JPS6264791A - Method and device for adjusting pressure in bubbling dring vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Industrial Application) The present invention relates to a method for adjusting the pressure in a container of a sparkling beverage such as beer when supplying carbon dioxide gas into the container and dispensing the sparkling beverage. This is related to the device.

(Prior art) Devices (hereinafter referred to as draft beer dispensing machines) have been widely used for producing sparkling beverages, such as draft beer, by connecting a carbon dioxide gas phone to a container and dispensing 3 liters of draft beer each time the container is pressurized. Ta.

Here, an example of a conventional draft beer pouring machine will be described with reference to FIG. One end of a pouring pipe 3 disposed in the cooling water 2 inside the main body 1 is connected to a pouring cock 4, and the other end is connected to a beer conduit 5 outside the main body 1. Draft beer barrel 6 which is a liquid storage pressure vessel
A pouring head 8 is attached to the take-out lower part of the brewer, and a beer flow path 10 that moves downward by a handle 9 is attached to the pouring head 8, and a siphon tube is attached to the tip of the beer flow path 10. II is connected. A gas flow path 12 formed as a convex portion of the pouring head 8 is connected from an inlet pipe 13 to a carbon dioxide gas cylinder 16 via an on-off valve 14 and a pressure reducing valve 15. The beer conduit 5 is connected to a joint 17 attached to the negative end of the beer flow path 10, and the cooling water 2 is cooled by a freezing mechanism 18.

To dispense draft beer using this draft beer dispensing machine, first operate the handle 9 as shown in the figure, and
and the siphon pipe 1) connected to it are placed in the lower position, and when the on-off valve 14 of 16 is opened to the carbon dioxide gas pump, the pressure reducing valve 15 is opened.
The carbon dioxide gas, which has been reduced to an appropriate pressure, passes from the introduction pipe 13 to the gas flow path 121ffi and pressurizes the produced N9 in the draft beer barrel 6. Therefore, note III: When placing a container 20 such as a jug under the tap 4 and opening the pouring cock 4,
Draft beer 19 is passed from the siphon pipe 1) to beer lL path 1o.
While flowing through the beer conduit 5 and the pouring pipe 3, it is rapidly cooled and poured from the pouring cock 4 into the container 20.

By the way, in the conventional raw heel dispensing machine of this type, the pressure inside the container by the pressure reducing valve 15 is controlled to be a preset constant pressure in view of the function of the pressure reducing valve 15 used. This set pressure determines the carbon dioxide content of the beer, which is important for the delicious taste of heel, so it must be kept within the specified range. For example, if the set pressure is too low and the pressure inside the container drops too much, the resulting heel will be so-called bland and not tasty. On the other hand, if the set pressure is too high and the pressure inside the container is compromised, too much foam will form in the poured beer, making it difficult to handle.
It also doesn't taste good. In this way, keeping the pressure inside the container within a predetermined pressure range is important for enjoying beer deliciously.
□1) "1)1°"1'""1)2:
Therefore, the carbon dioxide content in beer is determined by two factors: the temperature of the beer and the pressure inside the container, so the carbon dioxide content in beer may not be constant even if only the pressure inside the container is constant. . Therefore, in order to keep the carbon dioxide content in beer constant, the pressure inside the container must be changed depending on the temperature of the beer. The temperature of the beer will change as it ages, so while measuring the temperature of the beer,
Setting pressure 4 Pressure reducing valve 15'' operation 1.7
Variable loan: <6°”+291#tt operation”
'Must W'! It is virtually impossible to perform this operation in 1 to 9 cases.

Although it would be possible to enjoy more delicious beer if the pressure inside the container was controlled according to the beer temperature, sufficient pressure control has not been achieved in the past due to the complexity of the operation.

