Composite window with plastic wrapping and wood and warm edge suitable for cold region
By employing multi-layered glass, U-PVC frames, and U-PVC sashes in plastic-coated wood composite windows, combined with sealing strips and chamber structures, the condensation problem of plastic-coated wood composite windows in cold regions has been solved, achieving both heat insulation at the glass edges and overall window durability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HARBIN GEYUN WINDOW IND CO LTD
- Filing Date
- 2025-02-20
- Publication Date
- 2026-05-29
AI Technical Summary
In cold regions, condensation frequently occurs on plastic-coated wood composite windows, affecting indoor lighting and surface aesthetics, and may lead to problems such as wood rot and mold. Existing technologies have not been able to effectively solve the condensation problem caused by temperature differences.
The design employs multi-layered glass, a U-PVC frame, and a U-PVC sash, combined with components such as inner sealing strips, transition sealing strips, outer sealing strips, and nylon clips to form a well-sealed window structure. The multiple chambers inside the U-PVC frame and U-PVC sash reduce heat transfer efficiency, lower the heat transfer coefficient at the glass edges, and reduce condensation.
It effectively prevents the problem of high heat transfer coefficient at the glass edge, improves the overall window insulation, reduces condensation, extends service life, and is suitable for cold and low-temperature environments.
Smart Images

Figure CN224300678U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of composite window technology, and more specifically to a warm-edge plastic-coated wood composite window adapted for cold regions. Background Technology
[0002] With the improvement of people's housing conditions, the use of doors and windows has increased significantly, and the requirements for doors and windows in terms of energy conservation and environmental protection are becoming increasingly stringent. Currently, my country builds nearly 2 billion square meters of new residential buildings annually. Based on a building area to window area ratio of 8:1, and excluding the replacement of old windows, the annual usage of windows alone in new residential buildings reaches 250 million square meters. Therefore, the amount of window materials used is staggering.
[0003] Furthermore, unstable performance of the windows during use, and even loss of performance in some areas, can increase the amount of window material used. Fieldwork staff, through on-site testing and analysis, have found that installation problems are the dominant factor, with the main installation drawbacks manifesting as follows:
[0004] 1. The lack of insulation around door and window openings results in a discontinuity in the building's external insulation, affecting the building's overall insulation system. Especially in extremely cold regions, this lack of insulation can easily create thermal bridges, causing condensation on walls and window frames.
[0005] 2. In wet installation, if the opening is not standard or the construction is incorrect, the gap between the window frame and the wall may be too small or even nonexistent, causing direct contact between the window frame and the wall and resulting in thermal bridging. In dry installation, if the gap between the steel subframe and the window frame is too small or the caulking is inadequate, the steel subframe may also be in direct contact with the aluminum alloy door and window frame, or the subframe may be exposed, forming thermal bridging and causing condensation.
[0006] 3. Improper hardware installation: When the doors and windows are closed, gaps may exist between the frame and the sash due to improper hardware installation, resulting in poor airtightness of the entire window and making it prone to condensation in extreme weather conditions.
[0007] 4. Improper assembly of glass spacers, such as missing or undersized glass spacers, can cause the glass to come into direct contact with the window frame, resulting in cold bridging and condensation on the glass.
[0008] 5. Improper sealing during glass installation: If there is not enough gap between the glass and the frame, the glass will come into direct contact with the outer frame, causing condensation.
[0009] 6. Inadequate assembly precision and improper sealing strip assembly can lead to condensation at locations where there is a significant temperature difference between indoors and outdoors.
[0010] In response, PVC-coated wood composite windows have been promoted for their combination of the natural beauty of wood and the excellent performance of plastic, which can improve condensation caused by improper installation. However, it has been found that condensation still occurs frequently when PVC-coated wood composite windows are used in cold regions. The impact of large temperature differences has not been addressed in a standardized manner, which not only affects indoor lighting and surface aesthetics, but also has a permeable impact on the internal structure, potentially leading to problems such as wood rot and mold, resulting in a reduced service life. All of the above reasons contribute to the frequent occurrence of condensation on the glass, and there is no standardized and effective anti-condensation treatment method for the glass of doors and windows in cold regions. Utility Model Content
[0011] The purpose of this invention is to provide a warm-edge plastic-coated wood composite window suitable for cold regions, which effectively prevents condensation and solves the problem of high heat transfer coefficient at the glass edge, thereby improving the overall window insulation.
