JPH0314980A - Carbon dioxide gas control valve for carbon ated drink - Google Patents

Abstract

PURPOSE:To make compatible securing of required minimum pressure to let out carbon ated drink well and controlling of appropriate gas pressure in response to the tempera ture of the drink by controlling a valve body to open or close according to the output of a sensor part when the temperature in a drink tank is at a specified temperature or more while by securing a specified flow pressure when the temp. is at the specified level or less. CONSTITUTION:There is provided main valve body 20a to open or close a flow passage 12a of carbon dioxide gas to be communicated with a carbon dioxide gas supply part at its inlet side while with a drink tank at its outlet side. There is also provided a means for opening or closing this body 20a so that it has a specified flow out pres sure when the temp. in the drink tank is at a specified level or less, and a means for opening or closing the body 20a according to the output of a sensor part 41 when the temperature is at the specified level or more. With this arrangement, the opening of the body 20a is controlled by the output from the sensor part 41 in response to the temperature in the tank so that pressure of carbon dioxide is applied properly at all times to carbonated drink. The opening is also controlled to secxure a required minimum pressure when the temperature becomes a low level below the required minimum pressure.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) This invention is a method for automatically adjusting the pressure of carbon dioxide gas in a draft beer barrel used in a beverage tank, such as a beer hall or a restaurant, to an appropriate pressure. The present invention relates to a carbon dioxide gas pressure regulating valve for carbonated beverages that adjusts the gas content of beer or carbonated beverages to a constant level.

(Prior Art) By constantly applying appropriate pressure to carbonated drinks, such as draft beer, separation of carbon dioxide gas is suppressed and the flavor and taste are maintained well. That is, if the pressure of the carbon dioxide gas supplied from the carbon dioxide gas cylinder is too low, carbon dioxide gas will separate from the beer, resulting in excessive foaming when pouring out the beer, which often overflows from the mug.

Also, because the carbon dioxide gas is separated, the refreshing taste is lost. On the other hand, if the pressure of carbon dioxide gas is too high, a large amount of carbon dioxide gas will dissolve into the beer, resulting in too much foaming when poured out, resulting in a pungent, pungent taste.

Therefore, a pressure regulating valve is required to adjust the pressure of carbon dioxide gas to an appropriate value. Moreover, since the required pressure of carbon dioxide gas changes depending on temperature changes, a device that can handle this change is required.

However, conventionally, such carbon dioxide gas pressure regulating valves include manual pressure regulating valves. However, with this manual pressure regulating valve, the user must monitor temperature changes in the beverage tank and manually adjust the set pressure each time.
It is extremely troublesome.

Therefore, an automatic pressure regulating valve as shown in Japanese Patent Laid-Open No. 63-44494 has been proposed. FIG. 4 shows the structure of the conventional automatic pressure regulating valve.

To briefly explain the structure of this automatic pressure regulating valve, a is a casing that serves as the valve body.

The casing a is provided with an inlet b connected to a carbon dioxide gas cylinder (not shown) at the bottom and an outlet C connected to the beverage tank k at the side, forming a gas flow path within the casing a. Further, a diaphragm e is stretched in the center of the interior of the casing a so as to define a gas flow path.

An intake valve port d is provided at the back of the flow path of the inlet port b, and a valve rod f is provided between the intake valve port d and the diaphragm e, and the intake valve is connected to the movement of the diaphragm e. The degree of opening of the valve port d can be adjusted.

In the opposite direction of the diaphragm e, a presser plate l connected to the diaphragm e and a presser plate j on the opposite side are provided, and between them there is provided a donut-shaped plate which has been previously deformed into a certain degree of curvature in one direction. A plurality of bimetal plates h are stacked and interposed so that the directions of their curvature alternate.

The bimetal plate h is urged upward by a spring g, and the displacement of the diaphragm e due to the balance between the deformation force of the bimetal plate h and the elastic force of the spring g, that is, the displacement of the valve rod f linked to the diaphragm e. This allows the opening degree of the intake valve port d to be adjusted and the pressure of carbon dioxide gas supplied to the beverage tank k to be controlled.

