Low-energy-consumption waterproof door and window opening joint structure
By using waterstop strips, heat insulation pads, and waterproof and breathable membranes at the joints of door and window openings, the problems of water seepage and air tightness at door and window openings were solved, achieving more efficient waterproofing and heat insulation effects and improving the overall performance of the building.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI JIEZHU ARCHITECTURAL PLANNING & DESIGN CO LTD
- Filing Date
- 2025-07-21
- Publication Date
- 2026-06-16
AI Technical Summary
Existing ultra-low energy consumption door and window openings suffer from water seepage and insufficient air tightness, affecting the overall performance of the building.
Waterstop strips and heat insulation pads are pre-embedded at the joint between the window frame and the concrete wall. Combined with the specially designed bottom subframe of the window frame and the slope of the wall, and with the use of waterproof and breathable membranes and waterproof and air-tight membranes, an effective waterproof and heat-insulating structure is formed.
It effectively prevents water from seeping into the interior from the exterior walls, reduces heat exchange, improves the airtightness and thermal insulation performance of the building, reduces energy consumption, and extends the service life of the building envelope.
Smart Images
Figure CN224363814U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building door and window structure technology, specifically relating to a low-energy-consumption waterproof door and window opening node structure. Background Technology
[0002] In today's construction industry, the development of ultra-low energy buildings is of profound significance. It not only helps achieve substantial energy conservation and carbon reduction, improves environmental quality, and actively addresses climate change, but also effectively reduces building operation and maintenance costs, significantly improves indoor comfort, provides people with a healthy and high-quality living environment, and leads the construction industry in green and low-carbon technological innovation and industrial transformation and upgrading. However, existing ultra-low energy door and window openings have many problems. Water seepage is prone to occur at these openings, airtightness is difficult to meet requirements, and indoor thermal insulation becomes a weak point at these openings, affecting the overall building performance. Summary of the Invention
[0003] The purpose of this utility model is to provide a low-energy waterproof door and window opening node structure that is simple in structure and has good waterproof and heat insulation effects.
[0004] The low-energy door and window opening node structure provided by this utility model includes a concrete wall, window frame, waterstop strip, heat insulation pad, and exterior wall finish;
[0005] The concrete wall has a recessed notch on the outer wall side, and the notch has a bottom surface and a rear surface.
[0006] The bottom subframe of the window frame is set in the gap in the concrete wall;
[0007] Between the bottom surface of the bottom subframe of the window frame and the bottom surface of the notch, a waterstop strip and a heat insulation pad are tightly installed from the outside to the inside, and the heat insulation pad extends to the rear side of the bottom subframe of the window frame and the rear side of the notch.
[0008] One side of the inner wall of the concrete wall is covered with a layer of lightweight thermal insulation mortar.
[0009] An exterior wall finish layer is laid on the outer wall surface of the concrete wall, and the exterior wall finish layer covers the bottom subframe area of the window frame. A lightweight thermal insulation mortar layer is laid on the exterior wall finish layer.
[0010] In this invention, the contact surfaces between the lightweight thermal insulation mortar layer and the inner side of the concrete wall, and between the lightweight thermal insulation mortar layer and the inner side of the bottom subframe of the window frame, are all covered with a waterproof and air-tight membrane.
[0011] In this invention, a waterproof and breathable membrane is laid between the lightweight thermal insulation mortar layer and the exterior wall finish, and between the lightweight thermal insulation mortar layer and the outer side of the bottom subframe of the window frame.
[0012] In this invention, the bottom surface of the notch and the bottom surface (contact surface) of the bottom subframe of the window frame are inclined surfaces, with the lower side of the inclined surface located on the side closest to the outer wall; the formed inclined surface can ensure that water seepage from the outer wall cannot flow into the concrete wall.
[0013] Furthermore, the bottom surface of the notch is roughened by a chiseling process to form a coarse granular surface, which allows for better adhesion of the waterstop strip and the heat insulation gasket.
