JPH06331586A - Odor measuring instrument - Google Patents

Abstract

PURPOSE:To accurately measure odor by heating a sample stand within a container which can be seal and generating odor from a mount sample and then measuring odor while stirring the inside of the container. CONSTITUTION:A sample stand 7 is provided on the inner wall of a container body 21, for example a ceramic heater 10A, is mount on it, a sample 11 such as cellulose powder, cotton, or a filtering paper is mount on it, and a thermocouple 12 is placed adjacently to the heater 10A and the thermocouple 12. A temperature controller is connected to the heater 10A and the thermocouple 12. After the inside of the container body 21 is conditioned to a specific atmosphere, a start command is send from a control device to the temperature controller. thus heating the sample 11 with the heater 10A and generating odor. The amount of the generated odor is measured by an odor sensor 14. According to the configuration, odor can permeate inside the container 20 since the container 20 is closed and can be made uniform by a fan 24, thus accurately measuring odor.

Description

Detailed Description of the Invention

[0001]

This invention relates to various substances (hereinafter referred to as
It is called a sample. ) Is related to the device for measuring the odor generated when heating.

[0002]

2. Description of the Related Art FIG. 2 shows, for example, JP-A-3-235047.
It is a schematic block diagram which shows the conventional odor and smoke measuring apparatus like the one disclosed by the publication. In the figure, reference numeral 1 is a main body of the measuring apparatus, which has an intake port 2 on the left side and an exhaust port 3 on the right side. The intake port 2 is provided with an intake fan 4, a HEPA filter 5 as a dust filter, and an activated carbon 6 as an odor removing filter.

Reference numeral 7 is a sample stand arranged in the center of the inside of the measuring apparatus main body 1, 8 is an odor generating container covered on the sample stand 7, and has an intake hole 9 facing the intake port 2. A heater 10 is placed on a sample table 7 in a container 8, a sample 11 is placed on the heater 10, and a thermocouple 12 is placed adjacent to the heater 10 and the sample 11. A temperature controller 13 includes a heater 10 and a thermocouple 12.
Are electrically connected to the heater 10 and the thermocouple 12.
Together with this, it constitutes temperature control means.

Reference numeral 14 denotes an odor sensor, which is attached to, for example, the ceiling in the container 8 and has a thin film of stannic oxide.
The amount of odor in the container 8 is measured. And 15
Is a particle counter as a smoke sensor, which is provided on the measuring device main body 1 and communicates with the container 8 to measure the amount of smoke in the container 8. A control device 16 is electrically connected to the temperature controller 13, the odor sensor 14, and the particle counter 15, and controls these devices 13 to 15.

The operation of the conventional odor and smoke measuring apparatus constructed as described above will be briefly described below. First,
The container 8 is opened, and the sample 11 is placed on the heater 10. Then, when the start button (not shown) of the control device 16 is pressed,
The control device 16 is initialized and the intake fan 4 is activated to start ventilation in the measuring device body 1. The data of the temperature controller 13, the odor sensor 14, and the particle counter 15 are read by the control device 16, and when it is judged that the test environment is available, a start command is sent to the temperature controller 13. As a result, the sample 11 is heated by the heater 10, and the temperature of the sample 11 increases at predetermined time intervals.
The generated odor and smoke are thermocouple 12 and odor sensor 1, respectively.
4, measured by the particle counter 15.

[0006]

Since the container used in the conventional odor and smoke measuring device communicates with the outside through the particle counter in addition to the intake hole, the odor generated from the sample is not contained in the container. However, there is a problem in that the accuracy of measurement by the odor sensor is poor because it does not fill the inside. This invention
The present invention has been made in order to solve such a problem, and an object thereof is to obtain an odor measuring device capable of accurately measuring the odor generated in a container.

[0007]

An odor measuring device according to the present invention comprises a container capable of being sealed, a sample table for mounting a sample in the container, and a sample table connected to the sample table for heating the sample table. Temperature control means for generating an odor from the mounted sample by controlling, provided in the container, stirring means for stirring the inside of the container, and arranged in the container,
And a detection means for measuring the odor generated from the sample.

