WO2022028013A1

WO2022028013A1 - Profile having low thermal conductance

Info

Publication number: WO2022028013A1
Application number: PCT/CN2021/090586
Authority: WO
Inventors: 程振朔; 薛明生
Original assignee: 程振朔; 薛明生
Priority date: 2020-08-06
Filing date: 2021-04-28
Publication date: 2022-02-10
Also published as: CN114059894A

Abstract

A profile having low thermal conductance, comprising an internal foam profile (1) and aluminum alloy profiles (2) compounded with the upper and lower surfaces of the foam profile (1). The foam profile (1) is a closed-cell foam profile formed by extruding and foaming high-strength engineering plastics, and the aluminum alloy profiles (2) are compounded with the upper and lower surfaces of the foam profile (1). By means of the profile, heat conduction of aluminum alloy is blocked by a plastic foamed profile, so that the thermal insulation performance is good, and the aluminum alloy profiles (2) are firmly connected to the foam profile (1).

Description

a low heat transfer profile

technical field

The invention relates to a profile with low heat transfer, which is specially used for making energy-saving doors and windows.

Background technique

At present, there are many types of profiles for building energy-saving doors and windows, among which the most representative is the thermal insulation aluminum alloy profile. FIG. 1 is a schematic structural diagram of the first embodiment of the existing thermal insulation aluminum alloy profile. As shown in FIG. 1 , the heat-insulating aluminum alloy profile includes a first aluminum alloy profile 10 and a second aluminum alloy profile 11, which are spaced apart and connected by a nylon profile 12. The two materials are combined to form a heat-insulating aluminum alloy. The heat transfer coefficient of the alloy profile is about 2.0W/㎡·K. FIG. 2 is a schematic structural diagram of the second embodiment of the existing heat-insulating aluminum alloy profile. As shown in FIG. 2 , the heat-insulating aluminum alloy profile includes a first aluminum profile 20 and a second aluminum profile 21 with a space therebetween. And connected by nylon profiles 22, the heat transfer coefficient of the heat-insulating aluminum alloy profiles is about 3.0W/㎡·K. As the requirements for building energy conservation are getting higher and higher, higher requirements are placed on the energy conservation of doors and windows. For example, Beijing will implement the standard that the heat transfer coefficient of building doors and windows is not higher than 1.1W/㎡·K in 2021. However, the existing heat-insulating aluminum alloy profiles shown in Fig. 1 and Fig. 2 are compounded into heat-insulating aluminum profiles by using nylon profiles to separate the two parts of the aluminum lining through a special compound machine. , The disadvantage of poor thermal insulation effect.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a low heat transfer profile to solve the deficiencies of the existing thermal insulation aluminum alloy profiles.

The technical principle of the present invention is that the sandwich structure has been firmly established in the composite material industry for more than 40 years. The sandwich structure consists of two surfaces and a core sandwiched in between. This structure can withstand high forces due to its solid surface. The core absorbs the shear stress generated by the load and distributes it over a wide area.

The technical scheme of the present invention is: a low heat transfer profile formed by using a foam profile as a core material and compounding aluminum alloy profiles on the upper and lower surfaces, including a foam profile in the middle and an aluminum alloy profile compounded on the upper and lower surfaces of the foam profile, The foam profile is a closed-cell foam profile formed by extruding and foaming high-strength engineering plastics, and aluminum alloy profiles are compounded on the upper and lower surfaces of the foam profile.

A high-strength engineering plastic foam profile is used as a core material and an aluminum alloy profile is compounded on the upper and lower surfaces to form a sandwich structure profile, which includes an internal foam profile and an aluminum alloy profile compounded on the upper and lower surfaces of the foam profile. The foam profile is a closed-cell foam profile formed by extruding and foaming high-strength engineering plastics.

