JP3878469B2 - Open-type humidity chamber for preventing sample drying - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
This invention is an open-type constant temperature chamber that prevents the drying of various samples to be used for physicochemical tests, in particular, an open type constant temperature chamber that is easy to perform mounting movement and other work by opening the mounting table on which the sample container is placed. It relates to a wet device.
[0002]
[Prior art]
Conventionally, this type of humidity chamber is of a constant temperature storage type having a front glass door and the like, and is used for storing samples for a long time in a constant temperature and humidity environment.
[0003]
[Problems to be solved by the invention]
However, there is a problem that work other than storage cannot be performed in such a closed-type humidity chamber, and an air curtain partitioning method that replaces the glass door has been tried, but the air curtain airflow is changed to dry the sample. There is a problem that may be promoted. In addition, it takes a huge amount of equipment costs to arrange the environment of the entire laboratory so that it is suitable for the sample, and the environment suitable for one sample is often not suitable for other samples, which may adversely affect the operator. So realization is difficult. In recent years, there has been an increase in the number of workstations that automatically perform testing and inspection using a flow operation method, and it is desired to provide a humidity chamber capable of working while maintaining an optimum environment for the sample. Furthermore, it has become possible to test and inspect with a very small amount of sample due to the development of inspection methods, but there is a problem that a very small amount of sample is quickly dried even during dispensing work.
[0004]
[Means for Solving the Problems]
The present invention provides a water tank with a heater that raises water vapor in the middle of an air passage that takes in and blows air by a blower, wets the blown air with water vapor that rises on the water tank, Spraying from the air outlet toward the sample container on the open type mounting table having an open top surface provided facing the air outlet, prevents the sample in the sample container from drying and prevents condensation on the mounting table. This problem is solved by providing a constant temperature mechanism including a heater to prevent moisture from being mixed into the sample container due to condensation .
[0005]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 is an explanatory diagram showing the configuration of the present invention in a simplified manner. A blower that takes in outside air and blows air, a blower passage connected to the blower, and an area that generates water vapor in the middle of the blower passage is provided to pass through. Provided with an open top mounting table on which the sample container is placed facing the air outlet of the air passage, and the sample such as the sample container on the mounting table is appropriately wetted. Air is continuously supplied to prevent the sample from drying. In addition, the air in which water is dissolved by the intake of water vapor has the property that it is difficult to condense unlike the water of large particles that a general humidifier blows out.
[0006]
FIG. 2 shows an example of a detailed embodiment, and the intake air is rectified as a blower that takes in outside air to almost the entire length of one side of a bowl-shaped humidity chamber body 1 with the upper surface open and blows air. A cross flow fan 2 that is uniformly sent out is attached, a water tank 4 that generates water vapor by heating of the heater 3 at the inner bottom of the main body 1, and a mounting table 5 such as an open top sample container above the water tank 4. Furthermore, when the air sent from the cross flow fan 2 passes over the water tank 4, it is steamed and blown toward the sample container 6 etc. on the mounting table 5 so that the angle can be freely adjusted. An air passage 8 having an outlet 7 is formed. By using the crossflow fan 2 as the blower, it is possible to prevent the air of the airflow disturbed by the rotation of the fan from being swirled by a normal blower fan. Further, the air passage 8 is formed in a curved shape having no corners so that the air rectified by the cross flow fan 2 is not disturbed again by irregular reflection or the like.
[0007]
A humidity sensor 9 is provided at one or several places on the upper surface of the mounting table 5 to detect the humidity of the blown-off air, feed back to the heater 3, adjust the output of the heater 3, and water vapor generated from the water tank 4. The humidity is controlled to be constant by adjusting the amount. In addition, the mounting table 5 is equipped with a thermostatic mechanism 10 for controlling the temperature so that moisture in the air supplied by blowing is not further condensed. As shown in the figure, the constant temperature mechanism 10 may be of a type in which a heater is directly attached in addition to the embedded pipe 10a type for circulating a constant temperature liquid from an external constant temperature liquid circulation device (not shown). The water in the water tank 4 that decreases due to the generation of water vapor is maintained at a substantially constant amount so as not to cause a large temperature change by a water replenisher (not shown) comprising an automatic on-off valve linked with a water level sensor. I am doing so.