[0008]

In the present invention, the temperature control means controls the heating of the sample in the sealable container to generate an odor,
The generated odor is measured by the detection means.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an embodiment of an odor measuring device according to the present invention. In the figure, 20 is a sealable container, which comprises a container body 21 and a lid 22 thereof. An introduction pipe 23 for introducing dry air is provided inside the container body 21. Container body 21
A sample table 7 is provided on the inner wall of the heater, a heater, for example, a ceramic heater 10A is placed on the sample table 7, and a sample 11, for example, cellulose powder, cotton or filter paper is placed on the ceramic heater 10A. A thermocouple 12 is placed adjacent to 10A and the sample 11. The ceramic heater 10A and the thermocouple 12
A temperature controller (not shown) is electrically connected to.

A stirring means such as a fan 24 is provided on the inner wall of the container body 21 facing the ceramic heater 10A. Furthermore, at least one detection means, for example, the odor sensor 14, is arranged in the container body 21.

The above-mentioned ceramic heater 10A, thermocouple 12, and temperature controller constitute temperature control means,
The temperature controller and odor sensor 14 are electrically connected to a control device (not shown) similar to that described with reference to FIG.

Next, the operation of the odor measuring device of the present invention will be briefly described. First, the lid 22 is opened, the sample 11 is placed on the ceramic heater 10A, and the inside of the container body 21 is set to a predetermined atmosphere and then controlled. When a start command is sent from the device to the temperature controller, the ceramic heater 10A and thus the sample 11 are heated and an odor is generated. The amount of odor generated is measured by the odor sensor 14. At this time, according to the present invention, the odor generated by rotating the fan 24 can be made uniform. Further, in preparation for the next measurement, an inert gas is introduced into the container body 21 through the introducing pipe 23 from a replacement means such as a cylinder (not shown) filled with a predetermined gas such as an inert gas, and the inside of the container 20 is made inert. It may be replaced by gas, or may be gas for adjusting environmental conditions such as humidity.

[0013]

As described above, the odor measuring device according to the present invention includes a container which can be sealed, a sample stage which is provided in the container and on which a sample is placed, and which is connected to the sample stage to heat the sample stage. Temperature control means for generating an odor from the mounted sample by controlling, stirring means provided in the container for stirring the inside of the container, and arranged in the container to measure the odor generated from the sample Since the container is sealed instead of blowing like the conventional example,
The generated odor fills the inside of the container and is made uniform, so that the odor can be accurately measured.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing a conventional odor and smoke measuring apparatus.

[Explanation of symbols]

 7 sample stage 10A ceramic heater 11 sample 12 thermocouple 14 odor sensor 20 container 21 container body 22 lid 23 introduction tube 24 fan

Claims (7)

[Claims] 1. A container capable of being sealed, a sample table provided in the container for mounting a sample, and connected to the sample table, and by controlling the heating of the sample table, an odor is generated from the mounted sample. A temperature control means, a stirring means provided in the container for stirring the inside of the container, and a detection means arranged in the container for measuring the odor generated from the sample, Odor measuring device. 2. The odor measuring device according to claim 1, further comprising a replacement unit that is filled with a predetermined inert gas, is placed outside the container, and replaces the inside of the container with the gas. 3. The odor measuring device according to claim 1, wherein the container comprises a container main body provided with an introduction pipe for introducing dry air, and a lid of the container main body. 4. The odor measuring device according to claim 1, wherein the sample is cellulose powder, cotton or filter paper. 5. The temperature control means includes a ceramic heater that directly heats the sample stage, a thermocouple that detects the temperature of the sample, and a straight line that is electrically connected to the ceramic heater and the thermocouple to raise the temperature constantly. 2. A temperature controller capable of performing ascending heating or constant temperature heating which is kept constant.
Or the odor measuring device of 2. 6. The odor measuring device according to claim 1, wherein the stirring means is a fan or the like for equalizing the odor generated in the container. 7. The odor measuring device according to claim 1, wherein the detecting means is an odor sensor having a thin film of stannic oxide.