Fireproof top-hung window
By employing a stepped sealing structure and double-layer fireproof glass combined with expanded graphite rods in top-hung windows, the problems of insufficient sealing performance and poor fire resistance and heat insulation performance of traditional top-hung windows are solved, achieving better sealing and fire resistance performance, delaying the spread of fire, and ensuring the integrity of the glass.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU HAOHONG ENERGY SAVING TECH CO LTD
- Filing Date
- 2025-04-16
- Publication Date
- 2026-04-17
AI Technical Summary
Traditionally, awning windows are not effective at preventing smoke and flames from entering due to their sealing structure, and ordinary glass is difficult to withstand the high temperatures of a fire, resulting in insufficient fire resistance and heat insulation performance.
It adopts a stepped sealing structure, including an outer-to-inward sealing strip and an inner-to-outward sealing strip, combined with double-layer fireproof glass and expanded graphite rods, to form a multi-layer sealing and heat insulation system, enhancing sealing performance and fire resistance.
It significantly improves sealing performance, prevents smoke and flame intrusion, reduces heat conduction, slows the spread of fire, maintains glass integrity, enhances fire resistance and heat insulation performance, and extends escape time.
Smart Images
Figure CN224134521U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of doors and windows, specifically to a fire-resistant top-hung window. Background Technology
[0002] Traditionally, the design and application of top-hung windows often employ a single sealing strip in their sealing structure, which is ineffective in preventing the intrusion of smoke and flames. Regarding fire resistance and heat insulation performance, the glass used is mostly ordinary glass or simple double-glazed glass, which is insufficient to withstand the high temperatures of a fire. Utility Model Content
[0003] In view of the above, the purpose of this utility model is to provide a fire-resistant top-hung window to address the problems of the prior art.
[0004] A fire-resistant top-hung window in this solution includes an outer frame and a top-hung window body connected to the outer frame. A stepped sealing structure is formed between the outer frame and the top-hung window body, which includes a first sealing structure and a second sealing structure. The first sealing structure includes an inward sealing strip disposed on the outside of the top-hung window body, which forms a sealing fit with the outer side of the outer frame. The second sealing structure includes an outward sealing strip disposed on the inside of the outer frame, which forms a sealing fit with the inner side of the top-hung window body.
[0005] Furthermore, several cavities are formed within the outer frame and the upper window body, and expanded graphite rods are placed inside the cavities.
[0006] Furthermore, the top-hung window body is provided with a glass mounting groove, in which double-layer fireproof glass is embedded, and a pressure plate is provided to fix the double-layer fireproof glass; the double-layer fireproof glass includes three glass panes spaced apart and two air cavities between the three glass panes.
[0007] Furthermore, both the inward and outward sealing strips are EPDM rubber strips.
[0008] Compared with existing technologies, the fire-resistant top-hung window of this application has the following advantages:
[0009] Better sealing performance: This application constructs a stepped sealing structure, including a first sealing structure (an inward sealing strip is installed on the outside of the top-hung window body) and a second sealing structure (an outward sealing strip is installed on the inside of the outer frame). The two work together to significantly improve the sealing performance of the doors and windows, effectively preventing the intrusion of external air, rainwater, smoke and flames, and also reducing heat conduction.
[0010] Superior Fire Resistance and Thermal Insulation: The double-glazed fireproof glass in this top-hung window consists of three spaced-apart panes of glass and two air cavities. Compared to traditional double-glazed windows, this design further enhances the glass's fire resistance and thermal insulation, maintaining its integrity for extended periods and preventing fire spread due to glass breakage. Simultaneously, the expanded graphite rods placed within the outer frame and the internal cavities of the top-hung window rapidly expand to form a dense carbonaceous foam layer under high fire temperatures. This effectively insulates against heat, blocks flames and smoke, significantly improving the fire resistance of the top-hung window and slowing the spread of fire. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of this application;
[0012] Figure 2 For along Figure 1 Cross-sectional view of line AA in the middle;
[0013] Figure 3 For along Figure 1 Cross-sectional view of the middle BB line;
[0014] Reference numerals: 1. Outer frame; 2. Top-hung window body; 3. Inward sealing strip; 4. Outward sealing strip; 5. Expanded graphite rod; 6. Glass mounting groove; 7. Double-glazed fireproof glass; 8. Sealing plate. Detailed Implementation
[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0016] Reference Figures 1 to 3 The fire-resistant top-hung window shown includes an outer frame 1 and a top-hung window body 2. A stepped sealing structure is constructed between the outer frame 1 and the top-hung window body 2. This structure includes a first sealing structure and a second sealing structure. The two work together to significantly improve the sealing and fire resistance performance of the window.
