Gas hot water equipment

Abstract

The invention provides a gas hot water device, which includes a burner, a heat exchanger, a gas valve, a fan, and a controller. The controller is electrically connected to the burner to control the ignition and combustion of the burner, is electrically connected to the gas valve to control the opening of the gas valve by adjusting the working current of the gas valve, and is electrically connected to the fan to adjust the fan speed. The controller is configured to re-ignite after the burner fails to ignite within the limited range of the number of ignition times, and determine and adjust the speed of the fan according to the current number of ignition times. By igniting multiple times and adjusting the fan speed according to the current number of igniting times, it can resist the interference of headwind on combustion, so as to ensure that the equipment can work normally and ensure that users have a good experience.

Description

technical field [0001] The invention belongs to the field of combustion equipment, and in particular relates to the anti-adverse wind control of gas hot water equipment. Background technique [0002] Gas hot water equipment, such as a gas water heater, is usually equipped with a burner, a heat exchanger, a fan, a smoke collection hood, a controller and a piping system. The fan is used to deliver the air required for combustion to the burner, and the waste smoke generated by combustion is collected through the smoke collection hood and then discharged from the flue. There is usually a wind pressure switch in the equipment to ensure the normal operation of the fan, and it can trigger the gas shutdown in time when the smoke exhaust is not smooth, so as to ensure that the gas does not leak out, thereby protecting personal safety. For example, after the device is turned on, the fan runs first, and when the wind pressure switch detects a higher threshold, it indicates that the fa...

AI Technical Summary

Problems solved by technology

At this time, the wind poured in from the hood will instantly cause the smoke exhaust inside the equipment to be unsmooth, causing the value detected by the air pressure switch to be lower than the lower threshold, thereby outputting wrong signals and causing the control unit of the equipment to misoperate

Since the headwind is not a fault condition such as a blocked flue, misoperation of the device may bring users a poor user experience, such as the device suddenly stopping working when the user is taking a shower

In addition, equipment systems with wind pressure sensors are often more complex, and product prices and maintenance costs are higher

Images