JPH0612494B2 - Temperature sensitive gas pressure control valve - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a temperature-sensitive gas pressure regulating valve for regulating gas pressure in a container for carbonated beverages such as beer.

[Conventional technology]

Conventionally, when a liquid in which a gas is dissolved, for example, a carbonated beverage such as beer is stored in a container when there is a temperature fluctuation,
Since the gas pressure of the contents changes, there is a phenomenon that the degree of foaming changes significantly when the contents are poured out. Insulation of the storage container is performed to avoid such a phenomenon,
Not a perfect method. Therefore, a method is often adopted in which a pressurized gas can be supplied to the storage container via a pressure reducing valve and a safety valve is provided to prevent the internal pressure from becoming too high.

When applying such a gas pressure adjusting method to, for example, a beer container, it is necessary to replenish carbon dioxide according to the decrease in the internal volume, and the temperature reducing valve for supplying carbon dioxide and the safety valve for releasing carbon dioxide are both used. There has been an attempt to facilitate the adjustment of the internal pressure by using the one configured so that the set pressure changes.

However, in such a system, it is possible to operate satisfactorily for the first time by selecting those whose temperature-operating pressure characteristics of the pressure reducing valve and the relief valve are similar, and setting and combining so that the operating points are slightly shifted, However, it is not easy to find and combine valves having similar temperature-operating pressure characteristics in a wide temperature range, and thus there is a problem in that they are poorly interchangeable.

Therefore, in order to eliminate the difference in operating characteristics between the pressure reducing valve and the relief valve, the pressure reducing valve and the relief valve are incorporated into one valve body, and these are linked by a pressure responsive mechanism connected to a single temperature sensitive cylinder. A temperature-sensitive pressure regulating valve (Fig. 4) and a pressure regulating system (Fig. 5) using the same have been proposed (Shokai 62-96172). In this pressure adjusting system, carbon dioxide gas is supplied from the carbon dioxide gas pressure container A to the beer container E via the first pressure reducing valve B, the pressure gauge C, and the temperature-sensitive pressure adjusting valve D, and the internal pressure of the container E becomes too high. The carbon dioxide gas is released from the pressure adjusting valve D to the outside of the system. Here, F is a pressure gauge for the container E, and H is a pouring cock.

[Problems to be Solved by the Invention]

In such a temperature-sensitive pressure control valve, the gas pressure is adjusted based on the temperature of the container for beer, etc., and the operation of attaching and detaching the temperature-sensing cylinder must be repeated each time the container is replaced. There is a problem that the connecting tube of the cylinder is easily damaged.

Furthermore, when a cooler is provided in the middle of a pouring pipe for beer or the like to adjust the temperature, if the temperature of the container is low, the gas pressure becomes insufficient and the pouring flow rate decreases.

Therefore, the present invention is a temperature-sensing device having a characteristic that it is not particularly troublesome to attach and detach even when exchanging a container, and that the flow rate of beer or the like can be increased by temporarily increasing the gas supply amount during pouring. The purpose of the present invention is to provide a gas pressure control valve.

[Means for Solving the Problems]

The temperature-sensitive gas pressure regulating valve of the present invention that can achieve the above-mentioned object includes a gas pressure reducing valve provided between the primary port and the secondary port, and a gas relief valve provided between the secondary port and the outside. Is operated by a single diaphragm to adjust the pressure of the gas necessary to maintain the amount of dissolved gas in the liquid in the container communicating with the secondary opening within a predetermined range. The valve is provided with a temperature sensing cylinder communicating with the pressure chamber on the outer surface side of the diaphragm with a delivery conduit adjacent to the delivery liquid through which the delivery liquid from the container passes, and a gas introduction port for introducing the pressure of the dissolved gas from the outside. An independent pressure regulating chamber is provided on the inner surface side of the diaphragm, and the rise in temperature of the temperature sensing cylinder and the decrease in pressure of the pressure sensing chamber are in the opening direction of the gas pressure reducing valve after the gas relief valve is closed, and in the temperature sensing cylinder. And the rise of the pressure adjusting chamber pressure are generated in the opening direction of the gas relief valve after the gas pressure reducing valve is closed. It is characterized in that it has configured to.

[Action]

In the temperature-sensitive gas pressure control valve of the present invention, the conduit through which the fluid delivered from the liquid container passes is provided adjacent to the temperature-sensitive cylinder, so that the pressure of the temperature-sensitive medium corresponding to the temperature of the delivered liquid is the diaphragm. If the pressure of the dissolved gas is applied to the outer surface side and the pressure of the dissolved gas is applied to the inner surface side of the diaphragm, the gas pressure on the secondary side of the gas pressure adjusting valve is automatically adjusted by the balance of these pressures. Also, changes in the amount of gas dissolved in the liquid caused by changes in temperature are automatically corrected.

