A kind of thermal insulation aluminum alloy door and window and preparation method thereof

Abstract

The invention discloses a thermal insulation aluminum alloy door and window and a preparation method thereof, and belongs to the field of thermal insulation doors and windows. The thermal insulation aluminum alloy door and window comprises two aluminum alloy profiles arranged opposite to each other, and two thermal insulation strips arranged between the two aluminum alloy profiles, and an aerogel felt or an aerogel plate is tightly arranged between the two thermal insulation strips. A U-shaped lining paper is arranged on the outside of the aerogel felt or the aerogel plate. A polyurethane foam is arranged between the aerogel felt or the aerogel plate and the U-shaped lining paper. The thermal insulation aluminum alloy door and window of the invention not only utilizes the characteristics of excellent thermal insulation performance, light weight, and good flame retardant effect of aerogel materials, but also greatly reduces the heat transfer coefficient of aluminum alloy doors and windows, reduces the weight of aluminum alloy doors and windows, improves the thermal insulation performance, sound insulation performance, and flame retardant performance of aluminum alloy doors and windows, and reduces the requirements for door and window hardware. It can also simply and conveniently realize the compounding of aerogel felt or aerogel plate with aluminum alloy profiles, is simple to manufacture, low in cost, and greatly improves the overall performance of the entire window.

Description

Technical Field

[0001] The invention relates to the technical field of thermal insulation doors and windows, and in particular to a thermal insulation aluminum alloy door and window and a preparation method thereof. Background Art

[0002] Aluminum alloy door and window profiles are made by extruding heated aluminum ingots through a predetermined mold into the required aluminum profiles. The aluminum profiles and nylon insulation strips are compounded together to form various aluminum alloy profile frames, sashes, muntins and other profiles, which are combined into thermal insulation aluminum alloy doors and windows. Figure 1 As shown, an aluminum alloy profile 1 is combined with a nylon insulation strip 2, and the purpose of heat preservation and insulation is achieved by utilizing the difference in heat transfer coefficients between the nylon strip and the aluminum alloy profile.

[0003] However, as the world's requirements for building energy conservation increase, the existing thermal insulation aluminum alloy doors and windows can no longer meet the requirements for further reducing the heat transfer coefficient of the entire window. In the prior art, polyurethane materials with low heat transfer coefficients are compounded between aluminum alloy profiles to further improve the thermal insulation performance of the entire aluminum alloy doors and windows. Figure 2 As shown, aluminum alloy profile 1 and foamed polyurethane 3 are used to compound, and the low heat transfer coefficient of polyurethane is used to achieve the purpose of heat insulation. However, polyurethane materials have high density and weight. To meet the national energy-saving standards, polyurethane needs to have a large density, or the size of the polyurethane profile is large, which greatly increases the weight of aluminum alloy doors and windows, or greatly increases the thickness of aluminum alloy doors and windows, thereby greatly increasing the requirements for window sash hardware, and the cost remains high. It is difficult for the market to accept it, which is not conducive to extensive promotion. Moreover, when polyurethane materials are used to compound aluminum alloy profiles, the aluminum alloy profiles must be an integral structure, so that different indoor and outdoor colors of polyurethane composite profile aluminum alloy windows cannot be set. Also, because the polyurethane material is very hard after curing, the curved aluminum alloy window structure cannot be realized. Therefore, there are still many problems in the existing doors and windows using polyurethane composite aluminum alloy profiles.

[0004] It can be seen that the above existing aluminum alloy doors and windows still have inconveniences and defects in structure, method and use, and are in urgent need of further improvement. How to create a new thermal insulation aluminum alloy door and window and its preparation method, so that it can ensure the thermal insulation performance while being light in weight and small in size, and improving the strength, surface accuracy, sound insulation and corrosion resistance of the door and window, has become a goal that the industry urgently needs to improve. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a thermal insulation aluminum alloy door and window, which is light in weight and small in size while ensuring the thermal insulation performance, and improves the strength, surface accuracy, sound insulation and corrosion resistance of the door and window, thereby overcoming the shortcomings of existing aluminum alloy doors and windows.

[0006] To solve the above technical problems, the present invention provides a thermal insulation aluminum alloy door and window, comprising two relatively arranged aluminum alloy profiles, and two insulation strips arranged between the two aluminum alloy profiles, and an aerogel felt or an aerogel board is tightly arranged between the two insulation strips.

[0007] As a further improvement, a U-shaped lining paper is provided on the outer side of the aerogel felt or aerogel plate.

[0008] As a further improvement, polyurethane foam is provided between the aerogel felt or aerogel plate and the U-shaped lining paper.

[0009] As a further improvement, a plurality of aerogel felts or aerogel plates are arranged between two of the thermal insulation strips, and polyurethane foam is arranged between the plurality of aerogel felts or aerogel plates.