The beneficial effect of the invention is that the nylon profile in the middle of the heat-insulating aluminum alloy profile is replaced with a foam profile extruded and foamed with high-strength engineering plastics, so that the heat conduction of the two parts of the aluminum alloy profile is blocked by the foam profile, and the aluminum alloy profile is greatly reduced. Alloy profile heat transfer, low heat transfer core material when used with high strength aluminum alloy, can provide ideal strength, stiffness and thermal insulation properties. The heat transfer coefficient of the profile made by the invention is about 1.0W/㎡·K, which is an ideal low heat transfer profile.

Further, the foam profile is made of nylon (PA), polyethylene terephthalate (PET), or polyimide (PI) by extrusion foaming process.

The beneficial effect of adopting the above-mentioned further scheme is that: the foam profile is foamed by high-strength engineering plastics and made by extrusion foaming process, and the heat insulation effect is good.

Further, the specific gravity of the foam profile is between 0.25-0.45g/cm ³ , the thermal conductivity of the foam profile is less than 0.06W/(mk), and the thickness of the foam profile is not less than 40mm.

The beneficial effect of adopting the above-mentioned further scheme is: adopting a suitable foam specific gravity can not only meet the requirement of low heat transfer, but also save the cost of raw materials.

Further, the wall thickness of the aluminum alloy profile is not less than 1.8 mm.

Further, the aluminum alloy profile structure includes a notch structure for installing accessories when making doors and windows.

Further, the aluminum alloy profiles are bonded together with the foam profiles by using epoxy resin or polyurethane resin.

Further, the upper and lower surfaces of the foam profile are respectively provided with connectors, the connectors are fastened on the upper surface or the lower surface of the foam profile, and the outer sides of the connectors are provided with dovetail grooves on the aluminum alloy profiles. A snap-fit snap-fit structure; the free end of the connector is provided with a plug-in wall inserted into the foam profile.

The beneficial effect of adopting the above-mentioned further scheme is that the foam profile is connected with the aluminum alloy profile by adding the connecting piece and the plug wall on the connecting piece, without changing the structure of the dovetail groove on the aluminum alloy profile, and the versatility is stronger.

Further, the connector includes a plastic connector.

Further, the insertion wall is provided with barbs.

The beneficial effect of adopting the above-mentioned further solution is that the arrangement of barbs is more conducive to the firm and stable connection between the foam profile and the connecting piece.

Further, the foam profile is provided with an embedded groove, the free end of the aluminum alloy profile is buckled on the upper surface or the lower surface of the foam profile, and the free ends of the aluminum alloy profile are respectively provided with embedded walls, the Embedded walls are embedded in the foam profile embedding grooves.

The beneficial effect of adopting the above-mentioned further scheme is: the aluminum alloy profile is partially covered and embedded on the surface of the foam profile, which changes the original "hand-in-hand" connection method between the aluminum alloy profile and the foam profile, and adopts the "hugging" connection method. The connection between the aluminum alloy profile and the foam profile is more firm and stable, and no additional connecting pieces are required.

Description of drawings

1 is a schematic structural diagram of Embodiment 1 of an existing heat-insulating aluminum alloy profile;

Fig. 2 is the structural representation of the second embodiment of the existing heat-insulating aluminum alloy profile;

3 is a schematic cross-sectional structure diagram of Embodiment 1 of the present invention;

Figure 4-1 is a schematic structural diagram of the foamed profile of Example 1 of the present invention;

Fig. 4-2 is a schematic structural diagram of the aluminum alloy profile of Example 1 of the present invention

Fig. 5 is the structural schematic diagram of the door and window frame profile of Embodiment 1 of the present invention;

Fig. 6 is the structural representation of the door and window sash profile of Embodiment 1 of the present invention;

Fig. 7 is the structural schematic diagram of the door and window stiffening profile of the embodiment 1 of the present invention

FIG. 8 is a schematic structural diagram of the door and window frame and sash combination according to Embodiment 1 of the present invention;

Figure 9-1 is a schematic structural diagram 1 of a door and window frame profile according to Embodiment 2 of the present invention;