[0014] This invention involves pre-embedding water-stop strips and heat-insulating pads at the joints between window frames and walls, where leaks are more likely to occur. The water-stop strips effectively prevent water from the exterior wall from seeping into the room through the joint gaps during rainy days, while the heat-insulating pads prevent indoor air from exchanging heat through the joint gaps. Furthermore, the specially designed bottom subframe of the window frame and the beveled design of the wall further prevent water from flowing back into the wall.
[0015] The advantage of this invention lies in its simple structure, which can more effectively isolate moisture and heat between the inside and outside of the wall. Attached Figure Description
[0016] Figure 1 This is a cross-sectional view of the structure of this utility model.
[0017] The numbers in the diagram are as follows: 1 is the concrete wall, 2 is the bottom subframe of the window frame, 3 is the waterstop strip, 4 is the thermal insulation pad, 5 is the exterior wall finish, 6 is the lightweight thermal insulation mortar layer, 7 is the waterproof and breathable membrane, and 8 is the waterproof and air-tight membrane. Detailed Implementation
[0018] This utility model mainly includes a concrete wall 1, a window frame, a waterstop strip 3, a heat insulation pad 4, and an exterior wall finish 5;
[0019] The concrete wall 1 has a recessed notch on the outer wall side, and the notch has a bottom surface and a rear surface.
[0020] The window frame is made of aluminum alloy profile, and the bottom subframe 2 of the window frame is set in the gap of the concrete wall 1;
[0021] The bottom surface of the notch and the contact surface of the bottom subframe 2 are set as slopes, with the lower side of the slope located on the side closest to the outer wall; the slope formed can ensure that water seepage from the outer wall cannot flow into the concrete wall.
[0022] Between the bottom surface of the bottom subframe of the window frame and the bottom surface of the notch, a waterstop strip 3 and a heat insulation pad 4 are installed tightly from the outside of the wall inwards, and the heat insulation pad 4 extends to the rear side of the bottom subframe 2 of the window frame and the rear side of the notch; the waterstop strip 3 is 30mm long and 20mm thick; the heat insulation pad 4 is laid to cover the remaining area.
[0023] The bottom surface of the notch is roughened by a chiseling process to form a rough granular surface, which allows the waterstop strip 3 and the heat insulation gasket 4 to adhere better. At the same time, the uneven surface also provides a water-blocking effect.
[0024] One side of the inner wall of the concrete wall 1 is covered with a layer of lightweight thermal insulation mortar 6.
[0025] On the outer wall surface of the concrete wall 1, an outer wall finish layer 5 is laid, and the outer wall finish layer covers the bottom subframe 2 area of the window frame. A lightweight thermal insulation mortar layer is laid on the outer wall finish layer.
[0026] A waterproof and breathable membrane 7 is laid between the lightweight thermal insulation mortar layer 6 and the exterior wall finish 5, and between the lightweight thermal insulation mortar layer 6 and the outer side of the bottom subframe 2 of the window frame; a waterproof and air-tight membrane 8 is laid between the lightweight thermal insulation mortar layer 6 and the inner side of the concrete wall 1, and between the lightweight thermal insulation mortar layer 6 and the inner side of the bottom subframe 2 of the window frame; specifically as follows Figure 1 As shown.
[0027] The specific construction method of this utility model is as follows:
[0028] (1) When constructing concrete walls, leave recesses as required, clean the recesses thoroughly, and chisel out rough surfaces;
[0029] (2) Starting from one side of the outer wall of the recess, the waterstop strip and heat insulation pad are laid in sequence through the fixing process of applying glue, and then the bottom subframe of the window frame is fixed to the concrete wall with expansion anchors.
