JP3469024B2 - Carbonated water injection valve and drinking water supply device using this valve - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a post-mix valve for a drinking water supply device, that is, a carbonated water pouring valve, for pouring a mixture of carbonated water and a stock solution of beverage such as syrup and liquor.

[0002]

2. Description of the Related Art As a postmix valve for such a dispenser, as described in, for example, the specification and drawings of Japanese Utility Model Laid-Open No. 61-81070, the rotation of a valve lever is provided in a valve body. It is equipped with a supply valve for opening and closing the passage of carbonated water and a supply valve for opening and closing the passage of syrup.The nozzle provided at the lower end of the valve body has a supply valve for opening and closing the passage of carbonated water and a passage for syrup. A configuration is provided that includes a passage communicating with a supply valve that opens and closes, and a carbonated drinking water discharge port that mixes carbonated water and syrup and discharges the carbonated water, and discharges the carbonated water drink from the carbonated drinking water discharge port. It is common.

[0003]

However, when the carbonated water passes through the passage and mixes with the syrup, the carbonated water is discharged from the passage directly before the carbonated drinking water discharge port of the nozzle without passing through the pressure reducing mechanism. As it is mixed with syrup, the shaking caused by the pressure drop on the carbonated water is severe and the bond between the carbon dioxide and the water becomes loose, and a large amount of the carbon dioxide dissolved in the water is disturbed and escapes at a stretch. However, there is a drawback that the concentration of carbon dioxide gas is low, that is, the loss of carbon dioxide volume is large. By the way, generally, the amount of gas dissolved in a liquid is proportional to the pressure according to Henry's law, and the dissolved amount increases as the temperature decreases. Therefore, as a countermeasure to the above problem, the carbonated water is cooled before the carbonated water pouring valve as described in JP-B-51-105638, or as described in JP-B-47-1825. Many attempts have been made to improve the piping in the carbonated water supply device by increasing the pressure applied to the carbonator. However, when such a device for piping is used, there is a problem that the piping becomes complicated and the size of the device increases and the cost increases, and a drastic solution has not yet been found.

The present invention has been made by paying attention to the problems existing in such conventional techniques, and it is possible to increase the cost of the drinking water supply device without enlarging its outer shape. It is an object of the present invention to provide a carbonated water pouring valve in which the release of carbon dioxide gas in carbonated water during pouring is reduced.

[0005]

In order to achieve the above-mentioned object, according to the invention of claim 1, a carbonated water supply valve for opening and closing a carbonated water passage, and a beverage stock solution for opening and closing a beverage concentrate passage. A valve body having a valve, a valve lever 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, and the carbonated water and the beverage stock solution supplied from the carbonated water passage In a carbonated water pouring valve having a nozzle for mixing and pouring a beverage stock solution supplied from a passage at a carbonated drinking water outlet, the carbonated drinking water is provided immediately before the carbonated drinking water outlet in the carbonated water passage. A decompression device having a decompression passage having a passage cross-sectional area that widens as it approaches the discharge port is provided , and a mesh-shaped narrow groove is provided on the wall surface of the decompression passage .

According to the second aspect of the present invention, there is provided a valve body having a carbonated water supply valve for opening and closing the carbonated water passage, a beverage concentrate supply valve for opening and closing the beverage stock solution passage, and the carbonated water passage. A valve lever that opens and closes a supply valve that opens and closes and a supply valve that opens and closes a beverage stock solution, and carbonated water supplied from a carbonated water path and a beverage stock solution supplied from a beverage stock solution passage at a carbonated drinking water discharge port. In a carbonated water pouring valve having a nozzle for mixing and pouring out, a carbonated water introducing space is provided at an upper part in a cylindrical space portion whose axis is in a vertical direction immediately before a carbonated drinking water discharge port in a carbonated water passage. leaving inserting a cylindrical cone, a pressure reducing device the gap formed annular and a vacuum passage between an inner circumferential wall surface and the outer peripheral surface of the cylindrical cone of the cylindrical space provided, the outer peripheral surface of the cylindrical cone To the mesh
The thin groove is provided .

According to a third aspect of the present invention, the inner peripheral wall surface of the cylindrical space portion is a tapered surface that spreads downward.

According to a fourth aspect of the present invention, the upper end corner portion of the cylindrical cone is formed as an arc portion.

According to a fifth aspect of the present invention, the cylindrical cone is formed of a material having low heat conductivity.

According to a sixth aspect of the present invention, the cylindrical cone is made of a material having a low water absorption rate.

According to a seventh aspect of the present invention, a dish-shaped filter is covered on the upper end of the cylindrical cone.

According to an eighth aspect of the present invention, a straightening portion having a plurality of U-shaped grooves on the outer peripheral surface is provided in the lower portion of the cylindrical cone, and carbonated water from the annular gap is provided through the U-shaped grooves. Is configured to lead to the carbonated drinking water discharge port.

According to a ninth aspect of the present invention, the rectifying portion is provided separately from the cylindrical cone.

