JPS6216676Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial application field This invention is a wet-bulb wick in a psychrometric hygrometer.
In particular, it relates to a type of wet bulb wick that uses capillary action to absorb water from a water supply pan to provide moisture.

As long as the wet bulb of such a moisture supply type psychrometric hygrometer retains its inherent capillary action, it is easier to supply moisture than other methods, such as supplying moisture by dropping water droplets from above. Not only is it easy to regulate the appropriate amount, but within a certain range the moisture content is self-replenishing, matching the amount of water evaporation, that is, corresponding to the atmospheric humidity.

Prior Art and its Problems Conventionally, this type of wet bulb device has been widely known, but it has not yet reached the point where the above-mentioned characteristics can be fully utilized due to the following points.

A typical conventional wet bulb wick of this type includes a wet bulb wick that covers the wet bulb temperature sensing end, and a water wick whose lower end is immersed in a water pan. Since the upper end is connected in a kind of blind tube configuration, dirt from water and the atmosphere, dirt when the wet bulb is attached, microorganisms growing in the water, etc. accumulate in the wet bulb, causing a drop in water vapor pressure. In addition, the absorption of moisture due to capillary action is affected, and it is not possible to ensure a good level of self-replenishment of moisture over a long period of time in order to accurately measure humidity.

Conventionally, a proposal has been made as an improvement to the above-mentioned type of wet bulb, namely, placing a water tank below the wet bulb, and placing a water tank above the water tank to the side of the wet bulb. and the upper part of the wet bulb wick by a wick extending between them, and the lower water tank and the lower part of the wet bulb wick by a wick extending between them. (Utility Model Publication No. 45-13822), the water supply system as a whole is a stagnant water type, so the water is almost in a stagnant state. There are problems with the accumulation of dirt and proliferating microorganisms, which are not much different from those of the prior art, and the water practically flows out from the upper water tank to the lower water tank due to the siphon phenomenon, that is, the water supply The system may become the same structure as in the conventional typical one.

The purpose of the present invention is to solve the above-mentioned problems of dirt and microorganism accumulation in the wet bulb of a capillary suction water supply type psychrometric hygrometer, and to reduce the amount of water evaporation that corresponds to the atmospheric humidity due to the capillary phenomenon. To provide a wet bulb that can ensure adequate self-replenishment of water over a long period of time, can fully utilize the above-mentioned characteristics, and can achieve this in a simple manner.

Other objects of the invention will become apparent from the following description.

Means for Solving the Problems The object of the present invention is to provide a wet bulb covering part that covers a horizontal wet bulb in a psychrometric hygrometer, a water suction part extending downward from one side end of the part, and It has a drainage part extending downward from the other end of the wet bulb cover part,
The wet bulb of the psychrometric hygrometer has a downward U-shape including the wet bulb cover part, water suction part, and drainage part, and the water suction part is located at a location lower than the wet bulb, and the water level is The wet and dry bulb hygrometer is characterized in that the lower end of the water pan is immersed in water in which water is maintained at a constant level, and the lower end of the drainage section is located below the water level of the water pan at a location other than the water pan. This is accomplished by a wet bulb test.

Embodiments Next, embodiments of the present invention will be described with reference to the accompanying drawings.

One embodiment of the present invention is shown in FIGS. 1 and 2, and the third
A modification of the implementation of the invention is shown in FIG.

The wet bulb wick in the illustrated embodiment of the present invention includes a wet bulb covering part 1 that tightly covers a horizontally oriented wet bulb 2 in the psychrometric hygrometer, and one end side of the part 1. A water suction part 3 hanging down from this, and a drainage part 9 extending downward from this on the other end side of the wet bulb cover part 1 are provided, and the wet bulb cover part 1, water suction part 3, and drainage part 9 are connected together. The overall shape is a downward U-shape. The water suction part 3 has a lower end immersed in the water of the water supply pan 4,
Due to the capillary action, water is sucked up from the water supply pan 4 and the wet bulb cover 1 is moistened. The water level of the water supply pan 4 is maintained constant by adjusting the amount of water from the water supply pipe 8 using a float 6 of a water level regulator 5 and a water supply nozzle 7. The above drainage section 9
The lower end thereof is located below the water level of the water supply pan at a location other than the water supply pan 4, and water is allowed to drip or flow down from the lower end.

In the embodiments shown in FIGS. 1 and 2, the drainage section 9
A drain pan 10 is disposed below the water supply pan 4 and has a drain pipe 11 in a structure not communicating with the water supply pan 4.