[0017] First sealing structure: An inward sealing strip 3 is installed on the outside of the top-hung window body 2. This strip can tightly fit the outer side of the outer frame 1, forming the first sealing barrier. When the door and window are closed, the inward sealing strip 3 can effectively prevent outside air, rainwater, and smoke and flames in the event of a fire from entering the room. At the same time, its sealing performance helps to reduce heat conduction and enhance the fire resistance of the door and window.
[0018] The second sealing structure involves installing an outward-facing sealing strip 4 on the inner side of the outer frame 1. This strip precisely matches the inner side of the top-hung window body 2, forming a second line of defense. This second sealing structure further enhances the sealing effect of the doors and windows, preventing fire from spreading through gaps in the doors and windows. It also effectively blocks heat from being transferred into the room, giving people more time to escape.
[0019] In addition, both the outer frame 1 and the top-hung window body 2 are composed of aluminum alloy profiles, forming several cavities inside which expandable graphite rods 5 are placed. Expandable graphite rods 5, as a highly efficient fire-resistant material, are stable at room temperature, but when exposed to the high temperatures of a fire, they rapidly expand to form a dense carbonaceous foam layer. This foam layer not only effectively insulates against heat but also blocks flames and smoke, greatly improving the fire resistance of the top-hung window and slowing the spread of fire.
[0020] The top-hung window body 2 is equipped with a dedicated glass mounting groove 6, in which double-layer fire-resistant glass 7 is embedded and securely fixed by a clamping plate 8. The double-layer fire-resistant glass 7 consists of three spaced-apart panes of glass and two air chambers located between the three panes. This combination of three panes of glass further enhances the fire resistance and heat insulation performance of the glass compared to traditional double-layer glass. The two air chambers, acting as excellent heat insulation media, effectively reduce heat conduction and maintain the integrity of the glass for a long time during a fire, preventing the glass from breaking and causing the fire to spread. They also provide sound insulation and noise reduction, improving the comfort of the living environment.
[0021] Finally, it should be noted that both the inward sealing strip 3 and the outward sealing strip 4 are made of EPDM rubber. EPDM rubber has excellent weather resistance, aging resistance, and chemical stability, while the added flame-retardant components give it good flame-retardant properties. In a fire environment, the EPDM rubber strip can maintain its structural stability and continue to perform its sealing function, without melting or burning rapidly due to high temperatures, thus ensuring the effectiveness of the stepped sealing structure.
[0022] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A fire resistant top-hung window comprising an outer frame (1) and a top-hung window body (2) connected to the outer frame (1), characterized in that: A stepped sealing structure is formed between the outer frame (1) and the upper-hung window body (2), which includes a first sealing structure and a second sealing structure. The first sealing structure includes an inward sealing strip (3) disposed on the outside of the upper-hung window body (2), which forms a sealing fit with the outer side of the outer frame (1). The second sealing structure includes an outward sealing strip (4) disposed on the inside of the outer frame (1), which forms a sealing fit with the inside of the upper-hung window body (2).
2. A fire resistant top-hung window according to claim 1, characterised in that: Several cavities are formed inside the outer frame (1) and the upper window body (2), and an expanded graphite rod (5) is placed inside the cavity.
3. A fire resistant top-hung window according to claim 2, wherein: The top-hung window body (2) is provided with a glass mounting groove (6), and a double-layer fireproof glass (7) is embedded in the glass mounting groove (6), and a pressure plate (8) is provided to fix the double-layer fireproof glass (7); the double-layer fireproof glass (7) includes three glass pieces spaced apart and two air cavities between the three glass pieces.
4. The fire resistant top-hung window of claim 1, wherein: Both the inward sealing strip (3) and the outward sealing strip (4) are EPDM rubber strips.