JP4155485B2 - Supply fluid pressure regulator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a pressure adjustment device for a supply fluid, and particularly relates to a small pressure adjustment device integrated with a head used for supplying carbon dioxide gas into a draft beer storage barrel.
[0002]
[Prior art]
The draft beer stored in the barrel is melted by supplying carbon dioxide in advance. When selling draft beer, the draft beer is further filled by filling the barrel with carbon dioxide gas, the temperature is lowered through the server, the mug Distribute to etc. However, a carbon dioxide pressure adjusting device is provided between the carbon dioxide gas storage tank and the draft beer storage barrel, and the pressure of the carbon dioxide gas is adjusted by adjusting the lever of the pressure adjusting device according to the temperature of the draft beer. ing.
[0003]
FIG. 4 is a view showing a conventional means for introducing carbon dioxide into a beer storage barrel and supplying it to a server. A carbon dioxide gas supply tank 51 is provided with a pressure regulator 52 for supplying carbon dioxide. A pressure adjusting device 52 and a beer storage barrel 53 are connected. Further, the beer storage barrel 53 is connected to the server 54 via the head 55, and the beer storage barrel 53 can be easily replaced by the operation of the head 55. Carbon dioxide gas is supplied from the storage tank 51 through the pressure regulator 52 to the beer storage barrel 53 at a predetermined pressure, and continues to dissolve in draft beer up to the saturation pressure.
[0004]
However, if the pressure of the carbon dioxide gas is too low, the carbon dioxide gas previously dissolved in the draft beer is foamed, resulting in a so-called stale beer. Accordingly, the supply of carbon dioxide gas is extremely important, and usually the supply pressure of carbon dioxide gas is manually adjusted by operating the lever of the pressure adjusting device 52 according to the temperature of draft beer.
[0005]
[Problems to be solved by the invention]
In this way, since the lever provided in the carbon dioxide pressure adjustment device must be adjusted each time depending on the draft beer temperature, the pressure management of carbon dioxide gas is extremely troublesome. It will never be done. Therefore, although it is desirable that the amount of carbon dioxide dissolved in the draft beer is constant, the carbon dioxide supply pressure is not appropriate, resulting in a change in the amount of carbon dioxide dissolved, which is brought into the mug through the server. It was pointed out that the taste of draft beer was not constant. That is, the amount of carbon dioxide dissolved in draft beer changes with time, and it is impossible to provide a certain taste. In addition, when the beer storage barrel is replaced due to consumption of draft beer, the temperature of the draft beer in the beer storage barrel changes greatly, so that the taste of draft beer will not be constant unless the supply pressure of carbon dioxide gas is adjusted.
[0006]
Under such circumstances, the present applicant has already proposed various apparatuses for automatically adjusting the pressure of carbon dioxide gas when supplying carbon dioxide gas into the draft beer storage barrel (for example, JP-A-7-76398, JP-A-7- 13994 and JP-A-8-303623), the present invention is a further improvement of these previously proposed pressure regulators, and the temperature of draft beer stored in a barrel. Without adjusting the function of automatically adjusting the pressure of the carbon dioxide gas supplied to the head, especially when replacing a beer storage barrel where pressure adjustment is a problem, a pressure adjusting device and head that were separate in the past And the size of the pressure adjusting device is reduced.
[0007]
[Means for Solving the Problems]
The present invention has the following structure to achieve the above object. That is, a hollow chamber body, a pipe penetrating the hollow chamber, a valve cone externally inserted into the pipe, a cover fixed to one end of the pipe to open and close the hollow chamber, and an opening / closing provided at the other end of the pipe The chamber is divided into A and B chambers by the valve cone, and the A chamber is made an atmospheric pressure chamber and the temperature of the second fluid flowing in the pipe in the A chamber is sensed to determine the spring constant. A changing heat-sensitive spring is attached to elastically support the valve cone, and the B chamber is further divided into a B ₁ chamber and a B ₂ chamber by nozzle contact between the hollow chamber main body and the valve cone, and this nozzle is sandwiched. B ₁ rooms the channel from B ₂ rooms on the mounting portion of the cover provided with the inlet of the first fluid provided, further elastic of the heat-sensitive spring between the valve cone and the cavity main body portion of the B chamber With springs facing each other and front It relates to a pressure adjustment device for a supply fluid that can open and close a cover by moving a pipe with an opening and closing lever, and is usually divided into A and B chambers by a diaphragm or an O-ring attached to a valve cone. It will be.
