CN-122014089-A - Building window anti-seepage structure and construction method thereof

CN122014089ACN 122014089 ACN122014089 ACN 122014089ACN-122014089-A

Abstract

The invention discloses an anti-seepage structure of a building window, which comprises an auxiliary frame and a window frame, wherein a sealing layer is arranged between the window frame and the auxiliary frame, the sealing layer is rectangular and sleeved on the window frame, the window frame and the auxiliary frame are matched to extrude the sealing layer, a first rectangular cavity which faces the opening of the window frame is arranged on the auxiliary frame, a second rectangular cavity which faces the opening of the auxiliary frame is arranged at the position corresponding to the first rectangular cavity of the window frame, the first rectangular cavity and the second rectangular cavity jointly form a rectangular frame-shaped balance cavity, the balance cavity and the sealing layer are sequentially arranged from outside to inside, the balance cavity is arranged around the window frame, a microporous breathable film is fixedly arranged on the inner wall, close to the outside, of the balance cavity, and is rectangular, and the microporous breathable film spans and covers a seam between the window frame and the auxiliary frame. The invention has good sealing effect and can effectively prevent water from entering the window and the room.

Inventors

FU JINGBO
ZHANG DAPENG
Liu Lisihong

Assignees

中国一冶集团有限公司

Dates

Publication Date: 20260512
Application Date: 20260127

Claims (10)

1. Building window antiseep structure, its characterized in that, including pre-buried in wall body entrance to a cave attach the frame and with attach frame fixed connection's window frame, wherein: a sealing layer is arranged between the window frame and the auxiliary frame, the sealing layer is rectangular and sleeved on the window frame, and the window frame and the auxiliary frame are matched to squeeze the sealing layer; The novel window is characterized in that a first rectangular cavity which faces the opening of the window frame is arranged on the auxiliary frame, a second rectangular cavity which faces the opening of the auxiliary frame is arranged at the position of the window frame, which corresponds to the first rectangular cavity, the first rectangular cavity and the second rectangular cavity jointly form a rectangular frame-shaped balance cavity, the balance cavity and a sealing layer are sequentially arranged from outdoor to indoor, the balance cavity surrounds the window frame, a microporous breathable film is fixedly arranged on the inner wall, close to the outdoor, of the balance cavity, the microporous breathable film is rectangular, and spans and covers a seam between the window frame and the auxiliary frame.
2. The building window leakage preventing structure according to claim 1, wherein the auxiliary frame and the window frame are formed by welding a plurality of sectional materials; The balance chamber is close to the outdoor inner wall on fixed mounting have the magnetic sheet, the inner peripheral and the outer peripheral of one side that the micropore ventilated membrane is kept away from the outdoor are fixed with the absorption piece respectively, the magnetic sheet presss from both sides with the absorption piece cooperation micropore ventilated membrane, thereby will the micropore ventilated membrane is fixed on the balance chamber is close to the outdoor inner wall, wherein, the absorption piece is iron foil or soft magnetic stripe.
3. The construction window leakage prevention structure according to claim 1, further comprising an arc-shaped elastic scraper; the auxiliary frame and the window frame are formed by welding a plurality of sectional materials; The inner periphery and the outer periphery of the microporous breathable film are respectively fixed on the inner wall, close to the outside, of the balance chamber in a pasting mode; the outdoor one end fixed mounting that keeps away from of arc elasticity scraper blade is on balance cavity, the outdoor one end of being close to of arc elasticity scraper blade is the free end, the free end is used for pressing micropore ventilated membrane on balance cavity's inner wall and remove on micropore ventilated membrane when arc elasticity scraper blade produces elastic deformation to make micropore ventilated membrane paste on balance cavity, and the free end compresses tightly micropore ventilated membrane's edge after micropore ventilated membrane installs in place.
4. The building window leakage prevention structure according to claim 3, wherein the microporous breathable film is adhered to the inner wall of the balance chamber close to the outside through neutral silicone adhesive, and 100% stretching strength of the neutral silicone adhesive at 23 ℃ is 0.2-0.35 mpa.
5. The building window leakage prevention structure according to claim 1, wherein the microporous breathable film is made of expanded polytetrafluoroethylene, polypropylene or polyethylene, and has a pore size of 0.1-10 μm.
6. The building window leakage preventing structure according to claim 1, wherein the three sealing layers are an outer sealing layer, a middle sealing layer and an inner sealing layer in sequence, and the balance chamber, the outer sealing layer, the middle sealing layer and the inner sealing layer are arranged in sequence from outdoor to indoor directions; the auxiliary frame and/or the window frame are/is provided with an outer sealing layer installation groove, the auxiliary frame and/or the window frame are/is provided with a middle sealing layer installation groove, the auxiliary frame and/or the window frame are/is provided with an inner sealing layer installation groove, and the outer sealing layer, the middle sealing layer and the inner sealing layer are respectively installed in the outer sealing layer installation groove, the middle sealing layer installation groove and the inner sealing layer installation groove.
7. The building window leakage prevention structure according to claim 6, wherein the outer sealing layer is a water-swelling water stop adhesive tape, the middle sealing layer is an EPDM foam composite adhesive tape, and the inner sealing layer is a silica gel sealing strip.
8. The leakage preventing structure for building window according to claim 1, wherein polyurethane foam is filled between the auxiliary frame and the wall.
9. The building window leakage preventing structure according to claim 8, further comprising a polyurethane waterproof coating painted on the wall opening, wherein the polyurethane foam is provided on the polyurethane waterproof coating.
10. The construction method of the building window leakage prevention structure according to any one of claims 1 to 9, characterized by comprising the steps of: 1) Pre-embedding an auxiliary frame in a wall opening, and filling foaming polyurethane between the auxiliary frame and the wall for primary sealing and fixing; 2) Installing a sealing layer in a sealing layer installation groove preset on the auxiliary frame and/or the window frame; 3) Before the window frame enters the auxiliary frame, pre-adhering and fixing one side edge of the microporous breathable film on the inner wall, close to the outdoor side, of the first rectangular cavity or the second rectangular cavity; 4) The window frame is arranged in the auxiliary frame, the sealing layer is extruded to form a sealing barrier, the first rectangular cavity and the second rectangular cavity are in butt joint to form a balance cavity, and the microporous breathable film is fixed on the inner wall of the balance cavity close to the outside in a sticking or magnetic attraction mode; 5) And fixing the window frame and the auxiliary frame together.