Specifically, the temperature within the beverage tank k is transmitted to the bimetallic plate h through the casing a, causing the bimetallic plate h to expand or shorten. This displacement is then transmitted to the valve rod f to adjust the opening degree of the intake valve port d.

(Problem to be Solved by the Invention) According to this automatic pressure regulating valve, when the temperature rises, the opening degree of the intake valve port d increases to correct the set pressure to the high pressure side, and when the temperature falls, the opening of the intake valve port d increases. The degree of opening of the spout d is reduced to correct the set pressure to a lower pressure side, but if this is done alone, a problem arises in that the minimum required pressure necessary to properly pour out the carbonated beverage from the beverage tank k cannot be maintained. That is, when pouring beer out of a draft beer barrel, it is necessary to supply carbon dioxide gas pressure from a carbon dioxide gas cylinder into the barrel to push out the required amount of beer.

In other words, when operating a restaurant, etc., it is said that business will be hindered unless a certain amount of beer can be dispensed per unit time, so the flow rate of beer dispensed from the dispenser must be kept above a certain value. To ensure this, the pressure applied to the draft beer barrel during pouring must be maintained at a certain level or higher. Specifically, in a draft beer barrel, approximately RL. 7k
It is known that gf/cj G J is the minimum required pressure, and if it is less than that, the flow rate of beer poured out from the draft beer barrel becomes too slow, which is said to cause a problem in business.

However, in the pressure regulating valve described above, which simply adjusts the valve opening according to the temperature inside the beverage tank k, the fifth
As shown in the figure, the pressure of carbon dioxide gas changes depending on the temperature change in the entire area, so when the temperature inside the beverage tank is 17℃ or less, the minimum required pressure (1.7k
g f /cdG).

This invention was made with attention to these circumstances,
The aim is to create a carbon dioxide solution that can achieve both the control of the carbon dioxide gas pressure necessary to pour out carbonated drinks well, and the control of the appropriate carbon dioxide gas pressure according to the temperature of the carbonated drink. An object of the present invention is to provide a carbon dioxide gas pressure regulating valve for beverages.

[Structure of the Invention] (Means for Solving the Problems) In order to achieve the above object, the carbon dioxide gas pressure regulating valve of the present invention includes a sensor section that senses the temperature inside a beverage tank containing carbonated beverages, and an inlet side A carbon dioxide gas flow path connected to the carbon dioxide gas supply section and connected to the beverage tank at its outlet side; a valve body provided in the carbon dioxide gas flow path to open and close the flow path; It is constructed by providing means for controlling opening and closing so that a predetermined outflow pressure is achieved when the temperature is below, and means for controlling opening and closing of the valve body in accordance with the output of the sensor section when the temperature inside the beverage tank is above the above-mentioned certain temperature.

(Function) According to the carbon dioxide gas pressure regulating valve of the present invention, the opening degree of the valve body is adjusted based on the output from the sensor section according to the temperature in the beverage tank so that the appropriate pressure of carbon dioxide gas is always applied to the carbonated beverage. controlled. Further, when the temperature drops below the minimum required pressure, the opening degree of the valve body is controlled to maintain the minimum required pressure lif. In other words, it is possible to adjust the pressure of a beverage tank containing a carbonated beverage while satisfying the minimum required pressure conditions.

(Example) The present invention will be described below based on an example shown in FIGS. 1 to 3.

