a conical shape as a whole, and the inclination angle of the conical head is the funnel of the carbonated water introduction member 3. It coincides with the inclination angle of the expanded portion 32 of the shape. In this case, the bottom of the conical head 220 of the inner resistor 22 is located at the upper end of the inner wall of the outer resistor 21 (the lower side of the inclined surface 215 forming the peak of the upper end of the outer resistor 21). Therefore, the outer resistor 21 has a step (see FIG. 6) in a manner of sinking from the peak at the upper end (connecting portion between the inclined surface 215 and the inclined surface 213).
　このように、中空の外側抵抗体２１に内側抵抗体２２を入れ子式に挿入して一体化された抵抗体２には、内側抵抗体２２の全ての平面部（外壁面）２２２と外側抵抗体２１の内壁面との間に隙間（不図示）が横断面円の周方向に複数形成され、これらの周方向に複数形成された隙間が圧力減圧部を構成するのは特許文献２に記載されたとおりである。 In this way, the inner resistor 22 is inserted into the hollow outer resistor 21 in a nested manner and integrated into the resistor 2, and all the flat surfaces (outer wall surface) 222 and the outer resistor of the inner resistor 22 are integrated. It is described in Patent Document 2 that a plurality of gaps (not shown) are formed between the inner wall surface of the 21 and the inner wall surface of the cross section in the circumferential direction of the cross-sectional circle, and the plurality of gaps formed in the circumferential direction form a pressure reducing portion. That's right.
　斯様に組立てられた抵抗体２は、中空の管状体１の上端開口から管状体１の内部に入れ子式に挿入して抵抗体収納領域ＲＳに装着される。中空の管状体１に挿入される抵抗体２は、中空の管状体１の内壁面に設けたところの内側に向けて突出するストッパ１ａに抵抗体２を構成する外側抵抗体２１の下縁が当接するまで押し込まれる。ここで、管状体１の内壁における抵抗体収納領域ＲＳの下端域に設けたストッパ１ａの位置は、管状体１に抵抗体２を入れ子式に挿入した際、抵抗体２の角部（外側抵抗体２１の外壁の角部２１１）が管状体１の内壁面と密接し、抵抗体２が管状体１に固定された状態において抵抗体２を構成する外側抵抗体２１の下縁に係合する場所に定められているものである。従って、外側抵抗体２１の下端が中空の管状体１のストッパ１ａに当接するまで下降する過程で外側抵抗体２１の複数の角部２１１が中空の管状体１の内壁に徐々に接するようになり、外側抵抗体２１の下縁が中空の管状体１のストッパ１ａに当接した時点において外側抵抗体２１の複数の角部２１１は中空の管状体１の内壁に密接する。このように、抵抗体２を管状体１の内部に入れ子式に挿入して一体化すると、抵抗体２の全ての平面部（外側抵抗体２１の全ての平面部２１２）と管状体１の内壁面との間に隙間（不図示）が横断面円の周方向に複数形成され、これらの周方向に複数形成された隙間が圧力減圧部を構成するのは特許文献２に記載されたとおりである。 The resistor 2 thus assembled is nested inside the tubular body 1 through the upper end opening of the hollow tubular body 1 and is mounted on the resistor storage area RS. The resistor 2 inserted into the hollow tubular body 1 has a stopper 1a that projects inwardly provided on the inner wall surface of the hollow tubular body 1 and has a lower edge of the outer resistor 21 that constitutes the resistor 2. Pushed in until it touches. Here, the position of the stopper 1a provided in the lower end region of the resistor storage area RS on the inner wall of the tubular body 1 is the corner portion (outer resistance) of the resistor 2 when the resistor 2 is inserted into the tubular body 1 in a nested manner. The corners 211) of the outer wall of the body 21 are in close contact with the inner wall surface of the tubular body 1 and engage with the lower edge of the outer resistor 21 constituting the resistor 2 in a state where the resistor 2 is fixed to the tubular body 1. It is defined in the place. Therefore, in the process of descending until the lower end of the outer resistor 21 comes into contact with the stopper 1a of the hollow tubular body 1, the plurality of corners 211 of the outer resistor 21 gradually come into contact with the inner wall of the hollow tubular body 1. When the lower edge of the outer resistor 21 comes into contact with the stopper 1a of the hollow tubular body 1, the plurality of corners 211 of the outer resistor 21 come into close contact with the inner wall of the hollow tubular body 1. In this way, when the resistor 2 is inserted into the tubular body 1 in a nested manner and integrated, all the flat surfaces of the resistor 2 (all the flat portions 212 of the outer resistor 21) and the inside of the tubular body 1 are integrated. As described in Patent Document 2, a plurality of gaps (not shown) are formed between the wall surface and the wall surface in the circumferential direction of the cross-sectional circle, and the plurality of gaps formed in the circumferential direction form the pressure reducing portion. is there.
