Why does the vacuum hot water boiler make a buzzing sound during operation?

The steam creates the sound of bubbles. Is it big? ? When the boiler starts to run, the furnace is radiated and heated, and the water on the outer surface of the furnace boils in large quantities. It will make a sound that does not affect the operation. Generally, the sound is not loud. It can only be heard if you are nearby. After running for a while, the sound disappears.

This is not the sound, it refers to the sound coming from the steam condensation chamber...

Are your vacuum hot water boiler pot and furnace separate? ? Split type? If it is a split type, have you calculated the flow rate of steam from the pipe to the condensing type? It may be because the flow rate is high or there may be debris inside the condensing type. . sound of impact

No, it is integrated, but the steam space above is called the steam chamber. The steam condenses in the large space and does not enter the pipe. Inside the pipe is heated water....

Haha, it’s hard to say. You have to go to the site to know, and it’s not necessarily the sound coming from the steam chamber. If there are no impurities, there shouldn’t be that kind of sound in the steam chamber. Is it the sound coming from the high flow rate of the secondary water? . .

The secondary water flow rate is not high. Since there is no phase change, it should not cause any noise. The main reason is that the noise is louder when the cold furnace is started and disappears after running for a period of time. Is there any way to reduce or eliminate this noise? For example, is there any good hot start method?

The situation of this furnace is different. Furnaces in other places have noises, but they are within the customer's acceptance range. I personally checked this furnace and found that it was indeed a relatively loud vibration and noise. Even the normally open electric contact vacuum pressure gauge was shocked and closed during a cold start. In addition, it is understood that some other brands of vacuum furnaces also have noises, such as crackling noises and slight impact noises...but there is no such vibration... Because the sound basically starts when the burner is ignited. At this time, taking into account the water capacity and temperature (the lower the temperature, the more obvious the sound), and since it is a new furnace that has been installed for a few months, I personally tend to think that thermal expansion and contraction are the main factors...

It is more likely that there will be debris.