JPH02292610A - Thermally sensitive type gas pressure adjusting valve - Google Patents

Abstract

PURPOSE:To adjust a dissolved gas content in liquid in a container within an optimum range in correspondence with a liquid temperature by operating a valve by the change of temperature of liquid or the change of pressure in dissolved gas. CONSTITUTION:A pressure adjusting room 1 formed at the upper part of a valve mainbody 1 is closed by a diaphragm 6 and it opens only to a gas pressure guiding port 1g for outside. An adsorbent 8b and thermally sensitive liquid are enclosed in a thermally sensitive cylinder 8, and pressure is added to the outer surface of the diaphragm 6 in accordance with the temperature of a liquid transmitting conductor 9. The movement of the diaphragm 6 is transmitted to a system 10. When the diaphragm 6 moves downward, an escape path 2b is closed, and the valve 2 is pressed downward and a valve sheet 2a is detached from a seat 1c. When the temperature of the conductor 9 drops or pressure from the guiding port 1g rises, the valve 2 executes a reverse action.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] 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 containing dissolved gas, such as a carbonated drink such as beer, is stored in a container, if there are temperature fluctuations,
There is a phenomenon in which the degree of foaming changes significantly when pouring out the contents due to changes in the gas pressure of the contents. To avoid this phenomenon, storage containers are insulated, but
It's not a foolproof method. Therefore, a method is often adopted that allows pressurized gas to be supplied to the storage container via a pressure reducing valve and also provides a safety valve to prevent the internal pressure from becoming too high.

When applying such a gas pressure adjustment method to a beer tank, for example, it is necessary to replenish carbon dioxide gas as the content decreases, and it also functions as a pressure reducing valve for supplying carbon dioxide gas and a safety valve for releasing it. Some devices have attempted to easily adjust the internal pressure by using a device configured such that the set pressure changes depending on the temperature.

However, in such a system, a pressure reducing valve and a relief valve that have similar temperature-operating pressure characteristics are selected, and the operating points are set to be slightly different from each other in order to operate satisfactorily. It is not easy to find and match valves with similar temperature-operating pressure characteristics over a wide temperature range, and therefore there is also the problem of poor compatibility.

In order to eliminate the inconvenience caused by the difference in characteristics of the pressure #JI valve, a pressure reducing valve and a relief valve are incorporated into one valve body, and these are connected by a pressure responsive mechanism connected to a single temperature sensing cylinder. Temperature-sensitive pressure regulating valves that are linked together (Fig. 4)
A pressure regulating system (Fig. 5) using this has been proposed (Utility Model Application No. 62-96172). In this pressure regulation system, carbon dioxide gas is supplied from the carbon dioxide pressure vessel A to the beer tank via the first pressure reducing valve B, pressure gauge C, and thermal pressure regulating valve D, and the internal pressure of the tank E becomes too high. The carbon dioxide gas is released from the pressure regulating valve D to the outside of the system. Here, F is the pressure gauge for container E, and H
is a pouring cock.

[Problem to be solved by the invention]

In such temperature-controlled pressure regulating valves, the gas pressure is adjusted based on the temperature of the beer container, etc., and the temperature-sensitive cylinder must be repeatedly attached and detached each time the container is replaced. There is a problem that the connecting tube of the cylinder is easily broken.

Furthermore, when a cooler is installed in the middle of a pouring pipe for beer or the like to adjust the temperature, there is a problem that if the temperature of the container is low, the gas pressure will be insufficient and the pouring flow rate will be reduced.

Therefore, the present invention has developed a temperature-sensitive gas pressure system that does not require any trouble when replacing the container and can increase the flow rate of beer, etc. by increasing the gas supply during pouring. The purpose was to provide a regulating valve.