　かかる構成の飲料供給ノズルＮＺにおいては、炭酸水導入管路３１（図１参照）に圧送された炭酸水は、抵抗体２（内側抵抗体２２）の円錐状頭部２２０に沿って均等に分散されたうえで内側抵抗体２２の全ての平面部２２２と外側抵抗体２１の内壁面との間に形成された隙間（圧力減圧部）、および抵抗体２（外側抵抗体２１）の全ての平面部２１２と管状体１の内壁面との間に形成された隙間（圧力減圧部）とを通過して吐出口１１から吐出される。 In the beverage supply nozzle NZ having such a configuration, the carbonated water pumped into the carbonated water introduction pipeline 31 (see FIG. 1) is evenly dispersed along the conical head 220 of the resistor 2 (inner resistor 22). The gap (pressure reducing part) formed between all the flat surfaces 222 of the inner resistor 22 and the inner wall surface of the outer resistor 21 and all the flat surfaces of the resistor 2 (outer resistor 21). It is discharged from the discharge port 11 through a gap (pressure reducing part) formed between the portion 212 and the inner wall surface of the tubular body 1.
　ここで、管状体１と外側抵抗体２１および内側抵抗体２２が合成樹脂材料からなり、合成樹脂材料の表面（凹凸面）に炭酸水が衝突することによって炭酸ガスの分離が生じるが、表面粗さが０．１μｍを超えるＰＡ樹脂、ＰＰＥ樹脂、ＰＰ樹脂等の合成樹脂材料の場合の炭酸ガスの分離に対し、表面粗さが０．１μｍ以下のＡＢＳ樹脂からなる場合の炭酸ガスの分離の少ないことが発明者の実験により得られている。また、表面粗さが０．１μｍ以下のＡＢＳ樹脂からなる場合、管状体１と外側抵抗体２１および外側抵抗体２１と内側抵抗体２２との間の摩擦抵抗が小さいことから、炭酸水導入管路３１から炭酸水が圧送されることにより外側抵抗体２１および内側抵抗体２２に作用するところの、外側抵抗体２１および内側抵抗体２２を下方に移動させるように加わる圧力によって外側抵抗体２１および内側抵抗体２２が下方に移動するのを助長するが、管状体１の内壁に設けたストッパ１ａおよび外側抵抗体２１に設けたストッパ２１ａによって外側抵抗体２１および内側抵抗体２２の下方への移動が阻止される。従って、抵抗体２と中空の管状体１とを構成する合成樹脂材料を表面粗さが０．１μｍ以下のＡＢＳ樹脂を採用することが可能となり、圧力減圧部によるガスボリュームの低下を抑制することが可能となる。 Here, the tubular body 1, the outer resistor 21, and the inner resistor 22 are made of a synthetic resin material, and carbon dioxide gas is separated by colliding with the surface (concave and convex surface) of the synthetic resin material, but the surface is rough. Separation of carbon dioxide gas in the case of synthetic resin materials such as PA resin, PPE resin, PP resin with a thickness of more than 0.1 μm, whereas separation of carbon dioxide gas in the case of ABS resin with a surface roughness of 0.1 μm or less Less has been obtained by the inventor's experiments. Further, when the surface is made of ABS resin having a surface roughness of 0.1 μm or less, the frictional resistance between the tubular body 1 and the outer resistor 21 and the outer resistor 21 and the inner resistor 22 is small, so that the carbonated water introduction pipe The pressure applied to move the outer resistor 21 and the inner resistor 22 downward, where the carbonated water is pumped from the path 31 and acts on the outer resistor 21 and the inner resistor 22, causes the outer resistor 21 and the inner resistor 22 to move downward. The inner resistor 22 is encouraged to move downward, but the stopper 1a provided on the inner wall of the tubular body 1 and the stopper 21a provided on the outer resistor 21 move the outer resistor 21 and the inner resistor 22 downward. Is blocked. Therefore, it is possible to use an ABS resin having a surface roughness of 0.1 μm or less as the synthetic resin material constituting the resistor 2 and the hollow tubular body 1, and it is possible to suppress a decrease in gas volume due to the pressure reducing portion. Is possible.