[0012] The objective of this utility model is achieved through the following technical solution:
[0013] A warm-edge plastic-coated wood composite window suitable for cold regions includes a window sash, multi-layered glass, a window frame, an inner sealing strip, nylon clips, a U-PVC frame, a steel-frame, a transition sealing strip, an outer sealing strip, a U-PVC sash, a steel-sash, and an external aluminum sealing strip. The window sash contains multi-layered glass, which is connected to the window frame via an inter-frame sealing strip. The window frame and window sash are connected via the inner sealing strip, transition sealing strip, and outer sealing strip. The U-PVC sash is connected to the multi-layered glass via an external aluminum sealing strip. The window frame is connected to the U-PVC frame via two nylon clips and an outer sealing strip. A steel-frame is installed inside the U-PVC frame. The U-PVC sash is fixed to the U-PVC frame, and the steel-frame is housed within the U-PVC sash. Both the U-PVC frame and the U-PVC sash have multiple chambers inside, and are connected via sealing clips.
[0014] Furthermore, a warm-edge plastic-coated wood composite window adapted for cold regions also includes a thermal insulation sealing strip, wherein the thermal insulation sealing strip is provided between the multi-layer glass.
[0015] Furthermore, the window sash and the multi-layered glass are connected by a sealing strip between the window frames.
[0016] Furthermore, the window sash is equipped with a latching lock.
[0017] Furthermore, the U-PVC frame is provided with an outer cavity, a middle temperature barrier cavity and an inner cavity from left to right. A first connection forming cavity is provided between the U-PVC frame and the multilayer glass, and the steel liner-frame is provided in the middle temperature barrier cavity.
[0018] Furthermore, the U-PVC fan has, from left to right, an outer cavity of the fan frame, a middle cavity, an inner cavity, and a second connecting cavity. Both nylon buckles are connected to the second connecting cavity, and the steel liner-fan is disposed in the middle cavity.
[0019] Furthermore, the gap between the window sash and the window frame is less than or equal to 5mm, and the gap between the window sash and the window frame is greater than or equal to 3mm.
[0020] The beneficial effects of this utility model are as follows:
[0021] This utility model achieves a reduction in heat conduction at the circumferential edges of multi-layered glass through the coordinated interaction of the window sash, window frame, inner sealing strip, nylon buckle, U-PVC frame, steel-frame, transition sealing strip, outer sealing strip, U-PVC sash, steel-sash, and external aluminum sealing strip. This reduces the temperature difference between the edge of the multi-layered glass and the U-PVC frame, steel-frame, and U-PVC sash that are in direct or indirect contact with it, resulting in a warming effect on the multi-layered glass. It also reduces the probability of condensation caused by installation procedures and window structure, making it suitable for durable use in cold regions under low-temperature conditions. Specific advantages include:
[0022] 1. By incorporating multiple cavities within both the U-PVC frame and U-PVC sash, heat transfer efficiency is reduced, thus resolving the issue of poor insulation of the aluminum frame in aluminum-clad wood windows.
[0023] 2. Using a U-PVC frame reduces the heat transfer coefficient at the edges of multi-layer glass, acting as a warm edge for the glass. This improves the uniform insulation performance around the edges of the glass and reduces the likelihood of moisture buildup at the edges in cold regions, thus reducing condensation on doors and windows. It is suitable for continuous use in cold environments and enhances the uniform insulation performance of the edges of doors and windows in cold buildings under low-temperature conditions. Attached Figure Description
[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific implementation methods.
