JP2015025675A - Carbon dioxide gas measuring device - Google Patents

Abstract

Disclosed is a carbon dioxide gas measuring device capable of managing the carbonic acid content of a slightly carbonated beverage or jelly containing a very small amount of carbonic acid by weight ratio. A carbon dioxide gas measuring device includes a sample hopper 11, a first cylinder 12, a second cylinder 13, a heating means 12a, a cooling means 13a, a carbon dioxide concentration measuring means 14, and three switching methods. Valves 15a, 15b, 15c, volume measuring means 16, and calculating means 17 are provided. The sample hopper 11 inputs a measurement object (for example, carbonated drink) 11 a into the tip 12 b of the first cylinder 12. The carbonated beverage 11a thrown into the front-end | tip part 12b of the 1st cylinder 12 is heated with the heating means 12a, and the mixed gas containing the carbon dioxide gas which was melt | dissolved is taken out. The extracted mixed gas is moved to the second cylinder 13 and cooled by the cooling means 13 a provided in the second cylinder 13. [Selection] Figure 2

Description

  The present invention relates to an apparatus for easily and reliably measuring the amount of carbon dioxide dissolved in a carbonated beverage or jelly.

In the filling line for carbonated beverages, the amount of carbon dioxide (gas volume) dissolved in a certain amount of beverage is an important quality factor, and this is accurately measured to ensure proper carbon dioxide pressure in the carbon dioxide dissolution tank. Need to control. As a conventional method for measuring the gas content of carbonated water, for example, there is a method as shown in FIG. That is, carbon dioxide gas in the space portion 1B in the filling container 1 by piercing the detection needle 4 of the pressure gauge 3 from the lid 2 portion of the filling container 1 which is a sealed product containing carbonated water during production in the factory. The carbon dioxide gas content of the carbonated water 1A in the filled container 1 is measured by measuring the pressure of. This is because the carbon dioxide content of the carbonated water 1A is indirectly known from the relationship between the volume of the space portion 1B and its pressure. For example, if it is 3.5 kg / cm ² at 20 ° C., it is considered good.

Japanese Patent Laid-Open No. 5-95772

  In such a conventional method for measuring the gas content of carbonated water, the content rate is measured by the pressure of carbon dioxide gas, and as a result, the amount of carbon dioxide gas is managed by the enclosed pressure of carbon dioxide gas.

  However, in the case of fine carbonated beverages or jelly containing a very small amount of carbonic acid, rather than a relatively high enclosed pressure like the above carbonated beverages, it is better to manage the amount of carbon dioxide gas rather than the enclosed pressure by weight ratio. However, it is possible to accurately control the carbon dioxide content.

  Then, this invention makes it a subject to provide the carbon dioxide gas measuring device which can manage the carbonic acid content of the fine carbonated drink and jelly which contained only a small amount of carbonic acid by weight ratio in view of the said problem.

Therefore, the invention described in claim 1 of the present invention is
A carbon dioxide gas measuring device that measures the carbon dioxide content of a measurement object by weight,
A sample hopper, a first cylinder, a second cylinder, a heating means, a cooling means, a carbon dioxide concentration measuring means, three switching valves, a volume measuring means, and a computing means,
The sample hopper is used to load the measurement object.
A first switching valve is arranged between the sample hopper and the first cylinder, and the measurement object is introduced from the sample hopper to the first cylinder in accordance with the switching of the first switching valve. Configured,
The first cylinder is provided with a heating means, and this heating means generates carbon dioxide gas by heating the measurement target object.
A second switching valve is arranged between the first cylinder and the second cylinder, and the carbon dioxide gas is mixed from the first cylinder to the second cylinder according to the switching of the second switching valve. Configured to move gas,
The second cylinder is provided with a cooling means and a volume measuring means, the cooling means cools the mixed gas inside the second cylinder, and the volume measuring means determines the volume of the cooled mixed gas. Means to measure,
A third switching valve is arranged between the second cylinder and the carbon dioxide concentration measuring means, and the carbon dioxide concentration measuring means changes the carbon dioxide gas of the cooled mixed gas according to the switching of the third switching valve. Measuring the concentration,
The computing means is a carbon dioxide gas amount measuring device which is a means for calculating the carbon dioxide gas content by weight ratio from the carbon dioxide gas concentration and volume of the mixed gas.

The invention according to claim 2 of the present invention is
2. The carbon dioxide gas measuring device according to claim 1, wherein the measurement object is heated to 70 ° C. or more by a heating means provided in the first cylinder.

The invention according to claim 3 of the present invention is
The carbon dioxide gas measuring device according to claim 1 or 2, wherein the carbon dioxide gas moved to the second cylinder is cooled to room temperature by the cooling means.

  According to the carbon dioxide gas measuring device of the present invention, it is possible to manage the amount of carbon dioxide in a slightly carbonated beverage or jelly containing a very small amount of carbonic acid by weight ratio, and the carbon dioxide with higher accuracy than conventional enclosed pressure management. The amount of gas can be managed.

