How to buy gas water heaters

The use of gas water heaters is not limited by seasons and electricity consumption. It is relatively easy to use. Many ordinary households use gas water heaters. How is the working principle of gas water heaters? Many people are curious about how it works. When buying a water heater, I don’t know how to buy it. How to buy a gas water heater?

First, the working principle of gas water heater

1. The cold water enters the water heater, and flows through the water-gas linkage valve body to push the water-gas linkage valve under the action of a certain pressure difference of the flowing water, and simultaneously pushes the DC power micro-switch to turn on the power and start the pulse igniter, and At the same time, the gas transmission electromagnetic valve is opened, and the ignition is continued automatically by the pulse igniter until the ignition successfully enters the normal working state, and it takes about 10 seconds in this process.

2. When the gas water heater has a shortage of water or insufficient water pressure, lack of electricity, lack of gas, hot water temperature, accidental blowout, etc. during the working process or ignition process, the pulse igniter will pass the signal of the feedback of the induction needle. When the power supply is cut off automatically, the gas supply solenoid valve is returned to the original normally closed valve state immediately, that is, the gas passage has been cut off and the gas water heater is turned off.

3. When the gas water heater is working, open the gas main valve, open the gas regulating valve, the gas enters the two chambers A and B of the air pressure difference valve; open the tap water main valve, the cold water enters the water pressure difference valve through the tap water main valve all the way, another way Flow to the heat exchanger, because the water pressure on both sides of the rubber film is not equal, the differential pressure film moves toward the base, and the water-gas linkage ejector moves to the left. The lever in the middle of the ejector pin pushes the power switch to the left with the ejector lever to make the power supply .

4. Immediately after the electric controller is energized, a high-voltage electric pulse spark is generated, and at the same time, the micro-electromagnetic valve 1 is energized, the gas enters the small-fired burner from the valve, and the electric spark ignites a small fire. When the water-gas linkage ejector moves to the left in position, the gas valve 1 is opened, and at this time, since the gas valve 2 is not opened, the gas does not enter the main burner.

5. The induction needle is heated by a small fire and feels the role of small fire flame ion conduction. The signal is fed to the electric controller to supply power to the micro solenoid valve 2, and the valve is closed. The gas from the total air valve no longer flows to the A chamber, and the gas continuously enters the B chamber. When the pressure of the chamber B is greater than the pressure of the chamber A, the rubber membrane is pressed against the chamber A by the pressure difference between the two sides, and the connecting rod on the rubber membrane With the movement to the A chamber, the gas valve 2 is opened, the gas is sent to the main burner through the C chamber and the D chamber, and is ignited by a small fire to form a large fire. The high temperature flue gas of the flame rapidly heats the cold water flowing through the heat exchanger to produce a continuous Hot water, the water heater enters normal working condition. The remaining gas in Room A causes the small fire to burn out and extinguish itself. By adjusting the size of the gas regulating valve and the opening of the water valve, it is possible to obtain the required temperature at the time of use.

Second, how to buy gas water heaters

1. Water heaters are divided into artificial gas and liquefied petroleum gas according to the characteristics of gas. Three types of water heaters should be selected according to the type of gas used in their own homes. Otherwise, it will cause abnormal combustion, destroy the internal structure of the water heater, and communicate with customer service when purchasing. , figure out and then make a purchase.

2, look at the capacity of gas water heaters, the general number of 8 liters, 10 liters or more liters of water heaters refers to the amount of water per liter of water when the water temperature and water temperature rise by 25 ° C. So isn't the higher the number, the better? This depends mainly on what you need. The average shower is 8 liters - 10 liters. If you need to wash the surf bath and soak the bathtub, you should choose more than 10 liters.

3, more understanding of the gas water heater brand, and a good way to understand a machine is to look at their comments and the history of this brand. The long-established description of technology has not passed away in the economic tide, so the quality problems can be solved quickly in the later period, and there is no need to fear that the things bought will be repaired.

4, to determine the location of the gas water heater installation, if installed in a relatively closed bathroom, should choose a forced water heater; if installed in the kitchen and other air circulation better space, you can choose a forced exhaust water heater; To reduce the indoor space occupation, and choose to install outside the balcony, you can choose an outdoor water heater.

The working principle of the gas water heater is as above. When purchasing the gas water heater, you can check how it works. Learn more about its operation process. How to buy a gas water heater? Buying a gas water heater should put safety first, so it is recommended that you choose a well-known big brand to ensure the safety of the water heater.