JP2016030641A - Carbonated water discharging valve and drinking water supply device using the valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a carbonated water discharging valve capable of preventing carbon dioxide volume from dropping by surely decompressing carbonated water, and a drinking water supply device using the valve.SOLUTION: Carbonated water flows downward in a gap 20 and a narrow groove provided in an inner cone 14a and opposing to the gap 20. In a decompression device having a decompression passage comprising the annular gap 20 and the narrow groove, the gap 20 is annular and has a shape having a certain length in the vertical direction of a drinking water supply device and a carbonated water discharging valve, and a surface area of the decompression passage is made to be large by the narrow groove. Therefore, the flow rate of the carbonated water in the decompression device becomes slow, and the carbonated water takes a long time to flow down, being decompressed slowly and quietly, and flows out to a rectification part 15. Therefore, oscillation of the carbonated water in the decompression device is small, and disturbance of bondage between carbon dioxide and water in the carbonated water is alleviated.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. A carbonated water dispensing valve capable of reliably reducing the pressure of carbonated water to prevent a decrease in the volume of carbon dioxide gas and drinking water using the valve. An object is to provide a supply device.

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 supply valve that opens and closes the carbonated water 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 portion having one end of the water passage open, the cylindrical cone has a decompression passage communicating between the carbonated water introduction space portion and the carbonated beverage discharge port. Decrease with Equipped with a device, vacuum wall to carbonated water dispensing valve narrow grooves are provided in the passage.
The cylindrical cone is composed of a cylindrical outer cone and a cylindrical inner cone located inside the outer cone, and the gap formed between the outer peripheral wall surface of the inner cone and the inner peripheral wall surface of the outer cone is decompressed. Provided as a passage, an inner cone claw that protrudes radially outward of the inner cone is provided on the outer circumferential surface of the inner cone, and an outer cone claw receiving portion that is recessed radially outward of the outer cone is provided on the inner circumferential surface of the outer cone. It may be provided and formed so that an inner cone claw part may get on an outer cone claw receiving part.
The cylindrical cone may be formed of a continuous porous body having a large number of pores formed by sintering a powder material, and the pores of the continuous porous body may constitute the decompression passage and the narrow groove of the decompression device.
An O-ring is provided on the outer peripheral surface of the cylindrical cone. By changing and adjusting the position of the O-ring provided on the outer peripheral surface, the assembling direction of the cylindrical cone in the vertical direction can be arbitrarily changed. May be.

  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.

It is front sectional drawing of the carbonated water extraction valve | bulb which concerns on Embodiment 1 of this invention. It is side surface sectional drawing of the carbonated water extraction valve | bulb which concerns on Embodiment 1 of this invention. It is a partial expanded sectional view of the carbonated water extraction valve | bulb which concerns on Embodiment 1 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 1 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 1 of this invention. It is front sectional drawing of the cylindrical cone provided in the carbonated water extraction valve | bulb which concerns on Embodiment 1 of this invention. It is a front view of the inner cone provided in the carbonated water extraction valve | bulb which concerns on Embodiment 1 of this invention. It is front sectional drawing of the cylindrical cone provided in the carbonated water extraction valve | bulb which concerns on Embodiment 2 of this invention. It is front sectional drawing of the carbonated water extraction valve | bulb which concerns on Embodiment 3 of this invention. It is an expanded sectional view of the cylindrical cone provided in the carbonated water extraction valve | bulb which concerns on Embodiment 3 of this invention. It is front sectional drawing of the cylindrical cone provided in the carbonated water extraction valve | bulb which concerns on Embodiment 3 of this invention. It is the schematic of the drinking water supply apparatus which concerns on the modification of Embodiment 1-4 of this invention.

Embodiment 1 of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
A carbonated water dispensing valve according to Embodiment 1 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 outer cone lower end 14d.

  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. As shown in FIG. 7, a mesh-like fine 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 dispensing valve according to Embodiment 1 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 is guided to the semicircular groove 18 of the disc-shaped rectifying unit 15 and gently flows down to the carbonated beverage outlet 25 along the inner peripheral wall surface of the fitting hole 23 of the nozzle 22. 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.

Embodiment 2
Next, a carbonated water dispensing valve according to Embodiment 2 of the present invention will be described. In the following embodiments, the same reference numerals as those in FIGS. 1 to 7 are the same or similar components, and thus detailed description thereof is omitted.
The carbonated water pouring valve according to Embodiment 2 of the present invention is such that a claw is provided on the inner cone with respect to Embodiment 1.

