Multi-cavity pressure balance hollow glass

Abstract

The invention relates to the technical field of hollow glass, and discloses multi-cavity pressure balance hollow glass which comprises at least three glass sheets arranged in parallel at intervals. Protruding parts are formed at the ends of the two outermost layers of glass sheets. The first spacing bar is arranged at the end part in the cavity, and a first air hole is formed in the first inner end part of the first spacing bar; the first air hole is communicated with the interior of the cavity; second air holes communicated with the first air holes through the interiors of the first spacing bars are formed in the outer ends of the first spacing bars; the second spacing bar is arranged between the protruding parts; a third air hole communicated with the second air hole is formed in the second inner end part of the second spacing bar; and the third air holes are communicated with each other through the second spacing bar. Through the special design of the first spacing bar and the second spacing bar, the pressure balance among the cavities of the hollow glass is kept, the problem of cavity deformation difference caused by different thermal expansion and cold contraction of internal gas due to different cavity temperatures is solved, and the deformation of the middle glass sheet and the overall optical distortion of the hollow glass are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hollow glass, in particular to a multi-cavity pressure balance hollow glass. BACKGROUND

[0002] According to relevant statistics, the demand for building doors, windows and curtain walls is about 400 million to 600 million square meters per year. With the improvement of energy-saving design standards, most of the existing new buildings use low-emissivity hollow glass. For three-layer low-emissivity hollow glass, the thickness of a single glass is at least 5mm or 6mm; the thickness of the prepared three-glass two-cavity hollow glass is generally between 33mm and 50mm.

[0003] With the increase of the number of glass layers and the number of hollow cavities, the overall weight and thickness of the hollow glass also become larger. Because each hollow cavity is separated by glass into an independent cavity, because the indoor temperature and the outdoor temperature are different, the temperature in each cavity is also different, so that the gas expands and contracts with heat, and then the deformation of the glass between each cavity is also different. The asymmetric deformation of multiple glasses is superimposed, which aggravates the optical distortion of the overall hollow glass. SUMMARY

[0004] Therefore, the present application provides a multi-cavity pressure balance hollow glass to solve the problem that each hollow cavity is separated by glass into an independent cavity, because the indoor temperature and the outdoor temperature are different, the temperature in each cavity is also different, so that the gas expands and contracts with heat, and then the deformation of the glass between each cavity is also different. The asymmetric deformation of multiple glasses is superimposed, which aggravates the optical distortion of the overall hollow glass.

[0005] The present application provides a multi-cavity pressure balance hollow glass, comprising:

[0006] At least three glass sheets are arranged in parallel to form at least two adjacent cavities; the end portions of the outermost two glass sheets extend outward relative to the end portions of the glass sheet located in the middle layer to form protruding portions;

[0007] A first spacing strip is arranged at the end portion in the cavity, a first air hole is arranged at the first inner end portion of the first spacing strip; the first air hole is in communication with the inside of the cavity; a second air hole is arranged at the outer end portion of the first spacing strip; the first air hole is in communication with the second air hole through the inside of the first spacing strip; the two side surfaces of the first spacing strip are respectively sealed by water-proof adhesive with the two glass sheets on the sides;

[0008] The second spacer strip is arranged between the protruding portions of the outermost two glass sheets; a third air hole is arranged at the second inner end portion of the second spacer strip and is opposite to and communicates with the second air hole of all the first spacer strips; all the third air holes communicate with each other through the interior of the second spacer strip; and the two side surfaces of the second spacer strip are respectively sealed by water-proof adhesive and the outermost two glass sheets. Beneficial effects: the first air hole, the second air hole and the third air hole of the first spacer strip and the second spacer strip are specially designed to maintain the pressure balance between the cavities in the hollow glass, solve the cavity deformation difference caused by the different thermal expansion and contraction of the internal gas due to the different temperatures of the two cavities during use, reduce the deformation of the middle glass sheet and the optical distortion of the whole hollow glass, and ensure the overall service life of the hollow glass. The water-proof adhesive meets the sealing requirements of preventing water vapor penetration, and the second spacer strip achieves a certain sealing effect.