Figure 3 shows a draft beer pouring device. 1 is a pedestal for installing a draft beer barrel, 2 is a draft beer barrel with draft beer installed inside the pedestal 1 (equivalent to a beverage tank), 3 is a carbon dioxide gas cylinder (equivalent to a carbon dioxide gas supply section), and 4 is the carbon dioxide gas cylinder. A pressure reducing valve 5 connected to the gas outlet of the gas cylinder 3 is a server for pouring draft beer into a mug 6. Further, 7 is an automatic carbon dioxide gas pressure regulating valve (hereinafter simply referred to as a pressure regulating valve) installed in the center of the pedestal 1. and between the pressure reducing valve 4 and the pressure regulating valve 7, between the pressure regulating valve 7 and the gas inlet body 8a connected to the draft beer barrel 2, and between the limb outlet body 8b connected to the draft beer barrel 2 and the server 5. They are connected by a conduit 9, and the carbon dioxide gas in the carbon dioxide gas cylinder 3 can be sent into the draft beer barrel 2 and pushed out to the draft beer server 5 in the draft beer barrel 2.

FIG. 1 shows the pressure regulating valve 7 of this pouring device.

The pressure regulating valve 7, which is the main part, includes a valve main body 10 that controls carbon dioxide flowing in and out, and a drive unit 11 that drives the valve main body 10.
It is purchased from.

To explain the valve main body portion 10, 12 is a body.

The body 12 is provided with an inlet 13 connected to the carbon dioxide gas cylinder 3 and an outlet 14 connected to the gas inlet body 8a on the side, and a gas flow path 12a (corresponding to a carbon dioxide gas flow path) is formed in the body 12. has been done. Further, a diaphragm chamber 15 is formed at the center of the upper surface of the body 12, and a housing hole 16 for a main valve seat body is formed at the center of the shaft.

The end of the outflow port 14 is open on the circumferential surface of the accommodation hole 16, and the end of the inflow port 13 is open on the bottom surface.

A main valve seat body 17 is fixed within the accommodation hole 16 by screwing. The main valve seat body 17 is provided with a valve stem hole 18 that penetrates in the axial direction, and a through hole 19 that allows the valve stem hole 18 and the outlet 14 to communicate with each other. In addition, the main valve seat body 1
A conical main valve seat 17a is formed at the lower end of the valve 7. Note that the valve stem hole 18 is formed so that the diameter on the inflow port 13 side is larger than the diameter on the diaphragm chamber 15 side with the through hole 19 as a boundary.

The valve stem 20, which is slidably inserted into the valve stem hole 18, has a conical main valve body 20a at the end protruding toward the inlet 13.
A hemispherical relief valve body 20b is formed at the end protruding toward the 1-diaphragm chamber 15 side.

In other words, by sliding the valve stem 20, the main valve seat hole 2
1 is opened and closed, and the carbon dioxide gas flowing through the inlet 13, the main valve seat hole 21, the valve gap 22 between the valve stem 20 and the valve stem hole 18, and the outlet 14 can be controlled.

Note that 23 is a return valve spring that urges the valve stem 20 in the closing direction, and 24 is a bottom plug that supports the valve spring 23 and blinds the machined hole. Further, the outlet 14 is provided with a through hole 25 for guiding the pressure on the outlet side to the diaphragm chamber 15.

On the other hand, the drive unit 11 includes a first drive unit 11a that drives the valve body 10 regardless of the temperature inside the draft beer barrel 2, and a second drive unit 11a that transmits a force generated depending on the temperature inside the draft beer barrel 2 to the first drive unit 11a. It is composed of two drive parts 1lb.

First, to explain the first driving part 11a, 26 is a cylindrical spring case fixed to the upper surface of the body 12 by bolts, and 27 is a cylindrical spring case sandwiched between the lower surface of the spring case 26 and the upper surface of the body 12. It is a plate-shaped diaphragm.

28 is a diaphragm seat, and 29 is a relief valve seat body.

This knob-shaped relief valve seat body 29 passes through the center of the plate surface of the diaphragm 27 and is connected to the diaphragm seat 28 by screwing. Further, an arc-shaped relief valve seat 29a is formed at the center of the lower surface of the two relief valve seat bodies, that is, at a portion facing the relief valve body 20b. Further, a relief valve seat hole 30 is formed in the center of the two relief valve seat bodies to communicate the diaphragm chamber 15 and the inside of the spring case 26.