[0010] As a further improvement, the thermal insulation strip is made of nylon.

[0011] As an improvement of the present invention, the present invention also provides a method for preparing the above-mentioned thermal insulation aluminum alloy door and window, the preparation method comprising the following steps:

[0012] (1) Insert one end of the two thermal insulation strips into the toothed notch of the aluminum alloy profile on one side; (2) Insert the pre-cut aerogel felt or aerogel plate into the U-shaped space formed by the aluminum alloy profile and the two thermal insulation strips; (3) Install the aluminum alloy profile on the other side at the other end of the two thermal insulation strips to complete the composite of the aerogel felt or aerogel plate and the aluminum alloy profile; (4) Extrude the toothed notch on the aluminum alloy profile to complete the tight fixation of the aerogel felt or aerogel plate between the aluminum alloy profile on both sides and the two thermal insulation strips to obtain the thermal insulation aluminum alloy door and window.

[0013] As a further improvement, the volume of the pre-cut aerogel felt or aerogel plate in step (2) exceeds the theoretical volume of the U-shaped space by 15%.

[0014] As a further improvement, the method for inserting the aerogel felt or aerogel plate into the U-shaped space in step (2) is: the pre-cut aerogel felt or aerogel plate is transferred to the interior of the U-shaped space along the axial direction of the U-shaped space by an aerogel roller, and a pressure wheel is provided on the upper part of the U-shaped space to press the portion exceeding the upper part of the U-shaped space into the interior of the U-shaped space.

[0015] Alternatively, the method for inserting the aerogel felt or aerogel plate into the U-shaped space in step (2) is: a U-shaped lining paper is arranged below the aerogel felt or aerogel plate, the aerogel felt or aerogel plate is located inside the U-shaped lining paper, and the U-shaped lining paper and the aerogel felt or aerogel plate arranged therein are pushed into the U-shaped space together.

[0016] Alternatively, the method for inserting the aerogel felt or aerogel plate into the U-shaped space in step (2) is as follows: a U-shaped lining paper is arranged below the aerogel felt or aerogel plate, the aerogel felt or aerogel plate is located inside the U-shaped lining paper, and a gap is left between the aerogel felt or aerogel plate and the U-shaped lining paper, and while the U-shaped lining paper and the aerogel felt or aerogel plate are pushed into the U-shaped space together, polyurethane foam is injected into the gap.

[0017] After adopting such a design, the present invention has at least the following advantages:

[0018] The heat-insulating aluminum alloy doors and windows of the present invention not only utilize the characteristics of excellent heat-insulating performance, light weight, and good flame-retardant effect of aerogel materials by arranging aerogel felt or aerogel plate in the cavity between the heat-insulating strips in the aluminum alloy door and window profile, but also greatly reduce the heat transfer coefficient of the aluminum alloy doors and windows, reduce the weight of the aluminum alloy doors and windows, improve the heat-insulating performance, sound insulation performance, and flame-retardant performance of the aluminum alloy doors and windows, and reduce the requirements for the door and window hardware. It can also simply and conveniently realize the compounding of aerogel felt or aerogel plate with aluminum alloy profiles, which is simple to manufacture, low in cost, and greatly improves the overall performance of the entire window. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] Figure 1 It is a structural diagram of existing thermally-broken aluminum doors and windows.

[0021] Figure 2 It is a structural schematic diagram of existing polyurethane thermal insulation aluminum alloy doors and windows.

[0022] Figure 3 It is a structural schematic diagram of the thermal insulation aluminum alloy door and window of the present invention.

[0023] Figure 4 It is a schematic flow chart of the method for preparing the thermal insulation aluminum alloy doors and windows of the present invention. DETAILED DESCRIPTION

[0024] The present invention arranges aerogel materials in the cavity between the heat insulation strips in the aluminum alloy door and window profile in the form of aerogel felt or aerogel board, which not only utilizes the characteristics of aerogel materials, such as excellent heat insulation performance, light weight, and good flame retardant effect, but also greatly reduces the heat transfer coefficient of aluminum alloy doors and windows, reduces the weight of aluminum alloy doors and windows, improves the thermal insulation performance, sound insulation performance, and flame retardant performance of aluminum alloy doors and windows, and reduces the requirements for door and window hardware, but also can simply and conveniently realize the compounding of aerogel felt or aerogel board with aluminum alloy profile, which is simple to manufacture, low in cost, and good in effect. The specific embodiments are as follows.

[0025] Embodiment 1

[0026] See attached Figure 3 As shown, the thermal insulation aluminum alloy door and window of this embodiment includes two aluminum alloy profiles 1 arranged opposite to each other, and two insulation strips 2 arranged between the two aluminum alloy profiles 1, and an aerogel felt 4 is tightly arranged between the two insulation strips 2.