The figure which shows the conventional gas content rate measuring method of carbonated water. The figure which shows schematic structure of the carbon dioxide gas measuring device by this invention. The measurement flow figure of the carbon dioxide gas measuring device by the present invention. The figure which shows the state which throws a fixed quantity carbonated drink 11b into the front-end | tip part 12b of the 1st cylinder 12 from the sample hopper 11 which concerns on this invention. The figure which shows the state which heats the input fixed amount carbonated drink 11b with the heating means 12a with which the 1st cylinder 12 was equipped. The figure which shows the state which moves the whole quantity of the generated mixed gas 11c to the 2nd cylinder. The figure which shows the state which measures the volume of the carbon dioxide gas 11d of the cooled 2nd cylinder with the volume measuring means 16, and measures a carbon dioxide gas concentration with the carbon dioxide concentration measuring means 14.

  Hereinafter, an embodiment for carrying out a carbon dioxide gas amount measuring apparatus according to the present invention will be described with reference to the drawings.

  FIG. 2 is a diagram showing a schematic configuration of a carbon dioxide gas measuring device according to the present invention. A carbon dioxide gas measuring device according to the present invention includes a sample hopper 11, a first cylinder 12, a second cylinder 13, a heating means 12a, a cooling means 13a, a carbon dioxide concentration measuring means 14, and three switching valves. 15a, 15b, 15c, volume measuring means 16, and calculating means 17 are provided.

  The sample hopper 11 inputs a measurement object (for example, carbonated drink) 11 a into the tip 12 b of the first cylinder 12.

  A first switching valve 15 a is disposed between the sample hopper 11 and the first cylinder 12, and a measurement object is transferred from the sample hopper 11 to the first cylinder 12 in accordance with the switching of the first switching valve 15 a. 12b is input.

  The first cylinder 12 is provided with a heating means 12a, and the heating means 12a heats the measurement object 12b supplied to generate a mixed gas containing carbon dioxide gas. Although the heater provided in the side surface of the 1st cylinder 12 can be used for the heating means 12a, it is not limited to this.

  A second switching valve 15b is arranged between the first cylinder 12 and the second cylinder 13, and from the first cylinder 12 to the second cylinder 13 in accordance with switching of the second switching valve 15b. It is configured to move the mixed gas.

  The second cylinder 13 is provided with a cooling means 13a and a volume measuring means 16. The cooling means 13a cools the mixed gas inside the second cylinder 13, and the volume measuring means 16 is a cooled mixing device. Measure the gas volume. The cooling means 13a may be a method of cooling by flowing cooling water through a pipe provided on the side surface of the second cylinder 13, but is not limited thereto. The volume measuring means 16 may obtain the volume by reading the position of the tip 13b of the second cylinder 13, for example, but is not limited to this.

  A third switching valve 15c is disposed between the second cylinder 13 and the carbon dioxide concentration measuring means 14, and the carbon dioxide concentration measuring means 14 is cooled in accordance with the switching of the third switching valve 15c. Measure the carbon dioxide concentration of the mixed gas. As the carbon dioxide concentration measuring means 14, a general carbon dioxide concentration meter can be used.

  The computing means 17 calculates the carbon dioxide content by weight ratio from the carbon dioxide concentration and volume of the mixed gas. A personal computer can be used as the computing means 17, but is not limited to this.

  The three switching valves 15a, 15b, and 15c may be anything that can be switched between open and closed.

  A measurement flow of the carbon dioxide gas measuring device according to the present invention is shown in FIG. FIGS. 4 to 7 show the state of the carbon dioxide measuring device in the measurement process with the first cylinder 12 and the second cylinder 13 as the center.

(Step S1) FIG.
First, a certain amount of carbonated beverage 11b is charged from the sample hopper 11 to the tip 12b of the first cylinder 12. In this case, the first switching valve 15a is opened (at this time, the second switching valve 15b is closed), and the driving cylinder 12c of the first cylinder 12 is driven to retract the piston 12d.

(Step S2) FIG.
The first switching valve 15 a is closed, and a certain amount of carbonated beverage 11 b charged into the tip 12 b of the first cylinder 12 is heated by the heating means 12 a provided in the first cylinder 12. By heating, the mixed gas 11c dissolved in the carbonated beverage 11b can be taken out. In this case, the carbonated beverage 11b is heated to 70 ° C. or higher, which is a temperature at which carbon dioxide gas cannot be dissolved in the liquid. In addition, the carbonated beverage 11b in the figure and the mixed gas 11c generated by heating are shown schematically.

(Step S3) FIG.
Next, the second switching valve 15 b is opened, and the entire amount of the mixed gas 11 c generated in the first cylinder 12 is moved to the second cylinder 13. In this case, the drive cylinder 12c of the first cylinder 12 is driven to advance the piston 12d. The drive cylinder 13c of the second cylinder 13 is left free. This is because the mixed gas 11c moved to the second cylinder 13 is moved at normal pressure.