[0025] Figure 1 This is a schematic diagram of the structure of this utility model;
[0026] Figure 2 This is a schematic diagram of the overall structure of this utility model;
[0027] Figure 3 This is a structural schematic diagram of the U-PVC fan of this utility model;
[0028] Figure 4 This is a structural schematic diagram of the U-PVC frame of this utility model.
[0029] Figure 5This is a utility model Figure 1 A magnified view of part A.
[0030] Figure 6 This is a utility model Figure 1 A magnified view of section B.
[0031] In the diagram: Window sash 1; Multi-layered glass 3; Window frame 4; Inner sealing strip 5; Nylon buckle 6; U-PVC frame 7; Steel-lined frame 8; Transition sealing strip 9; Outer sealing strip 10; U-PVC sash 11; Steel-lined sash 12; External aluminum sealing strip 13; Thermal insulation sealing strip 14; Window frame inter-sash 15; Locking lock 2; Outer cavity 71; Middle layer temperature barrier cavity 72; Inner cavity 73; First connection forming cavity 74; Outer cavity 111, Middle cavity 112, Inner cavity 113; Second connection forming cavity 114; Sealing buckle 16. Detailed Implementation
[0032] Specific implementation method one: Combining Figure 1-4 This embodiment describes a warm-edge plastic-coated wood composite window suitable for cold regions, comprising a window sash 1, multi-layered glass 3, a window frame 4, an inner sealing strip 5, nylon clips 6, a U-PVC frame 7, a steel-frame 8, a transition sealing strip 9, an outer sealing strip 10, a U-PVC sash 11, a steel-sash 12, and an external aluminum sealing strip 13. The window sash 1 contains multi-layered glass 3, and the window sash 1 and the multi-layered glass 3 are connected by a window frame sealing strip 15. The window frame 4 is connected to the window sash 1 by the inner sealing strip 5, the transition sealing strip 9, and the outer sealing strip. 10 connection, U-PVC sash 11 is connected to multi-layer glass 3 through external aluminum sealing strip 13, window frame 4 is connected to U-PVC frame 7 through two nylon buckles 6 and external sealing strip 10, U-PVC frame 7 is provided with steel liner-frame 8 inside, U-PVC sash 11 is connected to U-PVC frame 7 through sealing buckle, steel liner-sash 12 is set in U-PVC sash 11, U-PVC frame 7 and U-PVC sash 11 are provided with multiple chambers inside, U-PVC frame 7 and U-PVC sash 11 are connected to each other through sealing buckle 16;
[0033] In cold regions, the large temperature difference between indoors and outdoors can cause water vapor to form droplets on the indoor layer near the multi-layered glass 3, which can then freeze and condense. Therefore, by using wood for both the window sash 1 and the window frame 4, combined with the U-PVC frame 7, the heat transfer coefficient at the edge of the multi-layered glass 3 is reduced, thus preventing condensation and increasing the lifespan of the window sash 1 and U-PVC frame 7. The indoor layer of this composite window, composed of the multi-layered glass 3, window sash 1, and window frame 4, forms a well-sealed window structure through the window sash 1 and window frame 4, along with the inner sealing strip 5, transition sealing strip 9, and outer sealing strip 10. This creates a well-sealed window edge structure that effectively insulates the space. Simultaneously, the outdoor layer of this composite window, composed of the U-PVC frame 7, U-PVC sash 11, and multi-layered glass 3, forms the outdoor layer. The U-PVC frame 7 and U-PVC sash 11, made of U-PVC material, are lighter than aluminum frames in aluminum-clad wood windows, reducing the overall weight of the window. Furthermore, the U-PVC frame reduces the heat transfer coefficient at the glass edges, acting as a warm edge and reducing condensation. The multiple cavities within both the U-PVC frame 7 and U-PVC sash 11 further reduce heat transfer efficiency. These cavities, with their hollow spaces, form a multi-composite internal structure, increasing the distance for heat transfer from the outside air. By using cavities instead of traditional alloys or wood, the heat transfer coefficient is reduced. The multiple cavities also decrease the efficiency of heat transfer from the outside air to the U-PVC frame 7 and U-PVC sash 11, enhancing the insulation effect of the composite window and reducing air convection within the profile.
