JPH032528A - Water level detector for water tank of cooling water supply device - Google Patents

Abstract

PURPOSE:To detect a water level without being affected by the wave motion of cooling water and to easily set the operation position of a float by providing a slit which travels vertically in a cylindrical wave preventive cover. CONSTITUTION:The wave preventive cover 8 is cylindrical and has its bottom surface open and fixed detachably having its upper end surface adhered to a fitting plate 3 to cover the float 5. A scale 82 indicates a position where the float 5 should operate is displayed along the slit 81 of the cover 8. The water level detecting device 2 is only sunk gradually in a container containing water to enable the operation of the slit 5 to easily be confirmed through the slit 81. Then the operation position is matched with the scale 82 to easily judge whether or not the setting of the operation position is correct. Further, when the cooling water supply device is in operation, wave motion generated by the cooling water is interrupted by the cover 8 because the slit 81 is fitted deviating from the entrance of the water tank, so that the float 5 will not fluctuate. The operating water level is therefore accurately detected and trans mitted to a switch, which never chatters.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention is a cooling water supply device that circulates and supplies cooling water to an object to be cooled such as an electronic device to cool the object to a constant temperature. The present invention relates to a water level detection device for detecting the water level of a water tank provided in the middle of a cooling water circuit so that cooling water can be supplied.

[Conventional technology]

As this type of water level detection device, those shown in FIGS. 4 and 5 are in practical use. In the figure, reference numerals 1 and 1 denote water tanks installed interveningly in the cooling water circuit of the cooling water supply device, through which cooling water flows through an inlet 11 and an outlet 12, and is always stored at an appropriate water level. An air vent 13 and a mounting seat 14 for a water level detection bag W2 are formed on the upper surface of the water tank 1.

The water level detection device 2 is mounted on a support tube 4 to which a mounting plate 3 is fixed to the upper end, and in this case, three floats 5 (5a) are attached to the support tube 4.

5b and 5c) are respectively supported via upper and lower retaining rings 41 so as to be able to move up and down by an appropriate height.

The support tube 4 is provided with a switch (not shown) operated by a float 5, and the ON/OFF state of this switch is guided through a wiring 7 to a control device of the cooling water supply device.

The water level detection device 2 sends an appropriate signal regarding the water level of the water tank 1 through the three floats 5, so that an appropriate amount of cooling water is always stored in the water tank 1, and the cooling water supply device is thereby operated normally. .

[Problem to be solved by the invention]

The cooling water in the water tank 1 may ripple depending on the condition of the cooling water sent from the inlet 11. In this case, in the conventional water level detection device, the float 5 is moved by the waves of the cooling water and the switch is operated at a water level different from the actual water level, or the switch is frequently turned on and off.
There was a problem where switching to F would cause chattering on the switch. Alternatively, when setting the operating position of the float 5, a water level detection device is temporarily attached to a container equipped with a water level scale, and then water is gradually poured into the container to confirm the setting of the position. This had the disadvantage of requiring time.

SUMMARY OF THE INVENTION An object of the present invention is to provide a water level detection device that detects the water level without being affected by waves of cooling water in a water tank and allows easy setting of the operating position of the float.

[Means for Solving the Problems] In order to achieve the above object, according to the present invention, the water tank is provided in a water tank disposed in a cooling water circuit of a cooling water supply device through a cooling water inlet and an inlet. In a water level detection device that detects the water level using a float placed at a certain height in a tank, a cylindrical wave-break cover that surrounds the float and has an open bottom is provided, and a slit running vertically in the wave-break cover is provided. shall be provided.

[Effect]

The ripples of the cooling water are blocked by the wave-proof cover, and the water surface in contact with the float is always kept calm. Therefore, malfunction of the switch is prevented. In addition, by marking the wave-proof cover along the slit in accordance with the set position of the float, you can easily confirm the setting of the float's operating position by comparing the float's operating position with the scale in the aquarium. can do.

〔Example〕

1 to 3 show embodiments of this invention,
Components common or identical to those in FIGS. 4 and 5 are designated by the same reference numerals.

In FIGS. 1 to 3, reference numeral 8 denotes a cylindrical wave-proof cover with an open bottom, which is removably fixed to the mounting plate 3 with its upper end in close contact with the mounting plate 3, and surrounds the float 5.

This wave-proof cover 8 has a slit 81 running vertically, and a scale 82 indicating the position at which the float 5 should operate is displayed along this slit 81. Since the mounting plate 3 is closely attached to the mounting seat 14, the scale 82 can be easily displayed by changing the distance from the mounting seat to the water level.

In the above-described configuration, the operation of the float 5 can be easily confirmed through the slit 81 simply by gradually submerging the water level detection device 2 into a container filled with water.

By comparing the operating position with the scale 82,
It can be easily determined whether the setting of the operating position is correct or not. In this way, confirmation and setting of the operating position is extremely easy.

Furthermore, when the cooling water supply system is in operation, the water level detection device 2 is installed with the slit 81 facing away from the inlet 11 of the water tank 1. It is completely blocked and there is no fluctuation of flows 1-5. Therefore, the float 5 always accurately detects the operating water level and transmits it to the switch, and does not cause chattering in the switch. The slit 81 has an air venting function that allows the air inside the breakwater cover 8 to flow out when cooling water is introduced into the water tank 1, so that the water level inside the breakwater cover 8 is always kept the same as the water level in the water tank 1. It will be done.

〔Effect of the invention〕

According to this invention, the water level is provided in a water tank disposed in a cooling water circuit of a cooling water supply device through a cooling water inlet/outlet, and the water level is detected by a float placed at a constant height in the water tank. In the detection device, a cylindrical wave-break cover with an open bottom that surrounds the float is provided, and a slit running vertically is provided in this wave-break cover, so that the float is It is extremely easy to set and check the operating position of the float by displaying a scale indicating the operating position of the float, and the float is not swayed by the waves of the cooling water in the water tank, ensuring that the cooling water is always accurately supplied. A water level detection device can be provided that detects when an operating water level has been reached.

[Brief explanation of the drawing]

Fig. 1 is a sectional view of a water level detection device showing an embodiment of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a sectional view of a water tank equipped with the water level detection device, and Fig. 4 is a conventional water level detection device. FIG. 5 is a sectional view of a water tank equipped with a conventional water level detection device. 1...Water tank, 2...Water level detection device, 5 (5a, 5b, 5c)...Float, 8...Waveproof cover 8
Figure 1

Claims (1)

[Claims] 1) In a water level detection device that is installed in a water tank disposed in a cooling water circuit of a cooling water supply device through a cooling water inlet/outlet and detects the water level with a float placed at a certain height in the water tank, A water level detection device in a water tank of a cooling water supply device, characterized in that a cylindrical wave-proof cover surrounding the float and having an open bottom is provided, and a slit running vertically is provided in the wave-proof cover.