JPH0210898B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a temperature detector having a dry bulb temperature sensor and a wet bulb temperature sensor.

FIG. 1 is a sectional view showing a conventional example. Inside the main body 1, a dry-bulb temperature sensor (hereinafter referred to as a dry-bulb sensor) 3 such as a thermistor is installed via a partition plate 2, and a water-absorbing material 4 such as cotton cloth is installed inside the main body 1. Wrapped wet bulb temperature sensor (hereinafter referred to as
A water container 6 is attached below these, and the water absorbing material 4 is extended and immersed in the water 7 stored in the water container 6. It is designed to supply moisture to the wet bulb sensor 5.

Further, a cover 9 having a ventilation hole 8 is attached above the main body 1, and a motor 10 is mounted inside the cover 9.
A propeller 11 that rotates is provided, thereby improving internal ventilation.

However, in the case of the configuration shown in FIG. 1, when the water level of the water surface 12 decreases as the water 7 evaporates, the length of the water supply path by the water absorbing material 4 increases, and the water supply characteristics deteriorate. The state of the ball sensor 5 changes, resulting in a disadvantage that the detected temperature depending on the humidity in the atmosphere becomes inaccurate.

Further, in FIG. 1, the wet bulb sensor 5 is fixed, which has the disadvantage that when the water absorbent material 4 is replaced, it has poor operability and maintenance and inspection are difficult.

The present invention aims to fundamentally solve such drawbacks of the conventional technology, and includes a float that floats on the water surface.
To provide an extremely effective dry-wet-bulb temperature detector in which at least a wet-bulb sensor is fixed to the float, the moisture supply status to the wet-bulb sensor is kept constant, and the water-absorbing material can be easily replaced. It is something.

The details of the present invention will be explained below with reference to the sectional view of FIG. 2 showing an embodiment.

In the figure, a water container 21 that removably fits around the lower part of the main body 1 is attached, and a dry bulb sensor 3 and a moisture sensor 3 are mounted on the upper surface of a float 22 that floats on the water surface 12 of water 7 contained in the water container 21. A ball sensor 5 is locked, and side walls 22a, 22 are provided on both sides of the ball sensor 5.
b are formed and separated by a partition plate 22c, so that the ventilation of both does not affect each other.

In addition, the terminals 24 of the terminal board 23 provided around the inside of the main body 1 and each sensor 3, 5 are connected by a flexible lead wire 25 using a coiled thin electric wire, etc. The float 22 is designed to move up and down freely accordingly.

On the other hand, a cover 9 similar to that shown in FIG. 1 is attached above the main body 1, and forced ventilation is provided by a propeller 11, and these and the water container 21 are integrally cylindrical.

Note that the float 22 is made of expanded polystyrene,
A hollow housing or other material with low specific gravity is used, and a vertical through hole 22d is bored on the side of the wet bulb sensor 5, into which the water absorbing material 4 is immersed into the water 7. In this way, moisture is supplied to the wet bulb sensor 5.

Therefore, the relationship between the wet bulb sensor 5 and the water surface 12 is always constant, the length of the moisture supply path by the water absorbing material 4 does not change, and the moisture supply status to the wet bulb sensor 5 is also maintained constant. The temperature detection status according to the humidity is kept stable.

Moreover, if the water container 21 is removed, the float 22 can be taken out from inside the main body 1, making it extremely easy to replace the water absorbing material 4.

However, only the wet bulb sensor 5 may be locked to the float 22, and the dry bulb sensor 3 may be fixed inside the main body 1, and the motor 10 and propeller 11 may be locked depending on the conditions.
The same effect can be obtained even if .
Various modifications are possible.

As is clear from the above description, according to the present invention, maintenance and inspection are easy, and the temperature detection status of the wet bulb is always constant, and it exhibits remarkable effects as a dry/wet bulb temperature detector for various uses.

[Brief explanation of drawings]

FIG. 1 is a sectional view of a conventional example, and FIG. 2 is a sectional view of an embodiment of the present invention. 1...Main body, 3...Dry bulb temperature sensor, 4...Water absorbing material, 5...Wet bulb temperature sensor, 7...Water, 8...
Ventilation hole, 9...Cover, 10...Motor, 11...
...Propeller, 12...Water surface, 21...Water container, 2
2...Float, 22a, 22b...Side wall, 22
c...Partition plate, 22d...Through hole.

Claims (1)

[Claims] 1. A dry-wet-bulb temperature sensor comprising a dry-bulb temperature sensor and a wet-bulb temperature sensor wrapped in a water-absorbing material, and a water container that supplies moisture to the wet-bulb temperature sensor and is removably fitted to the main body. What is claimed is: 1. A wet and dry bulb temperature detector, characterized in that the detector is provided with a float floating on the water surface in the water container, and at least the wet bulb temperature sensor is latched to the float.