JP2016117502A - Carbonated water dispensing valve and drinking water supply device using the valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbonated water dispensing valve which stops drop of carbon dioxide volume by decompressing carbonated water surely, and which can stabilize a flow rate of the carbonated water, and a drinking water supply device using the valve.SOLUTION: At one part of a lower end 14d of an outer cone 14b, a slit 30 dented toward an upper end of the outer cone 14b is formed. A peripheral edge part of a flow straightening part upper part 16 comes into contact with the lower end 14d of the outer cone 14b; however, there is the case where a flow passage in which carbonated water can flow cannot be secured between the lower end 14d of the outer cone 14b and the flow straightening part upper part 16, due to a dimension error between components, the play of the outer cone 14b and the like. Even on such occasions, by the slit 30 being formed at one part of the lower end 14d of the outer cone 14b, an opening 40 is constituted between the outer cone 14b and the flow straightening part upper part 16, the carbonated water can flow in the opening 40, and the flow rate of the carbonated water is stabilized.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a carbonated water pouring valve and a drinking water supply apparatus using the valve.

  A post-mix valve of a drinking water supply device for supplying carbonated drinking water, that is, a carbonated water dispensing valve, is provided in a carbonated water passage in the valve body and a beverage stock solution passage such as syrup, and a lower end of the valve body. The carbonated water discharge port for mixing and pouring carbonated water from the carbonated water passage and beverage stock solution from the beverage stock solution passage into the nozzle, and dispensing carbonated water drink from the carbonated beverage discharge port The thing of the structure to perform is common. When mixing carbonated water and beverage stock solution in the carbonated water pouring valve, do not pass carbonated water from the carbonated water passage through the decompression mechanism, and directly discharge it before the carbonated beverage discharge port to mix with the beverage stock solution. Along with the pressure drop of carbonated water, the carbonated water is strongly shaken and the coupling between carbon dioxide and water is loosened, disturbed, and a large amount of carbon dioxide dissolved in the water escapes at once. The concentration decreases, that is, the loss of carbon dioxide volume increases. Therefore, the drinking water supply device requires a decompression device for decompressing carbonated water.

  A conventional carbonated water pouring valve and a drinking water supply device using this valve are described in Patent Document 1. The carbonated water pouring valve described in Patent Document 1 has a mesh-like narrow groove on the outer peripheral wall surface in a cylindrical space provided so that the direction of the central axis of the cylinder coincides with the vertical direction of the valve body. A decompression device is provided in which the provided cylindrical cone is inserted and an annular gap formed between the inner peripheral wall surface of the cylindrical space and the outer peripheral wall surface of the cylindrical cone is used as a decompression passage. And by flowing carbonated water to the decompression device, the carbon dioxide volume can be kept at a high concentration and can be made to flow to the carbonated beverage outlet below.

Japanese Patent No. 3469024

  The cylindrical space portion is a resin molded product, and its cross-sectional area increases as it approaches the carbonated beverage outlet. Therefore, the inner peripheral wall surface of the cylindrical space portion and the cylindrical cone have an annular and substantially tangential contact between the inner peripheral wall surface of the cylindrical space portion and the outer peripheral wall surface near the upper end of the cylindrical cone. Water flows into the annular gap through a slight gap formed by the inner circumferential wall surface of the cylindrical space, the arc portion at the upper end of the outer circumferential wall surface of the cylindrical cone, and the mesh-like narrow groove. However, when the molding state of the cylindrical space portion is poor, the cross section perpendicular to the axial direction of the cylindrical space portion may be substantially elliptical. In this case, a gap larger than a slight gap is generated between the inner peripheral wall surface of the cylindrical space portion and the outer peripheral wall surface of the cylindrical cone due to the difference in cross-sectional shape between the cylindrical space portion and the cylindrical cone. Since the water does not pass through the gap and does not pass through the slight gap, there is a problem that the pressure reduction of the carbonated water cannot be sufficiently performed and the reduction of the carbon dioxide gas volume cannot be prevented.

  The present invention has been made to solve such problems, and is a carbonated water discharge valve that can reliably reduce the volume of carbonated water by reducing the pressure of carbonated water and stabilize the flow rate of carbonated water. And it aims at providing the drinking water supply apparatus using this valve | bulb.