In other words, if the diaphragm 27 is displaced upward, the main valve body 20a will be displaced in a direction approaching the main valve seat 17a, and if the diaphragm 27 is displaced downward, the main valve body 20a will be displaced in a direction that approaches the main valve seat 17a. The valve body 20a is the main valve seat 17. It is adapted to be displaced in a direction away from a.

Furthermore, when carbon dioxide gas with an unnecessarily high pressure is sealed in the diaphragm chamber 15, the pressure is released and the valve seat hole 30, the inside of the spring case 26, and the spring case 26 are sealed.
It is possible to escape to the outside through a bleed hole 31 provided in the peripheral wall of.

An adjustment screw 32 is screwed into the upper end opening of the spring case 26 so that it can move forward and backward. This adjustment screw 32 consists of an upper lid part 32a provided with a through hole 33 in the center and a cylindrical part 32b formed with a threaded part on the outer periphery.
It is composed of. Note that 34 is a set screw for fixing the adjustment screw 32.

A spring seat 35 is disposed below the adjustment screw 32 so as to be able to come into contact with and separate from the adjustment screw 32. Furthermore, this spring seat 35 is urged upward by an adjustment spring 36 interposed between it and the diaphragm seat 28.

By moving the adjustment screw 32 forward and backward, the adjustment spring 36 is expanded and contracted, and the displacement of the diaphragm 27, that is, the degree of opening of the main valve body 20a can be adjusted.

That is, the amount of displacement of the diaphragm 27 changes depending on the balance between the gas pressure in the diaphragm chamber 15 and the elastic force of the adjustment spring 36.

Utilizing this characteristic, by operating the adjustment screw 32, r 1 . 7 kg f/cd
If the adjustment spring 36 is compressed so as to exert an elastic force that counteracts the minimum required pressure shown by GJ, the pressure on the outflow side of the pressure regulating valve 7 becomes rl. 7kgf/cd G
or more, for example, when the gas pressure below the diaphragm 27 is
6 and pushes the diaphragm 27 upward. In other words, the valve rod 20 is pushed up in the direction of closing the main valve seat hole 21, and the pressure on the production side is lowered.

Conversely, the outlet pressure is r 1 . 7 kg f/
cl! G or less", for example r 1 . 5 kg f
/ cd G J, the gas pressure below the diaphragm 27 is overcome by the elastic force of the adjustment spring 36 and pushes the diaphragm 27 downward. In other words,
The valve stem 20 is pushed down in the direction of opening the main valve seat hole 21,
The pressure on the outflow side is increased.

Next, the second drive unit 1lb will be described. Reference numeral 37 is a heat insulating case that is screwed into the outer periphery of the upper end of the spring case 26 so that it can move forward and backward. The heat insulating case 37 is made of a material with low thermal conductivity, and suppresses heat transfer from the second drive section 1lb to the first drive section 11a. Note that 38 is a set screw for fixing the heat insulating case 37.

Three are bellows cases, which are connected to the heat insulating case 37 at the upper threaded portion and to the cap 41 at the lower threaded portion. Note that 40 and 42 are set screws for fixing the bellows case 39 and the cap 41.

The cap 41 is made of a highly thermally conductive material, and by setting its top surface so as to touch the bottom surface of the draft beer barrel 2, the temperature inside the draft beer barrel 2 can be sensed (sensor section).

An inverted concave bellows chamber 43 is provided below the cap 41. This bellows chamber 43 has a top surface with a cap 4.
1. The outer peripheral surface is composed of three bellows cases, the inner peripheral surface is a bellows-shaped cylindrical member 44, the disc-shaped bottom is a disc-shaped temporary member 45, and the donut-shaped bottom is a donut-shaped bellows member 46, and seals off substances such as alcohol. It has a built-in structure.

