JP6684256B2 - Beer pouring cock - Google Patents

Description

  The present invention relates to an improvement of a beer pouring cock that can separately pour beer and foam.

  Among beer pouring cocks attached to a beer server, beer pouring cocks capable of separately pouring beer and foam are known, as disclosed in Patent Documents 1 to 5. In both cooks, beer is poured out when the lever is tilted from the upright position to the front, and foam is poured when the lever is tilted in the back.

  The valve mechanism that enables such pouring is commonly equipped with a conical valve element on the primary side (upstream side) of the valve rod, and this is used as a beer pouring valve, while foam pouring is performed. For use, an internal flow path for introducing beer from the top of the conical valve body to the inside of the valve rod is provided, and a secondary opening (downstream side) of the valve rod is provided with a separate end opening of the internal flow channel that can be opened and closed. The valve is provided, and these two valves are coaxially integrated.

  The bubble pouring valve is always urged in a direction (primary side) that closes the end opening of the internal flow path, and by tilting the lever inward, the bubble pouring valve independently moves in the opposite direction (secondary side). Slide to open the end opening of the internal flow path. By the opening, the beer introduced into the internal flow path of the valve rod is sprayed from the end opening and is foamed and poured out.

  In addition, beer is poured out with the outside of the conical valve body and the valve rod as a flow path, and the conical valve body is opened by tilting the lever toward you and sliding the entire valve mechanism to the primary side. It moves to the position, passes through the outside of the conical valve body, flows into the outer space of the valve rod, and is poured out in a liquid state from the nozzle under the space.

JP, 2001-192098, A JP, 2002-2886, A JP 2006-206157 A JP, 2013-199284, A JP, 2014-91551, A

  When beer and foam are separately poured into a container, it is ideal that the beer is poured so as not to foam as much as possible, and the foam is poured so as not to break the texture. In other words, at the final stage of pouring beer and foam into a container, beer is foamed more than necessary, so it becomes dull, and the texture of the foam becomes rough, and the taste and appearance are impaired. is there.

  However, any of the beer pouring cocks in the above-mentioned prior art documents does not have any particular configuration or processing applied to the beer flow path and the foam flow path in the cock body, and the above-mentioned final stage pouring is taken into consideration. Was not.

  The present invention has been made in view of the above-mentioned problems, and the object thereof is a beer pouring cock that can be poured in almost the same state without impairing the carbonation and fineness of beer or foam. Is to provide.

  In order to achieve the above-mentioned object, in the present invention, in a beer pouring cock having a valve mechanism capable of separately pouring beer and foam into the cock body, a flow path of beer or / and foam in the cock body, It has a mirror-finished inner wall surface.

  Here, the "beer or / and foam channel" is synonymous with "at least one of the beer channel and the foam channel", and only the beer channel and the foam channel only. There are three modes of both, but which mode is adopted is selected according to the priority of beer, foam and both. Of course, it is preferable to form both the beer and foam channels on a mirror surface. Further, for the mirror-finishing, a conventional technique such as an etching method can be adopted, but NC lathe processing is preferable. This is because the mirror finishing can be performed in an extremely short time even by the etching method, which is suitable for mass production.

  According to the above means, since the inner wall surface of the flow path for beer or foam in the cock body is formed as a mirror surface, the beer or foam flows in a laminar flow state without turbulent flow in the flow path. Therefore, the beer can be discharged in almost the same state without being foamed carelessly in these flow paths or the bubbles generated by the valve mechanism being disturbed.

  In addition, the bubble passage of the valve mechanism that communicates with the foam passage of the cock body also has a mirror-finished inner wall surface, so that the foam passage of the cock body is almost as it is just after generation. Can be supplied to.

  According to the present invention, since the flow path for beer or foam in the cook body is formed on the mirror surface, beer maintains the carbonic acid concentration when introduced into the cook body from a beer source such as a beer barrel, and the foam is It can be poured while maintaining the fineness when it is generated inside the cock body.