  In the second embodiment, a cylindrical cone 114 shown in FIG. 8 is inserted into the cylindrical space 10 (see FIG. 1) instead of the cylindrical cone 14 (see FIG. 1) in the first embodiment. The cylindrical cone 114 is configured by combining a cylindrical inner cone 114a and a cylindrical outer cone 114b. That is, the outer cone 114b has a cylindrical shape with a diameter larger than that of the inner cone 114a, and has an outer cone hole 114f having a diameter that can accommodate the inner cone 114a. Since the diameter of the outer cone hole 114f is formed to be slightly larger than the outer diameter of the inner cone 114a, if the inner cone 114a is provided concentrically with the inner cone 114a, the outer cone wall surface of the inner cone 114a A cylindrical gap 20 is formed between the inner circumferential wall surface of the outer cone 114b. Further, a mesh-like narrow groove 114i is provided on the outer peripheral wall surface of the inner cone 114a. The gap 20 and the narrow groove 114i constitute a pressure reducing passage in the valve body 1 (see FIG. 1). An inner cone O-ring accommodating portion 114g for providing the inner cone O-ring 8 (see FIG. 1) is provided at a location facing the inner cone hole 114e in the vicinity of the inner cone upper end 114k. An outer cone O-ring housing portion 114h for providing an outer cone O-ring 9 (see FIG. 1) is provided on the outer cone outer peripheral portion 114c near the outer cone lower end 114d.

  Two inner cone claws 114m are provided on the inner cone 114a so as to face each other with the inner cone hole 114e interposed therebetween. The inner cone claw 114m is formed so as to protrude from the outer peripheral wall surface of the inner cone 114a to the outer side in the radial direction of the inner cone 114a, flush with the inner cone upper end 114k. Further, a gap is formed in the circumferential direction between the two inner cone claws 114m. Further, the length of the inner cone claw 114m in the vertical direction of the drinking water supply device and the carbonated water pouring valve is formed sufficiently smaller than the length of the inner cone 114a in the axial direction. An outer cone claw receiving portion 114o is provided on the inner peripheral wall surface of the outer cone 114b near the upper end 114n of the outer cone. The outer cone claw receiving portion 114o is provided so as to make a round on the circumference of the inner peripheral wall surface of the outer cone 114b, and is provided in a size and shape capable of placing the inner cone claw 114m. Since the inner cone claw 114m is formed so that a gap is formed in the circumferential direction between the two inner cone claws 114m, the upper end portion of the gap 20 is not completely blocked. Other configurations are the same as those of the first embodiment.

Next, the operation of the carbonated water dispensing valve according to Embodiment 2 of the present invention will be described.
The operation of the decompression passage formed by the gap 20 and the narrow groove 114i is the same as that of the first embodiment. In order to maintain the performance of preventing the carbon dioxide gas volume from decreasing in the carbonated water dispensing valve, it is necessary to maintain the performance of the decompression device. Therefore, it is necessary to periodically clean the narrow grooves 114i provided to increase the surface area of the decompression passage of the decompression device to eliminate clogging of the mesh shape and maintain the surface area of the decompression passage. .

  In the first embodiment, as shown in FIG. 1, the cylindrical cone 14 is supported by the rectifying unit 15, and the rectifying unit 15 is supported by the nozzle 22 including the curved stepped portion 24 and falls off downward. In order to remove the cylindrical cone 14 for cleaning, the nozzle 22 is removed, and the valve lever 2 is operated once to cause the carbonated water to flow into the carbonated water introduction space 11. The cylindrical cone 14 fitted to the inner peripheral wall surface 6 of the cylindrical space 10 and the beverage stock solution supply pipe 5 is pushed out by the water flow of carbonated water.

  At this time, when the inner cone 14a and the outer cone 14b of the cylindrical cone 14 are separated by the gap 20, the inner cone 14a fitted in the beverage stock solution supply pipe 5 is fitted in the cylindrical space portion 10. In general, only the inner cone 14a is detached because it is easily detached from the outer cone 14b. If the performance of the decompression device is maintained, only the inner cone 14a needs to be cleaned, but the outer cone 14b may also be cleaned depending on the user's wishes. When the outer cone 14b is removed, it is necessary to operate the valve lever 2 a plurality of times, which increases labor.

