JPS6010679Y2 - Water bath heating device - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a water bath for heating a solution in an analytical device such as COD measurement as water quality measurement, and relates to a water heating device in the bath.

For COD measurement, it is necessary to heat the solution to be measured in a boiling solution for 30 minutes.

FIG. 1 shows a schematic configuration of a water bath.

A heater 2 is connected to the bottom of the water base 1 and controls the temperature of the water 3 in the bath to a desired temperature I.

A measurement container 4 containing a solution to be measured is immersed in a water bath 1 by a chain belt 5, and the solution to be measured is heated with water 3 for a predetermined period of time.

The steam generated from the water bath 1 is forced out through the duct 6.

In such a water bath, the solution to be measured is heated to 100°C.
If it is necessary to heat the water 3 nearby, the water 3 is also heated to approximately the same temperature, but in order to automatically move the measurement container 4, the upper part of the water bath 1 has an open structure.

As a result, there was a lot of vapor emanating from the ice surface of water bath 1, and although the water temperature needed to be close to 100°C, it was actually only possible to raise the water temperature to about 95°C to 96°C. It was even lower in solution.

Although the capacity of the heater 2 was increased, the rise in water temperature was small and the amount of steam generated was only increased needlessly.

Further, although the cover 7 is provided as shown by the imaginary line, it is not possible to cover the entire surface of the bath 1 in order to move the container 4 as described above, and the water temperature cannot be maintained at the desired temperature.

In this way, with the conventional water bath, the desired water temperature, that is, the desired heating of the solution to be measured, cannot be obtained, and the COD value analysis result obtained by manual analysis and the COD value analysis result obtained by heating with a water bath differs by several percentage points. This was inconvenient as it caused errors.

An object of the present invention is to provide a water bath heating device that can suppress heat dissipation from the water surface of the water bath.

FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is a side sectional view thereof.

A water bath 1 having a heater 2 includes an inlet/outlet part 1a for a measurement container 4, an insulating cover 10 that covers the water surface other than the moving part 1b in the bath 1, and an insulating cover 11 that covers the upper part of the moving part 1b.

The cover 10 includes a side plate 10a extending perpendicularly below the water surface to the container loading/unloading section 1a, and a side plate 10b extending along the side (or perpendicularly) of the container 4 below the water surface to the moving section 1b. , 10b is provided with a hole 10c for water convection under the water surface, and a hole 1 for steam convection for escaping steam generated from the water surface covered with the cover 10 under the water surface.
0d is provided.

The cover 11 covers the container moving path except for the moving part of the connecting rod 12 that fixes the container 4 to the chain belt 5, and retains the water vapor rising through the water surface of the moving part or through the hole 10d, and protects the container located in the moving part. Cover with steam.

Moreover, the cover 11 tilts the ceiling plate 11a, and the ceiling part 1
Water droplets formed on 1a are prevented from falling into the container 4.

According to the present invention, since the water path is covered with the first insulating cover, water vapor (heat dissipation) is reduced, and the water temperature can be maintained higher than that of conventional ones, allowing heating and heat retention. Improve effectiveness.

In addition, holes for water and steam convection are provided in the side plate that is integrated with the first heat insulating cover and extends below the water surface, so that steam does not accumulate between the first heat insulating cover and the water surface. On the other hand, the second elastic cover prevents heat from escaping to the outside, resulting in good heat retention efficiency.

Furthermore, since the ceiling plate of the second heat insulating cover is sloped, water droplets will not drip onto the measuring container.

Accordingly, the amount of steam generated is also small (and the peripheral devices are not exposed to high humidity).

According to experiments, at a target value of 100℃, the heater capacity,
The water path etc. were the same as the conventional one, and it was confirmed that the water temperature increased by about 2 to 3°C by applying this example.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram of a conventional water path, FIG. 2 is a perspective view showing an embodiment of the present invention, and FIG. 3 is a side sectional view of FIG. 2. 1... Water path, 2... Heater,
3...Water, 4...Measurement container, 5...
Chain belt, 6...Duct, 10, 11.
...Cover, 10a, 10b...Side plate,
10c, 10d...hole, lla...ceiling board.

Claims (1)

[Scope of utility model registration request] In a water bath with an open top for loading and unloading and moving the measuring container, a side plate that covers the water surface other than the loading/unloading section and the moving section of the measuring container and extends below the water surface is provided with holes for water and steam convection. 1. A water bath heating device comprising a first heat insulating cover and a second heat insulating cover covering the upper part of the measuring container moving part and having an inclined ceiling plate.