Description

Building window anti-seepage structure and construction method thereof Technical Field The invention belongs to the field of building windows, and in particular relates to an anti-seepage structure of a building window and a construction method thereof. Background Along with the rapid development of modern building industrialization, the building door and window is used as an important component part of a building outer protective structure, and the performance quality of the building door and window directly influences the energy consumption, the comfort level and the service life of a building. In various performance indexes of the building doors and windows, water tightness and air tightness are key dimensions for measuring the quality of the windows. However, the problem of leakage (especially at the joints of the window frame and the wall body and at the joints of the window frame and the auxiliary frame) has long been a long-standing disease in the building industry, and seriously affects the use experience of users and the stability of building structures. At present, the anti-leakage treatment of building windows in the industry mainly adopts sealant, and the traditional installation mode mainly adopts single-layer or multi-layer silicone building sealant to seal the gap between the attached frame and the wall (or window frame) on the surface. This approach is typically passive waterproofing, the effectiveness of which is highly dependent on the continuity and bond strength of the glue line. However, in practical applications, the sealants are extremely susceptible to aging, embrittlement or peeling cracks in environments where they are exposed to intense ultraviolet radiation, severe seasonal temperature differences, and complex structural displacements for a long period of time. Once the sealant layer has tiny cracks, rainwater can enter the room under the siphon action, and the damage is often hidden, so that the repair difficulty is extremely high. In heavy storm rainy days, the outdoor side wind pressure rises rapidly, while the interior cavity or indoor side of the window is still in a relatively low pressure state. Because the joint of the window frame and the auxiliary frame inevitably has an assembling gap, a strong suction pump is formed by huge internal and external air pressure difference, and rainwater attached to the edge of the gap is forced to be pressed into and even sprayed into a room. In most existing window structures, the cavity formed between the window frame and the auxiliary frame exists only as a mounting allowance and is not subjected to strict pneumatic layout design. These cavities are often messy and non-coherent and become waterproof weak points, and when the external instantaneous outdoor side wind pressure increases dramatically, if the outdoor side joint of the window frame and the attached frame is not provided with sealant, or the sealant is aged and has cracks, rainwater is very easy to infiltrate into the room from the joint of the window frame and the attached frame, and leakage points are frequently generated. Disclosure of Invention Aiming at the defects or improvement demands of the prior art, the invention provides the anti-seepage structure of the building window and the construction method thereof, has good sealing effect and can effectively prevent water from entering the window and the room. In order to achieve the above object, according to one aspect of the present invention, there is provided an anti-leakage structure for a building window, comprising an auxiliary frame pre-buried in a wall opening, and a window frame fixedly connected to the auxiliary frame, wherein: a sealing layer is arranged between the window frame and the auxiliary frame, the sealing layer is rectangular and sleeved on the window frame, and the window frame and the auxiliary frame are matched to squeeze the sealing layer; The novel window is characterized in that a first rectangular cavity which faces the opening of the window frame is arranged on the auxiliary frame, a second rectangular cavity which faces the opening of the auxiliary frame is arranged at the position of the window frame, which corresponds to the first rectangular cavity, the first rectangular cavity and the second rectangular cavity jointly form a rectangular frame-shaped balance cavity, the balance cavity and a sealing layer are sequentially arranged from outdoor to indoor, the balance cavity surrounds the window frame, a microporous breathable film is fixedly arranged on the inner wall, close to the outdoor, of the balance cavity, the microporous breathable film is rectangular, and spans and covers a seam between the window frame and the auxiliary frame. Preferably, the auxiliary frame and the window frame are formed by welding a plurality of sectional materials; The balance chamber is close to the outdoor inner wall on fixed mounting have the magnetic sheet, the inner peripheral and the outer peripheral of