[0009] Optionally, a gap is arranged between the first spacer strip and all the second spacer strips, or a gap is arranged on the opposite part of the length between the first spacer strip and all the second spacer strips. Beneficial effects: the gap prevents the first spacer strip and the second spacer strip from losing the communication effect due to the misalignment of the second air hole and the third air hole after complete lamination, causing the pressure in the cavity to increase and the glass sheet to deform.

[0010] Optionally, the size of the gap is not greater than 5 mm.

[0011] Optionally, the end portion of all the glass sheets in the middle layer is aligned with the outer end of the first spacer strip. Beneficial effects: the above technical solution avoids the contact between the end portion of the glass sheet in the middle layer and the second spacer strip, reduces the risk of breakage of the end portion of the glass sheet in the middle layer due to the contact with the second spacer strip caused by the expansion of the cavity during use, and effectively fixes the glass sheet in the middle layer.

[0012] Optionally, the interiors of the first spacer strip and the second spacer strip are hollow, and the interiors of the first spacer strip and the second spacer strip are filled with molecular sieves. Beneficial effects: the above technical solution prevents the leakage of molecular sieves, realizes the micro-flow of gas between the cavities, and ensures the stable balance of the air pressure in the cavities.

[0013] Optionally, the thickness of the glass sheet in the middle layer is not thinner than the thickness of the glass sheets in the outermost two layers. Advantage: the present application adopts the above technical solution, because the cavity pressure on both sides of the glass sheet in the middle layer is balanced, the glass sheet in the middle layer is not stressed, the material thickness of the glass sheet in the middle layer can be thinner, and the risk of breakage of the thin glass during use is significantly reduced; on the basis of ensuring the overall heat insulation performance of the hollow glass, the overall thickness and weight of the hollow glass are significantly reduced, and energy saving and material saving are significantly achieved.

[0014] Optionally, the position between the second spacer strip and the protrusions between the outermost two glass sheets is sealed by sealant or structural adhesive.

[0015] Optionally, the water-tight adhesive is water-tight butyl adhesive.

[0016] Optionally, the first end and the tail end of the first spacer strip arranged around the cavity are sealed and connected by a first plug; and the first end and the tail end of the second spacer strip between the protrusions of the outermost two glass sheets are sealed and connected by a second plug. Advantage: the present application adopts the above technical solution, and the stability of the installation of the first spacer strip and the second spacer strip is ensured by the first plug and the second plug respectively.

[0017] Optionally, the cavity is filled with at least one of air or rare gas. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following description of the specific embodiments or the prior art will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0019] Figure 1 Cross-sectional structure of the multi-cavity pressure balanced hollow glass provided in the embodiments of the present application Figure One ;

[0020] Figure 2 Cross-sectional structure of the multi-cavity pressure balanced hollow glass provided in the embodiments of the present application Figure Two .

[0021] Explanation of reference signs:

[0022] 1, glass sheet; 2, first spacer strip; 3, second spacer strip; 4, protrusion; 5, first inner end; 6, sealant; 7, gap; 8, water-tight butyl adhesive; 9, second inner end. DETAILED DESCRIPTION

[0023] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0024] like Figures 1 to 2 A specific embodiment of the multi-cavity pressure-balanced insulating glass shown includes: at least three glass sheets 1 spaced apart and arranged in parallel, a first spacer bar 2 and a second spacer bar 3 .