=5= The present invention was made to solve the above-mentioned problems, and provides economical means for controlling the pressure inside the container so that the carbon dioxide content is maintained at a predetermined value with respect to the beer temperature. The purpose is to

(Means for Solving the Problems) In order to solve the above problems, the present invention provides an apparatus for pouring out a beverage through a pouring pipe by applying carbon dioxide pressure to the beverage in a liquid storage pressure container. Converting the temperature of the beverage into a pressure determined by temperature-pressure characteristics as physical property values of a preselected substance, and using the pressure to push a pressure-responsive member of a pressure control valve connected to the pressure vessel, A method for adjusting the pressure in a foamed beverage container, characterized in that the pressure in the pressure container is adjusted, and the beverage is poured out through a pouring pipe by applying carbon dioxide pressure to the beverage in the liquid storage pressure container. In the apparatus, a temperature-sensitive cylinder is placed in contact with the pressure vessel, and a pressure 6 determined by temperature-pressure characteristics as a physical property value of a filling material sealed in the temperature-sensing cylinder is transmitted to the pressure vessel through a pressure transmission pipe. The pressure is transmitted to the pressure chamber of the pressure control valve connected to the pressure control valve, thereby pushing the pressure responsive part 4 installed adjacent to the pressure chamber of the pressure control valve, and 1) adjusting the pressure in the pressure vessel 1. To propose a pressure regulating device in a container for foaming drinks, which is characterized by the following features.

(Example) The present invention will be described below based on an example of a draft beer pouring machine.

As mentioned above, in order to enjoy draft beer deliciously, it is desirable that the carbon dioxide content in draft beer be approximately constant, but since the theory is based on vague standards of taste, it depends on the type of beer, the taste of the person who tastes it, etc. Depending on the structure of the draft beer dispensing machine, etc., it may not be sufficient if the desired carbon dioxide content is constant relative to the temperature of the draft beer.

However, it is assumed here that the carbon dioxide content is preferably constant.

First, let's consider how the carbon dioxide content in draft beer changes depending on temperature and pressure. Regarding this, the following Henry's law holds approximately.

P = Ex (It where X is the mole fraction of the solute gas in the liquid phase, P is the partial pressure of the solute gas in the gas phase in equilibrium with this liquid (atm), and E is the Henry constant (aim 1 mol) fraction].

Considering draft beer as water, the Henry's constant for the dissolution of carbon dioxide gas in water is as follows with respect to temperature.

(Perry Chemical Engineering
rs'1)andbook"4th ed, (1
963) 0℃ 10℃ 20℃ 30℃
40℃EXIO-'= 0.0728 0.104
0.142 0.186 0.233 According to the above equation (1), it can be seen that the pressure P to keep X constant must be proportional to Henry's constant.

The above numerical values are illustrated in Figure 2, and from this figure, the pressure for the temperature that keeps the carbon dioxide content constant is 2
As shown in the figure, it can be seen that it has a downwardly convex characteristic or an approximately linear characteristic. Also, the pressures P and E must be proportional, and the conventional draft beer storage pressure is 2 kg /
Since it was around cJ G (gauge pressure), the carbon dioxide content was X1. Depending on X2°×3, temperature-pressure characteristics as shown in FIG. 3 are obtained. Is X better? Or is X better?
Whether 21 XI is good depends on your personal preference. In any case, when pouring draft beer with a substantially constant carbon dioxide content to enjoy delicious draft beer, it is necessary to control the pressure inside the container using temperature-pressure characteristics as shown in FIG. The pressure control method is shown in FIG.

FIG. 4 shows a part added to the drawing of the draft beer pouring machine shown in FIG. 1, and the main body 1 in FIG. 1 is omitted because it is common to the drawing. In FIG. 4, the temperature sensing cylinder 31 is closely attached to the outer surface of the draft beer barrel by a mounting band (not shown), and senses the temperature of the draft beer 19. A filling substance is sealed in the temperature-sensitive tube 31, and a pressure P corresponding to the detected temperature T is generated.
T is transmitted through the capillary tube 32 to the pressure control valve 33. The pressure control valve operates so that the beer barrel internal pressure P234 becomes a predetermined value. Its operation will be explained next.

FIG. 5 is a schematic diagram of the structure of the temperature sensing cylinder 31 and the pressure control valve 33. In FIG. 5, the internal pressure PT of the temperature sensitive cylinder 31 is transmitted to the upper chamber 41 of the pressure control valve 33 through the thin tube 32. The diaphragm 42 uses the force PKI of the spring 44 adjusted by the handle 43 and the temperature sensing cylinder pressure P□
is pushed down by the sum of

Further, the diaphragm 4241 is pushed upward by the sum of the pressure P2 inside the pipe 131 and the force PK2 of the spring 45.