[0034] Specific Implementation Method Two: This implementation method is a supplementary explanation to Specific Implementation Method One: (Combined with...) Figure 1-4 This embodiment describes a warm-edge plastic-coated wood composite window adapted for cold regions, which also includes a thermal insulation sealing strip 14. The thermal insulation sealing strip 14 is disposed between the multi-layer glass 3. The thermal insulation sealing strip 14 can ensure that a sealed space is formed between the multi-layer glass 3. The thermal insulation sealing strip 14 can also insulate the edges of the multi-layer glass 3, increase the thermal insulation effect of the multi-layer glass 3, and is more suitable for use in cold regions.
[0035] Specific implementation method three, this implementation method is a supplementary explanation to specific implementation method one or two: combined with Figure 1-4 In this embodiment, the window sash 1 and the multi-layer glass 3 are connected by a window frame sealing strip 15, which can prevent gas exchange between the window sash 1 and the multi-layer glass 3 and increase the heat preservation effect.
[0036] Specific implementation method four, this implementation method is a supplementary explanation to specific implementation methods one, two or three: combined with Figure 1-4This embodiment describes a window sash 1 equipped with a latching lock 2, which allows the composite window to be opened and closed as needed.
[0037] Specific implementation method five, this implementation method is a supplementary explanation to specific implementation methods one, two, three or four: combined with Figure 1-4 In this embodiment, the U-PVC frame 7 is provided with an outer cavity 71, a middle temperature barrier cavity 72, and an inner cavity 73 arranged sequentially from left to right. The steel liner-frame 8 is placed in the middle temperature barrier cavity 72, which can increase the strength of the middle temperature barrier cavity 72 and ensure the stability of the overall structure. The energy of heat transfer is reduced sequentially by the inner cavity 73, the middle temperature barrier cavity 72, and the outer cavity 71. The U-PVC frame 7 and the multilayer glass 3 form a first connection cavity 74, which serves both as an installation function and as a heat insulation effect. The heat insulation effect is formed by the formation of a sealed cavity after installation.
[0038] Specific implementation method six, this implementation method is a supplementary explanation to specific implementation methods one, two, three, four or five: combined with Figure 1-4 This embodiment describes a U-PVC sash 11 with, from left to right, an outer cavity 111, a middle cavity 112, and an inner cavity 113. Two nylon clips 6 are connected to a second connecting cavity 114, fastening the sash to the cavity. A steel-lined sash 12 is positioned within the middle cavity 112. The steel-lined sash 12 effectively enhances the support and structural strength of the U-PVC sash 11, ensuring a stable connection between the sash 11 and the window. Frame 4, through the outer cavity 111, middle cavity 112 and inner cavity 113 of the fan frame, isolates the outside air in sequence. The arrangement of the inner cavity 113, middle cavity 112 and outer cavity 111 of the fan frame can reduce the energy of heat transfer in sequence and enhance the heat preservation effect. The U-PVC fan 11 and U-PVC frame 7 are connected by sealing buckle 16, so that after the U-PVC frame 7 and U-PVC fan 11 are installed, they form a joint cavity, which can further reduce heat transfer and enhance the heat preservation effect.
[0039] Specific implementation method seven, this implementation method is a supplementary explanation to specific implementation methods one, two, three, four, five or six: combined with Figure 1-4 In this embodiment, the gap between the window sash 1 and the window frame 4 is less than or equal to 5mm, and the gap between the window sash 1 and the window frame 4 is greater than or equal to 3mm. After installing the inner sealing strip 5, the transition sealing strip 9 and the outer sealing strip 10, it is ensured that the gap between the window sash 1 and the window frame 4 will not leave a large area of space for contact with the external airflow, effectively avoiding the convection of internal and external gases and enhancing the heat preservation effect.