[0025] The glass sheets 1 are spaced apart and arranged in parallel to form at least two adjacent cavities, such as Figure 1 and Figure 2 As shown, three spaced, parallel glass sheets 1 form two cavities. The ends of the two outermost glass sheets 1 extend outward relative to the ends of the middle glass sheet 1, forming protrusions 4. A first spacer 2 is positioned at the end of the cavity. A first air hole is provided at the first inner end 5 of the first spacer 2; the first air hole communicates with the interior of the cavity. A second air hole is provided at the outer end of the first spacer 2; the first air hole communicates with the second air hole through the interior of the first spacer 2. The two side surfaces of the first spacer 2 are respectively bonded and sealed to the glass sheets 1 on either side with watertight adhesive. A second spacer 3 is positioned between the protrusions 4 of the two outermost glass sheets 1. A third air hole is provided at the second inner end 9 of the second spacer 3, opposite to and connected to the second air holes of all the first spacers 2. All third air holes communicate with each other through the interior of the second spacer 3. The two side surfaces of the second spacer 3 are respectively bonded and sealed to the two outermost glass sheets 1 with watertight adhesive. Specifically, the watertight adhesive is watertight butyl adhesive 8. The cavity is filled with at least one of air or a rare gas; the rare gas is at least one of argon, krypton, and xenon. The diameters of the first and second air holes are both 0.05 mm to 0.8 mm; the center-to-center distance between adjacent first or second air holes is 1 mm to 10 mm. The diameter of the third air hole is 0.05 mm to 0.8 mm; the center-to-center distance between adjacent third air holes is 1 mm to 10 mm.

[0026] exist Figure 1The thickness of the outermost two glass sheets 1 is 4mm, the thickness of the glass sheet 1 in the middle layer is 1mm, the width of the first spacer 2 is 6mm; the width of the second spacer 3 is 13mm; the diameter of the first, second and third air holes is 0.05mm; the center distance between adjacent first air holes or adjacent second air holes is 1mm; the center distance between adjacent third air holes is also 1mm.

[0027] In the embodiment shown in Figure 2 The thickness of the outermost two glass sheets 1 is 5mm, the thickness of the glass sheet 1 in the middle layer is 3mm, the width of the first spacer 2 is 12mm; the width of the second spacer 3 is 27mm; the diameter of the first, second and third air holes is 0.5mm; the center distance between adjacent first air holes or adjacent second air holes is 5mm; the center distance between adjacent third air holes is also 5mm.

[0028] Further, a gap 7 is provided between the first spacer 2 and all the second spacers 3; or, a gap 7 is provided on the opposite length between the first spacer 2 and all the second spacers 3.

[0029] Specifically, the size of the gap 7 is not greater than 5mm. Figure 1 In the embodiment shown in Figure 2 In the embodiment shown in the figure, the gap 7 is provided on the opposite length between the two first spacers 2 and the second spacer 3 at the middle part, and the size of the gap 7 is 5mm. By providing the gap 7, it is prevented that the first spacer 2 and the second spacer 3 are dislocated after being completely attached due to the dislocation of the second air hole and the third air hole, losing the connecting effect, causing the pressure in the cavity to increase, and the glass sheet 1 to deform. If the pressure in the cavity is too large, it is also easy to cause the first spacer 2 to be separated out of the gap, causing the first spacer 2 to be dislocated or deformed, significantly reducing the service life of the first spacer 2. In theory, there is only one gap 7 between the first spacer 2 and the second spacer 3, which can ensure the air flow between the cavities. When the hollow glass is subjected to the wind pressure of the outside strong wind, the diameter and the number of the first, second and third air holes need to be controlled to ensure that the gas can flow at any time; generally, the diameter of the first, second and third air holes is increased, or the number of the first, second and third air holes is increased at the same time. If the diameter of the first, second and third air holes is too small and the number is insufficient, it is likely to cause the first spacer 2 to move. The reason why the first spacer 2 can move is that the bonding strength of the water-resistant butyl rubber 8 on both sides of the first spacer 2 is generally not high.

[0030] Specifically, the end of the glass sheet 1 in the middle layer is aligned with the outer end of the first spacer 2.

[0031] Specifically, the inner part of the first spacer 2 and the second spacer 3 is hollow, and the inner part of the first spacer 2 and the second spacer 3 is filled with molecular sieve.

[0032] Further, the thickness of the glass sheet 1 in the middle layer is not less than the thickness of the glass sheet 1 in the outermost two layers. Of course, the thickness of the glass sheet 1 in the middle layer can be less than the thickness of the glass sheet 1 in the outermost two layers. That is, the glass sheet 1 in the middle layer can be a thin glass. The thickness of the glass sheet 1 in the middle layer is not more than 3 mm.

