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Gas water heater and control method and device thereof

A technology of a gas water heater and a control method, which is applied to the control of fluid heaters, fluid heaters, lighting and heating equipment, etc., can solve the problems of loss of wind pressure resistance performance, and achieve good wind pressure resistance, constant air volume, and high speed constant effect

Active Publication Date: 2022-03-08
GUANGDONG VANWARD NEW ELECTRIC CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, part of the anti-wind pressure performance (that is, the ability to resist flue blockage or external natural wind) is lost. When encountering external natural wind or smoke pipe blockage, it is often impossible to actively change the fan speed to ensure full combustion of gas.

Method used

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  • Gas water heater and control method and device thereof
  • Gas water heater and control method and device thereof
  • Gas water heater and control method and device thereof

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Embodiment Construction

[0064] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

[0065] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

[0066] It can be understood that the terms "first", "second" and the like used in this application may be...

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Abstract

The invention relates to a gas water heater and a control method and device thereof. The gas water heater comprises a fan, a water inlet temperature sensor, a water outlet temperature sensor, a water flow sensor, a gas proportional valve and a controller. The water inlet temperature sensor is arranged on the cold water inlet pipe and used for obtaining the cold water inlet temperature. The outlet water temperature sensor is arranged on the hot water outlet pipe and used for obtaining the hot water outlet temperature. The water flow sensor is arranged on the cold water inlet pipe or the hot water outlet pipe. And when the working thermal load is greater than the critical thermal load, a constant-current working mode is adopted, so that the device can better adapt to external wind pressure and has better wind pressure resistance. When the working heat load is smaller than the critical heat load, the constant-rotating-speed working mode is adopted, and it can be guaranteed that the rotating speed and the air volume of the gas water heater are constant under the condition that a non-flue is blocked or external natural wind exists. Once the external resistance is increased, good wind pressure resistance can be ensured by providing different rotating speeds at different stages.

Description

technical field [0001] The invention relates to the technical field of water heaters, in particular to a gas water heater and its control method and control device. Background technique [0002] In the traditional constant temperature gas water heater technology, in order to match the combustion air volume with the gas volume, DC adjustable speed fans are generally used. There are generally two control methods for air volume adjustment, constant current (also called constant power) control method and constant speed control method. [0003] For the constant current control method, because the voltage is generally constant, the power will also be constant, the output of the fan will generally not change, the speed can also be controlled very stably, and the air volume output is also stable. However, when the system resistance increases (flue blockage / In the case of external natural wind, etc.), the fan will actively accelerate and add air because it is in a constant current ...

Claims

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Application Information

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IPC IPC(8): F24H9/20F24H15/176F24H15/215F24H15/238F24H15/36
CPCF24H9/2035
Inventor 卢楚鹏张其陈斌
Owner GUANGDONG VANWARD NEW ELECTRIC CO LTD
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