According to a tenth aspect of the present invention, the cylindrical cone is formed of a filter material.

In the invention according to claim 11 , the carbonated water supply pipe for supplying carbonated water from the carbonator is branched into a plurality of branch pipes, and the carbonated water discharge valve according to any one of claims 1 to 10 is branched for each. Different concentration of the carbonated water to be poured by changing or removing the cylindrical cones of these carbonated water discharge valves, and connecting the beverage stock solution supply pipe to each carbonated water discharge valve This is a beverage with a water concentration that can be poured out.

In the carbonated water pouring valve according to the first aspect, the carbonated water has a depressurizing passage having a gradually increasing cross-sectional area in the carbonated water passage immediately before the carbonated drinking water discharge port.
Both are gently decompressed by the decompression device with mesh-like narrow grooves on the wall surface of the decompression passage, so the fluctuations that loosen the connection between carbon dioxide gas and water in carbonated water are reduced, and the carbonated water is discharged from the carbonated water at the discharge port. The amount of carbon dioxide gas to escape, that is, the loss of carbon dioxide gas volume is reduced, and the concentration of the carbonated water that is poured out is increased.

In the carbonated water pouring valve according to the second aspect, the pressure reducing device provided in the carbonated water passage immediately before the carbonated drinking water discharge port is formed between the cylindrical cone and the cylindrical space portion. And the mesh formed on the outer peripheral surface of the cylindrical cone
Since the narrow groove is used, the carbonated water is decompressed in the passage having a sufficient length and cross-sectional area, and the sway that loosens the connection between the carbon dioxide gas and the water in the carbonated water is reduced, and the carbonated drinking water discharge port is reduced. The loss of carbon dioxide volume is reduced, and the concentration of carbonated water that is poured out is increased. Also, in the net-like fine grooves
Since the passage cross-sectional area required for the decompression passage is secured,
Between the outer peripheral surface of the cylindrical cone and the inner peripheral surface of the cylindrical space
The gap can be reduced to prevent displacement.

In the carbonated water dispensing valve according to any one of claims 2 to 10, the carbonated water dispensing valve is dispensed depending on whether the specifications of the cylindrical cone, for example, diameter, axial length, groove shape, material, etc. are changed or attached. You can change the concentration of carbonated water.

In the carbonated water pouring valve according to the third aspect, since the inner peripheral wall surface of the cylindrical space portion is a tapered surface that spreads downward, it is formed between the cylindrical cone and the cylindrical space portion. The gap provided is configured to gradually expand.
Therefore, since the decompression device provided in the carbonated water passage immediately before the carbonated drinking water discharge port has a sufficient length and cross-sectional area, the cross-sectional area is configured to gradually expand, The agitation that loosens the bond between carbon dioxide and water in carbonated water is further reduced, the loss of carbon dioxide volume at the carbonated drinking water outlet is further reduced, and the concentration of carbonated water that is poured out is even higher.

In the carbonated water pouring valve according to the fourth aspect, since the upper end corner portion of the cylindrical cone is an arc portion, the carbonated water flows from the carbonated water introduction space portion to the outer peripheral surface of the cylindrical cone and the cylindrical space. It smoothly flows into the gap with the inner peripheral surface, and there is less sway that loosens the connection between carbon dioxide gas and water in carbonated water.

In the carbonated water pouring valve according to the fifth aspect , since the cylindrical cone is made of a material having a low thermal conductivity, the carbonated water has a cylindrical shape even when the ambient air temperature is high in summer or the like. When flowing through the gap between the cone and the cylindrical space, the amount of heating from this cylindrical cone is reduced, and the loss of carbon dioxide gas volume is reduced.

In the carbonated water pouring valve according to the sixth aspect , since the material having low water absorbability is used for the cylindrical cone, when carbonated water flows through the gap between the cylindrical cone and the cylindrical space, The shaking received from the surface of the cylindrical cone is reduced and the loss of carbon dioxide volume is reduced.

In the carbonated water pouring valve according to the seventh aspect, since the upper end of the cylindrical cone is covered with the dish filter,
A peripheral edge bent side of the dish filter is interposed in the gap between the cylindrical cone and the cylindrical space portion, and the gap size between the cylindrical cone and the cylindrical space portion is made uniform, and
The carbonated water flowing from the carbonated water introducing space into the gap is gradually decompressed, and the concentration of the carbonated water poured out is stably reduced.

In the carbonated water pouring valve according to the eighth aspect, the U-shaped groove provided on the outer periphery of the flow regulating portion causes the carbonated water to flow along the wall surface surrounding the flow regulating portion. Therefore, the flow of the carbonated water from the gap formed between the outer peripheral surface of the cylindrical cone and the inner peripheral surface of the cylindrical space portion to the carbonated drinking water discharge port becomes smooth, and the shaking caused by the carbonated water is reduced. , The loss of carbon dioxide volume is reduced.