A carbonated water dispensing valve according to the present invention includes a carbonated water supply valve that opens and closes a carbonated water passage, a valve body that includes a beverage stock solution supply valve that opens and closes a beverage stock solution passage, A valve lever for opening and closing a supply valve for opening and closing the beverage stock solution passage, and a nozzle for mixing and pouring carbonated water supplied from the carbonated water passage and beverage stock solution supplied from the beverage stock solution passage at the carbonated beverage discharge port A cylindrical space provided in the valve body and communicating with the carbonated water passage, a cylindrical cone inserted into the cylindrical space directly above the carbonated drinking water discharge port, and formed immediately above the cylindrical cone. In a carbonated water pouring valve having a carbonated water introduction space part where one end of the water passage is open, and a rectification part provided below the cylindrical cone in the cylindrical space part, the cylindrical cone is inside thereof. Carbonated water A decompression device having a decompression passage communicating between the space portion and the carbonated beverage discharge port; a narrow groove is provided on a wall surface of the decompression passage; and a rectifying portion and a cylindrical cone are provided at a lower end of the cylindrical cone. A slit forming an opening is formed between them in contact with each other.
The cylindrical cone is composed of a cylindrical outer cone and a cylindrical inner cone located inside the outer cone, and a gap formed between the outer peripheral wall surface of the inner cone and the inner peripheral wall surface of the outer cone. As a decompression passage, the outer peripheral wall surface of the outer cone and the inner peripheral wall surface of the outer cone may be parallel.

  In the drinking water supply device according to the present invention, a carbonated water supply pipe for supplying carbonated water from a carbonator is branched into a plurality of branch pipes, and any one of the carbonated water extraction valves described above is used. By differentiating or removing the cones, the concentration of the carbonated carbonated water is varied, and a beverage stock solution supply pipe is connected to each carbonated water dispenser valve so that beverages having a plurality of carbonated water concentrations can be dispensed.

  According to this invention, by including a pressure reducing device including a pressure reducing passage communicating between the carbonated water introduction space portion and the carbonated drinking water discharge port inside the cylindrical cone, and by providing a narrow groove on the wall surface of the pressure reducing passage, The surface area of the decompression passage is increased, and by flowing carbonated water through the decompression passage with a large surface area, the carbonated water flows out while being slowly and gently decompressed, so that the carbonated water can be reliably decompressed. Can be prevented. Moreover, the slit which comprises an opening part between them in the state which the rectification | straightening part and the cylindrical cone contacted is formed in the lower end of the cylindrical corn, between the cylindrical corn and the rectification part. Since the flow path of carbonated water is not blocked, the flow rate of carbonated water can be stabilized.

It is front sectional drawing of the carbonated water extraction valve | bulb which concerns on embodiment of this invention. It is side surface sectional drawing of the carbonated water extraction valve | bulb which concerns on embodiment of this invention. It is a partial expanded sectional view of the carbonated water extraction valve | bulb which concerns on embodiment of this invention. It is a front view of the rectification | straightening part provided in the carbonated water extraction valve | bulb which concerns on embodiment of this invention. It is a bottom view of the rectification | straightening part provided in the carbonated water extraction valve | bulb which concerns on embodiment of this invention. It is front sectional drawing of the cylindrical cone provided in the carbonated water extraction valve | bulb which concerns on embodiment of this invention. It is a front view of the inner cone provided in the carbonated water extraction valve | bulb which concerns on embodiment of this invention. It is the schematic of the drinking water supply apparatus which concerns on embodiment of this invention.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
A carbonated water dispensing valve according to an embodiment of the present invention is shown in FIG. The valve body 1 is a valve body of a carbonated water dispensing valve of a drinking water supply device, and has a carbonated water passage 3 and a beverage stock solution passage 4 such as syrup and liquor inside. Further, a supply valve (not shown) for opening and closing these passages is provided in the middle of the carbonated water passage 3 and the beverage stock solution passage 4. These supply valves are configured to be opened by operating the valve lever 2, for example, by pressing the valve lever 2 to the right with a cup held in FIG. In FIG. 1, the side where the valve lever 2 is provided with respect to the valve body 1 is the lower side of the drinking water supply device and the carbonated water dispensing valve.