  In the second embodiment, as shown in FIG. 8, the inner cone claw 114m is provided in the inner cone 114a, the outer cone claw receiving portion 114o is provided in the outer cone 114b, and the inner cone claw 114m is provided in the outer cone claw receiving portion 114o. When the carbonated water pushes the inner cone 114a downward, the inner cone claw 114m pushes the outer cone claw receiving part 114o downward. As a result, the outer cone 114b is also pushed downward. For this reason, when the valve lever 2 (see FIG. 1) is operated once to discharge carbonated water into the carbonated water introduction space 11 (see FIG. 1), the inner cone 114a and the outer cone 114b are simultaneously removed. It is possible to reduce labor and time for cleaning the cylindrical cone 114 and improve hygiene.

  As described above, the inner cone claw 114m is provided in the inner cone 114a, the outer cone claw receiving portion 114o is provided in the outer cone 114b, and the inner cone claw 114m and the outer cone claw receiving portion 114o are fitted to each other. In addition to the effect of 1, the inner cone 114a and the outer cone 114b can be removed at the same time, so that the labor for cleaning the cylindrical cone 114 can be reduced and the hygiene can be improved.

  In the second embodiment, the two inner cone claws 114m are provided. However, as long as the upper end portion of the gap 20 is not completely blocked, any number of one or more may be used. The shape may be any shape. Further, the outer cone claw receiving portion 114o is provided so as to go around the circumference of the inner peripheral wall surface of the outer cone 114b, but is not limited to this shape, and the inner cone claw 114m can be placed thereon. What is necessary is just to be provided in a magnitude | size and a position.

  In the first and second embodiments, the inner cone O-ring 8 accommodated in the inner cone O-ring accommodating portions 14g and 114g is provided in the vicinity of the inner cone upper ends 14k and 114k, but the inner cones 14a and 114a and the beverage stock solution supply are provided. As long as carbonated water does not leak from the space between the pipes 5, 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 portions 14h and 114h is provided in the vicinity of the outer cone lower ends 14d and 114d, but the outer cones 14b and 114b and the inner periphery of the cylindrical space portion 10 are provided. As long as carbonated water does not leak from between the wall surface 6, the vertical position of the outer cone O-ring 9 may be another position determined appropriately.

  In the first and second embodiments, the narrow grooves 14i and 114i are provided on the outer peripheral wall surfaces of the inner cones 14a and 114a. However, the narrow grooves 14i and 114i may be provided on the inner peripheral wall surfaces of the outer cones 14b and 114b. Alternatively, the narrow grooves 14i and 114i may be provided on both the outer peripheral wall surfaces of the inner cones 14a and 114a and the inner peripheral wall surfaces of the outer cones 14b and 114b.

  Although the shape of the outer peripheral wall surface of the outer cones 14b and 114b of Embodiments 1 and 2 was formed to match the cylindrical space portion 10, it was adapted to the post-mix valve of other types of drinking water supply devices. You may form in a shape. Thereby, the cylindrical cones 14 and 114 can be used for other models. At this time, since the inner cones 14a and 114a and the gap 20 are commonly used in other models, the shape of the decompression device becomes the same, so the cylindrical cones 14 and 114 are used in other models. However, the trouble of confirming the performance of the decompression device for each post-mix valve can be eliminated.

  The material of the cylindrical cones 14 and 114 of Embodiments 1 and 2 is preferably a material that has low water absorption and low thermal conductivity. This is because if a material having high water absorption is used for the cylindrical cones 14 and 114, the water in the carbonated water is replaced with the air in the cylindrical cones 14 and 114 and absorbed by the cylindrical cones 14 and 114, so If the water is shaken and a stable concentration of carbonated water may not be obtained, and if a material having high thermal conductivity is used for the cylindrical cones 14 and 114, the cylindrical cones 14 and 114 There is a possibility that the carbonated water is heated and the bond between the carbon dioxide gas and the water is weakened, so that the carbonated water having a stable concentration cannot be obtained.

Embodiment 3
Next, a carbonated water dispensing valve according to Embodiment 3 of the present invention will be described.
The carbonated water dispensing valve according to the second embodiment of the present invention is obtained by changing the material of the cylindrical cone 14 with respect to the first embodiment.