In the carbonated water pouring valve according to the ninth aspect , since the straightening section and the cylindrical cone are separate bodies, it is possible to change the specifications of the cylindrical cone while using the straightening section in common. it can.

In the carbonated water pouring valve according to the tenth aspect of the present invention, a large number of thin and long passages are formed through the entire cylindrical cone. Therefore, in this decompression device, the carbonated water is slowly and gently decompressed, the shaking added to the carbonated water is reduced, and the loss of the carbon dioxide gas volume is reduced.

In the drinking water supply device according to the eleventh aspect , carbonated water of the same concentration is supplied from the carbonated water supply pipe to the carbonated water pouring valve, but since the specifications of the cylindrical cone are different, each carbonated water pouring is performed. The concentration of carbonated water poured out from the outlet valve is different. Therefore, one drinking water supply device supplies drinking water having several carbonate concentrations.

[0028]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments in which the present invention is embodied in a carbonated water pouring valve of a drinking water supply apparatus will be described with reference to FIGS.
It will be described based on 19 . In the drawings, the same reference numerals indicate the same or corresponding parts. First, a first embodiment will be described with reference to FIGS. FIG. 1 is a front view of a carbonated water pouring valve, and a main portion of the present invention is partially shown in a sectional view. FIG. 2 is a side view of this carbonated water pouring valve, and, like FIG. 1, shows a main part of the present invention in a sectional view. In FIG. 1, reference numeral 1 denotes a valve main body, which has a passage 3 for carbonated water and a passage 4 for a stock solution of beverage such as syrup and liquor as in the conventional case. In addition, each passage 3,
Supply valve (not shown) for opening and closing these passages in the middle of 4
Is equipped with. These supply valves are configured to be opened by operating the valve lever 2, for example, by pushing a cup held in the hand to the right in FIG.

A cylindrical space portion 10 is formed at the left end in FIG. 2 of the valve body 1, and a straight tube-shaped beverage stock solution supply pipe 5 which is in communication with the supply valve hangs down in the center thereof. Further, the top surface of the cylindrical space portion 10 is an inclined surface whose left side in FIG.
A carbonated water passage is opened from the tangential direction at the uppermost portion of 0 (rightward in FIG. 1) to form a carbonated water introduction space 11. Since the carbonated water introducing space 11 is configured in this way, when the carbonated water is guided to the carbonated water introducing space 11, the carbonated water is supplied so as to draw a circle.

As shown in FIG. 3, the inner peripheral surface of the cylindrical space 10 is a tapered surface having an angle α with respect to the vertical line, and the gap 20 is widened downward.
Further, a cylindrical cone 14 as shown in FIGS. 4 to 6 is inserted in the cylindrical space portion 10. This cylindrical cone 14 has a hole 14a at the center for inserting the straight tube-shaped beverage concentrate supply pipe 5, and a lower portion thereof has a conical cavity portion 14b for receiving a raised portion of a disk-shaped straightening portion 15 described later.
Are formed. The upper end of the hole 14a is chamfered,
Further, a groove 14c for fitting an O-ring is formed in the middle. Further, the outer peripheral surface of the cylindrical cone 14 has a mesh-like fine shape.
A groove 14e is formed, and the upper end portion of the outer peripheral surface has an arc portion 1
4d. And the cylindrical cone 14
It is inserted into the inner peripheral surface of the cylindrical space portion 10 with the straight tube-shaped beverage concentrate supply pipe 5 as the axis, and the outer peripheral surface of the cylindrical cone 13 and the inner wall surface of the cylindrical space portion 10 A gap 20 is formed between them, and this gap 20 is configured as a pressure reducing device that constitutes a part of the passage of the carbonated water. 1 and 2, reference numeral 18 denotes an O-ring, which is configured so that carbonated water does not leak from the central portion of the cylindrical cone 10.

In the lower part of the cylindrical cone 13, the center part of the upper and lower sides is raised in a hyperbola and is raised, and a substantially disc-shaped straightening part 1 having a hole through which the straight tube-shaped beverage stock solution supply pipe 5 is inserted.
5 are provided. The diameter of the straightening portion 15 is substantially equal to the inner diameter of the cylindrical space portion 10, and a plurality of U-shaped grooves 16 are formed on the outer periphery thereof as shown in FIGS. 7 and 8. Also,
On the lower surface of the rectifying portion 15, linear protrusions 17 are provided radially from the outer peripheral edge toward the central raised portion as shown in FIG.

The outer peripheral wall of the portion forming the cylindrical space portion 10 is formed in a cylindrical shape protruding from the valve body 1, and is formed as a mouthpiece portion 7 for engaging the nozzle 22. The nozzle 22 has a substantially cylindrical appearance, and a fitting hole 23 that fits into the mouthpiece 7 is formed in an upper portion inside the nozzle 22, and a curved step portion 24 is formed in a lower portion of the fitting hole 23. A carbonated drinking water outlet 25 is formed therethrough.

