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Method and device for monitoring water capacity in solar water heater tank

A technology for solar water heaters and internal water volume, applied in solar thermal devices, solar thermal power generation, heating devices, etc., can solve problems such as high failure rate, increased maintenance costs, and inconvenience for users to use

Active Publication Date: 2008-06-25
HONEYWELL (CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the water level sensor fails, after-sales engineers have to climb the roof to replace it
Such a high failure rate causes inconvenience for users and increases maintenance costs

Method used

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  • Method and device for monitoring water capacity in solar water heater tank
  • Method and device for monitoring water capacity in solar water heater tank

Examples

Experimental program
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Embodiment Construction

[0023] Fig. 1 has shown the traditional water level sensor that solar water heater uses, and wherein traditional water level sensor 2 is positioned at the inside of solar water heater water tank 1, and it stretches below the water surface until close to the position of water tank bottom, and traditional water level sensor 2 can sense water level directly, That is, the change of the position of the water surface.

[0024] The traditional water level sensor shown in Figure 1 works in the water tank of the solar water heater. Due to the large heat gain of the vacuum tube, a lot of heat is transferred to the water heater, so that the temperature of the water tank can reach 100°C for a long time, and even as high as 200°C when there is no water. High temperature increases the failure rate of the water level sensor and reduces the life of the water level sensor.

[0025] On the other hand, the water quality in many places has different degrees of problems. The scale generated during...

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Abstract

The invention provides a detecting device for water quantity inside a water tank of a solar water heater, which comprises at least one weighing sensor used for sensing at least partial weight of the water tank of the solar water heater and a controller acquiring a measured value for characterizing the weight weighed by the weighing sensor based on electric signals from the weighing sensor, a water quantity percentage between the current water quantity and the maximal water quantity inside the water tank can be calculated further according to a free-load measured value, a full-load measured value and the current measured value.

Description

technical field [0001] The invention relates to a device and a method for monitoring the water quantity in a solar water heater water tank. Background technique [0002] The sensor used to measure the water volume in the solar water heater tank is an important part of the solar water heater. The water volume measurement and control of solar water heaters are inseparable from the sensors that measure water volume. Stable sensors are the guarantee for the intelligent control of the entire solar water heater. [0003] At present, a water level sensor is usually used to measure the position of the water surface in the water tank, which indirectly reflects the water volume in the water tank. There are many kinds of existing water level sensors, such as contact type, float type and so on. These traditional sensors all need to be placed in a water tank and in contact with water. Due to the high temperature in the water tank of the solar water heater (it can be at 100°C for a lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01F23/20F24J2/46
CPCY02E10/40
Inventor 孙文龙高洁刘冠军
Owner HONEYWELL (CHINA) CO LTD
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