JP2002107345A - Oxygen content meter of filling filler or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an oxygen content meter of a filling filler or the like, that is only slight deteriorated by carbon dioxide gas or influenced by an organic in a sample gas, and can accurately measure oxygen concentration. SOLUTION: The oxygen content meter of a filling filler or the like comprises a case body that can be installed on a floor surface or the like, a gas passage that mounts a vacuum pump for sucking the sample gas or a calibration gas from a sample gas inlet and a calibration gas inlet, that are provided on the wall surface of the case body and unloading the gas from a gas outlet that is provided on the wall surface of the case body, a gas selection valve, that is mounted to the upstream section of the gas passage and selectively supplies the sample gas or the calibration gas, and a gas flowmeter, a thermomagnetic air type oxygen content meter, and a gas flow rate control valve that are successively included the gas passage between the gas selection valve and the vacuum pump.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an oxygen concentration measuring device such as a filling filler for continuously measuring the oxygen concentration in the exhaust gas of a filling filler such as soft drink and the fermentation product gas.

[0002]

2. Description of the Related Art Conventionally, the measurement of the oxygen concentration in the exhaust gas of a filling filler uses a galvanic cell type sensor or a zirconia type sensor.

[0003]

A conventional sensor using a galvanic cell type sensor has a drawback that the sensor is easily deteriorated by carbon dioxide gas, and a sensor using a zirconia type sensor is greatly affected by an organic substance in a sample gas, so that it is not accurate. There was a drawback that measurement could not be performed.

The present invention has been made in view of the above-mentioned conventional drawbacks,
It is an object of the present invention to provide an oxygen concentration measuring device such as a filling filer capable of accurately measuring the oxygen concentration with little deterioration due to carbon dioxide gas and little influence of organic substances in a sample gas.

The foregoing and other objects and novel features of the invention will become more fully apparent when the following description is read in conjunction with the accompanying drawings. However, the drawings are for explanation only, and do not limit the technical scope of the present invention.

[0006]

In order to achieve the above object, the present invention provides a case body which can be installed on a floor or the like, and a sample gas inlet and a correction gas inlet provided on the wall of the case body. A gas passage provided with a vacuum pump for sucking a sample gas or a correction gas and discharging the gas gas from a gas outlet provided on a wall surface of the case body; and the sample gas or the correction gas provided upstream of the gas passage. And a gas flow meter, a thermomagnetic wind-type oximeter and a gas flow control valve sequentially disposed in the gas passage between the gas selection valve and the vacuum pump. It constitutes an oxygen concentration measuring device such as a filling filler.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the embodiments shown in the drawings.

In the first embodiment of the present invention shown in FIGS. 1 to 5, reference numeral 1 denotes an oxygen concentration measuring device such as a filling filer for soft drinks or the like. Case body 2 that can be installed on a surface
A sample gas or a correction gas is sucked from a sample gas inlet 3 provided at a position near an upper portion of one of the side wall surfaces 2a of the case body 2 and a correction gas inlet 4 provided at a position near the center of the case body 2, A gas passage 7 provided with a vacuum pump 6 for discharging from a gas outlet 5 provided at a lower portion of one of the side wall surfaces 2a; and the sample gas or gas gas provided upstream of the gas passage 7. An operation knob 8a for selectively supplying a correction gas is sequentially interposed in a gas selection valve 8 located on the front surface of the case body 2 and in the gas passage 7 between the gas selection valve 8 and the vacuum pump 6. The filter 9, the display unit 10a is a gas flow meter 10 located in front of the case body 2, the indicator 11a is a thermomagnetic wind type oxygen concentration meter 11 located in front of the case body 2, and the operation knob 12a is the casing. A gas flow control valve 12 located in front of the gas body 2, an electromagnetic valve 13 interposed in a gas passage 7 between the sample gas inlet 3 and the gas selection valve 8, It comprises an operation changeover switch 14 provided on a wall surface and a correction gas supply tank 15 connected to the correction gas inlet 4.

As shown in FIG. 5, the thermomagnetic wind type oxygen concentration meter 11 includes a through chamber 17 in which an inlet 16 and an outlet 16A of a sample gas are formed, and a blowing-side thermistor 1 as shown in FIG.
The measuring chamber 20 includes the air-receiving-side thermistors 19 and 19 disposed outside the measuring chambers 8 and 18, and a case 21 that covers the measuring chamber 20 and the through chamber 17 so as to allow a gas flow as indicated by an arrow. Commercial products are used.

In the oxygen concentration measuring device 1 such as a filling filler having the above-described structure, the operation changeover switch 14 is operated to operate the solenoid valve 1.
3, the vacuum pump 6 is driven, and the operation knob 8a of the gas selection valve 8 is operated to suck the correction gas to correct the thermomagnetic wind type oxygen concentration meter 11, and then the gas selection valve 8 is operated. By operating the knob 8a to aspirate the sample gas, the oxygen concentration measured by the thermomagnetic wind oximeter 11 is displayed on the indicator 11a.