　また、この実施の形態の飲料供給ノズルＮＺにおいては、抵抗体２の頭部は炭酸水導入部材の拡開部の傾斜角度と一致するところの全体として円錐状をなし、かつ、内側抵抗体２２の円錐状頭部２２０の底部は外側抵抗体２１の上端部の峰より沈み込む態様で段差を有していることから、炭酸水導入管路３１から炭酸水が導入された当初においても内側抵抗体２２と外側抵抗体２１との間に横断面円の周方向に複数形成された圧力減圧部（隙間）においては前記段差によって円錐状の傾斜面を流れる炭酸水が堰き止められる態様で圧力減圧部（隙間）への炭酸水の流入が連続するため、圧力の急変を抑制、つまり、段差がない場合には圧力減圧部（隙間）への炭酸水の流入が途切れ途切れとなって圧力が急変して炭酸ガスの分離によるガスボリュームの低下を惹起するのに対し、圧力減圧部（隙間）への炭酸水の流入が連続するために圧力の急変を抑制して炭酸ガスの分離によるガスボリュームの低下を抑制することが可能となる。 Further, in the beverage supply nozzle NZ of this embodiment, the head of the resistor 2 has a conical shape as a whole where it coincides with the inclination angle of the expanded portion of the carbonated water introduction member, and the inner resistor 22 is formed. Since the bottom of the conical head 220 of the above has a step in a manner of sinking from the peak at the upper end of the outer resistor 21, the inner resistance even at the beginning when the carbonated water is introduced from the carbonated water introduction pipeline 31. In the pressure-reducing portions (gap) formed between the body 22 and the outer resistor 21 in the circumferential direction of the cross-sectional circle, the pressure-reducing portion is such that the carbonated water flowing on the conical inclined surface is blocked by the step. Since the inflow of carbonated water into the part (gap) is continuous, sudden changes in pressure are suppressed, that is, when there is no step, the inflow of carbonated water into the pressure reducing part (gap) is interrupted and the pressure suddenly changes. As a result, the gas volume decreases due to the separation of carbon dioxide gas, while the continuous inflow of carbonated water into the pressure reducing part (gap) suppresses sudden changes in pressure and the gas volume due to the separation of carbon dioxide gas. It is possible to suppress the decrease.
　前述したように、この実施の形態にかかる飲料供給ノズルＮＺにおいては、冷水と炭酸ガスとを混合して生成された高圧の炭酸水を抵抗体２により減圧したうえで吐出する飲料供給ノズルＮＺであって、飲料供給ノズルＮＺは、前記高圧の炭酸水が供給される炭酸水導入部材３と、この炭酸水導入部材３を介して導入された炭酸水を他端の吐出口１１から吐出する中空の管状体１と、この管状体１の内部に配設されて管状体１の内壁面と径方向に隣接する外壁面との間に圧力減圧部としての隙間を周方向に複数形成する態様で、前記外壁面若しくは前記管状体の内壁面の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成されてなる抵抗体２とを備え、前記抵抗体２は径方向に分割された多重構造（例えば、外側抵抗体２１と内側抵抗体２２の２重構造）とし、径方向に隣接する内壁面（外側抵抗体２１の内壁面）と外壁面（内側抵抗体２２の外壁面）との間に圧力減圧部としての隙間を周方向に複数形成する態様で、径方向に隣接する内壁面（外側抵抗体２１の内壁面）若しくは外壁面（内側抵抗体２２の外壁面）の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成され、前記中空の管状体１および多重構造の抵抗体２のそれぞれは炭酸水が導入される上流側から炭酸水が吐出される下流側に向かって径が漸次縮小する勾配を備えてなる飲料供給ノズルＮＺにおいて、中空の管状体１の内壁面と多重構造の抵抗体２のうちの径方向に最も外側に位置する抵抗体（外側抵抗体２１）との間に当該抵抗体（外側抵抗体２１）の下降を阻止する下降防止手段（ストッパ１ａ）を設けてなることにより、炭酸水導入部材３から導入された高圧の炭酸水によって抵抗体２が下方へ移動しようとしても、下降防止手段（ストッパ１ａ）により抵抗体２の下降を阻止することができるので、圧力減圧部によるガスボリュームの低下を抑制しつつ、単位時間当たりの炭酸水の通過量を確保することが可能な飲料供給ノズルを提供できるという効果を奏するものである。 As described above, in the beverage supply nozzle NZ according to this embodiment, the beverage supply nozzle NZ that discharges high-pressure carbonated water generated by mixing cold water and carbonated water after decompressing it with the resistor 2. The beverage supply nozzle NZ is a hollow that discharges the carbonated water introduction member 3 to which the high-pressure carbonated water is supplied and the carbonated water introduced through the carbonated water introduction member 3 from the discharge port 11 at the other end. In a mode in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction between the tubular