[0040] The working principle of this utility model is as follows:
[0041] The interior layer of this composite window is composed of multi-layered glass 3, window sash 1, and window frame 4. Combined with the window sash 1 and window frame 4, along with the inner sealing strip 5, transition sealing strip 9, and outer sealing strip 10, they form a well-sealed window structure, effectively providing insulation. The exterior layer consists of a U-PVC frame 7, U-PVC sash 11, and multi-layered glass 3. The U-PVC frame 7 and U-PVC sash 11, made of U-PVC material, are lighter than the aluminum frame of aluminum-clad wood windows, reducing the overall weight of the window. Furthermore, the use of U-PVC frame 7 and U-PVC sash 11 helps to reduce... The low heat transfer coefficient at the edge of the multi-layer glass 3 serves as the heat insulation of the multi-layer glass 3, thereby reducing condensation in doors and windows. The outer cavity 111, middle cavity 112, and inner cavity 113 of the sash frame are sequentially used to isolate the external air, forming a multi-cavity isolation structure. The arrangement of the inner cavity 113, middle cavity 112, and outer cavity 111 of the sash frame can sequentially reduce the energy of heat transfer and enhance the heat preservation effect. The U-PVC sash 11 and the U-PVC frame 7 are connected by a sealing buckle, so that after the U-PVC frame 7 and the U-PVC sash 11 are installed, they form a joint cavity, which can further reduce heat transfer and enhance the heat preservation effect.
Claims
1. A warm-edge plastic-coated wood composite window suitable for cold regions, characterized in that: The window sash (1) includes a multi-layered glass (3), a window frame (4), an inner sealing strip (5), a nylon clip (6), a U-PVC frame (7), a steel-framed frame (8), a transition sealing strip (9), an outer sealing strip (10), a U-PVC sash (11), a steel-framed sash (12), an external aluminum sealing strip (13), and a sealing clip (16). The window sash (1) contains multi-layered glass (3). The window sash (1) and the multi-layered glass (3) are connected by a window frame sealing strip (15). The window frame (4) and the window sash (1) are connected by an inner sealing strip (5), a transition sealing strip (9), and an outer sealing strip (10). The U-PVC fan (11) is connected to the multi-layer glass (3) by an external aluminum sealing strip (13). The window frame (4) is connected to the U-PVC frame (7) by two nylon buckles (6) and an outer sealing strip (10). The U-PVC frame (7) is equipped with a steel liner-frame (8). The U-PVC fan (11) is fixed to the U-PVC frame (7). The steel liner-fan (12) is set in the U-PVC fan (11). Both the U-PVC frame (7) and the U-PVC fan (11) are equipped with multiple chambers. The U-PVC frame (7) and the U-PVC fan (11) are connected by a sealing buckle (16).
2. The warm-edge plastic-coated wood composite window adapted for cold regions according to claim 1, characterized in that: It also includes a thermal insulation sealing strip (14), which is provided between the multi-layer glass (3).
3. The warm-edge plastic-coated wood composite window adapted for cold regions according to claim 1, characterized in that: The window sash (1) is equipped with a latching lock (2).
4. A warm-edge plastic-coated wood composite window adapted for cold regions according to claim 1, characterized in that: The U-PVC frame (7) is provided with an outer cavity (71), a middle temperature barrier cavity (72) and an inner cavity (73) from left to right. A first connection forming cavity (74) is provided between the U-PVC frame (7) and the multilayer glass (3). The steel liner-frame (8) is provided in the middle temperature barrier cavity (72).
5. A warm-edge plastic-coated wood composite window adapted for cold regions according to claim 1, characterized in that: The U-PVC fan (11) has, from left to right, an outer cavity (111), a middle cavity (112), an inner cavity (113), and a second connecting cavity (114). Two nylon buckles (6) are connected to the second connecting cavity (114), and the steel liner-fan (12) is set in the middle cavity (112).
6. A warm-edge plastic-coated wood composite window adapted for cold regions according to claim 5, characterized in that: The gap between the window sash (1) and the window frame (4) is less than or equal to 5 mm, and the gap between the window sash (1) and the window frame (4) is greater than or equal to 3 mm.