[0011]

Next, different embodiments of the present invention shown in FIGS. 6 to 9 will be described. In the description of the different embodiments of the present invention, the same components as those of the first embodiment of the present invention are denoted by the same reference numerals, and duplicate description will be omitted.

The second embodiment of the present invention shown in FIGS. 6 and 7 is different from the first embodiment of the present invention mainly in that a gas passage 7A without an electromagnetic valve and a filter is provided. In terms of use, even with the oxygen concentration measuring apparatus 1A such as a filling filer configured as described above, the same operation and effect as those of the first embodiment of the present invention can be obtained.

The third embodiment of the present invention shown in FIGS. 8 and 9 is different from the first embodiment of the present invention mainly in that an air purifier 22 or a dehumidifier 23 is used instead of a filter. The use of the gas passage 7B interposed with one or both of the above also allows the oxygen concentration measuring device 1B such as a filling filler configured as described above to have the same configuration as that of the first embodiment of the present invention. The operation and effect can be obtained, and the air cleaner 22 and the dehumidifier 23 can be efficiently prevented from adversely affecting the measurement of the thermomagnetic wind type oxygen concentration meter 11 and can be accurately measured.

[0014]

As apparent from the above description, the following effects can be obtained in the present invention.

(1) A sample body or a correction gas is sucked from a case body that can be installed on a floor or the like, and a sample gas inlet and a correction gas inlet provided on the wall surface of the case body, and the sample body or the correction gas is sucked into the case body wall surface. A gas passage provided with a vacuum pump for discharging from a provided gas outlet, a gas selection valve provided at an upstream portion of the gas passage to selectively supply the sample gas or the correction gas, Since it is composed of a gas flow meter, a thermomagnetic wind oximeter and a gas flow control valve sequentially arranged in the gas passage between the valve and the vacuum pump, the thermomagnetic wind oximeter is Unlike the galvanic cell type sensor, there is no problem such as deterioration of the sensor due to carbon dioxide gas, and unlike the zirconia type sensor, it is hard to be affected by the organic matter in the sample gas. It can be measured.

(2) According to the above (1), since the sample gas is sucked by the vacuum pump, the sample gas can be reliably sucked and the measurement can be continuously performed.

(3) According to the above (1), since the case body is provided with a vacuum pump, a thermomagnetic wind type oxygen concentration meter, etc., the handling is easy and the installation place can be easily changed.

(4) Claim 2 has the same effect as (1) to (3).

[Brief description of the drawings]

FIG. 1 is a front view of a first embodiment of the present invention.

FIG. 2 is a left side view of the first embodiment of the present invention.

FIG. 3 is a right side view of the first embodiment of the present invention.

FIG. 4 is a circuit diagram according to the first embodiment of the present invention.

FIG. 5 is an explanatory diagram of a thermomagnetic wind type oxygen concentration meter.

FIG. 6 is a front view of a second embodiment of the present invention.

FIG. 7 is a circuit diagram according to a second embodiment of the present invention.

FIG. 8 is a front view of a third embodiment of the present invention.

FIG. 9 is a circuit diagram according to a third embodiment of the present invention.

[Explanation of symbols]

1, 1A, 1B: Oxygen concentration measuring device such as filling filler,
2: Case body, 3: Sample gas inlet, 4:
Correction gas inlet, 5: gas outlet, 6: vacuum pump,
7, 7A, 7B: gas passage, 8: gas selection valve,
9: Filter, 10: Gas flow meter, 11: Thermomagnetic wind type oxygen concentration meter, 12: Gas flow control valve, 13:
Solenoid valve, 14: operation changeover switch, 15: correction gas supply tank, 16: inlet, 16A: outlet, 1
7: through chamber, 18: blast side thermistor, 1
9: Wind-side thermistor, 20: Measurement chamber, 21:
Case, 22: air purifier, 23: dehumidifier.

Claims (2)

[Claims] 1. A case that can be installed on a floor or the like, and a sample gas or a correction gas is sucked from a sample gas inlet and a correction gas inlet provided on a wall surface of the case body and provided on a wall surface of the case body. A gas passage provided with a vacuum pump for discharging the gas from the gas outlet, a gas selection valve provided at an upstream portion of the gas passage, for selectively supplying the sample gas or the correction gas, and a gas selection valve. An oxygen concentration measuring device, such as a filling filler, comprising a gas flow meter, a thermomagnetic wind type oxygen concentration meter, and a gas flow rate control valve which are sequentially interposed in the gas passage between the gas pump and the vacuum pump. 2. A case body that can be installed on a floor or the like, and a sample gas or a correction gas that is sucked from a sample gas inlet and a correction gas inlet provided on a wall surface of the case body and provided on a wall surface of the case body. A gas passage provided with a vacuum pump for discharging the gas from the gas outlet, a gas selection valve provided at an upstream portion of the gas passage, for selectively supplying the sample gas or the correction gas, and a gas selection valve. A filter, a gas flow meter, a thermomagnetic wind type oximeter and a gas flow control valve which are sequentially interposed in the gas passage between the vacuum pump and the gas pump, between the sample gas inlet and the gas selection valve. An oxygen concentration measuring device such as a filling filler, comprising an electromagnetic valve interposed in a gas passage.