To assemble the respective components constructed as described above, first, the cylindrical cone 14 is inserted into the cylindrical space 10, and then the disc-shaped rectifying portion 15 is inserted into the beverage stock solution supply pipe 5, and then, By fitting and fixing the fitting hole 23 of the nozzle 22 to the mouthpiece portion 7 of the valve body 1, the disc-shaped straightening portion 15 is supported on the curved step portion 24 of the nozzle 22, and the cylindrical cone 14 Are supported on the rectifying portion 15 and fixed in the cylindrical space portion 10. Further, with this configuration, the carbonated water introducing space portion 11 and the gap 20 are connected to each other by forming a smooth passage by the arc portion 14d. Further, a carbonated water passage along the fitting hole 23 is formed between the U-shaped groove 16 formed on the outer peripheral surface of the disk-shaped straightening portion 15 and the inner peripheral surface of the fitting hole 23 of the nozzle 22. It The linear protrusion 1 is provided between the lower surface of the disc-shaped straightening portion 15 and the curved step portion 24 of the nozzle 22.
Since a curved gap is formed by 7, the U-shaped groove 16 and the carbonated drinking water outlet 25 are connected to each other by forming a smooth passage.

In the first embodiment constructed as described above, the valve lever 2 is pushed to open the supply valve for opening and closing the carbonated water passage 3 and the beverage concentrate passage 4 in the valve body 1. Then, since the carbonated water passage 3 opens tangentially to the carbonated water introduction hollow portion 11, the carbonated water is gently introduced while drawing a circle in the carbonated water introduction hollow portion 11. Therefore, when the carbonated water is introduced, the shaking that disturbs the connection between the carbon dioxide gas and the water in the carbonated water is suppressed. The carbonated water introduced into the carbonated water introducing cavity 11 is introduced into the gap 20 through the arc portion 14d formed at the upper end of the outer peripheral surface of the cylindrical cone 14, so that the carbonated water is introduced into the gap 20. In the portion, shaking that disturbs the connection between carbon dioxide gas and water in carbonated water is suppressed.

The mesh of the gap 20 and the cylindrical cone 14
In the decompression device including the narrow grooves 14e , the gap 20 is formed annularly and the narrow grooves 14e are formed.
Because it is a large pressure reduction passage formed in long and area, moreover, the passage is a more larger structure toward the downstream. Therefore, carbonated water in the decompressor is
The flow velocity is slow, and further, it is further decelerated as it goes downstream, and it flows down over a long period of time, so that it is slowly and gently depressurized and discharged to the disc-shaped rectifying unit 15. Therefore, the fluctuation of the carbonated water in the decompression device is small, 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 by the U-shaped groove 16 of the disc-shaped straightening section 15 and gently flows down to the carbonated drinking water discharge port along the peripheral wall of the fitting hole 23 of the nozzle 22. Therefore, the fluctuation given to the carbonated water flowing down from the pressure reducing device to the carbonated drinking water discharge port 25 is suppressed, and the disorder of the connection between the carbon dioxide gas and the water in the carbonated water is reduced. In addition, the lower surface of the rectifying portion has a linear protrusion 1.
7 forms a gap as a flow path with the upper surface of the stepped portion 24 in the nozzle 22, and the upper surface of the stepped portion is an arc surface, so that the pressure reducing device discharges the carbonated drinking water. The flow to the outlet 25 is performed more smoothly, the fluctuation given to the carbonated water flowing down from the pressure reducing device to the carbonated drinking water discharge outlet 25 is further suppressed, and the disorder of the connection between carbon dioxide gas and water in the carbonated water is suppressed. It is further reduced.

As described above, the carbonated water is decompressed from the carbonated water side supply valve of the valve body 1 and supplied to the carbonated drinking water discharge port. On the other hand, from the supply valve 4 on the beverage concentrate side of the valve body 1, the beverage concentrate is supplied to the carbonated drinking water discharge port 25 via the beverage concentrate supply pipe 5. Then, the decompressed carbonated water and the beverage stock solution are mixed here, and the carbonated drinking water having a high concentration is discharged from the carbonated drinking water discharge port 25.

The outer peripheral surface of the cylindrical cone 14 has a mesh shape.
Since the narrow groove 14e is provided , the cylindrical cone 14
Even if the dimensional difference between the outer peripheral diameter of the cylinder and the inner peripheral diameter of the cylindrical space portion 10 is made smaller, the cross-sectional area required for the pressure reducing passage can be secured by the narrow groove 14e. Therefore, the cylindrical cone 14 can be inserted into the cylindrical space portion 10 more properly, and the passage cross-sectional area in the gap 20 can be made stable. As a result, carbonated water having a stable concentration can be obtained. The shape, size, and number of the fine grooves 14e can be appropriately designed depending on the required concentration of carbonated water.