  Further, in the valve mechanism as well, since the flow passage inner surface communicating with the foam passage of the cock body is formed into a mirror surface, the fineness immediately after the generation is maintained and the foam is supplied to the foam passage of the cock body. be able to.

Overall sectional view of beer pouring cock according to an embodiment of the present invention (completely stopped state) Same as above, sectional view of the cock body alone The same, the exploded plan view of the valve mechanism Same as above, side view exploded sectional view of the valve mechanism Same as above, side view assembly sectional view of the valve mechanism The AA line end view of FIG. Similarly, an enlarged cross-sectional view of the main part of the foam pouring state

  Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is an overall cross-sectional view of a beer pouring cock according to an embodiment of the present invention, in which a cock body H is equipped with a valve mechanism having a structure to be described later in detail and a cock lever L is attached. Is shown. The cock body H has a connection port J to the beer server, a housing portion S for housing a valve mechanism is horizontally provided therein, and a beer pouring nozzle N1 and a foam pouring nozzle are provided downward from the housing portion S. N2 is provided. The bubble pouring nozzle N2 is located on the front side when the left side of the paper surface is the front and the right side of the paper surface is the back in the drawing.

  The cock lever L is attached to the cock body H almost directly above the bubble pouring nozzle N2 so as to be tiltable (swingable) back and forth about the ball joint B as a fulcrum, and the cock lever L is tilted to the front. Then, the beer is introduced from the connection port J and is poured out from the beer pouring nozzle N1 via the housing portion S of the valve mechanism. That is, in this embodiment, the container S and the beer pouring nozzle N1 function as a beer flow path in the cock body H. On the other hand, when the cock lever L is tilted inward, bubbles are generated in the valve mechanism, and the bubbles are discharged from the bubble discharging nozzle N2. That is, in this embodiment, the foam pouring nozzle N2 functions as a foam channel in the cock body H.

  In such a beer pouring cock, the feature of the present invention is that, as shown in FIG. 2, in the cock body H, the accommodation portion S functioning as a beer flow path and the inner surface of the beer pouring nozzle N1 (in the drawing, one point). This is at the point where the mesh part by the chain line) and / or the inner surface (the mesh part by the two-dot chain line in the drawing) of the foam pouring nozzle N2 functioning as a foam flow path is formed as a mirror surface.

  According to the beer pouring cock, the beer introduced into the cock main body H flows in a laminar state in the accommodation section S and the beer pouring nozzle N1. For this reason, beer with almost the same carbonic acid concentration as when introduced can be discharged without inadvertently foaming in this process. In addition, since bubbles similarly flow in a laminar flow state, it is possible to discharge bubbles having the same texture as that generated by the valve mechanism.

  It should be noted that which of the beer flow path and the foam flow path is free to be mirror-finished, but by mirror-finishing both the flow paths, beer with high carbonic acid and fine bubbles are sharper and of higher quality. Beer can be served.

  Further, although mirror finishing can be realized by NC lathe processing, other known methods can be adopted as long as the method can eliminate the surface roughness of the flow path.

  Next, the valve mechanism will be described in detail with reference to FIGS.

  FIG. 3 is an exploded plan view of the valve mechanism according to the present embodiment. In FIG. 3, 1 is a valve body for beer pouring (hereinafter referred to as a first valve body), 2 is a valve rod, and 3 is a socket. Reference numeral 4 denotes a valve body for foam pouring (hereinafter referred to as a second valve body) which is slidably accommodated in the socket 3 and 5 an urging spring for urging the second valve body 4 toward the valve rod 2 side. , 6 are caps as spring supports for the biasing springs 5. This valve mechanism is arranged in the order described above as a member that positions the first valve body 1 on the most upstream side (primary side) of the beer pouring cock.

