JPH0592695U - Odor diluter - Google Patents

Abstract

(57) [Summary] [Purpose] To measure the dilution factor that represents the odor concentration of the sample gas by the three-point comparison odor bag method by sensory test method,
Provided is an odor diluter which has high measurement accuracy and is suitable not only when the odor is a bad odor but also when it is an aroma or the like. [Structure] Therefore, of the first and second T-shaped branch pipes 7 and 8 provided with open / closed two-way cocks 11, 12, 13 and 13 (common), 14 and 15 at each end, The second branch pipe 8 on the side of the diluted sample odor bag 2 is provided with the integrating flowmeter 6 and the container filled with the activated carbon 4 and the air supply pump 5, and to the first branch pipe 7 on the side of the other sample odor bag 1 side. Respectively connected / disposed syringes 3 having a volume measuring function.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an odor diluting device, and more particularly to a diluting device for measuring the sensory concentration of odors including aroma.

[0002]

[Prior Art]

 Conventionally, a three-point comparative odor bag method based on a sensory test method is known as one of the methods for objectively evaluating the degree of odor of a sample gas in order to prevent odor pollution. In this method, odorous air is diluted with odorless air until the odor is not felt by sensory test, and the odor concentration is determined by the dilution factor. Therefore, an operation of stepwise diluting the sample air is required, and a diluting method / apparatus for simplifying these operations is proposed / disclosed in, for example, Japanese Utility Model Publication No. 63-44755.

This device connects an odor bag and an odorous sample empty bag via two three-way cocks, and the other end of the three-way cock that connects an odorous sample air bag. Is connected to an injection cylinder for sucking a certain amount of odorous air and sending it to the odor bag. At the other end of the three-way cock that connects this odor bag, the odor bag is filled with odorless air for dilution. It is a combination of blowers for sending.

[0004]

[Problems to be solved by the device]

 Here, in the case of diluting a bad odor as in the above example, it is difficult to think that a bad odor is mixed in the air for dilution, so that it is not necessary to pay special attention to the handling of the air for dilution.

On the other hand, recently, various devices have been proposed for obtaining various effects by utilizing fragrances having a feeling of coolness and arousal, and when it is necessary to dilute these fragrances as well. Therefore, it is necessary to take precautions to prevent contamination of the environment where the air for dilution is taken in. On the other hand, the above cited example does not mention this because it only deals with the malodor, and in order to perform accurate dilution, the total amount of air actually sent into the odor bag should be considered. Although it is necessary to verify the volume, in this cited device, the precision of the dilution factor could be relatively low because the total amount was not clarified.

The present invention has been made in view of the problems of the conventional example as described above, and provides a diluting device of this type capable of highly accurate dilution multiple measurement even when the sample is aroma. Has an aim.

[0007]

[Means for Solving the Problems]

 For this reason, in this invention, this kind of odor diluter is connected to each other at one end of each T-shaped horizontal portion of the first T-shaped branch pipe and the second T-shaped branch pipe via a two-way cock. At the other end of each of the horizontal portions of the first and second T-shaped branch pipes, a sample odor bag and a side-by-side odor bag are respectively connected to an integrating flowmeter through a two-way cock. In addition, the T-shaped vertical portion ends of the first and second branch pipes are filled with activated carbon that is connected to a syringe having a volume measuring function and an air supply pump through two-way cocks, respectively. It is intended to achieve the above-mentioned object by configuring the containers to be connected to each other.

[0008]

[Action]

 With the above device configuration, the dilution air is sent through the activated carbon, so it is less affected by odorous substances in the environment of the device, and the amount of air sent to the odor bag is integrated. Since it is measured accurately by the flow meter, a highly accurate dilution factor can be obtained.

[0009]

【Example】

 The present invention will be described below based on embodiments. FIG. 1 shows a schematic configuration diagram of an embodiment of the odor dilution device. (Structure) 1 is a sample odor bag containing sample air containing a relatively high concentration of aroma substances, 2 is an empty odor bag for measurement diluted sample, 3 is a syringe having a volume measuring function, 4 is a container Activated carbon, 5 is an air supply pump (blower), 6 is an integrated flow meter, 11, 12, 13, 14, and 15 are plural Teflon open / close two-way cocks, and 7 and 8 are at the ends. The first modified T-shaped branch pipe and the second T-shaped branch pipe provided with any one of the cocks 11, 12, 13 and 13 (common), 14, 15 as well as 10a, 10b, 10c, 10d for connection, respectively. Each silicon tube is shown.

As described above, the characteristic feature of the present embodiment is that the odor bag for the diluted sample to be measured is included in the first and second T-shaped branch pipes 7 and 8 each having the open / closed two-way cock at each end. The second branch pipe 8 on the second side is provided with a container in which the integrated flow meter 6 and the activated carbon 4 are filled, and the air supply pump 5, and the volume measurement is performed on the first branch pipe 7 on the other side of the sample odor bag 1 side. The injectors 3 having functions are connected / disposed respectively.

(Operation) Next, the operation procedure will be described based on FIG. First, an odor bag 1 containing a sample air containing a high-concentration odor substance and an empty odor bag 2 for measurement are connected using silicon tubes 10a, 10c, etc., as shown in the drawing, and the cocks 11, 12 are connected. Is opened and the cocks 13, 14, 15 are closed, and a predetermined amount of sample air containing the odorous substance in the odorous bag 1 is sucked into the syringe 3.

Next, the cock 11 is closed and the cocks 13 and 14 are opened, and the odorous substance is sent from the syringe 3 to the empty odor bag 2. Then, with the cocks 12 and 13 in the "closed" state and the cock 15 in the "opened" state, the air supply pump 5 is operated and the activated carbon 4 is passed through and the atmospheric air subjected to the adsorption treatment is sent into the odor bag 2. Then, when the display of the laminated flow meter 6 reaches the set value, the cock 14 is put in the "closed" state to stop the operation of the air supply pump 5. By the above procedure, if only the sample has a bad odor, the dilution factor can be measured with extremely high accuracy even in the case of air containing a high concentration odorous substance such as aroma.

[0013]

[Effect of the device]

 As described above, according to the present invention, since the dilution air is adsorbed through activated carbon, it is less likely to be affected by odorous substances in the environment of the device and is sent to the odor bag for measurement. Since the amount of air to be measured is accurately measured by the integrating flow meter, the dilution factor can be measured with high accuracy regardless of bad odor or aroma.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an apparatus according to an embodiment.

[Explanation of symbols]

 1 Smell bag for sample 2 Smell bag for measurement 3 Syringe 4 Activated carbon 5 Pump for air supply 6 Integrating flow meter 7/8 1st / 2nd T-shaped branch pipe 11-15 Two-way cock

Claims (1)

[Scope of utility model registration request] 1. A first T-shaped branch pipe and a second T-shaped branch pipe each having one end of each T-shaped horizontal portion interconnected via a two-way cock, and the first and second T-shaped branch pipes. To the other end of each of the horizontal portions, respectively, is connected a sample odor bag and a side flow meter odor bag through a two-way cock, and the first and second branch pipes. An odor diluter characterized in that a syringe having a volume measuring function and an activated carbon filling container connected to an air feeding pump are connected to each end of each T-shaped vertical portion via a two-way cock. ..