[0008]
Also preferably, the valve cone, be one of a mounting portion of the diaphragm or O- rings, the pressure regulating device of the feed fluid obtained by dividing into a compartment of the _first chamber and B ₂ rooms B, preferably, An auxiliary spring is mounted in parallel with the heat-sensitive spring, and a check valve is mounted between the hollow chamber body and the cover.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The present invention is an apparatus that automatically adjusts the supply pressure of the first fluid in accordance with the temperature of the second fluid, and in particular, a spring (for example, a spring using a shape memory alloy, shape memory resin, bimetal, etc.) A coil spring, a disc spring, etc.), the temperature of the second fluid is sensed, and the valve cone extrapolated to the pipe is displaced in the axial direction by a change in spring constant or shape. It opens and closes with the nozzle, and automatically adjusts the supply pressure of the first fluid.
[0010]
Here, the A chamber in which the heat sensitive spring is mounted and the B chamber into which the first fluid flows are usually divided by a diaphragm or O-ring mounted on the valve cone, but the sliding resistance of the valve cone can be reduced. Therefore, it is preferable to use a diaphragm. Further, the valve cone, by dividing into the compartment portion of the mounting portion of the diaphragm or O- rings and B ₁ rooms and B ₂ rooms can be easier sliding of the valve cone. Further, normally, in the B chamber, the B ₁ chamber and the B ₂ chamber are separated by contacting the nozzle formed in the hollow chamber main body with the valve seal provided in the valve cone. A valve seal on the part side and a nozzle on the valve cone side may be provided.
[0011]
Thus, the present invention automatically adjusts the supply pressure of the first fluid in accordance with the temperature of the second fluid. For example, in the supply of carbon dioxide gas into the draft beer storage barrel, Carbon dioxide gas having an appropriate pressure is automatically supplied according to the temperature of the draft beer in the barrel. Therefore, in this example of draft beer, the amount of carbon dioxide dissolved in the draft beer is kept almost constant, and the taste of the draft beer itself is always constant.
[0012]
In addition, there is a feature that the heat-sensitive spring and the second fluid are not in direct contact. The heat-sensitive spring functions without being affected at all by the properties of the second fluid. Even when the gas is supplied, the pressure of the supplied carbon dioxide gas is accurately and automatically adjusted by the operation of the heat-sensitive spring.
[0013]
Further, for example, when there is a complex shape such as a spring in the draft beer flow path, the carbon dioxide gas in the draft beer is easily separated due to the turbulent flow caused by the presence of the spring, and the components of the beer are crystallized, When it adheres to a flow path, it becomes a problem that this removal and cleaning are difficult. However, in the present invention, since the heat-sensitive spring providing the pressure adjusting function and the draft beer do not come into contact with each other, the apparatus does not have such a defect at all. By attaching an auxiliary spring in parallel with the heat sensitive spring, the operation of the valve cone, which is not sufficient with the heat sensitive spring alone, can be compensated, and the pressure of the supplied carbon dioxide gas can be automatically adjusted more accurately. It becomes.
[0014]
In the present invention, in addition to the function of automatically adjusting the pressure of the carbon dioxide gas, a cover fixed to one end of the pipe to open and close the hollow chamber, and an opening / closing lever provided at the other end of the pipe are provided. The cover can be freely opened and closed by moving the pipe with the opening and closing lever. That is, for example, when replacing a beer storage barrel, it is necessary to stop the carbon dioxide gas supplied to the beer storage barrel. Conventionally, this role has been played by the head. In addition to the valve cone extrapolated to the pipe, the pipe itself is also displaced in the axial direction so that the cover opens and closes, so that the carbon dioxide gas can be stopped by closing the cover.