(Step S4) FIG.
Further, the second switching valve 15 b is closed, and the mixed gas 11 c moved to the second cylinder 13 is cooled to room temperature by the cooling means 13 a provided in the second cylinder 13.

(Step S5) FIG.
Further, the volume of the cooled carbon dioxide gas 11d of the second cylinder is measured by the volume measuring means 16, and then the third switching valve 15c is opened, and the carbon dioxide gas concentration measuring means 14 measures the carbon dioxide gas concentration of the mixed gas 11c. .

(Step S6) FIG.
Next, the carbon dioxide content is calculated by the calculating means 17 from the measured concentration of carbon dioxide gas and the volume of carbon dioxide gas, and is obtained as a weight ratio (weight percent).

  The carbon dioxide content calculated by the calculation means 17 is calculated as follows. That is, since carbon dioxide is 44 g at 22.4 L at normal temperature and normal pressure, 100 mL (milliliter) of a certain amount of carbonated beverage 11 b charged from the sample hopper 11 to the tip 12 b of the first cylinder 12. When the measured normal temperature, normal pressure carbon dioxide concentration is 50%, and the volume is 1 L (liter), the carbon dioxide weight is 0.5 * 44 / 22.4 = 0.98 (g). Is divided by the weight of the carbonated beverage 11b (for example, the above 100 mL = 100 g) to obtain the weight percentage as 0.98 / 100 = 0.98 (%).

  In the above description, the mixed gas 11c moved to the second cylinder 13 is cooled to the room temperature by the cooling means 13a, but instead of being cooled by the cooling means 13a, the temperature of the mixed gas 11c is measured without cooling. Alternatively, the volume may be measured by the volume measuring means 16 and the volume of the mixed gas 11c at normal temperature and normal pressure may be calculated from the measured temperature and the measured volume.

  After the measurement is completed, for example, the switching valve 15d may be opened to drain the carbonated beverage 11b in the first cylinder 12 and prepare for the next measurement.

  Thus, according to the carbon dioxide gas amount measuring device of the present invention, the carbon dioxide gas content can be measured by weight ratio, and the carbon dioxide gas amount of fine carbonated beverages or jelly containing a very small amount of carbon dioxide by weight ratio. This makes it possible to manage the amount of carbon dioxide gas with higher accuracy than the conventional enclosed pressure management.

DESCRIPTION OF SYMBOLS 1 ... Filling container 2 ... Lid 3 ... Pressure gauge 4 ... Detection needle 1A ... Carbonated water 1B ... Space part 11 ... Sample hopper 11a ... Measurement object (carbonic acid Beverage)
11b ... a certain amount of carbonated beverage 11c ... mixed gas 12 ... first cylinder 12a ... heating means 12b ... tip 12c of the first cylinder 12 ... first cylinder 12 Drive cylinder 12d ... piston 13 ... second cylinder 13a ... cooling means 13b ... tip portion 13c of second cylinder 13 ... drive cylinder 14 of second cylinder 13 ... Carbon dioxide concentration measuring means 15a ... first switching valve 15b ... second switching valve 15c ... third switching valve 15d ... switching valve 16 ... volume measuring means 17 ... calculation means

Claims (3)

A carbon dioxide gas measuring device that measures the carbon dioxide content of a measurement object by weight,
A sample hopper, a first cylinder, a second cylinder, a heating means, a cooling means, a carbon dioxide concentration measuring means, three switching valves, a volume measuring means, and a computing means,
The sample hopper is used to load the measurement object.
A first switching valve is arranged between the sample hopper and the first cylinder so that the measurement object is fed from the sample hopper to the first cylinder in accordance with the switching of the first switching valve. Configured,
The first cylinder is provided with a heating means, and this heating means generates carbon dioxide gas by heating the measurement target object.
A second switching valve is arranged between the first cylinder and the second cylinder, and the carbon dioxide gas is mixed from the first cylinder to the second cylinder according to the switching of the second switching valve. Configured to move gas,
The second cylinder is provided with a cooling means and a volume measuring means, the cooling means cools the mixed gas inside the second cylinder, and the volume measuring means determines the volume of the cooled mixed gas. Means to measure,
A third switching valve is arranged between the second cylinder and the carbon dioxide concentration measuring means, and the carbon dioxide concentration measuring means changes the carbon dioxide gas of the cooled mixed gas according to the switching of the third switching valve. To measure the concentration,
The calculating means is a means for calculating the carbon dioxide content by weight ratio from the carbon dioxide concentration and volume of the mixed gas.   The carbon dioxide gas measuring device according to claim 1, wherein the measurement object is heated to 70 ° C. or more by a heating means provided in the first cylinder.   The carbon dioxide gas measuring device according to claim 1 or 2, wherein the carbon dioxide gas moved to the second cylinder is cooled to room temperature by the cooling means.

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