[0008]
When the humidifier of the present invention configured as described above is operated, the air sent from the cross flow fan 2 is moistened with water vapor rising from the water tank 4 in the air passage 8 and is wetted from the outlet 7. As a result, the air supply is supplied to 5. The humidity of the air that is rectified by the cross flow fan 2 and uniformly supplied to the entire surface of the mounting table 5 that is temperature-controlled so as not to cause dew condensation through the air passage 8 that does not cause turbulence is the humidity sensor 9 and the heater 3. The sample stored in the sample container 6 placed on the mounting table 5 is placed in an optimal humidity environment, even if it is a very small amount of sample. It will be maintained without drying.
[0009]
Since the top of the mounting table 5 is an open type, the sample container 6 and the like 6 can be moved smoothly and the sample can be dispensed on the mounting table 5 and automated. It can be incorporated into the workstation without any trouble.
[0010]
【The invention's effect】
As described above, the present invention has an air blower, a blower passage through which air sent from the blower passes through water vapor, and an open top surface on which a sample container or the like is placed facing the air outlet of the blower passage. A mounting table is provided so that humid air is appropriately controlled and supplied to the sample such as the sample container. Therefore, even a sample on the mounting table, especially a small amount of sample, can be reliably dried. This produces an effect that can be prevented.
[0011]
A water tank with a heater that generates water vapor in the air passage is provided under the mounting table and is formed as an open type that does not have a lid that covers the mounting table. In addition, it is possible to reduce the size of the apparatus, and it is possible to facilitate the movement of the workstation by facilitating the placement and movement of the sample container and the like, and enabling the dispensing operation in the same state.
[0012]
By performing the foot-back control between the humidity sensor and the heater, there is an effect that it is possible to supply moist air that is always adjusted with high accuracy and constant.
[0013]
By making the blower a cross-flow fan that rectifies and equalizes the wind and forms the air passage in a curved shape without irregular reflection, it is possible to supply moist air evenly over the entire surface of the mounting table. Is produced.
[0014]
Rather than supplying large water particles as in a general humidifier, water is dissolved by water vapor to prevent moisture from condensing, and a constant temperature mechanism is provided on the mounting table to prevent condensation. By doing so, it is possible to surely prevent moisture from being mixed into the sample.
[0015]
By making it possible to freely adjust the angle of the outlet, there is an effect that an optimum outlet state can be obtained in accordance with the height of the sample container or the like.
[Brief description of the drawings]
FIG. 1 is an explanatory view showing a configuration of the present invention. FIG. 2 is a front view showing an example of a detailed embodiment.
Reference numeral 1 denotes a humidity chamber body 2 a cross flow fan 3 a heater 4 a water tank 5 a mounting table 6 a sample container 7 a blowout port 8 a blower passage 9 a humidity sensor 10 a constant temperature mechanism 10a a buried pipe

Claims (2)

A water tank with a heater that raises water vapor is provided in the middle of the air passage that takes in and blows air by a blower, and the air that is blown up by the water vapor that rises above the water tank is wetted, and the wet air is exposed to the air outlet of the air passage. Constant temperature including a heater that sprays from the outlet toward the sample container on the open-type mounting table with an open top surface provided to prevent drying of the sample in the sample container, and prevents condensation on the mounting table An open type humidity chamber for preventing sample drying, wherein a mechanism is provided to prevent moisture from being mixed into the sample container due to condensation . The humidity controller according to claim 1, wherein a humidity sensor is provided on the mounting table, and the heater output of the water tank is controlled by detection of the humidity sensor to adjust the amount of water vapor generated from the water tank .

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