[0015]
Therefore, the head that has been separately provided in the past becomes an integrated compact pressure adjusting device in the present invention, and in particular, even when replacing a beer storage barrel where pressure adjustment is a problem, the replacement itself is easy. Not only that, the pressure of the carbon dioxide gas supplied to the replaced beer storage barrel can be automatically adjusted accurately. In order to prevent backflow of carbon dioxide gas and draft beer when the pressure adjusting device is attached to the beer storage barrel, it is preferable to install a check valve between the hollow chamber body and the cover.
[0016]
【Example】
Hereinafter, the present invention will be described in more detail with reference to examples.
1 and 2 are partially cut-away side views showing a first embodiment of a pressure adjustment device for a supply fluid of the present invention, which is an example used as a device for supplying carbon dioxide gas into a beer storage barrel. In the figure, reference numeral 1 denotes a main body of a pressure adjusting device for a supply fluid. The main body 1 is provided with a hollow chamber, and a pipe 2 passes through the hollow chamber. The hollow chamber is divided into a chamber A and a chamber B by a diaphragm 14 attached to a valve cone 3 extrapolated to the pipe 2.
[0017]
Here, the A chamber communicates with the atmosphere, and the A chamber is provided with a heat-sensitive spring 4 that is extrapolated to the pipe 2, and elastically supports the valve cone 3. On the other hand, in the B compartment, an annular nozzle 5 of the hollow chamber main body 1, this was divided into a _first chamber and a B ₂ rooms B by contact with the flange 6 of opposed valve cone 3, B ₁ rooms in is provided with a flow path 9 into _two chambers B provided with a first fluid inlet 7. The valve cone 3 is supported thermosensitive bullet by a spring 11 opposed to the elastic force of the spring 4 onset, the flange 6, the seat portion ₆₁ in the region between the nozzle 5 abuts is provided.
[0018]
Further, the inlet 7 is supplied with carbon dioxide gas reduced to a predetermined pressure from a carbon dioxide cylinder (not shown), and the inflowing carbon dioxide gas passes through the B ₁ chamber to the B ₂ chamber and further passes through the flow path 9. Flow into Room B ₃ . And it flows out from the exit 8 and a carbon dioxide gas is supplied to the beer storage barrel which is not illustrated. A check valve 15 is attached to the outlet 8 in order to prevent backflow from the beer storage barrel.
[0019]
Now, the hollow chamber body 1 of the pressure regulating device of the feed fluid is formed of a cylindrical body 1 _1, 1 ₂ and the top cover 1 ₃ and the bottom cover 1 ₄ which, hollow chambers are formed by these. The cylindrical body 1 _1, 1 ₂ are integrated is screwed, the top cover 1 ₃ is screwed to the cylindrical body 1 _1. Also, bottom cover 1 ₄ is fixed via the sealing member to the pipe 2, so that mate into _three chambers B. Note that the hollow chamber main body 1, to adjust the elastic force of the heat-sensitive spring 4, the pressure of B ₂ rooms can also be provided an adjusting screw to proper.
[0020]
Then, the cylindrical body 1 _1, 1 ₂ and top cover 1 ₃ a pipe 2 extends through, into the pipe 2, being sealed valve cone 3 is in O- rings 12, slidably externally fitted Yes. Further, the pipe 2 closing lever 16 is attached, by operating the opening lever 16 pipe 2 itself is moved, bottom cover 1 ₄ to open and close the outlet 8 of the _{three-chamber} B. The inlet 2 ₁ side of the pipe 2 is connected to a beer storage barrel (not shown), and the outlet 2 ₂ side is connected to a server (not shown).
[0021]
Here, stainless steel is used as the material of the pipe 2, but it is preferable that the thickness of the pipe 2 be as thin as possible in order to improve heat conductivity. In addition, when a material such as aluminum, copper, iron, or the like having a higher thermal conductivity than stainless steel is used depending on the fluid, the reaction rate with respect to temperature is increased, which is more preferable.
[0022]
Further, the cylindrical body 1 _1, annular nozzle 5 are formed toward the resilient direction of the heat-sensitive spring 4, seat portion ₆₁ is provided on the flange 6 of the valve cone 3 to face the nozzle 5 is, B ₁ rooms, ₂ rooms B is partitioned by this nozzle 5 and the seat portion _61.