  As shown in FIG. 9, a cylindrical cone 214 is inserted into the cylindrical space portion 10. The cylindrical cone 214 is integrally formed of a continuous porous body obtained by sintering and molding a powder of plastic, ceramic, metal or the like. As shown in FIG. 10, the continuous porous body has a structure having a gap between powders. Therefore, as shown in FIG. 11, the cylindrical cone 214 has a plurality of continuous gaps as a whole from the cylindrical cone upper end 214n to the cylindrical cone lower end 214j.

  As shown in FIG. 9, the rectifying unit 15 is provided at the lower part of the cylindrical cone 214. The center of the rectifying unit upper part 16 is in contact with the cylindrical cone lower end 214j. The cylindrical cone 214 is provided with a cylindrical cone hole 214e through which the straight tubular beverage stock solution supply pipe 5 is inserted. An inner O-ring 208 is provided between the cylindrical cone hole 214 e and the beverage stock solution supply pipe 5, and an outer O-ring 209 is provided between the cylindrical cone 214 and the inner peripheral wall surface 6. As shown in FIG. 11, an inner O-ring accommodating portion 214g for providing an inner O-ring 208 is provided at a location facing the cylindrical cone hole 214e near the vertical center of the cylindrical cone 214. . An outer O-ring accommodating portion 214h for providing an outer O-ring 209 is provided on the outer periphery 214c of the cylindrical cone near the upper end 214n of the cylindrical cone. Other configurations are the same as those of the first embodiment.

Next, the operation of the carbonated water extraction valve according to Embodiment 3 of the present invention will be described.
The operation until carbonated water is introduced into the carbonated water introduction space 11 is the same as that in the first embodiment. As shown in FIG. 9, the carbonated water introduced into the carbonated water introduction space portion 11 is provided with the outer O-ring 209 so that the outer peripheral wall surface of the cylindrical cone 214 and the inner periphery of the cylindrical space portion 10 are provided. There is no leakage from between the wall surface 6 and the inner O-ring 208 is provided, so that no leakage occurs between the cylindrical cone 214 and the beverage stock solution supply pipe 5.

  As shown in FIG. 11, the inner O-ring 208 and the outer O-ring 209 are provided, and the cylindrical cone 214 is a continuous porous body, and is continuous from the cylindrical cone upper end 214n to the cylindrical cone lower end 214j. By having the gap, the carbonated water introduced into the carbonated water introduction space 11 flows from the cylindrical cone upper end 214n through the gap and flows downward to the cylindrical cone lower end 214j. Since the continuous gap has a certain length and has a shape with a large surface area, it performs the same function as the gap 20 and the narrow groove 14i in the first embodiment. Therefore, the continuous gap constitutes a decompression device having a decompression passage. Therefore, the carbonated water in the continuous gap flows out to the rectifying unit 15 (see FIG. 9) while being slowly and gently decompressed as in the first embodiment. Disturbance of the connection between water and water is reduced. Subsequent operations are the same as those in the first embodiment.

  Since the cylindrical cone 214 is an integrally molded part obtained by sintering powder, it is low in cost and simple in construction. Further, in the sintering molding, the roughness of the molded product can be adjusted by the amount of powder. Depending on the roughness of the molded product, the shape and number of continuous gaps from the cylindrical cone upper end 214n to the cylindrical cone lower end 214j change, and the surface area of the decompression passage changes. Since the carbon dioxide volume of carbonated water flowing through the decompression passage is related to the surface area of the decompression passage, the carbonate gas volume of the carbonated water can be adjusted appropriately. Further, the carbon dioxide volume of carbonated water and the flow of carbonated water also change depending on the sectional area of the inlet of the cylindrical cone 214, that is, the sectional area of the cylindrical cone upper end 214n. The carbon dioxide volume of carbonated water can be appropriately adjusted by adjusting the shape of the shaped cone at the time of molding and adjusting the entrance area to the decompression passage.

  Thus, by providing the cylindrical cone 214 integrally formed with the continuous porous body obtained by sintering and molding the powder inside the cylindrical space portion 10, the same effect as that of the first embodiment can be obtained at low cost. be able to.