  The valve body 1 is formed with a cylindrical cylindrical space portion 10 in which the axial direction coincides with the vertical direction of the drinking water supply device and the carbonated water dispensing valve, and the inside thereof is directly connected to the supply valve. A tubular beverage stock solution supply pipe 5 extends downward. Further, the top surface 10a of the cylindrical space portion 10 is inclined from the right to the left in FIG. In addition, above the cylindrical space portion 10, the carbonated water passage 3 is opened from the tangential direction of the cylindrical space portion 10 to constitute a carbonated water introduction space portion 11. Since the carbonated water introduction space portion 11 is configured as described above, when the carbonated water is guided to the carbonated water introduction space portion 11, it is supplied so as to draw a circle. The lower portion of the outer peripheral wall of the portion constituting the cylindrical space portion 10 has a shape protruding downward from the valve body 1 and is configured as a base portion 7 that engages with a nozzle 22 provided below the valve body 1. Has been. The nozzle 22 has a substantially cylindrical shape, and a fitting hole 23 that fits into the base portion 7 is formed in the vicinity of the upper end of the inner peripheral surface thereof. The nozzle 22 includes a curved stepped portion 24 below the fitting hole 23, and the curved stepped portion 24 has a nozzle shape when the cross section of the nozzle 22 along the axial direction of the cylindrical space portion 10 is viewed. The diameter of the inner peripheral wall surface of 22 becomes smaller as it approaches the lower end of the nozzle 22 so as to draw a hyperbola, thereby forming a curved stepped portion as a whole. A carbonated drinking water discharge port 25 is formed below the curved stepped portion 24.

  Since the wall part which comprises the cylindrical space part 10 is a resin molded product, the cross section of the inner peripheral wall surface 6 of the cylindrical space part 10 is below with respect to the axis L of the cylindrical space part 10, as shown in FIG. The taper surface has an angle α. As shown in FIG. 1, a cylindrical cone 14 is inserted into the cylindrical space 10 so that the beverage stock solution supply pipe 5 is an axis. The cylindrical cone 14 is configured by combining a cylindrical inner cone 14a and a cylindrical outer cone 14b. That is, the inner cone 14a is provided concentrically inside the outer cone 14b. And the outer cone outer peripheral part 14c and the inner peripheral wall surface 6 of the cylindrical space part 10 are contacting. The outer cone 14b is formed longer in the axial direction than the inner cone 14a.

  A rectification unit 15 is provided below the cylindrical cone 14 in the cylindrical space 10. The rectifying unit 15 has a substantially disk shape, and as shown in FIG. 4, a plurality of semicircular grooves 18 are formed on the outer periphery of the rectifying unit 15, and the beverage stock solution supply pipe 5 is inserted in the center. A rectifying hole 15a is provided for passage. In addition, a plurality of protrusions 17 extending radially from the outer peripheral edge toward the center are provided on the lower surface of the rectifying unit 15. As shown in FIG. 5, the center of the rectifying unit upper part 16 is formed so as to protrude upward with a hyperbola, and the rectifying unit lower part 12 is formed so that the central part protrudes downward with a hyperbola. ing. As shown in FIG. 1, the diameter of the rectifying unit 15 is substantially equal to the diameter of the cylindrical space 10, and the outer periphery of the rectifying unit 15 is in contact with the inner peripheral wall surface 6. And the center part of the rectification | straightening part upper part 16 is contacting the lower end 14j of the inner cone 14a, and the peripheral part of the rectification | straightening part upper part 16 is contacting the lower end 14d of the outer cone 14b. Further, the protrusion 17 is in contact with the curved step portion 24. In other words, the cylindrical cone 14 composed of the inner cone 14 a and the outer cone 14 b is supported by the rectifying unit 15, and the rectifying unit 15 is supported by the curved stepped portion 24, thereby the cylindrical cone 14. Does not fall down.

  The inner cone 14a is provided with an inner cone hole 14e through which a straight tubular beverage stock solution supply pipe 5 is inserted and passed through the center. An inner cone O-ring 8 is provided between the inner cone hole 14 e and the beverage stock solution supply pipe 5. An outer cone O-ring 9 is provided between the outer cone 14 b and the inner peripheral wall surface 6. An inner cone O-ring accommodating portion 14g for providing the inner cone O-ring 8 is provided at a location facing the inner cone hole 14e near the upper end 14k of the inner cone 14a. The outer cone 14b has a cylindrical shape whose diameter is larger than that of the inner cone 14a, and is provided with an outer cone hole 14f having a diameter capable of accommodating the inner cone 14a. An outer cone O-ring housing portion 14h for providing the outer cone O-ring 9 is provided on the outer cone outer peripheral portion 14c near the lower end 14d of the outer cone 14b.