  The detailed configuration and assembling method of each member will be described with reference to FIG. 4 which is an exploded sectional view and FIG. 5 which is an assembled sectional view. Note that the screwing (screw) portion does not have a function as a flow path for beer or foam, etc., other than the function of connecting members to each other. First, the first valve body 1 that controls the pouring of beer is composed of a conical body 11 and a packing 12. The conical body 11 has a streamlined shape that bulges outward from the top to the bottom, and a concave groove 11a for applying a tool (minus driver) is provided at the top, and a convex portion 11b to be inserted into the packing 12 is provided at the bottom. It projects in the axial direction.

  As shown in FIG. 4, the internal structure has an introduction hole 11c extending from the concave groove 11a to the convex portion 11b in the central axis of the conical body 11 for introducing beer from a beer server when foam is generated. . In this embodiment, the introduction hole 11c includes a small-diameter passage 11d on the concave groove 11a side and a large-diameter passage 11e on the convex portion 11b side having a larger diameter. Reference numeral 11f is a female screw hole provided in the middle of the large-diameter flow passage 11e, into which one end of the valve rod 2 is screwed.

  On the other hand, the packing 12 has a donut shape in which the insertion hole 12a of the convex portion 11b is provided at the center, and has a thickness matching the height of the convex portion 11b.

  The valve rod 2 integrally mounts the first valve body 1 on the primary side and the socket 3 on the secondary side, and has respective mounting shafts 21 and 22 at both ends. The mounting shaft 21 on the primary side (the right side in the drawing) is provided with a male screw 21a that is screwed into the female screw hole 11f of the conical body 11, and by this screwing, the large-diameter passage 11e of the conical body 11 is completely inserted. Has a length to be inserted into. A flange 21b is provided at the base (base portion) of the mounting shaft 21, and when the mounting shaft 21 is screwed into the conical body 11, the packing 12 is sandwiched between the bottom of the conical body 11 as shown in FIG. I have to. Further, a male screw 22a is also provided on a part of the outer circumference of the mounting shaft 22 on the secondary side (left side in the drawing), and an O-ring 22b is attached to the base of the male screw 22a.

  The internal structure of the valve rod 2 is, as shown in FIG. 4, provided with an internal flow passage 23 on the central axis from the mounting shaft 21 on the primary side to a position beyond the male screw 22a of the mounting shaft 22 on the secondary side. The starting end of the internal flow passage 23 opens at the end face of the mounting shaft 21 on the primary side and communicates with the small-diameter flow passage 11d of the first valve body 1 as shown in FIG. The end of the internal flow path 23 is closed in the middle of the mounting shaft 22 on the secondary side.

  Regarding the end portion, in the above three prior art documents, small holes for bubble generation were formed in line with the internal flow path, but in this embodiment, the internal flow path 23 is formed radially inward from the end portion of the internal flow path 23. An orifice-shaped injection hole 24 having a diameter sufficiently smaller than that of the flow path 23 is provided. That is, the present invention is characterized in that the injection hole 24 is provided from the internal flow path 23 to the side. In the case of this embodiment, as shown in FIG. 6, three injection holes 24 are radially provided on the same surface of the mounting shaft portion 22 at intervals of 120 degrees, but the number is not limited to this. Not done. However, if the number of the injection holes 24 is small, the amount of bubbles generated will be small, and it will take time to pour out an appropriate amount of bubbles. On the contrary, if the number of the injection holes 24 is too large, the injection pressure is dispersed and the bubbles are insufficient. Therefore, it is appropriate that the number of the injection holes 24 is 2 to 4.

  Next, the socket 3 is provided with a hollow cylindrical portion 3a for accommodating the second valve body 4 and the biasing spring 5 therein, and at the center of the upper peripheral surface of the cylindrical portion 3a, as shown in FIG. An upper hole 3b having a diameter through which the lower connecting rod of the lever can be inserted is provided. Further, as shown in FIG. 4, a similar opening is also provided in the center of the lower peripheral surface of the cylindrical portion 3a. In manufacturing, the lower hole 3c and the upper hole 3b are vertically penetrated through the cylindrical portion 3a and have the same diameter. However, the lower hole 3c serves as an outlet for bubbles in the valve mechanism. Have different purposes of opening.