[0027] In this embodiment, the aluminum alloy profile 1 is extruded by an existing extruder. Two symmetrically arranged toothed notches 11 are respectively provided on the opposite surfaces of the two aluminum alloy profiles 1 for inserting the heat insulation strip 2. In this embodiment, the heat insulation strip 2 is a nylon heat insulation strip.

[0028] In this embodiment, the aerogel felt 4 is cut according to the size of the U-shaped space 12 formed by the two aluminum alloy profiles 1 and the two insulation strips 2 before use. In order to meet the requirement that the aerogel felt 4 tightly fills the U-shaped space 12, the compression amount of the aerogel material needs to be reserved in advance, such as the volume of the pre-cut aerogel felt 4 must exceed 15% of the theoretical volume of the U-shaped space.

[0029] See attached Figure 4 As shown, in order to achieve the filling of the aerogel felt 4 in the U-shaped space 12 and avoid the problem of incomplete filling when the aerogel is injected under high pressure, leaving dead corners and gaps, the preparation method adopted in this embodiment is:

[0030] (1) Insert one end of each of the two heat insulation strips 2 into the toothed notch 11 of the aluminum alloy profile 1 on one side;

[0031] (2) inserting the cut aerogel felt 4 into the U-shaped space 12 formed by the aluminum alloy profile 1 and the two insulation strips 2;

[0032] Among them, the method for inserting the aerogel felt 4 into the U-shaped space 12 is: the cut aerogel felt 4 is transferred to the inside of the U-shaped space 12 along the axial direction of the U-shaped space by an aerogel roller, and a clamping wheel is provided on the upper part of the U-shaped space 12 to press the part exceeding the upper part of the U-shaped space 12 into the inside of the U-shaped space 12, so as to complete the tight pressing of the aerogel felt 4 into the U-shaped space 12.

[0033] (3) Install the aluminum alloy profile 1 on the other side at the other end of the two insulation strips 2 to complete the composite of the aerogel felt 4 and the aluminum alloy profile 1;

[0034] (4) The toothed notches 11 on the extruded aluminum alloy profile 1 are used to tightly fix the aerogel felt 4 between the aluminum alloy profiles 1 on both sides and the two insulation strips 2 to obtain thermal insulation aluminum alloy doors and windows.

[0035] Embodiment 2

[0036] The difference between this embodiment and the above-mentioned embodiment 1 is that an aerogel plate 4 ′ is tightly arranged inside the U-shaped space of the aluminum alloy door and window.

[0037] The difference is that the method of inserting the aerogel plate 4' into the U-shaped space is: a U-shaped lining paper is arranged below the aerogel plate 4', the aerogel plate 4' is located inside the U-shaped lining paper, and the U-shaped lining paper and the aerogel plate 4' arranged therein are pushed into the U-shaped space 12 together.

[0038] The method for inserting the aerogel plate utilizes the smoothness of the outer side of the U-shaped lining paper, so as to more conveniently and quickly insert the aerogel plate and improve the manufacturing efficiency.

[0039] In this way, the thermal insulation aluminum alloy door and window prepared by the preparation method contains the aerogel plate 4' inside and a U-shaped lining paper is arranged outside the aerogel plate 4'.

[0040] Embodiment 3

[0041] The difference between this embodiment and the above-mentioned embodiment 1 is that an aerogel plate 4 ′ is tightly arranged inside the U-shaped space of the aluminum alloy door and window.

[0042] The difference also lies in that the method of inserting the aerogel plate 4' into the U-shaped space is as follows: a U-shaped lining paper is arranged below the aerogel plate 4', the aerogel plate 4' is located inside the U-shaped lining paper, and a gap is left between the aerogel plate 4' and the U-shaped lining paper, and while the U-shaped lining paper and the aerogel plate 4' are pushed into the U-shaped space 12 together, polyurethane foam is injected into the gap left between the aerogel plate 4' and the U-shaped lining paper.

[0043] The insertion method of the aerogel board is to utilize the smoothness of the outer side of the U-shaped lining paper to more conveniently and quickly insert the aerogel board 4', thereby improving the production efficiency; and secondly, to utilize polyurethane foam to fill the gap between the aerogel board 4' and the U-shaped lining paper. After the polyurethane is cured, the U-shaped space can be better filled and solidified, thereby further increasing the heat insulation and sound insulation effects.

[0044] In this way, the heat-insulating aluminum alloy door and window prepared by the preparation method contains an aerogel plate 4' inside, a U-shaped lining paper is arranged on the outside thereof, and polyurethane foam is arranged between the aerogel plate 4 and the U-shaped lining paper.

[0045] Of course, according to actual conditions, multiple aerogel felts or aerogel boards can be arranged between two insulation strips, and polyurethane foam can be filled between the multiple aerogel felts or aerogel boards to further enhance the composite of aerogel and polyurethane materials.

