A 90 system thermal insulation strip positive and negative pressure sealing structure

Abstract

This utility model relates to the field of door and window structure technology, specifically disclosing a 90-system thermal insulation strip positive and negative pressure sealing structure, including a thermal insulation strip structure, an interior side wall, and an interior side wall. The thermal insulation strip structure is a symmetrical closed-loop sealing structure, forming an effective indoor overlap layer on the interior side and an effective outdoor overlap layer on the exterior side, maintaining a closed-loop seal under both positive and negative pressure conditions. Overlapping component one interlocks with the exterior side wall; overlapping component two interlocks with the interior side wall. By adopting a symmetrical closed-loop sealing structure, an effective indoor overlap layer is formed on the interior side, and an effective outdoor overlap layer is formed on the exterior side. These two layers work together to form a closed-loop seal, maintaining an effective seal under both positive and negative pressure conditions. Regardless of changes in indoor and outdoor pressure, the closed-loop structure can effectively seal, solving the failure problem of traditional unidirectional seals. By improving sealing performance, the sound insulation and heat preservation of doors and windows are simultaneously improved, enhancing energy efficiency and comfort.

Description

Technical Field

[0001] This utility model relates to the field of door and window structure technology, and in particular to a positive and negative pressure sealing structure for a 90 system thermal insulation strip. Background Technology

[0002] Existing thermally broken aluminum windows mostly adopt a unidirectional equal pressure sealing structure on the outside side, which can only maintain a seal under a single pressure direction. When there are positive and negative pressure changes between the inside and outside (such as positive pressure inside and negative pressure outside, or vice versa), the seal is prone to failure, resulting in increased heat transfer, noise infiltration, and air leakage, which cannot meet the usage requirements of high-performance doors and windows.

[0003] Therefore, we propose a positive and negative pressure sealing structure for a 90 system thermal insulation strip. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] This utility model provides a positive and negative pressure sealing structure for a 90 system thermal insulation strip, which can solve the problems of air leakage and insufficient sealing performance. The specific solution is as follows: A 90-system thermal insulation strip positive and negative pressure sealing structure includes a thermal insulation strip structure, a chamber side wall, and an indoor side wall; the thermal insulation strip structure is a symmetrical closed-loop sealing structure, with an effective indoor overlap layer formed on the indoor side and an effective outdoor overlap layer formed on the outdoor side, which can maintain a closed-loop seal under both indoor and outdoor positive and negative pressure conditions. Overlap component one, wherein the overlap component one is interlocked with the outdoor side wall; Second overlapping component, which is interlocked with the interior side wall.

[0006] As a preferred embodiment of this utility model, the heat insulation strip structure is made of PA66 nylon heat insulation strip, and the two ends of the PA66 nylon heat insulation strip are respectively connected to the ends of overlapping member one and overlapping member two.

[0007] As a preferred technical solution of this utility model, the gaps at the connection between the outdoor sidewall and the indoor sidewall and the thermal insulation strip structure are all equipped with sealing strips; the sealing strips are EPDM rubber strips, and the strips have a concave-convex fit structure to enhance the sealing closed-loop stability under positive and negative pressure scenarios.

[0008] As a preferred technical solution of this utility model, the thermal break strip structure is applied to the joint sealing part of the profile of any one of the 90 system thermally broken aluminum casement windows, sliding windows or awning windows.

[0009] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects: Employing a symmetrical closed-loop sealing structure, an effective indoor overlap layer is formed on the indoor side, and an effective outdoor overlap layer is formed on the outdoor side. The two work together to form a sealed closed loop, maintaining an effective seal under both positive and negative pressure conditions indoors and outdoors. Regardless of changes in indoor and outdoor pressure, the closed-loop structure can effectively seal, solving the failure problem of traditional unidirectional seals. By improving the sealing performance, the sound insulation and heat preservation of doors and windows are simultaneously improved, enhancing their energy efficiency and comfort.

[0010] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0011] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the spacer structure of this utility model; Figure 3 This is a schematic diagram of the indoor and outdoor overlapping structure of this utility model; Figure 4 This is a schematic diagram of the structure of this utility model before the upgrade.

[0012] The reference numerals in the attached figures are as follows: 1. Thermal insulation strip structure; 2. Outdoor side wall; 3. Indoor side wall; 4. Overlap joint one; 5. Overlap joint two. Detailed Implementation

[0013] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and, together with the embodiments of the present invention, serve to illustrate the principles of the present invention.

[0014] See Figures 1-4This utility model provides a 90 system thermal insulation strip positive and negative pressure sealing structure, including thermal insulation strip structure 1, chamber side wall 2 and indoor side wall 3; thermal insulation strip structure 1 is a symmetrical closed-loop sealing structure, with an effective indoor overlap layer formed on the indoor side and an effective outdoor overlap layer formed on the outdoor side, which can maintain a closed-loop seal under both indoor and outdoor positive and negative pressure conditions.

[0015] Overlapping component 4 is interlocked with the outdoor side wall 2.

[0016] Overlapping part 25, which is interlocked with the interior side wall 3.

[0017] The thermal break strip structure 1 features a symmetrical closed-loop design: along the transverse cross-section of the door and window profile, its outline forms a closed loop, and with the centerline of the door and window as the axis of symmetry, the geometric dimensions and overlap depths on both sides are completely consistent. This symmetrical design ensures that the seals on both sides are subjected to balanced stress when the indoor and outdoor pressures change, avoiding seal failure caused by deformation on one side.