  As shown in FIG. 6, the diameter of the outer cone hole 14f is formed to be slightly larger than the outer diameter of the inner cone 14a. Thereby, a cylindrical gap 20 is formed between the outer peripheral wall surface of the inner cone 14a and the inner peripheral wall surface of the outer cone 14b. The outer peripheral wall surface of the inner cone 14a and the inner peripheral wall surface of the outer cone 14b are parallel to each other, and the sectional shape, that is, the sectional area of the gap 20 is constant from the upper end 14k to the lower end 14j of the inner cone 14a. By configuring the gap 20 in this way, the variation in the gap 20 for each carbonated water dispensing valve is reduced, so that the variation in the flow rate of carbonated water for each drinking water supply device can be suppressed. A slit 30 that is recessed toward the upper end 14m of the outer cone 14b is formed in a part of the lower end 14d of the outer cone 14b. As shown in FIG. 1, the peripheral edge of the rectifying unit upper part 16 contacts the lower end 14d of the outer cone 14b. However, the lower end 14d of the outer cone 14b and the rectifying unit are affected by dimensional errors between parts and play of the outer cone 14b. Although it may not be possible to secure a flow path through which carbonated water can flow between the upper portion 16 and the case, even in such a case, the slit 30 is formed in a part of the lower end 14d of the outer cone 14b. An opening 40 is formed between the outer cone 14b and the rectifying unit upper portion 16, and carbonated water can flow through the opening 40, so that the flow rate of carbonated water is stabilized.

  As shown in FIG. 7, a mesh-like narrow groove 14i is provided on the outer peripheral wall surface of the inner cone 14a. As shown in FIG. 1, the gap 20 and the narrow groove 14i constitute a pressure reducing device in the carbonated water dispensing valve.

Next, the operation of the carbonated water extraction valve according to the embodiment of the present invention will be described.
As shown in FIG. 1, when the valve lever 2 is pushed and the supply valves for opening and closing the carbonated water passage 3 and the beverage stock solution passage 4 in the valve body 1 are opened, the carbonated water passage 3 becomes the carbonated water introduction space. 11 is opened in a tangential direction, so that carbonated water is gently introduced into the carbonated water introduction space 11 while drawing a circle. Therefore, when this carbonated water is introduced, fluctuations that disturb the bond between carbon dioxide and water in the carbonated water are suppressed. The carbonated water introduced into the carbonated water introduction space 11 is provided with the outer cone O-ring 9, so that the outer cone 14 b of the cylindrical cone 14 and the inner peripheral wall surface 6 of the cylindrical space 10 are The inner cone O-ring 8 is provided, so that no leakage occurs between the inner cone 14a of the cylindrical cone 14 and the beverage stock solution supply pipe 5. Therefore, carbonated water is introduced from the carbonated water introduction space 11 into the gap 20.

  The carbonated water flows downward through the gap 20 and the narrow groove 14 i provided in the inner cone 14 a and facing the gap 20. In the decompression device having the decompression passage composed of the annular gap 20 and the narrow groove 14i, as shown in FIG. 6, the gap 20 is annular and has a certain amount in the vertical direction of the drinking water supply device and the carbonated water dispensing valve. Since it has a shape having a length and the surface area of the decompression passage is increased by the narrow groove 14i, as shown in FIG. 1, the carbonated water in the decompression device has a slow flow rate and flows down over a long period of time. Then, it slowly flows out to the rectifying unit 15 while being decompressed. Therefore, there is little fluctuation of the carbonated water in the decompression device, and the disorder of the connection between the carbon dioxide gas and the water in the carbonated water is reduced. Next, the carbonated water passes through the opening 40, is guided by the semicircular groove 18 of the disk-shaped rectifying unit 15, and quietly along the inner peripheral wall surface of the fitting hole 23 of the nozzle 22, and the carbonated drinking water discharge port 25. To flow down. Therefore, the shaking given to the carbonated water flowing down from the decompression device to the carbonated beverage discharge port 25 is suppressed, and the disturbance of the association between the carbon dioxide gas and the water in the carbonated water is reduced. In addition, a gap as a flow path is formed between the lower surface of the rectifying unit 15 and the upper surface of the curved stepped portion 24 in the nozzle 22 by the linear protrusion 17, and the upper surface of the curved stepped portion 24 is circular. By being made into the surface, the flow from the decompression device to the carbonated beverage discharge port 25 is performed more smoothly, and the shaking given to the carbonated water flowing down from the decompression device to the carbonated beverage discharge port 25 is further suppressed. Thus, the disorder of the connection between carbon dioxide and water in the carbonated water is further reduced.