In order to prevent alcohol from leaking from the bellows chamber 43, the disc-shaped plate member 45 is welded to the inner peripheral edge of the bellows-shaped cylindrical member 44, and the donut-shaped plate member 46 is connected to the inner peripheral surface of the bellows case 39 and the bellows-shaped cylindrical member 44. An O-ring 47 is welded to the inner peripheral edge of the bottom surface of the cylindrical member 44 and interposed between the cap 41 and the bellows case 39 . Note that 48 is a sealing screw for sealing alcohol.

In other words, the alcohol in the bellows chamber 43 is absorbed by the cap 41.
When the disc-shaped plate member 45 expands in response to the heat inside the draft beer barrel 2 transmitted through the draft beer barrel 2, the disc-shaped plate member 45 can be displaced in a direction away from the cap 41, that is, toward the adjustment screw 32 side.

4 is a thrust bearing, 50 is a spindle, and 51 is a top spring. The spindle 50 is disposed so as to pass through the through hole 33 of the adjustment screw 32 in the axial direction and to be able to come into contact with and separate from the spring seat 35 located further below. Further, the four thrust bearings are interposed between a pedestal 45a formed at the lower end of the disc-shaped plate member 45 and a flange portion 50a formed at the upper end of the spindle 50.

In other words, when the heat insulating case 37 is screwed into the spring case 26 so that it can move forward and backward, the spindle 50 that comes into contact with and separates from the spring seat 35 is prevented from being twisted.

The flange portion 50a is biased by a top spring 51 interposed between the top cover portion 32a of the adjustment screw 32 facing the flange portion 50a, and is pressed by four thrust bearings. That is, the spindle 50 is connected to the bellows chamber 43 by the top spring 51.

In other words, when the alcohol expands, the adjustment spring 36 is compressed via the disc-shaped plate member 45 of the bellows chamber 43 and the spindle 50, and conversely, when the alcohol contracts, the adjustment spring 36 is compressed via the disc-shaped temporary member 45 and the spindle 50. The spring 36 is expanded.

Next, the effect will be explained.

Carbon dioxide gas discharged from the carbon dioxide gas cylinder 3 flows into the inlet 13 of the pressure regulating valve 7 through the pressure reducing valve 4 and the conduit 9. Then, this carbon dioxide gas is heated in advance to the minimum required pressure (1.
7kg f /cjG) by the compression force of the adjustment spring 36. The main valve seat hole 21, which has been lowered and opened, passes through the valve stem gap 22, and the through hole 19 in order, and then the outflow port 1 is opened.
It flows to 4. Then, the carbon dioxide gas flowing out from this outlet 14 is supplied into the draft beer barrel 2 from the gas inlet body 8a. In addition, some of the carbon dioxide gas that has reached the outlet 14 is
The force is guided into the diaphragm chamber 15 through the conduction hole 25 and becomes a force that displaces the diaphragm 27.

Here, when the temperature inside the draft beer barrel 2 reaches "17 degrees Celsius or higher", for example, "30 degrees Celsius", the alcohol sealed inside the bellows chamber 43 expands due to the heat inside the draft beer barrel 2 transferred from the cap 41. I will do it. Then, bellows chamber 43
A force is generated to push down the disc-shaped plate member 45, and the spindle 5o, which is biased by the top spring 51, is pushed down. Then, the tip of the spindle 50 comes into contact with the spring seat 35, and the spring seat 3
Press 5. As a result, a spring load corresponding to a predetermined pressure commensurate with the temperature inside the draft beer barrel 2 is generated. Specifically, r 3 as shown in FIG.
kg f,/d. G produces a spring load corresponding to a pressure of J.