[0023]
A spring 11 is mounted in the flow path 9, and the valve cone 3 is elastically supported so as to face the heat-sensitive spring 4. Here, the valve cone 3 is divided into a mounting part 3 ₁ of the diaphragm 14 and a partition part 3 _{2 of} the B ₁ chamber and the B ₂ chamber, and the responsiveness to the heat sensitive spring 4 and the spring 11 is improved. Yes. The valve cone 3 is formed with a through-hole 3 ₃ and communicates with the B ₃ chamber via the flow path 9 so that the pressures in the B ₂ and B ₃ chambers are finally made the same.
[0024]
Now, the first fluid (carbon dioxide) to be supplied enters the B ₁ chamber from its inlet 7, enters the B ₂ chamber through the nozzle 5, and exits from the outlet 8 through the flow path 9. It becomes. On the other hand, the pipe 2 the second fluid from the inlet 2 ₁ (draft beer) is fed, is intended to flow out from the outlet 2 _2. Then, the liquid temperature of the second fluid is transmitted to the heat-sensitive spring 4 in the A chamber, and the spring constant or the shape of the spring changes, thereby changing the force for pushing the valve cone 3 to give elasticity.
[0025]
Here the pressure in the A chamber P ₀ (atmospheric pressure), B ₁ when the pressure of .about.B ₃ chamber and each P ₁ to P _3, the pressure of the _second chamber and the B ₃ rooms B in communication is P ₂ = the P _3. Now, assuming that the force of the heat-sensitive spring 4 is F _A and the force of the spring 11 is F _B , those involved in pressure adjustment, that is, the force that moves the valve cone 3 are P ₂ , F _A , and F _B. Speaking of this P ₂ , the force F ₁ = P ₂ × S ₁ (pressure receiving area of the diaphragm 14 attached to the valve cone 3) involved in pressure adjustment is obtained.
[0026]
Therefore, in the case of F _A> F _B + F _1, as shown in FIG. 1, it is the valve cone 3 is moved to the right side, the nozzle 5 and the seat portion ₆₁ is opened without contact, first The fluid flows from the B ₁ chamber through the nozzle 5 into the B ₂ chamber and flows out from the outlet 8 of the B ₃ chamber. On the other hand, in the case of F _A <F _B + F _1, as shown in FIG. 2, contact with the seat portion ₆₁ and the nozzle 5 of the valve cone 3 is the valve cone 3 is moved to the left, is closed nozzle 5 As a result, the flow of the first fluid is interrupted.
[0027]
However, since the heat sensitive spring 4 senses the liquid temperature of the second fluid flowing in the pipe 2, the pressing force F _A of the valve cone 3 changes. Thus, between the seat portion ₆₁ of the nozzle 5 and the valve cone 3 by the temperature of the second fluid is automatically opened and closed, the pressure of the second fluid increases or decreases, automatically adjusting the supply amount of the first fluid Will be able to.
[0028]
Moreover, by operating the opening lever 16 pipe 2 itself is moved, bottom cover 1 ₄ to open and close the outlet 8 of the _{three-chamber} B. Therefore, Shimere the bottom cover 1 ₄ by the opening and closing lever 16, it is possible to stop the easy supply of the first fluid, which is assumed to conventional head are integrated.
[0029]
FIG. 3 is a partially cut side view showing a second embodiment of the pressure adjusting device for a supply fluid of the present invention, and is an example used as a device for supplying carbon dioxide gas into a beer storage barrel. In the second embodiment, the hollow chamber is divided into an A chamber and a B chamber by an O-ring 13 instead of the diaphragm 14 of the first embodiment. Further, in the second embodiment, since the auxiliary spring 10 is mounted in parallel with the heat-sensitive spring 4 in addition to the heat-sensitive spring 4, even if the sliding resistance of the O-ring 13 is large, the valve cone 3 is It can be moved easily. In the first embodiment, a similar auxiliary spring can be mounted.
