JPH06331587A - Odor generating device - Google Patents

Abstract

PURPOSE:To properly and uniformly fill a generated odor within a container by heating a sample within a container which can be sealed and generating the odor and then stirring the inside of the container. CONSTITUTION:A container 20 which can be seal is constituted of a container body 21 and a lid 22, for example a ceramic heater 10A, is mounted on a sample stand 7 provided on the inner wall of the container body 21, and then for example a fan 24 is provided on the inner wall opposing the heater 10A as a stirring means. Then, the lid 22 is opened again, a sample 11 such as cellulose power, cotton, and a filtering paper is mount on the heater 10A, the inside of the container body 21 is conditioned to a specific atmosphere, and then a start command is sent from a control device to a temperature controller, the sample 11 is heated straightly by the heater 10A, thus generating an odor. In this case, the fan 24 is rotated to make uniform the generated odor, thus generating and filling an odor within the container 20 and making uniform the door.

Description

Detailed Description of the Invention

[0001]

This invention relates to various substances (hereinafter referred to as
It is called a sample. ) Is a device that controls heating to generate an odor,
In particular, the present invention relates to an odor generating device used for determining the quality of an odor sensor.

[0002]

2. Description of the Related Art FIG. 6 is a schematic block diagram showing a conventional odor generating device, such as an odor and smoke measuring device disclosed in Japanese Patent Laid-Open No. 3-235047. In the figure, reference numeral 1 denotes a main body of the apparatus, which has an intake port 2 on its left side and an exhaust port 3 on its 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 table arranged in the center of the inside of the apparatus main body 1, 8 is an odor generating container covered on the sample table 7, and has an intake hole 9 facing the intake port 2. Container 8
A heater 10 is placed on the sample table 7 inside the heater 1.
A sample 11 is placed on the sample 0, and a thermocouple 12 is placed adjacent to the heater 10 and the sample 11. A temperature controller 13 is electrically connected to the heater 10 and the thermocouple 12, and constitutes a temperature control means together with the heater 10 and the thermocouple 12.

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 apparatus 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.

Next, the operation of the conventional odor generating device constructed as described above will be briefly described below. First, container 8
Open, and the sample 11 is placed on the heater 10. Then, when a start button (not shown) of the control device 16 is pressed, the control device 16 is initialized, and the intake fan 4 is started to start ventilation in the device body 1. Temperature controller 13,
The data of 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, the generated odor, and smoke are measured by the thermocouple 12, the odor sensor 14, and the particle counter 15 at predetermined time intervals.

[0006]

Since the container used in the conventional odor generating device communicates with the outside through the particle counter in addition to the intake hole, the odor generated from the sample is filled in the container. There was a problem not to do. An object of the present invention is to solve such a problem, and an object thereof is to obtain an odor generating device capable of well filling the container with an odor generated in the container.

[0007]

The odor generating device according to the present invention comprises a container capable of being sealed, a sample table provided in the container for placing a predetermined amount of sample, and connected to the sample table.
The temperature control means for generating an odor from the sample by controlling the heating of the sample and the stirring means provided in the container for stirring the inside of the container are provided.

[0008]

In the present invention, the temperature control means controls the heating of the sample in the sealable container to generate an odor,
The container is filled with the generated odor well and evenly.

[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 generating 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, the odor sensor 14 can be installed in the container body 21.

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

Next, the operation of the odor generating 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 controlled to a predetermined atmosphere. When a start command is sent from the device to the temperature controller, the ceramic heater 10A and thus the sample 11 are linearly heated to generate an odor. At this time, according to the present invention, the odor generated by rotating the fan 24 can be made uniform.

2, FIG. 3, and FIG. 4 show sample 11 of cellulose powder, cotton, and filter paper of 1.6 mg and 12 respectively.
It is a graph which shows the change of the resistance value of the odor sensor 14 at the time of heating (smoldering) at the temperature increase rate of ° C / min. In addition, in FIG. 5, a filter paper is used as the sample 11, and the temperature rise rate is 7 ° C./min.
It is a graph which shows the change of the resistance value of the odor sensor 14 when changing to 0 degreeC / min and 20 degreeC / min. As is clear from the graphs in FIGS. 2 to 4, about 600 seconds (about 220 ° C.) after the start of heating
The sensor resistance value starts to decrease after that, and linearly decreases after about 1100 seconds (about 300 ° C.), and becomes saturated after about 1250 seconds. This has a smoldering temperature of 300
When the temperature exceeds ℃, it is considered that the odor is well generated and the odor sensor 14 responds to the generated odor. Further, as is clear from the graph of FIG. 5, the sensor resistance value was the same in the saturated state, except for the time until reaching the saturated state. This is considered to indicate that the total amount of odor generated does not change regardless of the temperature increase rate.
It should be noted that the thick line portion of the curve in the figure shows the variations due to the 16 odor sensors 14.

Therefore, the container 2 of the odor generating device of the present invention.
If the odor sensor 14 is installed in 0, it is possible to determine whether the odor sensor 14 is a good product or a defective product in view of the graphs of FIGS. 2 to 4.

[0015]

As described above, the odor generating device of the present invention comprises a container which can be sealed, a sample table which is provided in the container and which holds a predetermined amount of sample, and which is connected to the sample table. A temperature control means for generating an odor from the sample by controlling heating, and a stirring means provided in the container for stirring the inside of the container are provided, and the container is sealed rather than blown like the conventional example. As a result, odor can be well generated in the container, and the container can be filled and made uniform.

[Brief description of drawings]

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

FIG. 2 is a graph showing changes in heating time of cellulose powder and sensor resistance values.

FIG. 3 is a graph showing changes in heating time of cotton and sensor resistance.

FIG. 4 is a graph showing changes in heating time of a filter paper and a sensor resistance value.

FIG. 5 is a graph showing the heating time of the filter paper and the change in the sensor resistance value when the rate of temperature rise is changed.

FIG. 6 is a schematic configuration diagram showing a conventional odor generating device.

[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 (6)

[Claims] 1. A hermetically-sealed container, a sample table provided in the container for mounting a predetermined amount of sample, and connected to the sample table to heat the sample to generate an odor from the sample. An odor generating device, comprising: a temperature control means; and a stirring means provided inside the container and stirring the inside of the container. 2. The odor generating device according to claim 1, wherein an odor sensor having a thin film of stannic oxide can be installed in the container. 3. The odor generating device according to claim 1, wherein the container comprises a container body provided with an introduction pipe for introducing dry air, and a lid of the container body. 4. The odor generating 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 ceramic heater and a thermocouple that are electrically connected to raise the temperature at a constant gradient. The odor generating device according to claim 1 or 2, comprising a temperature controller capable of performing linearly rising heating. 6. The odor generating device according to claim 1, wherein the stirring means is a fan or the like for uniformizing the odor generated in the container.