body 1 of the above and the inner wall surface of the tubular body 1 and the outer wall surface adjacent to the inner wall surface in the radial direction. The outer wall surface or the inner wall surface of the tubular body is provided with a resistor 2 having a polygonal cross section and the other having a circular cross section, and the resistor 2 is divided in the radial direction. (For example, a double structure of an outer resistor 21 and an inner resistor 22), and an inner wall surface (inner wall surface of the outer resistor 21) and an outer wall surface (outer wall surface of the inner resistor 22) adjacent to each other in the radial direction. ), In a manner in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction, on the inner wall surface (inner wall surface of the outer resistor 21) or the outer wall surface (outer wall surface of the inner resistor 22) adjacent in the radial direction. One is formed in a polygonal cross section and the other is formed in a circular cross section, and each of the hollow tubular body 1 and the resistor 2 having a multi-layer structure discharges carbonated water from the upstream side where carbonated water is introduced. In the beverage supply nozzle NZ having a gradient in which the diameter gradually decreases toward the downstream side, the inner wall surface of the hollow tubular body 1 and the outermost resistance in the radial direction of the multi-structured resistor 2. By providing a lowering prevention means (stopper 1a) for preventing the lowering of the resistor (outer resistor 21) from the body (outer resistor 21), the high pressure introduced from the carbonated water introduction member 3 is provided. Even if the resistor 2 tries to move downward due to carbonated water, the descent prevention means (stopper 1a) can prevent the resistor 2 from descending, so that the unit time while suppressing the decrease in gas volume due to the pressure reducing unit. This has the effect of providing a beverage supply nozzle capable of ensuring the passage amount of carbonated water per hit.
　なお、前述した実施の形態では、下降防止手段の最良の形態として中空の管状体１の内壁面に設けられたところの、２重構造の抵抗体２のうちの径方向に最も外側に位置する外側抵抗体２１に係合して当該外側抵抗体２１の下降を阻止するストッパ１ａとしたものについて説明したが、外側抵抗体２１の外壁に外方に突出するストッパを形成する一方、管状体の内壁に前記外側抵抗体２１のストッパを受容する溝（上下方向に延在するとともに下方に向かうにしたがって深くなる溝）を形成、或いは中空の管状体１とは別部材からなり、中空の管状体１の内壁面に係合する態様で中空の管状体１に係止されるとともに抵抗体２の下降を阻止する下降阻止部材を設ける等の構成を採用することができるものである。また、前述した実施の形態では、抵抗体２を外側抵抗体２１および内側抵抗体２２からなる２重構造としたものについて説明したが、抵抗体２は２重構造に限らず、２重以上とすることもできるものである。さらに、前述した実施の形態においては、管状体の内壁面を横断面円形状に形成し、外側抵抗体２１と内側抵抗体２２のそれぞれの外壁面を横断面多角形状に形成し、外側抵抗体２１の内壁面を横断面円状に形成したものについて説明したが、管状体の内壁面を横断面多角形状とし、外側抵抗体２１と内側抵抗体２２のそれぞれの外壁面を横断面円形状とし、外側抵抗体２１の内壁面を横断多角形状とすることもできるものである。従って、本発明にかかる飲料供給ノズルは実施の形態に示したものに限定されるものではない。 In the above-described embodiment, it is located on the outermost side in the radial direction of the double-structured resistor 2 provided on the inner wall surface of the hollow tubular body 1 as the best form of the lowering prevention means. Although the stopper 1a that engages with the outer resistor 21 to prevent the outer resistor 21 from descending has been described, the outer wall of the outer resistor 21 is formed with a stopper that projects outward, while the tubular body is formed. A groove (a groove extending in the vertical direction and deepening as it goes downward) is formed on the inner wall to receive