9 to 11 show a second embodiment, which is a cylindrical cone 1 as compared with the first embodiment.
The fourth upper, hole 3 in the center, which is illustrated in FIGS. 10 and 11
1a is covered with a dish filter. With this configuration, the size of the gap is made uniform by interposing the bent side 31b of the filter 31 between the outer peripheral surface of the cylindrical cone 14 and the inner peripheral surface of the cylindrical space portion 10. is there. As a result, carbonated water having a stable concentration can be obtained.

FIG. 12 shows a structure in which the cylindrical cone 14 and the filter 31 are removed in the first and second embodiments. With this construction, carbonated water of weak concentration can be obtained as in the conventional case. You can Further, in the first embodiment, the cylindrical cone 14 may be made of a filter material. According to this structure, even if the gap 20 between the cylindrical cone 14 and the cylindrical space portion 10 is reduced, a decompression passage having a long and wide cross-sectional area is formed.
A gentle depressurization can be stably obtained.

FIGS. 13 to 17 show the third embodiment.
The difference from the first embodiment is that the cylindrical cone and the disc-shaped rectifying unit are integrally formed. That is, as shown in the figure, the cylindrical cone 44 has a substantially cylindrical cylindrical cone portion 44A whose upper portion corresponds to the cylindrical cone 14.
The lower portion is a rectifying portion 44B corresponding to the disc-shaped rectifying portion 15, and these are integrally formed.
The cylindrical cone portion 44A has a substantially cylindrical shape, and has a central axis portion provided with a hole 44a through which the undiluted beverage supply pipe 5 is inserted, the upper end thereof is chamfered, and an O-ring fitting groove is provided in the middle portion. 44c is provided. The upper end of the outer peripheral surface of the cylindrical cone portion 44A is formed as an arc portion 44d. On the other hand, the rectifying section 44B includes the cylindrical cone section 4
4A, which is a portion having a diameter larger than that of the outer periphery and having a small height, and the outer peripheral surface has a U shape similar to that of the disk-shaped rectifying portion 15 described above.
A V-shaped groove 16 is provided. Further, the lower surface of the rectifying portion 44B has a central portion that is raised in a hyperbolic shape, similar to the disc-shaped rectifying portion 15, and linear projections 17 are radially provided from the outer periphery toward the raised portion. In addition, in the central axis part,
A hole 44b, which is continuous with the hole 44a and has a smaller diameter than the hole 44a, is provided for inserting the beverage stock solution supply pipe 5. Therefore, when mass-producing the same specifications, especially when the cylindrical cone 44 is integrally molded with resin,
As a result of the integration, a low cost product can be obtained.

FIG. 18 is a carbonated water dispensing valve according to the fourth embodiment, the Compared with the third embodiment as a cylindrical dish-shaped filter 31 the upper part of the aforementioned cone 44 It is different in that it is covered. The point that the dish-shaped filter 31 is covered on the upper portion of the cylindrical cone 44 is the same as in the third embodiment, and the outer peripheral surface of the cylindrical cone 44 and the inner peripheral surface of the cylindrical space portion 10 are formed. Gap 20
By interposing the bent side 31b of the filter 31 in the above, the dimension of the gap 20 is made uniform over the entire circumference. As a result, carbonated water having a stable concentration can be obtained.

If the cylindrical cones 14 and 44 of the first and third embodiments are made of a material having a low water absorption property, for example, a resin, carbonated water having a high carbon dioxide concentration can be stably obtained. . That is, in the carbonated water pouring valve, the carbonated water passes through the gap 20 between the cylindrical cones 14 and 44 as the pressure reducing device and the cylindrical space portion 10.
When the water absorbency of Nos. 4 and 44 is high, the water in the carbonated water is replaced with the air in the cylindrical cones 14 and 44 having high water absorbency and is absorbed in the cylindrical cones, so that the carbonated water is shaken. This may result in not being able to obtain a stable concentration of carbonated water, but this is alleviated when using cylindrical cones 14, 44 of low water absorption material.

Further, if the material of the cylindrical cones 14 and 44 of the first and third embodiments is one having a low thermal conductivity, for example, a resin, carbonated water having a higher carbon dioxide gas concentration can be obtained. That is, when the carbonated water passes through the gap 20 between the cylindrical cones 14 and 44 as the pressure reducing device and the cylindrical space portion 10, the carbonated water pouring valve described above,
Heat exchange with 44. Therefore, when the temperature around the drinking water supply device is high, such as in summer, the temperature of the cylindrical cones 14 and 44 may rise before the carbonated water is poured out. When water is poured out, the carbonated water is heated by the cylindrical cones 14 and 44, the bond between the carbon dioxide gas and water is weakened, and the water is poured out, whereby the carbon dioxide concentration is weakened. However, when the cylindrical cones 14 and 44 having low thermal conductivity are used, the heating amount in this portion is reduced and the decrease in carbon dioxide concentration is reduced.

