Device and method for testing air permeability of external window of building
A technology of air infiltration and testing equipment, which is applied in the direction of liquid tightness measurement using liquid/vacuum degree, and detecting the appearance of fluid at the leakage point, etc., which can solve the problems of inability to reflect the air infiltration of the outer window, low detection accuracy, and operation Difficulty and other problems, to achieve the effect of easy disassembly and adjustment, high test accuracy and convenient operation
Pending Publication Date: 2022-03-22
SOUTHEAST UNIV
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Problems solved by technology
[0002] In the current laboratory and on-site testing of the air infiltration of external windows of buildings, the differential pressure method is often used for testing. A pressure chamber is built for laboratory measurement, and a pressurized space is constructed by sealing plastic film for on-site testing. Both test conditions are within the standard It is carried out under the specified pressure difference of 100Pa, which cannot reflect the air penetration of the outer window under the natural pressure difference
And when the air penetration of the outer window is measured in the laboratory, it is mostly used for the air tightness grading test of the outer window before leaving the factory. At this time, the outer window has not been put into use. There is a certain gap with the factory, so the existing laboratory building external window air infiltration test device cannot reflect the actual air infiltration of the external window in operation
The external window air infiltration field test device can reflect the actual air infiltration of the external window in use, but the operation is difficult. The main operation difficulty is to fix the sealing plastic film to ensure the airtightness of the pressurized space
In addition, when testing the airtightness of the outer window on site, in order to check the airtightness of the sealed plastic film, a smoke generator is generally used to observe the smoke disturbance with the naked eye to judge whether the plastic film is completely airtight, and the detection accuracy is low
Therefore, although the existing building exterior window air penetration test is divided into two test methods according to different applicable working conditions, both methods have certain limitations
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.
[0021] An air penetration test device for building exterior windows, the test device comprising:
[0022] Set up simulation room and constant pressure chamber;
[0023] Such as figure 1 As shown, the No. 1 gas concentration test instrument, the No. 2 gas concentration test instrument, the No. 4 gas concentration test instrument, and the No. 5 gas concentration test instrument in the simulation room are 1m above the ground and 0.5m from the wall. Among them, three ...
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The invention discloses a device and a method for testing the air permeability of an external window of a building, and relates to the technical field of air tightness detection equipment. The constant-pressure cabin is provided with a cabin door, a fan with an anemograph and a micro differential pressure sensor, a wireless control type tracer gas releaser, a gas concentration testing instrument, a data acquisition instrument and an intelligent circulating fan are arranged in the simulation room, and a window opening is formed in a middle partition wall between the constant-pressure cabin and the simulation room. A glass sealing plate with an electric slide rail and a sleeve cap type air volume meter are arranged at the air outlet of the wall hole of the simulation room; the constant-pressure cabin, the inner side of the simulation room and the window position of the simulation room are subjected to breakpoint-free plastering treatment. According to the testing device, the external window air permeation amount can be measured through two methods at the same time, results of the two methods are mutually verified, and the testing accuracy is effectively improved; and compared with the traditional smoke pen detection method, the air tightness detection before the test is more scientific and convenient, and the operability is strong.
Description
technical field [0001] The invention belongs to the technical field of air tightness testing equipment, and in particular relates to a testing device and testing method for air penetration of building exterior windows. Background technique [0002] In the current laboratory and on-site testing of the air infiltration of external windows of buildings, the differential pressure method is often used for testing. A pressure chamber is built for laboratory measurement, and a pressurized space is constructed by sealing plastic film for on-site testing. Both test conditions are within the standard It is carried out under the specified pressure difference of 100Pa, which cannot reflect the air penetration of the outer window under the natural pressure difference. And when the air penetration of the outer window is measured in the laboratory, it is mostly used for the air tightness grading test of the outer window before leaving the factory. At this time, the outer window has not bee...
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Login to View More IPC IPC(8): G01M3/20
CPCG01M3/20
Inventor 金星汪安楠张赟张嵩张旭
Owner SOUTHEAST UNIV