[0046] And through comparative studies, it was found that filling aerogel felt or aerogel board in the cavity between two insulation strips can improve the thermal insulation performance of the entire window more significantly than filling it in the cavity inside the aluminum alloy profile itself, and the heat transfer coefficient is reduced more. The production method is simple and feasible.

[0047] The preparation method of the present invention can make the aerogel material fill the U-shaped space fully and not easy to loosen. In the later processing of aluminum alloy profiles, the aerogel material will not fall off, and the strength is higher and the surface precision is higher, which is conducive to the further processing of aluminum alloy profiles in the later stage, and is convenient for enriching the external decorative effect. It also has the advantages of easy processing, corrosion resistance, and long service life. And the heat transfer coefficient K value of the thermal insulation aluminum alloy door and window containing aerogel material obtained by the preparation method of the above embodiment can reach 0.6~0.9W / (m 2 ·K), which is much lower than the heat transfer coefficient of existing aluminum alloy doors and windows.

[0048] The thermal insulation aluminum alloy doors and windows of the present invention can not only greatly improve the thermal insulation performance of the doors and windows, but also improve the sound insulation performance of the products. Under the premise of ensuring the improvement of the profile performance, the weight of the aluminum alloy profile is reduced, the cost is reduced, and the performance requirements of the accessory products matching the aluminum alloy windows are reduced, thereby greatly improving the overall performance of the whole window.

[0049] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The above is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Those skilled in the art can make some simple modifications, equivalent changes or modifications using the technical contents disclosed above, which all fall within the protection scope of the present invention.

Claims

1. A method for preparing thermal insulation aluminum alloy doors and windows, characterized in that: The thermal insulation aluminum alloy door and window comprises two aluminum alloy profiles arranged opposite to each other, and two thermal insulation strips arranged between the two aluminum alloy profiles, an aerogel felt or an aerogel board is tightly arranged between the two thermal insulation strips, and a U-shaped lining paper is arranged on the outer side of the aerogel felt or the aerogel board; The preparation method comprises the following steps: (1) Insert one end of each of the two thermal insulation strips into the toothed notch of the aluminum alloy profile on one side; (2) inserting the pre-cut aerogel felt or aerogel plate into the U-shaped space formed by the aluminum alloy profile and the two thermal insulation strips; The volume of the pre-cut aerogel felt or aerogel plate exceeds 15% of the theoretical volume of the U-shaped space, and the method for inserting the aerogel felt or aerogel plate into the U-shaped space is as follows: a U-shaped lining paper is arranged below the aerogel felt or aerogel plate, the aerogel felt or aerogel plate is located inside the U-shaped lining paper, and the U-shaped lining paper and the aerogel felt or aerogel plate arranged inside the U-shaped lining paper are pushed into the U-shaped space together; (3) installing the aluminum alloy profile on the other side at the other end of the two thermal insulation strips to complete the composite of the aerogel felt or aerogel board and the aluminum alloy profile; (4) Extruding the toothed notches on the aluminum alloy profile to tightly fix the aerogel felt or aerogel plate between the aluminum alloy profiles on both sides and the two insulation strips to obtain the thermal insulation aluminum alloy door and window.

2. The method for preparing thermal insulation aluminum alloy doors and windows according to claim 1, characterized in that: The method for inserting the aerogel felt or aerogel plate into the U-shaped space in step (2) is as follows: the pre-cut aerogel felt or aerogel plate is transferred along the axial direction of the U-shaped space to the inside of the U-shaped space by an aerogel roller, and a pressure wheel is provided at the upper part of the U-shaped space to press the part exceeding the upper part of the U-shaped space into the inside of the U-shaped space.

3. The method for preparing thermal insulation aluminum alloy doors and windows according to claim 1, characterized in that: A polyurethane foam is provided between the aerogel felt or aerogel plate and the U-shaped lining paper; The method for inserting the aerogel felt or aerogel plate into the U-shaped space in step (2) is as follows: a U-shaped lining paper is arranged below the aerogel felt or aerogel plate, the aerogel felt or aerogel plate is located inside the U-shaped lining paper, and a gap is left between the aerogel felt or aerogel plate and the U-shaped lining paper; while pushing the U-shaped lining paper and the aerogel felt or aerogel plate into the U-shaped space together, polyurethane foam is injected into the gap.

4. A thermal insulation aluminum alloy door and window, characterized in that: The thermal insulation aluminum alloy door and window is prepared by the preparation method of any one of claims 1 to 3, and a plurality of aerogel felts or aerogel plates are arranged between two of the thermal insulation strips, and polyurethane foam is arranged between the plurality of aerogel felts or aerogel plates.

5. The thermal insulation aluminum alloy door and window according to claim 4, characterized in that: The heat insulation strip is a nylon heat insulation strip.

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