Fig. 9-2 is the second structural schematic diagram of the door and window sash profile according to the second embodiment of the present invention;

Fig. 9-3 is a schematic diagram 3 of the structure of the door and window vertical profiles according to Embodiment 2 of the present invention;

Figure 10-1 is a schematic structural diagram 1 of a door and window frame profile according to Embodiment 3 of the present invention;

Fig. 10-2 is a second schematic diagram of the structure of the door and window sash profile according to Embodiment 3 of the present invention;

Fig. 10-3 is a schematic diagram 3 of the structure of the door and window vertical profiles according to Embodiment 3 of the present invention;

11 is a schematic structural diagram of a door and window according to Embodiment 3 of the present invention.

In the accompanying drawings, the list of components represented by each number is as follows:

1. Foam profile; 10. The first aluminum alloy profile; 11. The second aluminum alloy profile; 12. Nylon profile;

2. Aluminum alloy profile; 20. The first aluminum profile; 21. The second aluminum profile; 22. Nylon profile;

3. Connector; 31. Clip structure; 32. Plug-in wall; 4. Free end of aluminum alloy profile; 41. Embedded wall; 5. Frame material; 6. Sector material; 7. Straight material; 8. Multilayer Glass; 51, frame material sealing strip; 61, hardware installation profiles; 71, very sealing strip.

detailed description

The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.

Example 1

A low heat transfer profile in this embodiment, as shown in FIG. 3 , includes a foam profile 1, which is made of high-strength engineering plastic as a raw material and is extruded and foamed through a die; the aluminum The alloy profile 2 including the upper and lower surface profiles is also completed by extrusion. The profiles of the two materials are bonded together by epoxy resin or polyurethane resin to form a sandwich structure. The aluminum alloy on the upper and lower surfaces provides the strength of the profile, and the foam in the core provides good low heat transfer performance to achieve a good thermal insulation effect.

Figure 4-1 is a schematic diagram of the structure of the foam profile according to the embodiment of the present invention. As shown in Figure 4-1, the thermal conductivity of the foam profile 1 is less than 0.06W/(mk), which ensures that the profile has better thermal insulation performance. The specific gravity of the foam is between 0.25-0.45g/cm ³ , and the material used is small. The material of the foam profile 1 can be engineering plastics such as nylon, polyethylene terephthalate or polyimide, so as to ensure that the foam profile has high strength.

The heat transfer performance of the foam profile 1 is not only related to the thermal conductivity of the material, but also inseparable from the thickness. In order to ensure that the profile has good thermal insulation performance, the thickness of the foam profile is not less than 40MM.

Figure 4-2 shows the aluminum alloy profiles used in Example 1 of the present invention. As shown in Figure 4-2, there are two types of upper and lower surface profiles, which are changed according to the requirements and dimensions of the doors and windows.

FIG. 5 is a schematic structural diagram of the frame material of Example 1 of the present invention. As shown in FIG. 5 , a frame material sealing strip 51 is installed on one side of the foam profile 1 ; the aluminum alloy profile 2 has some notches for Glass sealing strips and other connecting parts for making doors and windows and beading strips for fixing glass.

FIG. 6 is a schematic diagram of the fan structure 6 according to Embodiment 1 of the present invention. As shown in FIG. 6 , the foam profiles 1 are designed in different shapes according to the functional requirements when making doors and windows; A hardware installation profile 61 is installed, which is used to firmly install the hardware and meet people's requirements for functions such as opening, opening, and hanging of the window. There are some notches on the aluminum alloy profiles for installing glass sealing strips and other connecting pieces when making doors and windows and pressing strips for fixing glass.

FIG. 7 is a schematic diagram of the stiffening material 7 according to the first embodiment of the present invention. As shown in FIG. 7 , a stiffening sealing strip 71 is installed on one side of the foamed section material 1, and the foamed section material 1 has different functions according to the functional requirements when making doors and windows. shape design. There are some notches on the aluminum alloy profile 2 for installing glass sealing strips and other connecting parts when making doors and windows and pressing strips for fixing glass.