  As shown in FIG. 4, the internal structure of the socket 3 includes a valve seat 3d of the second valve body 4 inside the primary side of the cylindrical portion 3a, and a female side to which a cap 6 is screwed on the secondary side. A screw 3e is provided. The valve seat 3d is formed around the secondary side opening of the female screw hole 3g by providing the female screw hole 3g at the center of the closing portion 3f existing on the primary side of the cylindrical portion 3a.

  The female screw hole 3g is a portion to which the male screw 22a of the secondary side mounting shaft 22 is screwed when the valve rod 2 is attached to the socket 3, but in the case of the present embodiment, the female screw hole 3g is engraved. The length, that is, the thickness of the lid portion 3f is matched with the engraved length of the secondary male screw 22a of the valve rod 2. Therefore, when the secondary male screw 22a of the valve rod 2 is screwed into the female screw hole 3g of the socket 3, as shown in FIG. 5, a part of the distal end of the secondary mounting shaft 22 of the valve rod 2 is closed. While passing through the portion 3f and protruding into the cylindrical portion 3a, the three injection holes 24 provided in the protruding shaft portion are also located inside the cylindrical portion 3a. As a result, the internal flow path 23 provided in the valve rod 2 is communicated with the inside of the socket 3, and the flow path of beer necessary for producing foam is guided.

  In addition, in this embodiment, from the viewpoint of improving the sealing property, a circular recess 3h is provided in the primary side surrounding of the female screw hole 3g, and the circular recess 3h is attached to the secondary side mounting shaft 22 of the valve rod 2. It is a portion into which the ring 22b is fitted. Further, a female screw portion 3i with which the cap 6 is screwed is provided on the inner peripheral surface of the secondary side opening of the cylindrical portion 3a.

  Next, the second valve element 4 that controls the pouring of bubbles will be described in detail. The second valve element 4 includes a slider 41 that slides in the socket 3 and a seal that is attached to the primary side end surface of the slider 41. It consists of a combination of rings 42.

  As shown in FIG. 4, the slider 41 has a solid cylindrical portion 41a having a diameter slightly smaller than the inner diameter of the cylindrical portion 3a of the socket 3 as a main portion, and as shown in FIG. And a supporting convex portion 41c of the biasing spring 5 is projected on the secondary end surface.

  Further, the solid cylindrical portion 41a is provided with a through hole 41d which is located between the mounting hole 41b and the secondary side end surface and which vertically penetrates. The through hole 41d does not communicate with the mounting hole 41b, and thus the secondary side of the mounting hole 41b is closed. The upper opening of the through hole 41d communicates with the upper hole 3b of the socket 3 when the slider 41 is housed in the socket 3. As shown in FIG. 5, the connecting rod at the tip of the cock lever (not shown) is connected. By inserting C into the through hole 41d through the upper hole 3b of the socket 3, the swing of the cock lever is converted into the sliding movement of the slider 41.

  Note that the lower opening of the through hole 41d also communicates with the lower hole 3c of the socket 3, but the lower opening functions as a spout for bubbles, as in the case of the lower hole 3c of the socket 3. Is. The reason why the upper and lower openings having such different functions are provided so as to penetrate is because of the manufacturing reason that they can be formed in a single step, and the present invention is not necessarily limited to this structure.

  On the other hand, as shown in FIG. 4, the seal ring 42 has a hollow conical cylinder 42a as a main part, and a small diameter part 42b at the primary side edge thereof to form an engagement step 42c. ing. The small-diameter portion 42b is exposed from the primary end surface of the slider 41 when the elastic cylinder 42a is fitted into the mounting hole 41a of the slider 41 and can be brought into close contact with the valve seat 3d of the socket 3, as shown in FIG. Is. In this state, the engagement step portion 42c functions as a retainer for the seal ring 42, and as a result, the seal ring 42 is attached to the slider 41 in a fitted and dead state.