  In this way, carbonated water is supplied from the supply valve on the carbonated water side of the valve body 1 to the carbonated drinking water discharge port 25 while reducing the pressure and preventing the carbon dioxide gas volume from decreasing. On the other hand, the beverage stock solution is supplied from the supply valve on the beverage stock solution side of the valve body 1 to the carbonated beverage water discharge port 25 via the beverage stock solution supply pipe 5. In the space of the carbonated beverage discharge port 25, the decompressed carbonated water and the beverage stock solution are mixed to generate carbonated drink water having a high concentration and is poured out from the carbonated beverage discharge port 25.

  As described above, the cylindrical cone 14 is provided with a pressure reducing device including a pressure reducing passage that communicates between the carbonated water introduction space 11 and the carbonated drinking water discharge port 25, and includes a narrow groove 14 i on the wall surface of the pressure reducing passage. By increasing the surface area of the decompression passage and flowing carbonated water through the decompression passage with a large surface area, the carbonated water can flow down while being slowly and gently decompressed, so that the carbonated water volume can be reliably reduced. Can be prevented. In addition, the lower end 14d of the outer cone 14b is formed with a slit 30 that forms an opening 40 between the rectifying unit 15 and the outer cone 14b of the cylindrical cone 14 in contact with each other. Since the flow path of the carbonated water is not blocked between the cylindrical cone 14 and the rectifying unit 15, the flow rate of the carbonated water can be stabilized.

  In this embodiment, the inner cone O-ring 8 accommodated in the inner cone O-ring accommodating portion 14g is provided near the upper end 14k of the inner cone 14a, but from between the inner cone 14a and the beverage stock solution supply pipe 5. If the carbonated water does not leak, the vertical position of the inner cone O-ring 8 may be another position determined appropriately. Similarly, the outer cone O-ring 9 accommodated in the outer cone O-ring accommodating portion 14h is provided in the vicinity of the lower end 14d of the outer cone 14b, but the outer cone 14b and the inner peripheral wall surface 6 of the cylindrical space portion 10 are arranged. As long as carbonated water does not leak from between, the vertical position of the outer cone O-ring 9 may be another position determined appropriately.

  In this embodiment, the narrow groove 14i is provided on the outer peripheral wall surface of the inner cone 14a. However, the narrow groove 14i may be provided on the inner peripheral wall surface of the outer cone 14b. The narrow grooves 14i may be provided on both the inner peripheral wall surfaces of the outer cone 14b.

  Although the shape of the outer peripheral wall surface of the outer cone 14b of this embodiment is formed in a shape that matches the cylindrical space portion 10, it is formed in a shape that matches the post-mix valve of other types of drinking water supply devices. May be. Thereby, the cylindrical cone 14 can be used for other models. At this time, since the inner cone 14a and the gap 20 are commonly used in other models, the shape of the decompression device becomes the same. Therefore, while the cylindrical cone 14 is used in other models, the decompression is performed. It is possible to eliminate the trouble of checking the performance of the apparatus for each post-mix valve.

  The material of the cylindrical cone 14 of this embodiment is preferably a material having low water absorption and low thermal conductivity. This is because when a material having high water absorption is used for the cylindrical cone 14, the carbonated water is shaken by the water in the carbonated water being replaced with the air in the cylindrical cone 14 and absorbed by the cylindrical cone 14. There is a possibility that a stable concentration of carbonated water cannot be obtained, and if a material having high thermal conductivity is used for the cylindrical cone 14, the carbonated water is heated in the cylindrical cone 14, and carbon dioxide gas and water There is a possibility that a stable concentration of carbonated water cannot be obtained due to weakening of the bond with.

  In this embodiment, by operating the valve lever 2, the supply valves for opening and closing the carbonated water passage 3 and the beverage stock solution passage 4 are opened to open the carbonated water passage 3 and the beverage stock solution passage 4. The carbonated water passage 3 and the beverage stock solution passage 4 may be opened by the above means. For example, a combination of a switch operated by pressing and a solenoid valve may be used.