[0030] (3) Clean the dust in the bottom frame groove of the window frame, and then apply sealant to the bottom inner and outer sides of the window frame and the concrete wall surface according to the actual construction requirements. The sealant should be continuous, dense and without holes. Then apply a waterproof and breathable membrane. The outer wall surface of the concrete wall can be further coated with a layer of waterproof coating according to actual needs to ensure the waterproof effect. Then cover it with a layer of lightweight thermal insulation mortar. In the same way, apply a waterproof and air-tight membrane to the inner wall surface of the concrete wall. This is a routine construction operation.
[0031] (4) Apply crack-resistant mortar on the lightweight thermal insulation mortar layer, with an anti-crack mesh cloth inside, and finally complete the exterior wall finish according to the design requirements.
[0032] This invention involves pre-embedding water-stop strips and heat-insulating pads at the joints between window frames and walls, where leaks are more likely to occur. The water-stop strips effectively prevent water from the exterior wall from seeping into the room through the joint gaps during rainy days. The heat-insulating pads effectively block heat exchange between the concrete wall and the subframe, reducing heat loss. Furthermore, the specially designed bottom subframe of the window frame and the beveled design of the wall further prevent water from flowing back into the wall.
[0033] The advantages of this invention lie in its simple structure, which effectively prevents water vapor from entering the room, inhibits heat exchange, prevents condensation, reduces building energy consumption, and improves energy efficiency. It can also regulate the internal pressure balance of the building, ensure airtightness, reduce pressure on the building envelope (such as doors, windows, and exterior wall panels), and extend the service life of the building envelope.
[0034] Although the above methods are illustrated and described as a series of structures for the sake of simplicity, it should be understood and appreciated that these methods are not specifically limited, as some structures may occur in different orders and / or concurrently with other actions from those illustrated and described herein or not illustrated and described herein but which may be understood by those skilled in the art, according to one or more embodiments.
[0035] The prior description of this disclosure is provided to enable any person skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the general principles defined herein may be applied to other variations without departing from the spirit or scope of this disclosure. Therefore, this disclosure is not intended to be limited to the examples and designs described herein, but should be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A low-energy-consumption waterproof door and window opening joint structure, characterized in that, This includes concrete walls, window frames, waterstops, thermal insulation pads, and exterior wall finishes; The concrete wall has a recessed notch on the outer wall side, and the notch has a bottom surface and a rear surface. The bottom subframe of the window frame is set in the gap in the concrete wall; Between the bottom surface of the bottom subframe of the window frame and the bottom surface of the notch, a waterstop strip and a heat insulation pad are tightly installed from the outside to the inside, and the heat insulation pad extends to the rear side of the bottom subframe of the window frame and the rear side of the notch. One side of the inner wall of the concrete wall is covered with a layer of lightweight thermal insulation mortar. An exterior wall finish layer is laid on the outer wall surface of the concrete wall, and the exterior wall finish layer covers the bottom subframe area of the window frame. A lightweight thermal insulation mortar layer is laid on the exterior wall finish layer.
2. The low-energy-consumption waterproof door and window opening node structure as described in claim 1, characterized in that, Waterproof and air-tight membranes are laid on the contact surfaces between the lightweight thermal insulation mortar layer and the inner side of the concrete wall, and between the lightweight thermal insulation mortar layer and the inner side of the bottom subframe of the window frame.
3. The low-energy-consumption waterproof door and window opening node structure as described in claim 2, characterized in that, A waterproof and breathable membrane is laid between the lightweight thermal insulation mortar layer and the exterior wall finish, and between the lightweight thermal insulation mortar layer and the outer side of the bottom subframe of the window frame.
4. The low-energy-consumption waterproof door and window opening node structure as described in any one of claims 1 to 3, characterized in that, The bottom surface of the notch and the bottom surface of the bottom subframe of the window frame are sloped, with the lower side of the slope located on the side closest to the outer wall; the slope formed ensures that water seepage from the outer wall cannot flow into the concrete wall.
5. The low-energy-consumption waterproof door and window opening node structure as described in claim 4, characterized in that, The bottom surface of the notch is roughened into a granular surface by a chiseling process.