JPS59108922A - Liquid supplying device - Google Patents

Abstract

PURPOSE:To confirm the time when a liquid supply is required and the time when supply is finished by one lead switch, by constituting a liquid switch by the lead switch, a first float having magnetism, and one more second float. CONSTITUTION:When a liquid is inputted through an injecting port 13, a first float 7 is lifted. The float 7 hits a second float 8 and stops once. A lead switch 1 is operated and a lamp 12 is turned ON. When the liquid is further added, the second float 8 begins the rotation around a shaft 9, and the contact position with the first float 7 is lifted. The distance between the position of a magnet 6 of the first float 7 and the lead switch 6 becomes large, the action of the lead switch 1 is stopped, and the lamp 12 is turned OFF. Thus it is found that the liquid injection should be stopped. When the injection is finished, the liquid flows out of a water discharging port 11. When the liquid level W is lowered below the water discharging port 11, the lead switch 1 is acted again, the lamp is turned ON, thereby indicating the filled up state of the liquid in a container 5.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a liquid level detection device for a liquid replenishment device used in a gas hot water heater or the like.

Conventional structure and its problems Conventionally, water level switches using a reed switch 1 and a float 7 made of magnetic gold as a liquid level switch of a liquid replenishing device have been shown in Figs. 1 and 2. In Figure 1, only one liquid level W position is detected, and in Figure 2, liquid level W positions at multiple locations can be detected by arranging multiple reed switches, but since the number of reed switches increases. In addition to being disadvantageous in terms of cost and parts production, if the distance between the liquid levels W to be detected is large, there will be parts that cannot be detected in the middle.Objective of the InventionThe present invention solves the above-mentioned drawbacks of the conventional art. The purpose is to detect and display the liquid level positions at two locations with a single reed switch.

Structure of the Invention In order to achieve the above object, the present invention comprises a reed switch as a liquid level switch, a first float having magnetism, and another second float, and when the first float is below a certain position, This has the effect of detecting and displaying three cases: a case where the locking position of the first float changes due to the movement of the second float, and a case where the locking position of the first float changes due to the movement of the second float.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

In Figure 3, a stem 2 with a built-in reed switch 1 is shown.
is fixed to the container 6 with a nut 4 via a packing 3. A first float 7 having a ring shape and having a built-in magnet 6 is disposed on the stem 2 so as to be movable up and down.Furthermore, the first float 7 is placed at the upper end of the stem 2 so as to rise as the liquid level W rises. A second float 8, which serves as a stopper when the vehicle is in use, is rotatably fixed around a shaft 9.

Further, the container 5 includes a supply pipe 10 for supplying liquid to the object to be supplied.
and an overflow port 11 are provided.

The reed switch 1 is arranged at a position where it is activated near the first float 7 coming into contact with the second float 8. As the second float 8 moves, the locking position of the first float 7 rises, but when the liquid level W becomes slightly above the overflow port 11, the reed switch 1 stops operating. The shape, buoyancy, etc. of the second float 8 are selected so that the float 7 is placed there.

The effects of the above configuration will be explained below.

When there is little liquid in the container 5, the first float 7 is located below and the reed switch 1 is not activated because the distance from the 170th magnet 7 is large. In this state, lamp 12
is off, indicating that there is little liquid in the container 6.

Therefore, when liquid is poured into the inlet 13, the liquid level gradually rises, and the first float 7 rises accordingly, and eventually the reed switch 1 is activated, and the first float 7 changes to the second float 8. When it hits, it stops for a while. At this time, the reed switch 1 is in an activated state and the lamp 12 is in a lit state (FIG. 3). Furthermore, liquid? As the water is added, the second flow 1-8 also starts rotating around the axis 9, and the contact position with the first float 7 rises. If the distance between the position of the magnet 6 and the reed switch 1 is changed, the operation of the reed switch 1 will stop and the lamp 12 will go out.The diameter of the overflow port 11 is sufficiently small for the liquid injection speed, so the overflow port Even if it starts to overflow from 11, the liquid level W continues to rise,
Since the lamp 12 goes out as described above, it can be confirmed that the injection should be stopped. (Figure 4) After completing the injection,
The liquid above the overflow port 11 escapes from the overflow port 11, and the second float 8 moves in the direction of pushing down the first float 7 again, and when the liquid level W falls to the overflow port 11, the magnet 6 of the first float 7 again moves the reed switch 1. is activated and the lamp 12 lights up. (Fig. 6) In other words, the state in which the container 5 is filled with liquid is displayed until the liquid level W decreases, the first float 7 decreases, the reed switch 1 stops operating, and the lamp 12 goes out. Continue displaying.

According to this embodiment, with the liquid level switch consisting of one reed switch 1, it is possible to realize the replenishment start time and replenishment completion time with a reliable and simple device.

Effects of the Invention As described above, according to the present invention, the time when replenishment of liquid is required and the time when replenishment is completed can be confirmed using a liquid level switch consisting of one reed switch.

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional liquid level detection device that detects only one liquid level position. Figure 2 is a conventional liquid level detection device that uses two reed switches to detect two liquid level positions. A cross-sectional view of
FIG. 3 is a sectional view of a liquid replenishing device which is an embodiment of the present invention, and FIGS. 4 and 5 are explanatory diagrams of the same operation. 1...Reed switch, 2...Stem, 3...Packskin, 4...Nut, 5
...Container, 6...Magnet, 7...
First float, 8...Second float, 9...
...Axis, 1o... Supply pipe, 11...
Overflow port, 12...Lamp, 13...Inlet. Name of agent: Patent attorney Toshio Nakao and 1 other person m1
Figure 2 Figure 3 Figure 4

Claims (2)

[Claims] (1) A reed switch, a magnetic first float, a second float, and a container, the first float is movable relative to the reed switch according to fluctuations in the liquid level, and the second float is connected to the first float. A liquid replenishing device comprising a liquid level switch which acts as a stopper for restricting the upward movement of the first float and whose restricting position of the first float is movable in accordance with the position of the liquid level, and a container having an overflow port. (2) As the liquid level rises, the first float rises and the second
The reed switch is activated near the point where it hits the float, and when the liquid level rises further, the second float moves and the first
A device that changes the locking position of the float.