  By changing the shape of the gap 20 in the carbonated water dispensing valve of this embodiment, two types of carbonated water dispensing valves for strong and weakly concentrated carbonated water are prepared. You may enable it to supply drinking water of two types of carbon dioxide gas volumes by using a valve. For example, in the example shown in FIG. 8, the drinking water supply device is provided with a tap water cock 51, a water pump 52, an on-off valve 53, a check valve 54, and a carbonator 55. The carbonator 55 is supplied with pressurized water from the water pump 52 and carbon dioxide gas having a predetermined pressure from the carbon dioxide gas cylinder 56 to generate carbonated water having a predetermined concentration. The cooling tank 57 has a cooling pipe 57 a, and the carbonated water supply pipe 58 is provided with branch pipes 58 a and 58 b. Further, carbonated water flow control valves 60, 61, beverage stock solution supply pipes 62, 63, carbonated water dispensing valve 64 for high concentration, carbonated water dispensing valve 65 for weak concentration are provided in the drinking water supply device. Is provided. The carbonated water generated by the carbonator 55 is cooled by the cooling tank 57 and the flow rate is controlled by the flow rate control valves 60 and 61, and a predetermined flow rate of carbonated water is supplied to the carbonated water dispensing valves 64 and 65. Furthermore, a beverage stock solution having a predetermined pressure is supplied to the carbonated water dispensing valves 64 and 65 through beverage stock solution supply pipes 62 and 63. In the carbonated water dispensing valves 64 and 65, the carbonated water supplied after being adjusted to a predetermined concentration is decompressed, and the volume loss of the carbon dioxide gas is adjusted and mixed with the beverage stock solution. In this way, high-concentration carbonated water is supplied from the carbonated beverage discharge port 25 of the high-concentration carbonated water discharge valve 64, and low-concentration carbonated water is output from the carbonated beverage discharge port 25 of the low-concentration carbonated water discharge valve 65. Water is supplied. Thus, by providing the branch pipes 58a and 58b in the carbonated water supply pipe 58 and changing the carbonated water extraction valve connected to the tip thereof, carbonated drinking water having two types of carbon dioxide gas volumes can be easily obtained. In this example, two types of carbonated water extraction valves 64 and 65 for carbon dioxide volume are connected, but three or more types of carbonated water extraction valves for carbon dioxide volume may be provided.

  1 valve body, 2 valve lever, 3 carbonated water passage, 4 beverage stock solution passage, 10 cylindrical space, 11 carbonated water introduction space, 14 cylindrical cone, 14a inner cone, 14b outer cone, 14d (outer cone) Lower end, 14i narrow groove, 15 rectifier, 20 gap, 22 nozzle, 25 carbonated beverage outlet, 30 slit, 40 opening, 55 carbonator, 58 carbonated water supply pipe, 58a, 58b branch, 62, 63 beverage stock supply Piping, 64, 65 Carbonated water extraction valve.

Claims (3)

A valve body provided with a carbonated water supply valve for opening and closing the carbonated water passage and a beverage stock solution supply valve for opening and closing the beverage stock solution passage;
A valve for opening and closing the supply valve for opening and closing the carbonated water passage and a supply valve for opening and closing the beverage stock solution passage;
A nozzle that mixes and pours carbonated water supplied from the carbonated water passage and beverage concentrate supplied from the beverage stock solution passage at a carbonated beverage discharge port;
A cylindrical space provided in the valve body and communicating with the carbonated water passage;
A cylindrical cone inserted into the cylindrical space directly above the carbonated beverage outlet,
A carbonated water introduction space portion formed immediately above the cylindrical cone and having one end of the carbonated water passage opened;
In the carbonated water dispensing valve having a rectifying part provided below the cylindrical cone in the cylindrical space part,
The cylindrical cone includes a decompression device including a decompression passage communicating between the carbonated water introduction space and the carbonated beverage discharge port, and a narrow groove is provided on a wall surface of the decompression passage.
A carbonated water pouring valve in which a slit constituting an opening is formed between the rectifying unit and the cylindrical cone at a lower end of the cylindrical cone. The cylindrical cone is composed of a cylindrical outer cone and a cylindrical inner cone positioned inside the outer cone, and is formed between the outer peripheral wall surface of the inner cone and the inner peripheral wall surface of the outer cone. Provided as the pressure reducing passage,
The carbonated water pouring valve according to claim 1, wherein the outer peripheral wall surface of the outer cone and the inner peripheral wall surface of the outer cone are parallel to each other.   A carbonated water supply pipe for supplying carbonated water from a carbonator is branched into a plurality of branch pipes, and the carbonated water dispensing valve according to claim 1 or 2 is used for each branch pipe. Drinking water supply device that makes it possible to dispense different concentrations of carbonated water by making it different or removing it, and by connecting a beverage stock solution supply pipe to each carbonated water dispensing valve. .

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