[0018] The pre-set groove at the end engages with the protruding buckle of the overlapping part, with an engagement depth of ≥3mm. Combined with hot melt adhesive, it achieves double fixation, ensuring that it will not loosen due to vibration or temperature deformation during long-term use.

[0019] The thermal insulation strip structure 1 uses PA66 nylon thermal insulation strip, and the two ends of the PA66 nylon thermal insulation strip are respectively connected to the ends of overlapping member 4 and overlapping member 5.

[0020] Sealing strips are provided at the joints between the outdoor sidewall 2 and the indoor sidewall 3 and the thermal insulation strip structure 1. The sealing strips are made of EPDM rubber and have a concave-convex fit structure to enhance the sealing closed-loop stability under positive and negative pressure scenarios.

[0021] Thermal break strip structure 1 is applied to the profile splicing and sealing parts of any of the 90 system thermally broken aluminum casement windows, sliding windows or awning windows. It is applied at the splicing of the sash frame. Thermal break strip structure 1 is arranged in a closed loop around the sash frame. Overlap 1 4 and overlap 2 5 are respectively fitted with the profiles of the window frame and window sash. The interlocking of the sealing strip is further strengthened by the pressure when the window sash is closed.

[0022] Integrated into the overlapping part of the upper and lower tracks and the window sash, the thermal insulation strip structure 1 is set parallel to the track direction, the overlapping part 4 is fixed on the track, and the overlapping part 5 moves with the window sash. During the sliding process, the concave and convex structure of the sealing strip always maintains contact, avoiding the dynamic sealing failure problem of traditional sliding windows. It is used for the profile sealing on the hinge side and the locking side. In view of the angle change when the window is opened, the concave and convex structure of the sealing strip is reserved with 1mm of movement margin to ensure that effective sealing is maintained in both the open and closed states.

[0023] It should be noted that the indoor pressure (higher than the outdoor pressure) pushes the indoor sidewall 3 to deform slightly towards the outside, causing the indoor overlapping layer of the second overlapping piece 5 to move closer to the thermal insulation strip structure 1, further compressing the concave and convex structure of the indoor side sealing strip and enhancing the sealing tightness; at the same time, the outdoor negative pressure is transmitted to the first overlapping piece 4 through the outdoor sidewall 2, causing the outdoor overlapping layer to be "adsorbed" towards the thermal insulation strip structure 1, and the concave and convex structure of the outdoor side sealing strip simultaneously interlocks to form a two-way seal.

[0024] The positive pressure outdoors pushes the outdoor sidewall 2 to deform slightly towards the interior, and the outdoor overlapping layer of the first overlapping piece 4 squeezes the thermal insulation strip structure 1, resulting in a tight fit between the outdoor side adhesive strip and the concave-convex structure. Conversely, the negative pressure indoors pulls the indoor sidewall 3 to deform slightly towards the interior, and the indoor overlapping layer of the second overlapping piece 5 fits tightly against the thermal insulation strip structure 1, simultaneously sealing the indoor side adhesive strip. At this point, the closed-loop structure maintains the stability of the sealing layer through the "mutual balance" of pressure on both sides, preventing the adhesive strip from detaching or gaps from forming due to excessive force on one side. Because the PA66 material of the thermal insulation strip structure 1 matches the linear expansion coefficient of the aluminum profile, the overall deformation is uniform when the temperature changes. Combined with the elastic compensation of the sealing strip, it can adapt to minute dimensional changes, ensuring that the concave-convex fit structure always maintains an effective seal.

[0025] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0026] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the present application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0027] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0028] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A positive and negative pressure sealing structure for a 90-system thermal insulation strip, characterized in that: It includes a thermal insulation strip structure (1), a room side wall (2), and an indoor side wall (3); the thermal insulation strip structure (1) is a symmetrical closed-loop sealing structure, forming an effective indoor overlap layer on the indoor side and an effective outdoor overlap layer on the outdoor side, which can maintain a closed-loop seal under both indoor and outdoor positive and negative pressure conditions; Overlapping component 1 (4), which is fitted into the outdoor side wall (2); Overlapping component two (5), which is fitted into the interior side wall (3).

2. The positive and negative pressure sealing structure of the 90 system thermal insulation strip as described in claim 1, characterized in that: The heat insulation strip structure (1) is made of PA66 nylon heat insulation strip, and the two ends of the PA66 nylon heat insulation strip are respectively connected to the ends of the first overlapping member (4) and the second overlapping member (5).

3. The positive and negative pressure sealing structure of the 90 system thermal insulation strip as described in claim 2, characterized in that: Sealing strips are provided at the joints between the outdoor sidewall (2), the indoor sidewall (3), and the thermal insulation strip structure (1); the sealing strips are EPDM rubber strips, and the strips have a concave-convex fit structure to enhance the sealing closed-loop stability under positive and negative pressure scenarios.

4. The positive and negative pressure sealing structure of the 90 system thermal insulation strip as described in claim 1, characterized in that: The thermal break strip structure (1) is applied to the profile splicing and sealing parts of any of the 90 system thermally broken aluminum casement windows, sliding windows or awning windows.

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