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A non-overflow automatic water replenishment control system and method for a solar water heater

A technology for solar water heaters and automatic water replenishment, applied in solar collector controllers, solar heating systems, solar collectors, etc., can solve problems such as overflow of liquid level sensors, achieve overflow control, low cost and reliability sex high effect

Active Publication Date: 2020-08-28
ZHONGBEI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a solar water heater non-overflow automatic water replenishment control system and method to solve the problem of overflow caused by the failure of the liquid level sensor in the liquid control automatic water replenishment system

Method used

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  • A non-overflow automatic water replenishment control system and method for a solar water heater
  • A non-overflow automatic water replenishment control system and method for a solar water heater
  • A non-overflow automatic water replenishment control system and method for a solar water heater

Examples

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specific example 1

[0077] image 3 It is a flowchart of a non-overflow automatic water supply control method for a solar water heater according to a specific example of the present invention. see image 3 , the solar water heater non-overflow type automatic water supply control method in this concrete example comprises the following steps:

[0078] S1: Initialize the control system. Set water usage flag, relay potential U, sampling time interval ΔT, upper limit of water consumption V 1 , the lower limit of water consumption V 0 , sampling time T and cumulative water consumption V t (T). Among them, the flag for water use, taking flag=1 means that the solar water heater is in the state of water use, taking flag=-1 means that the solar water heater is in the state of replenishing water; the relay potential U=1 represents a high level to control the water supply valve to connect, and the relay potential U = 1 represents low level, to control the replenishment valve to disconnect. Cumulative ...

specific example 2

[0090] The non-overflow automatic water supply control method for solar water heaters provided in this specific example uses a two-way inner and outer pipe differential pressure sensor as the flow sensor. The only difference from the first example is the calculation formula of the flow rate, and the rest of the operating procedures are the same. For details, refer to the specific Example 1 will suffice and will not be repeated here.

[0091] The non-overflow automatic water supply control method for solar water heaters provided by the present invention has the following advantages:

[0092] 1) This method of water replenishment control uses the accumulated water consumption for quantitative replenishment. The ideal effect that can be achieved is to replenish the same amount of water after a certain amount of water has been used. In principle, it avoids the liquid level in the traditional liquid level control system. The overflow phenomenon of the position sensor due to dirt. ...

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Abstract

The invention discloses a non-overflow control system and method for the automatic water refilling of a solar water heater. One end of a hot water pipeline in the system is connected with a water tankof the water heater, and the other end of the hot water pipeline is connected with a user load; a cold water pipeline is connected with the hot water pipeline through a water refilling pipeline; a temperature sensor and a flow sensor are both arranged on the hot water pipeline and located between the hot water pipeline and a pipeline connection point where the hot water pipeline is connected withthe water refilling pipeline; a water refilling valve is arranged on the water refilling pipeline; a water-refilling control valve is connected with the temperature sensor, the flow sensor and a relay which is connected with the water refilling valve; and a water-refilling control device is used for acquiring temperatures collected by the temperature sensor as well as flows collected by the flowsensor, and controlling the opening and closing of the water refilling valve through the relay. By adopting the system or method of the invention, the problem that in a liquid-controlled automatic water refilling system, overflow is caused by the failure of a liquid level sensor can be solved.

Description

technical field [0001] The invention relates to the technical field of solar water heaters, in particular to a non-overflow automatic water supply control system and method for solar water heaters. Background technique [0002] At present, the replenishment control of non-pressurized solar water heaters is mainly realized by manual or automatic liquid level control. When the manual water replenishment method is used, due to the lack of sensor signals to estimate the water storage capacity of the water tank, there will usually be insufficient water replenishment or excessive water replenishment and overflow. Manipulate the opening and closing of the replenishment valve to realize automatic replenishment of water. [0003] However, in the actual operation of the liquid level control automatic water replenishment system, the problem of automatic water replenishment function out of control often occurs. The main reason for the above problems is the failure of the liquid level s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24S50/00F24S80/00
CPCF24S50/00F24S80/00Y02E10/40
Inventor 孟江安坤杨良兴程晓斌何建龙
Owner ZHONGBEI UNIV