FIG. 8 is a schematic structural diagram of assembling a door and window with a low heat transfer profile according to Embodiment 1 of the present invention. As shown in Fig. 8, when combining into a window, the above-mentioned frame material 5, fan material 6 and straight material 7 are firstly cut according to the size and shape of the window, and then according to the size after calculation, and then the frame material 5 is assembled by the assembling machine. , the fan material 6, the straight material 7 and the multi-layer glass 8 can be assembled into the whole window.

Example 2

A low heat transfer profile in this embodiment, as shown in Figures 9-1 to 9-3, includes a foam profile 1, which uses a high-strength engineering plastic as a raw material, and is extruded and foamed through a die. The aluminum alloy profile 2 including the upper and lower surface profiles is also completed by extrusion. The upper and lower surfaces of the foam profile 1 are respectively provided with a connecting piece 3, the connecting piece 3 is fastened on the upper surface or the lower surface of the foam profile 1, and the outer side of the connecting piece 3 is provided with a connecting piece 3 on the aluminum alloy profile 2. The dovetail groove is adapted to the clamping structure 31 for clamping, and the foam profile 1 and the aluminum alloy profile 2 are connected by adding the connecting piece 3 without changing the dovetail groove structure on the aluminum alloy profile 2, and the versatility is stronger.

The connector 3 in this embodiment includes a plastic connector, and the free end of the plastic connector is provided with a plug wall 32 inserted into the foam profile 1 , and the plug wall 32 is provided with barbs. The arrangement of the plug wall 32 and the barb is more conducive to the firm and stable connection of the foam profile 1 and the aluminum alloy profile 2 . In order to make the connection between the connector and the foam profile more firm, it can be further reinforced by means of gluing, and the gluing can be made of an adhesive such as epoxy resin or polyurethane resin.

As shown in Figures 9-1 to 9-3, the thermal conductivity of the foam profile 1 is less than 0.06W/(mk), which ensures that the profile has better thermal insulation performance. The specific gravity of the foam is between 0.25-0.45g/cm ³ , and the material used is small. The material of the foam profile 1 can be high-strength engineering plastics such as nylon, polyethylene terephthalate or polyimide, so as to ensure that the foam profile has high strength.

As shown in Figures 9-1 to 9-3, the foam profiles 1 are designed in different shapes according to the functional requirements of making doors and windows; the aluminum alloy profiles 2 have some notches for glass sealing strips and other Connecting pieces for making doors and windows and beading for fixing glass. It can meet people's requirements for windows that open outwards, open inwards, and hang open.

Referring to the schematic diagram of the door and window structure of FIG. 8, when combining into a window, the frame material, fan material and stand of the present embodiment are first based on the size and shape of the window, and then cut according to the size after calculation, and then the frame material 5 is assembled by the assembling machine. (Fig. 9-1), the fan material 6 (Fig. 9-2), the straight material 7 (Fig. 9-3) and the multi-layer glass 8 can be assembled into a whole window.

Example 3

A low heat transfer profile in this embodiment, as shown in Figures 10-1 to 10-3, includes a foam profile 1, which uses a high-strength engineering plastic as a raw material, and is extruded and foamed through a die The aluminum alloy profile 2 including the upper and lower surface profiles is also completed by extrusion. The foam profile 1 is provided with an embedded groove, the free end 4 of the aluminum alloy profile is buckled on the upper surface or the lower surface of the foam profile 1, and the free end 4 of the aluminum alloy profile is respectively provided with embedded walls 41 , the embedded wall 41 is embedded in the embedded groove of the foam profile 1 . The aluminum alloy profile 2 is partially covered and embedded into the surface of the foam profile 1, which changes the original "hand-in-hand" connection between the aluminum alloy profile 2 and the foam profile 1, and adopts the "hugging" connection method to make the aluminum alloy profile 2. The connection with the foam profile 1 is more firm and stable, and no additional connecting pieces are required. In order to make the connection between the aluminum alloy profile 2 and the foam profile 1 more firmly, it can be further reinforced by means of gluing, and the gluing can use an adhesive such as epoxy resin or polyurethane resin.

