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Heating furnace circulating water circuit control system and control method thereof

A technology of circulating water circuit and control system, applied in heating system, heating method, household heating and other directions, can solve the problems of misjudgment of circulating system, pump burnout, flooding, etc., to prevent the system from emptying, the structure is stable and reliable , the effect of good safety performance

Active Publication Date: 2016-01-06
SHANGHAI RINNAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This circulating waterway water pressure control system is likely to cause misjudgment of the circulating system in the absence of water, and cause fire or flooding when the pump burns out seriously.

Method used

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  • Heating furnace circulating water circuit control system and control method thereof
  • Heating furnace circulating water circuit control system and control method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] figure 1 It is a structural schematic diagram of a heating furnace circulating waterway control system in Embodiment 1. Such as figure 1 As shown, this embodiment proposes a heating furnace circulating waterway control system, including a circulating water pump 100 with a temperature sensor for driving water circulation, a water level electrode 200 for detecting water volume, and a heating system for heating circulating water 300, an expansion tank 400 for maintaining the pressure balance of the circulating water circuit, and a control substrate 500 for system control.

[0030] The heating and return water interface 600 of the circulating water circuit and the expansion water tank 400 are connected respectively to the water inlet 110 of the circulating water pump 100, and the water outlet 120 of the circulating water pump 100 is connected to the heating system 300, and the circulating water circuit is heated by the heating system 300 Output to the heating water supply...

Embodiment 2

[0039] figure 2It is a control flow chart of the heating furnace circulating waterway control method in the second embodiment. Such as figure 2 As shown, this embodiment proposes a method for controlling the circulating waterway of the heating furnace, and performs specific control operations on the circulating waterway control system for the heating furnace described in Embodiment 1, including the following steps:

[0040] Step S101, turn on the power, and obtain the water temperature data Th of the circulating water connection section between the heating system and the heating water supply interface through the temperature sensor of the heating furnace circulating water control system described in the first embodiment, if Th If it is less than the preset temperature t1, execute step S102, and if Th is greater than or equal to the preset temperature t1, execute step S103.

[0041] Step S102, start the circulating water pump (starting the water pump, there may be a short-t...

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Abstract

The invention discloses a circulating water way control system of a heating furnace and a control method thereof. The circulating water way control system of the heating furnace comprises a circulating water pump, a water level electrode, a heating system, an expansion water tank and a control substrate. A heating water returning connector of a circulating water way and the expansion water tank are respectively communicated and connected to a water inlet in the circulating water pump, a water outlet in the circulating water pump is connected to the heating system, after the heating system heats the circulating water way, the circulating water is output to the heating water returning connector, the water level electrode is arranged on a circulating water way connecting segment between the circulating water pump and the heating system, a temperature sensor which is used for detecting the water flow temperature is arranged on a circulating water way connecting segment between the heating system and a heating water supply connector, and the heating system, the water level electrode and the temperature sensor are respectively and electrically connected with the control substrate. The circulating water way control system of the heating furnace is stable and reliable in structure, higher in control precision, better in safety performance and capable of effectively preventing system from burning in an empty mode, the circulating water pump from idling, and the circulating water way from being frozen.

Description

technical field [0001] The invention relates to the technical field of heating circulation waterway control, in particular to a gas heating furnace circulation waterway control system and a control method thereof. Background technique [0002] The structure of the existing circulating water system of the gas-fired closed heating furnace is generally composed of a water pressure switch + a pump + an expansion tank. Among them, the pump plays the role of circulation, and the expansion tank maintains the pressure balance of the circulation waterway. The water pressure switch is used to detect the water pressure in the heating circulation waterway. The water pressure switch relies on the displacement of the internal diaphragm to drive the contacts to turn on and off to signal the substrate, and notify the substrate when the water pressure is too low to control and detect the pressure of the waterway system. There must be a certain water pressure in this control waterway to sen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24D19/10
Inventor 李文娟刘金钊
Owner SHANGHAI RINNAI