In the carbonated water dispensing valves according to the first to fourth embodiments described above, the concentration of the carbonated water dispensed decreases when the cylindrical cones 14 and 44 are not attached. Therefore, it can be used as a carbonated water pouring valve that obtains carbonated water of two kinds of concentrations, respectively depending on whether the cylindrical cone is attached or not attached. Further, the specifications of the cylindrical cones 14 and 44, for example, the axial length and diameter of the cylindrical cones 14 and 44, the radii of the circular arc portions 14d and 44d at the upper end of the outer peripheral surface, the shapes of the thin grooves 14e and 44e, the number, and the filter 31. Since carbonated water having different concentrations can be obtained by appropriately changing the presence or absence of the above or the specification thereof, the specification can be used as a carbonated water pouring valve for carbonated water of various concentrations.

FIG. 19 is a piping system diagram of the drinking water supply apparatus according to the fifth embodiment, in which the carbonated water pouring valve according to the first to fourth embodiments is constructed in the above manner. Two types are prepared, one for strong-concentration carbonated water and one for weak-concentration carbonated water, and by using this carbonated water pouring valve, drinking water having two types of carbon dioxide gas concentrations can be supplied. Figure
In FIG. 19 , 51 is a tap of tap water, 52 is a water supply pump, 53 is an opening / closing valve, 54 is a check valve, and 55 is a carbonator, and the carbonator 55 has pressurized water from the water supply pump 52 and a carbon dioxide gas cylinder 56. Carbon dioxide gas having a predetermined pressure is introduced to generate carbonated water having a predetermined concentration. 57 is a cooling tank having a cooling pipe 57a, 58 is a carbonated water supply pipe,
58a and 58b are branch pipes of the carbonated water supply pipe 58, 60,
61 is a flow control valve of carbonated water, 62 and 63 are beverage stock solution supply pipes, 64 is a carbonated water pouring valve for strong concentration, and 65 is a carbonated water pouring valve for weak concentration, which is generated by the carbonator 55. The water is cooled in the cooling tank 57, the flow rate is controlled by the flow rate control valves 60 and 61, and the carbonated water of a predetermined flow rate is supplied to the carbonated water pouring valves 64 and 65. Further, the carbonated water extraction valves 64 and 65 are supplied with a beverage concentrate such as syrup or liquor having a predetermined pressure via the beverage concentrate supply pipe supplies 62 and 63. In the carbonated water pouring valves 64 and 65, the carbonated water that is adjusted to a predetermined concentration and supplied is decompressed, the volume loss of carbon dioxide gas is adjusted, and mixed with the beverage stock solution,
Carbonated drinking water outlet 25 of carbonated water pouring valve 64 for strong concentration
From the above, and weak carbonated water is supplied from the carbonated drinking water discharge port 25 of the carbonated water discharge valve 65 for weak concentration.

As described above, in the present embodiment, the carbonated water supply pipe 58 is provided with the branch pipes 58a and 58b, and the carbonated water discharge valve connected to the tip of the branch pipes 58a and 58b is set for the strong and weak concentrations, so that the carbonated water supply pipe 58 can be easily adjusted. It is possible to obtain carbonated drinking water having two kinds of carbon dioxide concentration. In the present embodiment, the carbonated water pouring valves 64 and 65 for the two types of carbon dioxide concentration are connected, but if the number is further increased, drinking water having various types of carbon dioxide concentration can be obtained. be able to.

[0047]

Since the present invention is constructed as described above, it has the following effects. The invention according to claim 1 is
The carbonated water has a pressure reducing passage whose cross-sectional area gradually widens in the passage just before the carbonated drinking water discharge port , and
Since the pressure is gradually reduced by the decompression device with the net-like fine grooves on the wall surface, the fluctuation of the carbonated water that loosens the connection between carbon dioxide and water is reduced, and the amount of carbon dioxide that escapes from the carbonated water at the carbonated drinking water discharge port is reduced. That is, the loss of carbon dioxide volume is reduced, and strong carbonated water of high concentration is obtained.

According to a second aspect of the present invention, the decompression device provided in the carbonated water passage immediately before the carbonated drinking water discharge port has a gap formed between the cylindrical cone and the cylindrical space and a cylindrical hollow.
Since the mesh-shaped narrow grooves formed on the outer peripheral surface of the cone are used, the carbonated water is decompressed in the passage having a sufficient length and cross-sectional area, and the shaking that loosens the bond between the carbon dioxide gas and the water in the carbonated water is generated. As a result, the loss of the carbon dioxide gas volume at the carbonated drinking water discharge port is reduced, and a strong concentration of carbonated water is obtained.

The invention according to claims 2 to 10 is dispensed by changing the specifications of the cylindrical cone, for example, the diameter, the axial length, the groove shape, the material, or the like, or whether or not the cylindrical cone is attached. The concentration of carbonated water can be easily changed.