As shown in Figures 10-1 to 10-3, the thermal conductivity of the foam profile 1 is less than 0.06W/(mk)/, which ensures that the foam profile has better thermal insulation performance. The specific gravity of the foam is between 0.25-0.45g/cm ³ , and the material used is small. The material of the foam profile can be nylon (PA), polyethylene terephthalate (PET), or high-strength engineering plastics such as polyimide (PI) to ensure that the foam profile has high strength.

As shown in Figures 10-1 to 10-3, the foam profiles 1 are designed in different shapes according to the functional requirements when making doors and windows; the aluminum alloy profiles 2 have some notches for glass sealing strips and other Connecting pieces for making doors and windows and beading for fixing glass. It can meet people's requirements for windows that open outwards, open inwards, and hang open.

In Fig. 10-3, the embedded wall 41 of the free end of the aluminum alloy profile 2 is opened outward at a certain angle, and after it is fastened to the embedded groove on the foamed profile 1, it is then tightly matched with the embedded groove by pressing on the rollers.

As shown in Figure 11, when combining into a window, the frame material and fan material of this embodiment are firstly cut according to the size and shape of the window, and then cut according to the size after calculation, and then the frame material 5 (Fig. 10- 1), the fan material 6 (Fig. 10-2) and the multi-layer glass 8 can be assembled into the whole window.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

Claims

A low heat transfer profile formed by using a foam profile as a core material and compounding aluminum alloy profiles on the upper and lower surfaces, comprising a foam profile in the middle and an aluminum alloy profile compounded on the upper and lower surfaces of the foam profile, characterized in that the The foam profile is a closed-cell foam profile formed by extruding and foaming high-strength engineering plastics, and aluminum alloy profiles are compounded on the upper and lower surfaces of the foam profile.
A low heat transfer profile according to claim 1, wherein the foam profile is made of nylon, polyethylene terephthalate, or polyimide by extrusion foaming process .
A low heat transfer profile according to claim 1, wherein the specific gravity of the foam profile is between 0.25-0.45g/ cm3 , and the thermal conductivity of the foam profile is less than 0.06W/(mk), The thickness of the foam profile shall not be less than 40mm.
A low heat transfer profile according to claim 1, characterized in that, the wall thickness of the aluminum alloy profile is not less than 1.8 mm.
The low heat transfer profile according to claim 1, wherein the aluminum alloy profile structure comprises a notch structure for installing accessories when making doors and windows.
The low heat transfer profile according to claim 1, wherein the aluminum alloy profile is bonded together with the foam profile by using epoxy resin or polyurethane resin.
The low heat transfer profile according to claim 1, wherein the upper and lower surfaces of the foam profile are respectively provided with connecting pieces, and the connecting pieces are fastened on the upper surface and the lower surface of the foam profile, The outer side of the connecting piece is provided with a snap-fit structure adapted to snap with the dovetail groove on the aluminum alloy profile; the free end of the connecting piece is provided with a plug-in wall inserted into the foam profile.
The low heat transfer profile according to claim 7, wherein the connecting piece comprises a plastic connecting piece.
A low heat transfer profile according to claim 7, characterized in that the plug wall is provided with barbs.
The low heat transfer profile according to claim 1, wherein the foam profile is provided with an embedded groove, and the free end of the aluminum alloy profile is fastened on the upper surface and the lower surface of the foam profile , the free ends of the aluminum alloy profiles are respectively provided with embedded walls, and the embedded walls are embedded in the embedded grooves of the foam profiles.