  In this way, the inner diameter of the elastic cylinder 42a in the seal ring 42 attached to the slider 41 is set so that the tip of the secondary side attachment shaft 22 of the valve rod 2 can be inserted tightly. Here, an air hole 41e communicating with the outside air is provided in the mounting hole 41a of the slider 41, and when the protruding shaft portion of the secondary side mounting shaft 22 of the valve rod 2 is inserted into the seal ring 42, the mounting hole 41a is formed. The internal pressure of the body is not increased to prevent the insertion.

  Finally, the urging spring 5 is composed of a coil spring that can be housed in the socket 3, and the second valve body 4 of the socket 3 is fixed to the socket 3 by a cap 6 that is screwed into the secondary side opening (female screw portion 3h) of the socket 3. The elastic member is elastically biased so as to come into contact with the inner surface of the lid 3f, and as shown in FIG. 5, the small diameter portion 42b of the seal ring 42 is always seated on the valve seat 3d in the socket 3. The cap 6 may be configured to compress the biasing spring 5 by a predetermined amount when mounted on the secondary side opening of the socket 3.

  According to the valve mechanism having the above structure, as shown in FIG. 1, when the cock lever L is in the upright neutral position, the first valve body 1 is seated on the valve seat B of the cock body H from the primary side, The connection between the connection port J and the beer pouring nozzle N1 is shut off to stop the beer pouring. At the same time, the second valve body 4 is seated on the valve seat 3d in the socket 3 by the biasing spring 5, and all the injection holes 24 formed in the secondary side mounting shaft 22 of the valve rod 2 are the second valve body. Blocking by the seal ring 42 of No. 4 also blocks the pouring of bubbles. Further, in this embodiment, the small diameter portion 42b of the seal ring 42 is also elastically seated on the valve seat 3d of the socket 3 to reliably prevent the leakage of bubbles from the injection hole 24. That is, in this embodiment, the inner hole of the seal ring 42 and the small diameter portion 42b have a double seal structure.

  When the cock lever L is tilted back and forth from this pouring stop state, the connecting rod C, which is a force point, is displaced to the primary side, thereby pressing the second valve body 4 to the primary side, and as a result, the valve mechanism of the present embodiment. By sliding the accommodating portion S to the primary side as a whole, the conical body 11 of the first valve body 1 separates from the valve seat B of the cock body H, so that beer passes from the connection port J through the outer periphery of the conical body 11. Then, it is poured from the beer pouring nozzle N1. At this time, since the second valve body 4 maintains the seated state of FIG. 1, bubbles are not poured out and only beer is poured out.

  On the other hand, when the cock lever L is tilted inward, the connecting rod C is displaced to the secondary side this time, so that the force for sliding the second valve body 4 to the secondary side acts. At this time, since the first valve body 1 is seated on the valve seat B of the cock body H, its displacement on the secondary side is regulated, and the valve rod 2 and the socket 3 connected to the second valve body 2 are also regulated. Since the displacement to the next side is restricted, the beer stop position in FIG. 1 is maintained. That is, even if the cock lever L is tilted inward, the first valve body 1, the valve rod 2, and the socket 3 do not interlock with this. Therefore, the second valve body 4 alone slides to the secondary side while compressing the biasing spring 5.

  As the second valve body 4 slides to the secondary side in this way, the injection hole 24 of the valve rod 2 is exposed from the seal ring 42 of the second valve body 4. By exposing the injection hole 24, beer introduced from the introduction hole 11c of the first valve body 1 is injected from the injection hole 24 through the internal flow path 23 of the valve rod 2. When beer is introduced into the internal flow path 23 from the introduction hole 11c, it may be already foamed, but in any case, the beer in the internal flow path 23 is completely foamed by the injection from the injection hole 24. Become. Then, the foam is discharged from the foam pouring nozzle N2 through the gap between the second valve body 4 and the socket 3.