the stopper of the outer resistor 21, or the hollow tubular body is made of a member different from the hollow tubular body 1. It is possible to adopt a configuration in which a lowering blocking member is provided to prevent the resistor 2 from lowering while being locked to the hollow tubular body 1 in a manner of engaging with the inner wall surface of 1. Further, in the above-described embodiment, the resistor 2 having a double structure composed of the outer resistor 21 and the inner resistor 22 has been described, but the resistor 2 is not limited to the double structure and may be double or more. You can also do it. Further, in the above-described embodiment, the inner wall surface of the tubular body is formed in a circular shape in cross section, and the outer wall surfaces of the outer resistor 21 and the inner resistor 22 are formed in a polygonal cross section, respectively. Although the inner wall surface of the 21 is formed into a circular cross section, the inner wall surface of the tubular body has a polygonal cross section, and the outer wall surfaces of the outer resistor 21 and the inner resistor 22 have a circular cross section. The inner wall surface of the outer resistor 21 can also have a cross-sectional polygonal shape. Therefore, the beverage supply nozzle according to the present invention is not limited to the one shown in the embodiment.
　ＮＺ…飲料供給ノズル、１…管状体、１ａ…ストッパ（下降防止手段）、２…抵抗体、３…炭酸水導入部材、１１…吐出口、２１…外側抵抗体、２１ａ…ストッパ、２２…内側抵抗体、３１…炭酸水導入管路、２１１，２２１…角部、２１２，２２２…平面部。 NZ ... Beverage supply nozzle, 1 ... Tubular body, 1a ... Stopper (lowering prevention means), 2 ... Resistor, 3 ... Carbonated water introduction member, 11 ... Discharge port, 21 ... Outer resistor, 21a ... Stopper, 22 ... Inner Resistor, 31 ... Carbonated water introduction pipeline, 211,221 ... Corner, 212, 222 ... Flat surface.

Claims (5)

  1. 　冷水と炭酸ガスとを混合して生成された高圧の炭酸水を減圧したうえで吐出する飲料供給ノズルであって、
    　前記高圧の炭酸水が供給される炭酸水導入部材と、
    　この炭酸水導入部材を介して導入された炭酸水を他端の吐出口から吐出する中空の管状体と、
    　この管状体の内部に配設されて管状体の内壁面と径方向に隣接する外壁面との間に圧力減圧部としての隙間を横断面周方向に複数形成する態様で、前記外壁面若しくは前記管状体の内壁面の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成されてなる抵抗体と
    　を備え、
    　前記抵抗体は径方向に分割された多重構造とし、径方向に隣接する内壁面と外壁面との間に圧力減圧部としての隙間を周方向に複数形成する態様で、径方向に隣接する内壁面若しくは外壁面の一方が横断面多角形状に形成されると共に他方が横断面円形状に形成され、
    　前記中空の管状体および多重構造の抵抗体のそれぞれは炭酸水が導入される上流側から炭酸水が吐出される下流側に向かって径が漸次縮小する勾配を備えてなり、
    　中空の管状体と多重構造の抵抗体のうちの径方向に最も外側に位置する抵抗体との間に当該抵抗体の下降を阻止する下降防止手段を設けてなることを特徴とする飲料供給ノズル。     A beverage supply nozzle that decompresses and discharges high-pressure carbonated water generated by mixing cold water and carbon dioxide gas.
    The carbonated water introduction member to which the high-pressure carbonated water is supplied, and
    A hollow tubular body that discharges carbonated water introduced through the carbonated water introduction member from the discharge port at the other end, and
    The outer wall surface or the outer wall surface is provided in a manner in which a plurality of gaps as pressure reducing portions are formed in the circumferential direction of the cross section between the inner wall surface of the tubular body and the outer wall surface adjacent to each other in the radial direction. It is provided with a resistor in which one of the inner wall surfaces of the tubular body is formed in a polygonal cross section and the other is formed in a circular cross section.