For discharging dripping or flowing sewage from the drainage section 9, a sloped-bottom drainage pan 10' having a drain pipe 11' at the lower end is used instead of the drainage pan 10, and the bottom of the sloped-bottom drainage pan 10' is used. (Fig. 3), or by bringing the lower end of the drainage pan 10 into contact with the drain pan 10.
Instead, a drain pan 10'' of a water storage type (preferably a constant water level holding type) with a horizontal drain pipe 11'' at the bottom and whose water level is lower than the water level of the water supply pan 4 is adopted, and the water is drained into the water of the drain pan. It may also be done by dipping the lower end of the portion 9 (FIG. 4).

The operation of the wet bulb according to the illustrated embodiment of the present invention will now be described.

Water is sucked up from the water supply pan 4 through the water suction section 3 on one end side of the wet bulb cover section 1 to the wet bulb cover section 1 by capillary action, and moistens it. The cover part 1 is led to the drainage part 9 on the other end side and flows down, and the drainage pan 10 is drained from the lower end of the drainage part 9.
Alternatively, it drips or flows down into the drain pipe 11, 11' or 11" and is discharged out of the system.

That is, the moisture flows one way through the route of water supply pan 4 → water suction section 3 → wet bulb cover section 1 → drain section 9, drips or flows down from the lower end of drain section 9, and is discharged without returning to the water supply pan 4. As a result, unused fresh water always flows one way from the water supply pan 4 to the wet bulb cover section 1, and is discarded disposably.

Therefore, the wet bulb cover part 1 is constantly washed away with dirt and the like by this one-way and disposable water flow, so that the wet bulb cover part 1 remains clean for a long period of time.
By supplying fresh water to the water supply pan 4 through the water supply pipe 8, the moisture in the wet bulb cover 1 is kept biochemically clean.
Can prevent the growth and accumulation of microorganisms.

The water level in the water supply pan 4 is kept constant, and water is drawn up from this through the water suction part 3 to the wet bulb cover part 1 by capillary action.
The humidity of the wet bulb cover 1 is stably maintained at a level commensurate with the amount of water evaporation in the wet bulb cover 1 corresponding to the ambient temperature.

The amount of water in the wet bulb cover part 1 can be determined by designing the widths of the water suction part 3 and the drainage part 9, in other words, by setting the amount of water sucked up by the water suction part 3 and the amount of water discharged in the drainage part 9 to appropriate values. , it does not cause detection errors at low temperature and high humidity, and can be made suitable for cleaning the wet bulb cover 1 even at high temperature and low humidity, when the moisture stains are most severe.

Effects of the invention As described above, according to the invention, the problem of dirt and accumulation of proliferating microorganisms on the wet bulb cover of the capillary suction water supply type is solved, and the capillary phenomenon allows water to be released in proportion to the amount of water evaporation corresponding to the atmospheric humidity. It is possible to ensure replenishment over a long period of time and make full use of the above-mentioned characteristics, and it can be done simply by simply modifying the wet bulb cover part to include a water suction part and a drainage part. It is possible to provide an achievable wet bulb wick.

Moreover, since the present invention has the above-mentioned effects, it is guaranteed that the wet-bulb hygrometer equipped with the wet-bulb wick of the present invention can accurately indicate humidity.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional front view showing an embodiment of the present invention;
FIG. 2 is an end view of a longitudinal section of the drainage section of the embodiment of FIG. 1. 3 and 4 are longitudinal sectional front views showing a modification of the present invention. 1...Wet bulb cover part, 2...Wet bulb, 3...Water suction part, 4...Water supply pan, 5...Water level regulator, 6
... Float, 7 ... Water supply nozzle, 8 ... Water supply pipe, 9 ... Drain section, 10, 10', 10" ... Drain pan, 11, 11', 11" ... Drain pipe.

Claims (1)

[Scope of utility model registration request] A wet bulb cover part that covers a horizontal wet bulb in a psychrometric hygrometer, a water suction part extending downward from one side end of the part, and a drainage part extending downward from the other side end of the wet bulb cover part. A wet bulb wick of a psychrometric hygrometer having a downward U-shape including the wet bulb cover part, water suction part, and drainage part,
The water suction part is placed at a location lower than the wet bulb, and its lower end is immersed in the water of a water supply pan to maintain a constant water level, and the lower end of the water drainage part is placed at a location other than the water supply pan at the water level of the water supply pan. A wet bulb wick in a psychrometric hygrometer characterized by being located lower.