When the diaphragm is balanced, the following equation holds.

PT+P□-P2+PK2 (21 above (
2) In the equation, left side > right side, i.e. 1 block +PKI>Pg +PK2
If (3), the valve opens and carbon dioxide gas in the inlet pipe 13 flows into the pipe 1.
3'. Conversely, left side ≦ right side, that is, Pt +
If Px+<Pz 10Pya2 (4), the valve is closed.

Next, a description will be given of how the pressure control valve 33 having the above-mentioned characteristics controls the beer barrel internal pressure P2 based on the temperature-pressure characteristics shown in FIG. 3.

First, the saturated vapor pressure of the filling material sealed in the temperature-sensitive cylinder 31 is
Select a filling material with characteristics close to those shown in Figure 3. As the filling material, what is called a refrigerant is easily available. For example, if a suitable refrigerant is selected, the temperature-pressure characteristics of its saturated vapor pressure will be approximately as shown in FIG.

The refrigerants selected here are i-butane, RC318, n-butane, and R1]4. Comparing Figure 6 and Figure 3, we find that the carbon dioxide content N XI + XZ + ”1 in Figure 3
The characteristics of the four types of refrigerants shown in Figure 6 are quite similar.
Given an arbitrary carbon dioxide content X, select an appropriate refrigerant and apply a constant pressure to the pressure of its temperature-pressure characteristics;
That is, it can be seen that by moving the curve in FIG. 6 upward in parallel, the temperature-pressure characteristics of X can be approximated to the temperature-pressure characteristics of the sum of the refrigerant and a constant pressure with sufficient accuracy for practical use. Next, it will be explained that this can be achieved by using the pressure control valve 33 and the temperature sensing tube described above.

The balance condition for opening and closing the pressure control valve 33 is expressed by the above-mentioned equation 131. If a suitable refrigerant as indicated in 1- is filled in the thermosensitive cylinder 31, the internal pressure P□ of the thermosensitive cylinder will have the characteristics shown in FIG. PK about the force PIII and PK2 due to springs
By setting -P□-P82, the beer barrel pressure pz4 to be controlled in equation (2) can be expressed as follows.

P2-PT 1PK (5) This equation can be illustrated as shown in FIG. 7. P8 is pressure control valve 3
This can be changed by operating the handle 43 of PT I-PK, so the response characteristics to P2 by PT I-PK can be arbitrarily selected to some extent.

In the above explanation, the characteristics of P2 have been derived as a condition that the G:1 carbon dioxide content is constant, but apart from this condition, as a condition for enjoying delicious beer, we can also set an arbitrary P2.
Even if the characteristics of 2 are determined, they can be approximated in the same way by selecting an appropriate refrigerant.

By the way, in the following explanation of l-, the beer barrel internal pressure P2
changes in the downward direction, and the pressure control valve 3 changes accordingly.
This was a case where P2 was increased and controlled to a predetermined value by opening valve No. 3. Conversely, when P2 changes in the negative direction, the pressure control valve 33 has the ability to lower it.
has no mechanism. Therefore, in the embodiment shown in FIG. 4, when the beer barrel pressure P2 changes in the direction of -h by the temperature sensing tube 35, the thin tube 36, and the pressure control valve 37,
We are trying to control the pressure to lower it.

The structure of the pressure control valve 37 is similar to the structure of the pressure control valve 33, and in FIG. The primary pressure may be introduced to the lower chamber of 42.

However, - the sinking pressure side shall be connected to the inside of the beer barrel. Since the pressure control valve 37 can be easily realized with only this difference, detailed explanation will be omitted.

As explained above, according to this embodiment, pressure control according to temperature, which was conventionally necessary to enjoy delicious draft beer but could not be performed due to complicated operations, can be automated at low cost. This is an advantage.

In the embodiment shown in FIG. 4, the pressure control for raising and lowering the temperature is performed separately by two valves, the pressure control valve 33 and the pressure control valve 37.
It is also clear that it is possible to realize pressure control valves that are integrated into one set of pressure control valves.

