Constant water temperature control method and system

A control method and water temperature technology, applied in the direction of lighting and heating equipment, fluid heaters, etc., can solve the problems that affect the adjustment of the controller to the water valve, the slow response speed of the temperature sensor, and the unstable water temperature, so as to achieve the establishment and stability of the water temperature , Improve the control effect and ensure the accuracy of the effect

Inactive Publication Date: 2015-03-25
GUANGDONG PHNIX ECO ENERGY SOLUTION
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Problems solved by technology

[0003] However, the practical PID control algorithm in the prior art will have the following problems: in a low temperature environment, the reaction speed of the temperature sensor will slow down, which will affect the accurate adjustment of the water valve by the controller, resulting in unstable control of the water temperature

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  • Constant water temperature control method and system
  • Constant water temperature control method and system

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Embodiment Construction

[0018] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0019] A control method for constant water temperature, comprising the following steps:

[0020] A. Detect the current water flow through the pulse flowmeter, and measure the temperature data through the temperature sensors installed at the water inlet and water outlet respectively;

[0021] B. Calculate the current water temperature adjustment capability value;

[0022] C. Calculate the target water flow for constant temperature control according to the current water flow, temperature data, current water temperature adjustment capability value and constant temperature target value;

[0023] D. Control the water valve according to the above target water flow.

[0024] As a further preferred embodiment, the temperature data includes the inlet water temperature, the outlet water temperature, and the temperature difference between the inlet and out...

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Abstract

The invention discloses a constant water temperature control method and system. The constant water temperature control method includes the following steps that A, the current water flow is detected through a pulse flowmeter, and temperature data are measured through temperature sensors arranged on a water inlet and a water outlet respectively; B, the current water temperature adjusting capacity value is calculated; C, the target water flow used for achieving constant temperature control is calculated according to the current water flow, the temperature data, the current water temperature adjusting capacity value and a constant temperature target value; D, a water valve is controlled according to the target water flow. As the water flow is detected through the pulse flowmeter, and the temperature is detected through the temperature sensors, it is avoided that in the prior art, the measuring accuracy of the temperature sensors is affected by the environment temperature because single sensors are used; the water valve is accurately adjusted through the pulse flowmeter, and the effect of control over the constant water temperature is improved. The constant water temperature control method and system can be widely applied to the technical field of heat pumps.

Description

technical field [0001] The invention relates to the technical field of heat pumps, in particular to a constant water temperature control method and system. Background technique [0002] In the past, heat pump water heaters did not have flow detection, and the main water valve could only be adjusted through the PI algorithm of the PID algorithm to control the water flow, thereby achieving the effect of controlling and constant water temperature. [0003] However, the practical PID control algorithm in the prior art will have the following problems: in a low temperature environment, the reaction speed of the temperature sensor will slow down, which will affect the accurate adjustment of the water valve by the controller, resulting in unstable control of the water temperature. Contents of the invention [0004] In order to solve the above technical problems, the object of the present invention is to provide a constant water temperature control method. [0005] In order to so...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20
Inventor 张东乾高翔刘远辉冯炳南
Owner GUANGDONG PHNIX ECO ENERGY SOLUTION
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