Water gauge of solar water heater

Abstract

The invention provides a water gauge of a solar water heater. A gauge dial is provided with a limiting block used for limiting a gauge hand; the limiting block comprises a water full limiting block arranged on a water full position of the gauge dial; the gauge dial is provided with holes used for the water full limiting block to insert; the holes are set at the different volume indicating positions of the gauge dial; and the limiting block also comprises a 0 position limiting block arranged at a 0 position of the gauge dial. The water gauge can prevent improper water level reading of the solar water heater due to continuous rotation of the gauge hand when the water is full, so that the water gauge accurately indicates the water level in a water tank of the solar water heater and does not generate error accumulation. When the water gauge is used, the water limiting block can be inserted into a corresponding hole according to the volume of the water tank of the solar water heater, so that the water gauge is suitable for solar water heaters with different water tank volumes, greatly reduces the cost, and prevents the error accumulation in two directions. The water gauge has the advantages of simple structure and low cost.

Description

technical field [0001] The invention relates to a solar water heater, in particular to a water level gauge of the solar water heater. technical background [0002] At present, there are mainly the following types of instruments used for water level control of solar water heaters. One is composed of a sensor part, an electronic circuit part, a display part and a power supply, but the sensor part is installed in the solar water heater water tank and has to be pulled remotely. It is very inconvenient to install, use and maintain; the other is an ordinary water meter. The user estimates the amount of water needed to supply water according to the amount of water stored in the purchased water heater, monitors the situation of water supply and closes the valve. This kind of water meter has to be measured by the user several times according to the water storage, and the specific water supply can only be grasped after the water supply is determined. The main disadvantage is that the ...

AI Technical Summary

Problems solved by technology

But the shortcoming of such water level meter is: 1, because the water tank top of solar water heater is provided with overflow hole, when the water tank of solar water heater is full of water, overflow hole drains outwards, to prevent excessive water pressure in the water tank, when the water tank is full like this , if the user does not turn off the water inlet valve in time, the water tank will continue to be filled with water, which will cause the pointer of the solar water heater water level gauge to continue to rotate and cross the water full scale line, resulting in an error in the indicated data, and such errors will cause error accumulation, the user It is impossible to know the exact water level of the water tank, so the water level gauge needs to be adjusted frequently; 2. Since the maximum scale on the dial corresponds to water heaters of different capacities, different dials must be manufactured for water heaters of different capacities, which greatly increases the production cost

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