[Means to solve the problem]

The temperature-sensitive gas pressure regulating valve of the present invention that can achieve the above object includes a gas pressure reducing valve provided between the primary side and the secondary side, and a gas relief valve provided between the secondary side and the outside. and an automatic valve operated by a single diaphragm to adjust the gas pressure necessary to maintain the amount of dissolved gas in the liquid in the container connected to the secondary side within a predetermined range. A delivery conduit section through which the liquid can flow is provided adjacent to a thermostatic section communicating with a pressure chamber on the outer surface side of the diaphragm, and the pressure of the dissolved gas can be introduced into a pressure regulating chamber on the inner surface side of the diaphragm. A gas introduction path is provided, and the gas pressure reducing valve is opened when the temperature of the liquid increases by 1 F or the pressure of the dissolved gas decreases, and the gas relief valve is opened when the temperature of the liquid decreases or the pressure of the dissolved gas increases. It is characterized by the fact that

[For production]

In the temperature-sensitive gas pressure regulating valve of the present invention, the conduit through which the fluid sent from the liquid container passes is provided adjacent to the thermostatic section, so that the pressure of the temperature-sensitive medium corresponding to the temperature of the delivered liquid is adjusted to the diaphragm. If the pressure of the dissolved gas is applied to the outside surface of the diaphragm, and the pressure of the dissolved gas is applied to the inside surface of the diaphragm, the gas pressure on the secondary side of the gas pressure regulating valve is determined by the balance of these pressures, and the pressure of dissolved gas is applied to the inside of the diaphragm. gas dissolution■
changes are automatically corrected.

Furthermore, when pouring out drinks, etc., the amount of gas replenishment is automatically increased so that the pressure within the container does not drop. Furthermore, if you want to temporarily increase the gas pressure in the container to ensure the pouring flow rate, you can lower the pressure in the pressure regulating chamber by temporarily opening it. can also be increased arbitrarily. After performing such temporary pressure control, if the gas pressure inside the container is applied again to the pressure regulating chamber, the excess gas inside the container is released and the pressure returns to the previous pressure.

〔Example〕

Examples of the temperature-sensitive gas pressure regulating valve of the present invention are shown in FIGS. 1 and 2.

In the figure, a primary chamber lb is formed in the valve zero body 1 following a gas port 1a, which communicates with a secondary chamber ld via a valve seat 1c, and further continues to a gas outlet 1e.

A relief valve 2 having a valve seat 1-2a is provided in the primary chamber lb so as to be biased toward the valve seat IC by a valve spring 3. The relief valve 2 has a relief passage 2b along the shaft.
is provided so that the fluid in the secondary chamber ld can be led to the outside through the outlet 5a of the bottom cassop 5. In addition, 4 is a base plate that supports the valve spring 3.
4a is a packing that seals the gap between the spacer 4 and the relief valve 2, and 4b is a spring that suppresses the pasokin 4a.

A pressure regulating chamber 1f formed in the upper part of the valve zero body 1 is closed by a diaphragm 6, and a gas pressure inlet 1 facing the outside is closed by a diaphragm 6.
It is only familiar with g. Further, a pressure chamber 7a is formed between the diaphragm 6 and the upper M7, and a liquid delivery conduit 9 is supported and fixed between the upper lid 7 and a thermostatic cylinder 8 that communicates with the pressure chamber 7a via a thin tube 8a. . An adsorbent 8b such as activated carbon is housed in the thermal cylinder 8, and a thermal fluid is also sealed therein, and pressure is applied to the outer surface of the diaphragm 6 according to the temperature of the delivery conduit 9. It looks like this.

The movement of the diaphragm 6 is transmitted to the stem 1o by the actuating spring IOa via the abutment 10b that is press-fitted to the lower surface of the diaphragm 6. The stem 10 is configured to pass through the valve seat 1c and have its tip contact the valve seat 2a and close the relief passage 2b, so that when the diaphragm 6 moves downward υJ, the relief passage 2b is closed. closed,
Then, the relief valve 2 is pushed downward and the valve seat 2a is separated from the valve seat 1c. Conversely, if the temperature in the delivery conduit 9 decreases, or if the pressure from the gas inlet 1g increases, all the valves operate in the opposite manner as described above.

Note that 10c is a spring receiver for the operating spring lOa, and 11 is an operating point adjusting screw.