[0030]
【The invention's effect】
The present invention is a pressure adjustment device for a supply fluid having the above-described structure. Since a heat sensitive spring is used, the spring constant changes depending on the liquid temperature of the second fluid, and the pressure of the first fluid is adjusted according to this change. This is what you can do. For this reason, for example, by using the pressure adjusting device of the present invention for supplying carbon dioxide gas to a beer storage barrel, the pressure of carbon dioxide gas supplied thereto can be automatically adjusted according to the liquid temperature of draft beer. Therefore, the amount of carbon dioxide dissolved in the liquid can always be kept constant.
[0031]
Moreover, when the open / close lever is operated, the pipe itself moves, and the cover opens and closes the outlet of the first fluid. Therefore, the pressure adjusting device and the head, which have been separate in the past, are integrated to reduce the size of the pressure adjusting device, and the beer storage barrel can be easily replaced. The supply pressure of carbon dioxide gas to the beer storage barrel can be automatically adjusted accurately.
[Brief description of the drawings]
FIG. 1 is a partially cut-away side view showing a first embodiment of a pressure adjustment device for a supply fluid according to the present invention, and showing a state in which a valve cone is opened.
FIG. 2 is a partially cut-away side view showing a first embodiment of a pressure adjustment device for a supply fluid according to the present invention, and showing a state in which a valve cone is closed.
FIG. 3 is a partially cut-away side view showing a second embodiment of a pressure adjustment device for a supply fluid according to the present invention.
FIG. 4 is a diagram showing introduction of carbon dioxide gas into a conventional beer storage barrel and supply to a server.
[Explanation of symbols]
Hollow chamber main body of the pressure adjusting device 1 ‥‥ supply fluid ₁ 1, 1 ₂ ‥‥ constituting the pressure regulator body portion of the feed fluid cylindrical body 1 ₃ ‥‥ top cover 1 ₄ ‥‥ bottom cover 2 ‥‥ pipe 2 ₁ ... Pipe 2nd fluid inlet 2 ₂ ... Pipe 2nd fluid outlet 3 ... Valve cone 3 ₁ ... Valve cone diaphragm mounting 3 ₂ ... Valve cone B ₁ chamber and B ₂ Chamber partition 3 ₃ Through hole 4 formed in valve cone Heat sensitive spring 5 Nozzle 6 Flange 6 ₁ Flange seat 7 First fluid inlet 8 First fluid Fluid outlet 9 Flow path 10 Auxiliary spring 11 Spring 12 O-ring 13 O-ring 14 Diaphragm 15 Check valve 16 Open / close lever A, B ₁ , B ₂ , B ₃ ... Hollow chamber 51 ... Carbon dioxide gas storage tank 52 ... Pressure adjustment Device 53 ... beer storage barrel 54 ... server 55 ... head

Claims (5)

A hollow chamber body, a pipe penetrating the hollow chamber, a valve cone externally attached to the pipe, a cover fixed to one end of the pipe to open and close the hollow chamber, and an open / close lever provided at the other end of the pipe The hollow chamber is divided into A and B chambers by the valve cone, the A chamber is made an atmospheric pressure chamber, and the temperature of the second fluid flowing in the pipe in the A chamber is sensed to change the spring constant. the valve cone is supported elastically by mounting the heat-sensitive spring, further partitioned into _one room and B ₂ rooms B by the nozzle contacting the B chamber at between the hollow chamber main body and the valve cone, B ₁ across the nozzle chamber in a flow passage provided extending from B ₂ rooms provided with the inlet of the first fluid to the mounting portion of the cover, further the elastic direction of the heat sensitive spring between the B chamber of the valve cone and the cavity main body portion Opening and closing provided with opposing springs Bar pressure regulating device of the feed fluid, characterized in that the openable and closable cover by moving the pipe. 2. The supply fluid pressure adjusting device according to claim 1, wherein the hollow chamber is divided into A and B chambers by a diaphragm or an O-ring attached to the valve cone. The valve cone, said diaphragm or O- ring and mounting portion of, B ₁ rooms and pressure regulator of the feed fluid formed by dividing B into the _second chamber compartment claims second Claims. 4. The supply fluid pressure adjusting device according to claim 1, wherein an auxiliary spring is mounted in parallel with the heat-sensitive spring. 5. The supply fluid pressure adjusting device according to claim 1, wherein a check valve is mounted between the hollow chamber main body and the cover.

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