According to the third aspect of the present invention, since the inner peripheral wall surface of the cylindrical space portion is formed into a tapered surface that spreads downward, the decompression passage formed between the cylindrical cone and the cylindrical space portion is It has a sufficient length and cross-sectional area. Moreover, since the passage is gradually expanded, the carbonated water is slowly depressurized. For this reason, the shaking that loosens the connection between carbon dioxide gas and water in carbonated water is reduced, the loss of carbon dioxide volume at the carbonated drinking water discharge port is reduced, and strong concentration carbonated water is obtained.

According to the fourth aspect of the present invention, since the upper end corner portion of the cylindrical cone is an arc portion, the carbonated water flows from the carbonated water introduction space portion to the outer peripheral surface of the cylindrical cone and the inner peripheral surface of the cylindrical space. It smoothly flows into the gap, and it is possible to reduce the shaking that loosens the connection between the carbon dioxide gas and the water in the carbonated water.

According to the fifth aspect of the present invention, since the cylindrical cone is made of a material having a low thermal conductivity, the carbonated water contains the cylindrical cone and the cylindrical space even when the ambient air temperature is high such as in summer. When flowing through the gap with the section, the amount of heating from the outer peripheral surface of the cylindrical cone is reduced, and the loss of carbon dioxide gas volume can be reduced.

According to the sixth aspect of the present invention, since a material having low water absorption is used for the cylindrical cone, when carbonated water flows through the gap between the cylindrical cone and the cylindrical space, the surface of the cylindrical cone There is less upset from, and the loss of carbon dioxide volume can be reduced.

According to the seventh aspect of the invention, since the upper end of the cylindrical cone is covered with the dish-shaped filter, the gap size between the cylindrical cone and the cylindrical space is made uniform, and the loss of the carbon dioxide gas volume is stabilized. Can be reduced.

According to the eighth aspect of the present invention, the carbonated water is flown along the wall surface surrounding the rectifying portion by the U-shaped groove provided on the outer periphery of the rectifying portion. Therefore, the flow of the carbonated water from the gap between the cylindrical cone and the cylindrical space portion to the carbonated drinking water discharge port becomes smooth, the fluctuation of the carbonated water received is reduced, and the loss of the carbon dioxide gas volume is prevented.

According to the ninth aspect of the present invention, since the rectifying section and the cylindrical cone are separate bodies, the specifications of the cylindrical cone are changed while the rectifying section is shared, and the rectifying section is supplied from the drinking water pouring valve. It is possible to easily change the concentration of the carbonated water.

According to the tenth aspect of the present invention, since many thin and long passages are formed through the entire cylindrical cone, the carbonated water is slowly depressurized in the cylindrical cone as the depressurizing device. Therefore, the fluctuation given to the carbonated water is reduced, and the loss of the carbon dioxide gas volume is further reduced.

In the drinking water supply device according to the eleventh aspect of the present invention, the carbonated water of a constant concentration is supplied from the carbonated water supply pipe, but by a simple means of changing the cylindrical cone of the carbonated water pouring valve. It is possible to easily supply carbonated drinking water of several kinds of concentrations.

[Brief description of drawings]

FIG. 1 is a front view of a carbonated water pouring valve according to a first embodiment, showing a main part in a cross section.

FIG. 2 is a side view of the carbonated water pouring valve shown in FIG. 1, showing a main part in section.

FIG. 3 is a front view of a valve body of the carbonated water pouring valve shown in FIG. 1, showing a main part in a cross section.

FIG. 4 is a front view of a cylindrical cone of the carbonated water pouring valve shown in FIG. 1.

FIG. 5 is a plan view of the cylindrical cone shown in FIG.

6 is a side sectional view of the cylindrical cone shown in FIG.

7 is a front view of a disc-shaped rectifying portion of the carbonated water pouring valve shown in FIG. 1. FIG.

FIG. 8 is a bottom view of the disc-shaped rectifying unit shown in FIG. 7.

FIG. 9 is a front view of the carbonated water pouring valve according to the second embodiment, showing a main part in a cross section.

10 is a front view of a dish-type filter used in carbonated water dispensing valve of Figure 9 described.

11 is a plan view of the dish filter shown in FIG. 10. FIG.

FIG. 12 is a front view of the carbonated water pouring valve according to the first and second embodiments when a cylindrical cone is removed.

FIG. 13 is a front view of a carbonated water pouring valve according to a third embodiment, showing a main part in a cross section.

FIG. 14 is a side view of the carbonated water pouring valve shown in FIG. 13 , showing a main part in section.

FIG. 15 is a front view of a cylindrical cone of the carbonated water pouring valve shown in FIG. 13 .

16 is a bottom view of a cylindrical cone of Figure 15 described.

FIG. 17 is a side sectional view of the cylindrical cone shown in FIG. 15 .

FIG. 18 is a front view of the carbonated water pouring valve according to the fourth embodiment, showing a main part in a cross section.