This load is applied to the valve stem 20 via the diaphragm 27.
The main valve body 20a is pushed down, and the main valve seat hole 21 is opened by an amount corresponding to the temperature. As a result, the carbon dioxide pressure within the draft beer barrel 2 is regulated in accordance with temperature changes. Of course, when the pressure of the carbon dioxide gas flowing out from the main valve seat hole 21 approaches r 3 kg f /cdGJ, the pressure on the outflow side led to the diaphragm chamber 15 increases
As the main valve seat hole 21 is pushed up, the main valve body 20 is raised.
It closes at a (predetermined pressure is maintained).

In addition, if the temperature inside the draft beer barrel 2 is "17 degrees Celsius or lower" (temperature corresponding to the minimum required pressure value), for example "10 degrees Celsius" (conventional automatic pressure: A valve control is "1.Okg f/cd").
When the temperature reaches a temperature corresponding to GJ), the alcohol sealed in the beer barrel 43 contracts due to the heat inside the draft beer barrel 2 transferred from the cap 41. Then, a force is generated that pulls up the disk-shaped plate member 45 of the bellows chamber 43, and the spindle 50, which is biased by the top spring 51, is pulled up. Here, the adjustment spring 36 is set in advance by the adjustment screw 32 to a pressure (1.7 kgf/cd G
) to. #ffi, the tip of the spindle 50 moves away from the spring seat 35.

At this time, looking at the relationship between the pressure above and below the diaphragm 27, the pressure on the outflow side led to the bottom of the diaphragm 27 is defeated by the elastic force of the adjustment spring 36. That is, the diaphragm 27 is pushed downward, and the main valve seat hole 21 opens more widely due to the main valve body 20a descending. As a result, the pressure of carbon dioxide gas flowing out from the outlet 14 increases. Then, the pressure on the outflow side is r 1
．． As it approaches 7kg f/cdGJ,
The diaphragm 27 is pushed upward, and the main valve seat hole 21 is closed by the rising main valve body 20a.

However, if the temperature inside the draft beer barrel 2 is "below 17°C", the pressure inside the barrel 2 will be r1 regardless of the temperature inside the barrel 2.
．． It is controlled so that it becomes 7 kg f / cd G J. If this is expressed in a characteristic diagram showing the relationship between pressure and temperature, it will be as shown in Fig. 2.

Therefore, the minimum required pressure required for good pouring of draft beer (1.7 kg f/c+&g)
The pressure applied to the draft beer can be adjusted to the optimum pressure depending on the temperature.

Furthermore, a relief valve seat hole 30 passing through the center of the diaphragm 27 is provided, and the pressure inside the diaphragm chamber 15 is released from the valve seat hole 30 to the outside.
There is also the advantage that the excess pressure sealed inside the diaphragm chamber 15 can be lowered to a predetermined pressure.

In other words, when draft beer is not consumed, the main valve body 2
0a is always in a closed state, so when the temperature inside the draft beer barrel 2 drops (for example, from 30°C to 20°C), a pressure corresponding to "30°C" (3 kgf/ cd G) may become sealed.

However, looking at the relationship between the pressure above and below the diaphragm 27 at this time, the pressure below the diaphragm 27 is r
3 kg f / ci G J, and the pressure above the diaphragm 27, that is, the elastic force of the adjustment spring 36, is equivalent to r 2 kg f / cd G J. Therefore, the diaphragm 27 is pushed upward, the relief valve body 20b and the relief valve seat 29a are separated, and the relief valve seat hole 30 is opened. Then, the excess pressure sealed after the outlet 14 and inside the diaphragm chamber 15 is released to the atmosphere through the relief valve seat hole 30, the inside of the spring case 26, and the bleed hole 31, which prevents the pressure from becoming higher than necessary. This will prevent the phenomenon.

Furthermore, since the adjustment screw 32 and the spring case 26, and the insulation case 37 and the spring case 26 are structured so that they can be screwed back and forth freely, there is an advantage that even if the required value of the minimum required pressure varies slightly, it can be easily accommodated. be. That is, the compression degree of the adjustment spring 36 is adjusted by changing the degree of screw engagement between the adjustment screw 32 and the spring case 26, and the degree of screw engagement between the heat insulation case 37 and the spring case 26 is also changed to ensure that the tip of the spindle 50 and the spring By adjusting the distance to the seat 35, the desired minimum required pressure can be controlled.