The temperature-sensitive medium sealed in the temperature-sensitive cylinder 8 in such a gas pressure regulating valve of the present invention is preferably selected as appropriate depending on the characteristics of the gas to be controlled whose pressure is to be adjusted. In other words, when trying to adjust the carbon dioxide content in the beverage by supplying carbon dioxide gas into a container for a carbonated beverage such as beer, and adjusting the foaming of the beverage to the most favorable state, it is necessary to supply carbon dioxide gas that provides the optimal foaming state. The relationship between gas pressure and temperature may be determined in advance, and a thermal medium capable of reproducing such a relationship may be sealed. To achieve such temperature and pressure characteristics,
As the temperature-sensitive medium to be enclosed in the temperature-sensitive chamber, it is preferable to appropriately select the types and amounts of the adsorbent and the thermal fluid.

FIG. 3 shows a system configuration when the temperature-sensitive gas pressure regulating valve of the present invention is used to regulate the carbon dioxide pressure in a container for carbonated beverages such as beer. The gas outlet 1a may be attached directly to the outlet of the pressure reducing valve B, and the gas outlet 1e may be connected by a conduit to the gas inlet of the carbonated beverage container E. Further, carbonated beverage delivery pipes are connected from the carbonated beverage container E to the delivery conduit 9 of the valve D, and from the delivery pipe 9 to the cooler G, so that the carbonated beverage passes from the container E through the delivery pipe 9 of the valve D. Cooler G
so that it can be sent to Furthermore, a three-way switching valve K is connected to the gas pressure inlet 1g of the valve D via the duct ■, and the gas pressure led from the gas outlet 1e to the valve K via the conduit J and the atmospheric pressure are controlled. is constructed so that one side communicates with the gas inlet 1g.

Here, it is preferable to link the pouring cock H and the valve K so that the gas inlet 1g of the valve D is opened to atmospheric pressure during pouring.

In the gas pressure adjustment system configured in this way,
The carbon dioxide content of the carbonated beverage sent out from the container E will be within a preferable range corresponding to its temperature, and since the pressure inside the container will be temporarily increased during pouring, the flow rate will not decrease. It can be prevented.

〔Effect of the invention〕

The temperature-sensitive gas pressure regulating valve of the present invention always adjusts the dissolved gas content in the liquid in the container to an optimal range in accordance with the liquid temperature, and increases the pressure in the container when sending out the liquid, so the delivery flow rate is reduced. There are no restrictions. Furthermore, even if there is adiabatic expansion of the gas when it passes through the pressure reducing valve, the temperature drop caused by this does not affect the operating state of the valve at all.

[Brief explanation of drawings]

Figures 1 and 2 are diagrams showing the structure of an example of the temperature-sensitive gas pressure regulating valve of the present invention, and Figure 3 is a diagram showing the structure of an example of the temperature-sensitive gas pressure regulating valve of the present invention. FIG. 4 is a structural diagram of a conventional pressure regulating valve. FIG. 5 is a structural diagram of a pressure regulating system using a conventional pressure regulating valve. ■...Valve body, 1a...Gas inlet, lc...Valve seat, 1e...Gas outlet, 1g...Gas pressure large port, 2.
...Relief valve, 6...Diaphragm, 8...Temperature sensing cylinder,
9...Liquid delivery conduit, 10...Stem, A...
Gas pressure vessel, B...first pressure reducing valve, D...temperature sensitive pressure regulating valve, E...beverage tank, G...cooler, H.
... Pour-out conc., I, J... Conduit, K... Three-way switching valve. Figure Figure

Claims (1)

[Claims] A gas pressure reducing valve provided between the primary side and the secondary side and a gas relief valve provided between the secondary side and the outside are operated by a single diaphragm and connected to the secondary side. The automatic valve is for adjusting the pressure of gas necessary to maintain the amount of dissolved gas in the liquid in the container within a predetermined range, the automatic valve having the temperature sensing part communicating with the pressure chamber on the outer surface side of the diaphragm. A delivery conduit through which the liquid can flow is provided adjacently, and a gas introduction path through which the pressure of the dissolved gas can be introduced into the pressure regulating chamber on the inner surface side of the diaphragm is provided to prevent an increase in the temperature of the liquid or the pressure of the dissolved gas. A temperature-sensitive gas pressure regulating valve characterized in that a gas pressure reducing valve opens when the temperature decreases, and a gas relief valve opens when the temperature of the liquid decreases or the pressure of the dissolved gas increases.