FIG. 19 is a piping system diagram of a carbonated drinking water device according to a fifth embodiment.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Valve main body, 2 ... Valve lever, 3 ... Carbonated water passage, 4 ... Beverage concentrate passage, 10 ... Cylindrical space part, 11 ...
Carbonated water introduction space part, 14, 44 ... Cylindrical cone, 14
d, 44d ... circular arc portion, 14e ... mesh groove as fine groove,
15, 44B ... Rectifying part, 44A ... Cylindrical cone part, 44
e ... fine groove, 16 ... U-shaped groove of rectifying section, 20 ... Gap formed between cylindrical cone and cylindrical space section, 22 ... Nozzle, 25 ... Carbonated drinking water discharge port, 31 ... Filter, 55 ...
Carbonator, 58 ... Carbonated water supply piping, 58a, 58b
... Branch pipes of carbonated water supply pipes, 62, 63 ... Beverage concentrate supply pipes, 64 ... Carbonated water pouring valve for strong concentration, 65 ... Carbonated water pouring valve for weak concentration, α ... Angle of tapered surface.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Saki Takeuchi 16-3 Hoshizaki Electric Co., Ltd., South Building, Sakaemachi, Toyoake City, Aichi Prefecture (56) References JP-A-4-189796 (JP, A) Sakukai Sho 63 -154499 (JP, U) Japanese Patent Publication Sho 31-6933 (JP, B1) (58) Fields investigated (Int.Cl. ⁷ , DB name) B67D 1/14

Claims (11)

(57) [Claims] 1. A valve body having a carbonated water supply valve for opening and closing a carbonated water passage, a beverage concentrate supply valve for opening and closing a beverage stock solution passage, and a supply valve and a beverage for opening and closing the carbonated water passage. The valve lever that opens and closes the supply valve that opens and closes the undiluted solution passage, and the carbonated water that is supplied from the carbonated water passage and the beverage undiluted solution that is supplied from the beverage undiluted solution passage are mixed and poured out at the carbonated drinking water discharge port. In a carbonated water pouring valve having a nozzle, immediately before the carbonated drinking water discharge port in the carbonated water passage, decompression where the cross-sectional area becomes wider as it approaches the carbonated drinking water discharge port.
A decompression device with a passage is installed , and the wall surface of the decompression passage has a mesh shape.
A carbonated water pouring valve characterized by having a narrow groove . 2. A valve main body comprising a carbonated water supply valve for opening and closing a carbonated water passage, a beverage concentrate supply valve for opening and closing a beverage stock solution passage, and a supply valve and a beverage for opening and closing the carbonated water passage. The valve lever that opens and closes the supply valve that opens and closes the undiluted solution passage, and the carbonated water that is supplied from the carbonated water passage and the beverage undiluted solution that is supplied from the beverage undiluted solution passage are mixed and poured out at the carbonated drinking water discharge port. In a carbonated water pouring valve having a nozzle, immediately before the carbonated drinking water discharge port in the carbonated water passage, a cylindrical cone is formed by leaving the carbonated water introduction space at the top in the cylindrical space where the axis is in the vertical direction. A pressure reducing device that is inserted and uses an annular gap formed between the inner peripheral wall surface of the cylindrical space portion and the outer peripheral surface of the cylindrical cone as a pressure reducing passage is provided .
A carbonated water pouring valve characterized by having a mesh-shaped groove on the outer peripheral surface . 3. The carbonated water pouring valve according to claim 2, wherein the inner peripheral wall surface of the cylindrical space portion is formed as a tapered surface that spreads downward. 4. A carbonated water dispensing valve according to any one of claims 2-3, characterized in that the formation of the upper corner portion of the cylindrical cone as an arc portion. 5. A carbonated water dispensing valve according to any one of claims 2-4, characterized in that the cylindrical cone formed from a material having a low thermal conductivity. 6. carbonated water dispensing valve according to any one of claims 2-5, characterized in that the cylindrical cone formed from a material having a low absorptivity of water. 7. The dish-shaped filter is covered on the upper end of the cylindrical cone, as claimed in any one of claims 2 to 6.
The carbonated water pouring valve according to the item. 8. A rectifying portion having a plurality of U-shaped grooves on an outer peripheral surface is provided at a lower portion of the cylindrical cone, and carbonated water from the annular gap is discharged through the U-shaped grooves into a carbonated drinking water discharge port. The carbonated water pouring valve according to any one of claims 2 to 8 , which is configured to lead to. 9. The carbonated water pouring valve according to claim 8, wherein the rectifying portion is provided separately from the cylindrical cone. 10. The cylindrical cone is formed of a filter material, as claimed in any one of claims 2 to 9.
Carbonated water dispensing valve according to. 11. A carbonated water supply pipe for supplying carbonated water from a carbonator is branched into a plurality of branch pipes, and the carbonated water discharge valve according to any one of claims 1 to 10 is used for each of these carbonated water. The concentration of the poured carbonated water is made different by changing or removing the cylindrical cone of the pouring valve, and the beverage stock solution supply pipe is connected to each carbonated water pouring valve to pour beverages with multiple carbonated water concentrations. Drinking water supply device characterized by being able to get out.