And again, when pouring out beverages, the amount of gas replenishment automatically increases so that the pressure in the container does not drop,
If the gas pressure in the container still decreases, temporarily disconnect the communication between the container and the pressure regulation chamber, open the pressure regulation chamber to reduce the pressure, and open the pressure reducing valve. The gas pressure can be temporarily raised to an arbitrary height to secure the pouring flow rate. If the gas pressure in the container is again applied to the pressure adjusting chamber after performing such temporary pressure control, the excess gas in the container is released and the previous state is restored.

〔Example〕

An example of the temperature-sensitive gas pressure regulating valve of the present invention is shown in FIGS.

In the figure, the valve body 1 is provided with a primary inlet 1a followed by a primary chamber 1
b is formed, communicates with the secondary chamber 1d via the valve seat 1c, and continues to the secondary opening 1e.

Gas relief valve 2 provided with valve seat 2a in primary chamber 1b
Are provided so as to be urged toward the valve seat 1c by the valve spring 3. The gas relief valve 2 which itself constitutes the valve body of the pressure reducing valve has a relief passage 2 along the axis.
b is provided, and the gas in the secondary chamber 1d is supplied to the bottom cap 5
It can be guided to the outside through the discharge port 5a. 4 is a spacer for supporting the valve spring 3, 4a is a packing for sealing the gap between the spacer 4 and the gas relief valve 2, and 4b is a spring for suppressing the packing 4a.

The pressure regulation chamber 1f formed in the upper part of the valve body 1 is closed by the diaphragm 6, and the gas introduction port 1g directed to the outside.
Is independent of others only through. Diaphragm 6
And a pressure chamber 7a is formed between the upper cover 7 and the pressure chamber 7a.
A liquid delivery conduit 9 is sandwiched and fixed between a temperature-sensitive cylinder 8 communicating with a via a thin tube 8a and an upper lid 7. An adsorbent 8b such as activated carbon is contained in the temperature-sensitive cylinder 8 and a temperature-sensitive medium is further enclosed so that a pressure corresponding to the temperature of the delivery conduit 9 is applied to the outer surface side of the diaphragm 6. It has become.

The movement of the diaphragm 6 is transmitted to the stem 10 by the actuating spring 10a via the contact plate 10b which is crimped to the lower surface side of the diaphragm 6. Since the stem 10 penetrates the valve seat 1c and its tip portion contacts the valve seat 2a and closes the escape passage 2b, the temperature sensitive tube 8 is provided.
When the diaphragm 6 moves downward due to a rise in the temperature of the valve or a decrease in the pressure applied to the pressure regulating chamber 1f, that is, a state in which the amount of dissolved gas in the liquid is insufficient, the relief passage 2b is first closed. , Then the gas relief valve 2
That is, the pressure reducing valve body is pushed downward, the valve seat 2a is separated from the valve seat 1c, and the gas can flow from the primary port 1a.
On the contrary, the temperature of the delivery conduit 9 decreases, or the gas inlet 1
When the pressure from g rises, the valves all operate in reverse.

Reference numeral 10c is a spring bearing for the operating spring 10a, and 11 is an operating point adjusting screw.

In such a gas pressure adjusting valve of the present invention, the temperature-sensitive medium sealed in the temperature-sensitive cylinder 8 may be appropriately selected according to the characteristics of the controlled gas whose pressure is to be adjusted. That is, for example, when carbon dioxide gas is supplied into a carbonated beverage container such as beer to adjust the carbon dioxide gas content in the beverage and the foaming of the beverage is to be adjusted to the most preferable state, the carbon dioxide that gives the optimum foaming state is obtained. The relationship between the gas pressure and the beverage temperature may be obtained in advance, and a temperature-sensitive medium capable of reproducing such a relationship may be enclosed. In order to realize such temperature / pressure characteristics, it is preferable to appropriately select and use the types and amounts of the adsorbent and the temperature-sensitive medium as the temperature-sensitive medium to be enclosed in the greenhouse.

