【 Building materials network 】 doors and windows Just like the flood embankment, it can keep water tight. The secret lies in the cutting accuracy of aluminum, expansion angle, sealant strip drainage system The design of equal pressure chamber and 18 delivery procedures ensure the absolute airtightness of indoor space. door window Water tightness is closely related to water tightness. Watertightness is one of the important properties of doors and windows, and is also the most important one of the performance indicators of doors and windows.

The picture shows the window leaking into the room in rainy season Now, Ou Fulai, a small editor, will take you to understand the design of the isobaric chamber, which is one of the important ways to make doors and windows watertight. Many people think, what is the design of the isobaric chamber, and what is the relationship between the leakage of doors and windows and the design of the isobaric chamber?

What is an isobaric chamber ？

Even if the airtightness of doors and windows is good enough during installation, the exposed sealant strips and profiles will also be aged and deformed after a long time of wind, rain and sun exposure, which will lead to poor air and water tightness. Slight water seepage may occur in rainy days. Before the water enters the room, the rainwater must be led out of the window quickly. In rainy and windy days, due to the effect of wind, the surface of doors and windows will be subject to positive pressure, forming a pressure difference. When the pressure difference is greater than the gravity of the rain itself, the rain cannot be discharged out of the window. The function of the isobaric chamber is to balance the indoor and outdoor pressure and remove the pressure difference. So that the rain does not need to overcome the resistance of the wind, and it can be smoothly discharged out of the window by its own gravity. In fact, the reason is very simple. They have all fought in bars. what? No, Have you ever seen someone else make a bar? Guess, who will win?

The answer is the one on the right. Because on the left The wine bottle The angle is too high, and the bottle mouth is blocked by wine. With the decrease of wine, the volume inside the bottle becomes larger and the pressure becomes smaller. The pressure difference inside and outside the bottle will prevent the wine from flowing into the mouth. The wine bottle on the right is slightly tilted, and the mouth of the bottle is not blocked. The pressure inside and outside the bottle is the same, so there is no pressure barrier, so the wine will flow smoothly.

Isobaric principle of doors and windows?

Whether the drainage of doors and windows is good, reasonable design is the prerequisite, and a systematic, complete and reliable independent area drainage channel is closed key 。 To understand this, we first need to understand the basic structure of the system doors and windows (see the figure below).

The door and window watertight and airtight systems are located on both sides of the room and the outside: a watertight chamber is formed outdoors, a airtight chamber is formed indoors, and an isobaric chamber is formed by the middle isotherm, which is communicated with the outside through the exhaust hole to achieve isobaric. The following figure can help us better understand the isobaric principle: the bagged milk on the right has a large flow and high speed, because there is no pressure difference between the inside and outside of the milk package after the upper end is opened, forming an isobaric state.

The drainage channel design of system doors and windows also uses this principle. In rainy days: 1. When the air pressure in the isobaric chamber is greater than or equal to the outdoor, the accumulated water will be quickly discharged to the outdoor through the drainage hole; 2. When the air pressure in the isobaric chamber is less than that outside, the rainwater discharge is blocked, and the accumulated water remains; 3. When the accumulated water rises to the gap of the inner sealing belt, the isobaric chamber function fails, and the watertight performance of the window also fails. The drainage performance of system doors and windows is closely related to the sealing system. Only by doing a good job in the design of watertight, airtight and drainage channels, can we truly solve the drainage problem of doors and windows.

Every door and window is the beginning of a better life; Behind the door and window products are the persistence and persistence of our Oufulai door and window craftsmen, and also the interpretation of quality life. Choose doors and windows, choose safety and choose brands: With careful door and window brands, Ofellai doors and windows naturally make you feel secure in choosing, buying and using.