In addition, in FIG. 4, the temperature sensing tube 31 is separated from the pressure control valve 33 by a thin tube 32, but it is also possible to configure the temperature sensing tube and the pressure control valve adjacent to each other, and the absence of the thin tube makes it possible to This provides the advantage of ease of handling. A schematic diagram of this method is shown in FIG. The internal structure of the pressure control valve 33 is not shown because it does not change.

In addition, in the embodiment shown in FIG. 4, a heald was used to press the temperature-sensitive tube 31 onto the outer surface of the beer barrel 6, but as another method of crimping, as shown in FIG. Insert the beer barrel into a flat mounting container 51 for placement, store the temperature sensing cylinder 31 on the bottom of the mounting container 51, and use a spring (not shown) to press the temperature sensing cylinder and beer barrel 6 together. Make sure to push the thermosensor up. If the pressure control valve 33 is set aside adjacent to the container 51, it will be easier to handle.The temperature-sensitive tube may be placed not only at the bottom but also at the lower side. In this way, even when the beer barrel is replaced, the thermosensor can be easily removed.
This has the advantage that you do not have to perform any additional operations.

Further, in the above embodiment, the draft beer 4 was considered as the sparkling beverage, but it is clear that the same effect can be obtained with other similar sparkling beverages H.

(Effects of the Invention) As explained below, according to the pressure regulating method of the present invention, it is possible to obtain a sparkling beverage dispensing device that allows delicious sparkling beverages to be enjoyed using inexpensive means.

[Brief explanation of drawings]

Figure 1 is a schematic diagram of a conventional draft beer pouring machine, Figure 2 is a graph of Henry's constant number, Figure 3 is a graph of temperature-pressure characteristics to keep the carbon dioxide content constant, and Figure 4 is a graph of the present invention. A schematic diagram showing a part of a draft beer dispensing machine that implements a pressure adjustment method according to Figure 7 shows the formula (
5), FIG. 8 is a schematic diagram of an embodiment of the configuration of a pressure control valve and a temperature-sensitive tube, and FIG. 9 is a schematic diagram of an embodiment of a method for crimping a temperature-sensing tube to a beer barrel. l... Draft beer pouring machine body 6... Beer barrel 1
5... Pressure reducing valve 16... Carbon dioxide gas cylinder 31...
- Temperature sensing tube 32...Thin tube 33...Pressure control valve 42...Diaphragm 5I...Mounting container Fig. 4 Fig. 6 Fig. 7 - A/1) - Fig. 8 Fig. 9 Procedure Amendment (voluntary) 1985 1)
May 51 1. Indication of the case 1985 Patent Application No. 200893 2 Name of the invention Nosobo Inryoyou Kinai Anoryouku Choseihohou Pressure adjustment force method and device for a foamed beverage container (Relationship: Patent applicant telephone (0270) 24-121) No further changes)

Claims (4)

[Claims] (1) In a device that dispenses a beverage through a pouring pipe by applying carbon dioxide pressure to the beverage in a liquid storage pressure container, the temperature of the beverage is determined by temperature-pressure characteristics as physical property values of a pre-selected substance. The foamed beverage container is characterized in that the pressure is converted into a pressure that is controlled by the pressure, and the pressure is used to push a pressure responsive member of a pressure control valve connected to the pressure container, thereby adjusting the pressure within the pressure container. How to adjust the pressure inside. (2) In a device for dispensing a beverage through a pouring pipe by applying carbon dioxide pressure to the beverage in a liquid storage pressure vessel, a temperature-sensitive tube is disposed in contact with the pressure vessel and is sealed in the temperature-sensing tube. The pressure determined by the temperature-pressure characteristics as physical property values of the filling material is transmitted to the pressure chamber of the pressure control valve connected to the pressure vessel via the pressure transmission line, and thereby the pressure chamber of the pressure control valve is 1. A pressure regulating device for a foamed beverage container, characterized in that the pressure within the pressure container is adjusted by pushing a pressure responsive member provided next to the foamed beverage container. (3) The pressure regulating device according to claim 2, wherein the temperature-pressure characteristic as the physical property value is the saturated vapor pressure characteristic of the filling material. (4) The pressure regulating device according to claim 2, wherein the temperature-sensitive tube and the pressure control valve are integrated adjacent to each other, and the pressure transmission pipe line is shortened.