FIG. 3 shows the system configuration when such a temperature-sensitive gas pressure regulating valve of the present invention is used for regulating the carbon dioxide gas pressure of a carbonated beverage container such as beer. The outlet 1a of the pressure reducing valve B may be directly attached, and the outlet 1e thereof may be connected to the gas inlet of the carbonated beverage container E by a conduit. Further, a carbonated beverage delivery pipe is connected from the carbonated beverage container E to the delivery conduit 9 of the valve D, and from the delivery conduit 9 to the cooler G, so that the carbonated beverage passes from the container E through the delivery conduit 9 of the valve D. To be sent to the cooler G. In addition, 1 g of gas inlet for valve D
Is connected to a three-way switching valve K via a conduit 1, and the secondary port 1e
It is configured to supply either one of the gas pressure and the atmospheric pressure, which is introduced from the above to the valve K via the conduit J, to the pressure regulating chamber 1f.
Here, it is also possible to interlock the pouring cock H and the valve K so that the pressure regulating chamber 1f is opened to the atmospheric pressure via the gas introduction port 1g of the valve D at the time of pouring.

In the gas pressure adjusting system configured as described above,
The carbon dioxide content in the carbonated drink delivered from the container E is within a preferable range corresponding to the temperature, and the pressure in the container can be temporarily increased manually during pouring, so that the flow rate is It can be prevented from falling and can be poured quickly.

〔The invention's effect〕

The temperature-sensitive gas pressure regulating valve of the present invention can significantly reduce the occurrence of a failure because it is not necessary to attach and detach the temperature-sensitive cylinder when replacing the container, and the dissolved gas content in the liquid in the container is liquid. The optimum range is automatically adjusted according to the temperature. When it is necessary to increase the outflow rate when the gas-dissolved liquid is delivered, the automatic pressure adjusting function is temporarily stopped using the three-way switching valve and the pressure in the pressure adjusting chamber is reduced. As a result, the gas pressure in the container can be arbitrarily increased, so that the liquid can be delivered in a short time without reducing the dissolved gas content adjusted within the optimum range.

Furthermore, since the temperature sensitive tube is provided adjacent to the delivery conduit, even if the temperature of the gas pressure regulating valve is lowered due to adiabatic expansion of the supply gas when passing through the pressure reducing valve, it is not affected by the liquid. There is also an effect that the pressure in the container can be quickly restored to the optimum range after the completion of the delivery.

[Brief description of drawings]

1 and 2 are views showing the structure of an example of the temperature-sensitive gas pressure adjusting valve of the present invention, and FIG. 3 is a gas of a carbonated beverage such as beer using the temperature-sensitive gas pressure adjusting valve of the present invention. FIG. 4 is a structural diagram of a pressure regulating system, FIG. 4 is a structural diagram of a conventional pressure regulating valve, and FIG. 5 is a structural diagram of a pressure regulating system using a conventional pressure regulating valve. DESCRIPTION OF SYMBOLS 1 ... Valve main body, 1a ... Primary port, 1c ... Valve seat, 1e ... Secondary port, 1f ... Pressure regulation chamber, 1g ... Gas inlet port, 2 ... Gas relief valve, 6 ... Diaphragm, 7a ... Pressure chamber, 8 ... Temperature sensitive tube, 9
... liquid delivery conduit, 10 ... stem, A ... gas pressure vessel,
B ... 1st pressure reducing valve, D ... Temperature-sensitive pressure regulating valve, E ... Beverage container, G ... Cooler, H ... Pour out cock, I, J ... Conduit,
K ... three-way switching valve.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomio Okada 1-12-43 Oyata, Iruma City, Saitama Prefecture, Sagimiya Works Toyooka Plant (72) Inventor Shigetoshi Nakajima 1-12-43 Oyada, Iruma City, Saitama Prefecture Stock Company Saginomiya Works Toyooka Plant (56) References JP 61-80312 (JP, A)

Claims (1)

[Claims] 1. A gas pressure reducing valve provided between the primary port (1a) and the secondary port (1e) and a gas relief valve provided between the secondary port (1e) and the outside are integrated into a single unit. Operated by the diaphragm (6) of
A temperature-sensitive gas pressure control valve for controlling the pressure of gas required to maintain the amount of dissolved gas in the liquid in the container communicating with the secondary port (1e) within a predetermined range, and the diaphragm (6 ) Is provided adjacent to the temperature sensing tube (8) communicating with the pressure chamber (7a) on the outer surface side, and a delivery conduit (9) through which the delivery liquid from the container passes is provided, and the pressure of the dissolved gas is introduced from the outside. Inlet (1g)
An independent pressure regulating chamber (1f) having a pressure sensor (1f) is provided on the inner surface side of the diaphragm (6), and the rise in temperature of the temperature sensing cylinder (8) and the decrease in pressure of the pressure regulating chamber (1f) are the gas following the closing of the gas relief valve. The pressure reducing valve is configured to operate in the opening direction, and the temperature drop in the temperature sensing cylinder (8) and the pressure in the pressure adjusting chamber (1f) are configured to operate in the opening direction of the gas relief valve after the closing of the gas pressure reducing valve. A temperature sensitive gas pressure control valve.