    The resistor has a multi-layered structure divided in the radial direction, and a plurality of gaps as pressure reducing portions are formed in the circumferential direction between the inner wall surface and the outer wall surface adjacent to each other in the radial direction. One of the wall surface or the outer wall surface is formed in a polygonal cross section and the other is formed in a circular cross section.
    Each of the hollow tubular body and the resistor having a multi-layer structure has a gradient in which the diameter gradually decreases from the upstream side where the carbonated water is introduced to the downstream side where the carbonated water is discharged.
    A beverage supply nozzle characterized in that a lowering prevention means for preventing the lowering of the resistor is provided between the hollow tubular body and the resistor located on the outermost side in the radial direction among the resistors having a multi-layer structure. ..
  2. 　請求項１に記載の飲料供給ノズルにおいて、下降防止手段は、中空の管状体の内壁面に設けられ、多重構造の抵抗体のうちの径方向に最も外側に位置する抵抗体に係合して当該抵抗体の下降を阻止するストッパであることを特徴とする飲料供給ノズル。 In the beverage supply nozzle according to claim 1, the lowering prevention means is provided on the inner wall surface of the hollow tubular body and engages with the outermost resistor in the radial direction among the resistors having a multi-layer structure. A beverage supply nozzle characterized by being a stopper that prevents the resistor from descending.
  3. 　請求項１に記載の飲料供給ノズルにおいて、中空の管状体および抵抗体は表面粗さが０．１μｍ以下の合成樹脂からなることを特徴とする飲料供給ノズル。 The beverage supply nozzle according to claim 1, wherein the hollow tubular body and the resistor are made of a synthetic resin having a surface roughness of 0.1 μm or less.
  4. 　請求項３に記載の飲料供給ノズルにおいて、中空の管状体および抵抗体を構成する合成樹脂はＡＢＳ樹脂であることを特徴とする飲料供給ノズル。 The beverage supply nozzle according to claim 3, wherein the synthetic resin constituting the hollow tubular body and the resistor is ABS resin.
  5. 　請求項１に記載の飲料供給ノズルにおいて、炭酸水導入部材は、炭酸水導入管路が上方に突出して形成されると共に下方が炭酸水導入管路の軸線を中心に漏斗状に拡開した拡開部として形成されてなり、多重構造の抵抗体の頭部は前記炭酸水導入部材の拡開部の傾斜角度と一致するところの、全体として円錐状であって、多重構造の抵抗体のうち、内側に位置する抵抗体の頭部は外側の抵抗体の頭部より沈み込む態様で段差を有することを特徴とする飲料供給ノズル。 In the beverage supply nozzle according to claim 1, the carbonated water introduction member is formed so that the carbonated water introduction pipeline projects upward and the lower portion expands in a funnel shape around the axis of the carbonated water introduction pipeline. Of the multi-structured resistors, which are formed as open portions, the head of the multi-layered resistor is conical as a whole and coincides with the inclination angle of the expanded portion of the carbonated water introduction member. A beverage supply nozzle characterized in that the head of the resistor located inside has a step in a manner of sinking from the head of the resistor on the outside.
PCT/JP2020/037007 2019-10-03 2020-09-29 Beverage dispensing nozzle WO2021065947A1 (en)

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JP2016172580A (en) * 2015-03-17 2016-09-29 富士電機株式会社 Beverage feed nozzle
JP2018118790A (en) * 2018-05-07 2018-08-02 富士電機株式会社 Beverage supply nozzle

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JP6737589B2 (en) * 2015-12-07 2020-08-12 ホシザキ株式会社 Carbonated water pouring valve

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GB803438A (en) * 1955-12-02 1958-10-22 Gaskell & Chambers Ltd Improvements in or relating to valves for controlling the delivery of liquids under pressure
JP2016172580A (en) * 2015-03-17 2016-09-29 富士電機株式会社 Beverage feed nozzle
JP2018118790A (en) * 2018-05-07 2018-08-02 富士電機株式会社 Beverage supply nozzle

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