Furthermore, since an external pressure type bellows is used in the structure of the second drive section, there is an advantage that characteristics different from those shown in FIG. 2 can be easily obtained. That is, the amount of alcohol sealed in the bellows chamber is adjusted by changing the distance between the disc-shaped plate member 45 of the bellows chamber 43 and the cap 41, and the degree of spiraling between the heat insulating case 37 and the spring case 26 is also changed to control the spindle. By adjusting the distance between the tip of spring seat 50 and spring seat 35, different characteristics can be obtained.

In addition, in one embodiment, draft beer was taken as an example, but of course,
Similar effects can be achieved with other carbonated drinks.

In addition, in one embodiment, an external pressure type bellows is used in the drive part,
Although the valve body is controlled to open and close according to the temperature, the present invention is not limited to this, and the valve body may be controlled using other structures such as an internal pressure type bellows, a shape memory member, or a bimetal member.

Furthermore, in one embodiment, the outer circumferential wall material of the bellows chamber and its lower circumferential wall material were constructed of different materials so that human heat from the beverage tank was effectively transmitted to the liquid in the bellows chamber, but this is not limited to this. First, other structures may be used, for example, the outer circumferential wall of the bellows chamber and its lower circumferential wall may be made of the same material.

Further, in one embodiment, alcohol is used as the sealing liquid in the bellows chamber, but the present invention is not limited to this, and other liquids such as ether may be used as the sealing liquid.

In addition, in one embodiment, a combination of an adjustment screw and an adjustment spring was used to control the valve body to a predetermined outflow pressure (minimum required pressure) when the temperature is below a certain level, but this is not limited to this. It may also be controlled using a means.

[Effects of the Invention] As explained above, according to the present invention, it is possible to both secure the minimum necessary pressure necessary to pour out carbonated drinks well and to control gas pressure appropriately according to the temperature of carbonated drinks. It is possible to achieve both.

Therefore, the optimum carbon dioxide gas can be supplied to carbonated drinks without hindrance to business operations.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention.
The figure is a sectional view showing the carbon dioxide gas pressure regulating valve of the present invention, FIG. 2 is a line diagram showing the characteristics of the carbon dioxide gas pressure regulating valve, and FIG. 3 is a diagram showing a draft beer pouring device to which the carbon dioxide gas pressure regulating valve is applied.
FIG. 4 is a sectional view showing a conventional automatic pressure regulating valve, and FIG. 5 is a diagram showing the characteristics of the automatic pressure regulating valve. 2... Draft beer barrel (beverage tank), 3... Carbon dioxide gas cylinder (carbon dioxide gas supply section), 7... Carbon dioxide gas pressure regulating valve,
10...Valve main body part, 12...Body 12a...
Gas flow path (carbon dioxide flow path) 13... gas inlet,
14... Gas outlet, 17... Main valve seat body, 17a.
...Main valve seat, 20...Valve stem, 20a...Main valve body, 2
5... Conduction hole, 26... Spring case, 27.
...Diaphragm, 32...Adjustment screw
36... Adjustment spring, 41... Cap (sensor part), 43... Bellows chamber, 50... Spindle, 51... Top spring.

Claims (1)

[Claims] a sensor unit that senses the temperature inside a beverage tank containing a carbonated beverage; a carbon dioxide flow path whose inlet side is connected to the carbon dioxide gas supply unit and whose outlet side is connected to the beverage tank; a valve body that opens and closes a flow path; a means for controlling the valve body to open and close so that a predetermined outflow pressure is achieved when the temperature inside the beverage tank is below a certain temperature; 1. A carbon dioxide gas pressure regulating valve for carbonated beverages, comprising means for controlling opening and closing of said valve body in accordance with an output of said sensor section.