  FIG. 7 is an enlarged view of a main part around the second valve body 4 in the bubble pouring state, and accordingly, the valve mechanism of the present embodiment is advantageous for stable pouring of finer bubbles. Explain that. That is, in the valve mechanism of the present embodiment, beer (or foam) is injected from the fine holes (injection holes 24) provided in the valve rod 2 to generate small-diameter bubbles. Since it is opened to the side, the injection pressure does not directly act on the second valve body 4. Therefore, during the injection of bubbles from the injection hole 24, the biasing spring 5 is not inadvertently compressed and the valve opening position of the second valve body 4 is stabilized.

  Further, in the valve mechanism of the present embodiment, the flow path of bubbles from the injection hole 24 to the lower hole 3c of the socket 3 (the inlet of the foam pouring nozzle N2) is extremely narrow, and as a result, only fine bubbles are poured out. It is done. That is, in the valve mechanism of the present embodiment, the vertical gap X between the primary end surface of the second valve body 4 and the inner surface of the lid 3f of the socket 3, and the outer peripheral surface of the second valve body 4 and the inner surface of the socket 3 Bubbles circulate through the horizontal gap Y between the peripheral surfaces as a flow path. As described above, the gap X is kept constant because the second valve body 4 is stable during the injection of bubbles from the injection hole 24.

  The clearance Y, which is the final flow path, may be as small as the minimum clearance with which the second valve body 4 slides in the socket 3, and thus can be made as small as manufacturing precision allows. The size of the gap Y depends on the viscosity of beer, the temperature, and the injection pressure, and thus the size is not limited, but has a clearance that allows the bubbles generated in the gap X to flow as bubbles. Therefore, in the present invention, finer bubbles can be poured out as compared with those in which bubbles immediately after injection are discharged almost as they are.

  As described above, according to the valve mechanism of the present embodiment, extremely fine bubbles can be generated, but as a more preferable configuration, the socket 3 has a mirror-finished inner surface. With this configuration, this foam can be supplied to the foam pouring nozzle N2 of the cock body H while maintaining the fineness when passing through the gap Y.

  As a method of mirror-finishing the inner surface of the socket 3, Superoll (registered trademark) processing can be exemplified, but the method is not limited thereto.

  As described above, when the beer flow path and the foam flow path are mirror-finished, not only can high-quality beer be provided, but also when cleaning the beer pouring cock, dirt can be reliably washed off. effective.

1 Beer pouring valve (first valve)
11 Conical Body 11c Beer Introducing Hole 12 Packing 2 Valve Bar 21 Primary Side Mounting Shaft 22 Secondary Side Mounting Shaft 23 Internal Flow Path 24 Injection Hole 3 Socket 3d Valve Seat 3f Closing Portion 4 Bubble Discharge Valve ( (Two valves)
41 Slider 41d Through hole 42 Seal ring 42b Small diameter part 5 Energizing spring 6 Cap H Cock body L Cock lever B Ball joint C Connecting rod J Connection port S Storage part N1 Beer pouring nozzle N2 Foam pouring nozzle XY Foam flow Road

Claims (1)

In a beer pouring cock with a valve mechanism capable of separately pouring beer and foam in the cock body, a beer that is seated from the primary side on a valve seat provided on the cock body and has the outer surface side as a pouring flow path for beer A first valve body for pouring out, a valve rod having the first valve body on the primary side, and a socket having a protruding shaft portion with its shaft portion protruding inside on the secondary side of the valve rod. , A second valve body for slidably accommodating in the socket and interlocking with a cock lever, and a spring for urging the second valve body toward the protruding shaft portion of the valve rod. An internal flow passage is provided from the first valve body to the protruding shaft portion of the valve rod for introducing beer for producing bubbles, and an injection hole is provided at a terminal end of the internal flow passage in a radial direction of the valve rod. On the other hand, on the primary side of the second valve body, there is a seal through which the protruding shaft portion is densely inserted so as to open and close the injection hole. Provided a ring, the passage of foam in the cock body, have a inner wall surface of the mirror-finishing by NC lathe, further wherein the socket Superoll ® beer dispensing cock has an inner surface of the mirror-finished by machining.

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