  In the third embodiment, the inner O-ring 208 accommodated in the inner O-ring accommodating portion 214g is provided in the vicinity of the center position in the vertical direction of the cylindrical cone 214, but the inner peripheral wall surface of the cylindrical cone 214 and the beverage stock solution As long as carbonated water does not leak from between the supply pipe 5 and the inner cone O-ring 8, the vertical position of the inner cone O-ring 8 may be determined as appropriate. Similarly, the outer O-ring 209 accommodated in the outer O-ring accommodating portion 214h is provided in the vicinity of the cylindrical cone upper end 214n. However, the outer peripheral wall surface of the cylindrical cone 214 and the inner peripheral wall surface 6 of the cylindrical space portion 10 are provided. As long as carbonated water does not leak from between, the position of the outer O-ring 9 in the vertical direction may be another position determined appropriately.

  In addition, by appropriately determining and adjusting the positions where the inner O-ring 208 and the outer O-ring 209 are provided, the cylindrical cone 214 may be assembled and used in the cylindrical space 10 with the vertical direction of the cylindrical cone 214 reversed. . Thus, when the cylindrical cone 214 is assembled with the up-and-down direction as the forward direction and when it is assembled with the up-and-down direction as the reverse direction, the same cylindrical cone 214 is formed. Two types of carbonated water inlet cross-sections can be used: a water inlet cross-sectional area and a carbonated water inlet cross-sectional area on the cylindrical cone lower end 214j side. Since the carbon dioxide volume of carbonated water and the flow of carbonated water can be changed by changing the sectional area of the carbonated water inlet of the cylindrical cone 214, two types of carbonated water dispensing valves with one cylindrical cone 214 are used. Carbonated water with a carbon dioxide gas volume can be caused to flow down to the carbonated beverage discharge port 25, mixed with the beverage stock solution, and discharged from the carbonated beverage discharge port 25 as carbonated beverage water with two types of carbon dioxide gas volumes.

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

  The roughness and inlet cross-sectional area of the cylindrical cone 214 are changed by changing the shape of the gap 20 in the carbonated water extraction valve of the first and second embodiments or in the carbonated water extraction valve of the third and fourth embodiments. Therefore, two types of carbonated water dispensing valves for strong and weakly concentrated carbonated water are prepared, and by using this carbonated water dispensing valve, drinking water with two types of carbon dioxide gas volumes can be supplied. It may be. For example, in the example shown in FIG. 12, 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, 114, 214 cylindrical cone, 14a, 114a inner cone, 14b, 114b outside Cone, 14i, 114i narrow groove, 20 gap, 22 nozzle, 25 carbonated water discharge port, 55 carbonator, 58 carbonated water supply pipe, 58a, 58b branch pipe, 62,63 beverage stock solution supply pipe, 64,65 carbonated water pouring Valve, 114m inner cone claw, 114o outer cone claw receiving part, 209 outer O-ring (O-ring).

Claims (5)

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,
In a carbonated water dispensing valve having a carbonated water introduction space part formed immediately above the cylindrical cone and having one end of the carbonated water passage open.
The cylindrical cone includes a decompression device including a decompression passage communicating between the carbonated water introduction space and the carbonated drinking water discharge port, and a narrow groove is provided in a wall surface of the decompression passage. Carbonated water dispensing valve. 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. A gap is provided as the decompression passage,
An inner cone claw portion projecting outward in the radial direction of the inner cone is provided on the outer circumferential surface of the inner cone, and an outer cone claw receiving portion that is recessed radially outward of the outer cone on the inner circumferential surface of the outer cone. The carbonated water dispensing valve according to claim 1, wherein the carbonated water dispensing valve is provided so that the inner cone claw portion is placed on the outer cone claw receiving portion.   The cylindrical cone is made of a continuous porous body having a large number of holes formed by sintering a powder material, and the holes of the continuous porous body constitute the decompression passage and the narrow groove of the decompression device. Item 5. The carbonated water dispensing valve according to Item 1 or 2.   An O-ring is provided on the outer peripheral surface of the cylindrical cone, and the assembling direction in the vertical direction of the cylindrical cone is arbitrarily changed by changing and adjusting the position of the O-ring provided on the outer peripheral surface. The carbonated water extraction valve according to claim 3, which can be used.   A carbonated water supply pipe for supplying carbonated water from a carbonator is branched into a plurality of branch pipes, and each of the carbonated water extraction valves according to any one of claims 1 to 4 is used. If the concentration of discharged carbonated water is varied by making the cylindrical cones different or removed, and a beverage stock solution supply pipe is connected to each carbonated water discharge valve, it is possible to dispense beverages with multiple carbonated water concentrations. A drinking water supply device.

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