[0033] Further, as shown in Figure 1 and Figure 2 the position between the second spacer 3 and the protruding part 4 of the glass sheet 1 in the outermost two layers is sealed by sealant 6 or structural adhesive.

[0034] Further, the first end and the tail end of the first spacer 2 around the cavity are sealed and connected by the first plug; the first end and the tail end of the second spacer 3 around the protruding part 4 of the glass sheet 1 in the outermost two layers are sealed and connected by the second plug. The first spacer 2 and the second spacer 3 are hollow and can be bent; when the hollow glass is square, the first spacer 2 and the second spacer 3 can be bent into four sides, and then the first end and the tail end are sealed and connected by the first plug or the second plug. When the first end and the tail end are located at the corner, the first plug or the second plug with an angle of 90 degrees is used for sealing and connecting.

[0035] Although the embodiments of the present application are described in conjunction with the drawings, various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application, and such modifications and changes fall within the scope defined by the appended claims.

Claims

1. A multi-cavity pressure equalized insulating glazing, characterized by, The application relates to a glass curtain wall, which comprises the following parts: at least three glass sheets (1) arranged in parallel at intervals to form at least two adjacent cavities; the end portions of the outermost two glass sheets (1) extend outward relative to the end portions of the glass sheets (1) in the middle layer to form protruding portions (4); a first spacing strip (2) arranged at the end position in the cavity; a first air-permeable hole is arranged at the first inner end portion (5) of the first spacing strip (2); the first air-permeable hole is in communication with the inside of the cavity; a second air-permeable hole is arranged at the outer end portion of the first spacing strip (2); the first air-permeable hole is in communication with the second air-permeable hole through the inside of the first spacing strip (2); the two side surfaces of the first spacing strip (2) are respectively sealed by water-proof adhesive glue with the two glass sheets (1) on the two sides; a second spacing strip (3) arranged between the protruding portions (4) of the outermost two glass sheets (1); a third air-permeable hole is arranged at the second inner end portion (9) of the second spacing strip (3) and is opposite to and in communication with the second air-permeable holes of all the first spacing strips (2); all the third air-permeable holes are in communication with each other through the inside of the second spacing strip (3); the two side surfaces of the second spacing strip (3) are respectively sealed by water-proof adhesive glue with the outermost two glass sheets (1).

2. The multi-cavity pressure equalized insulating glazing of claim 1, wherein, a gap (7) is arranged between the first spacing strip (2) and all the second spacing strips (3); or the gap (7) is arranged on the opposite part of the length between the first spacing strip (2) and all the second spacing strips (3).

3. The multi-cavity pressure equalized insulating glazing of claim 2, wherein, The size of the gap (7) is not greater than 5 mm.

4. The multi-cavity pressure equalized insulating glazing of claim 1, wherein, The end portions of all the glass sheets (1) in the middle layer are arranged in alignment with the outer end of the first spacing strip (2).

5. The multi-cavity pressure equalized insulating glazing of any of claims 1-4, wherein, The inside of the first spacing strip (2) and the second spacing strip (3) is hollow; the inside of the first spacing strip (2) and the second spacing strip (3) is filled with molecular sieve.

6. The multi-cavity pressure equalized insulating glazing of any of claims 1-4, wherein, The thickness of the glass sheets (1) in the middle layer is not less than the thickness of the outermost two glass sheets (1).

7. The multi-cavity pressure equalized insulating glazing of any of claims 1-4, wherein, The position outside the second spacing strip (3) and between the protruding portions (4) of the outermost two glass sheets (1) is sealed by sealant (6) or structural glue.

8. The multi-cavity pressure equalized insulating glazing of any of claims 1-4, wherein, The water-proof adhesive glue is water-proof butyl glue (8).

9. The multi-cavity pressure equalized insulating glazing of any of claims 1-4, wherein, The leading end and the trailing end of the first spacing strip (2) arranged around the cavity are sealed and connected by a first plug; the leading end and the trailing end of the second spacing strip (3) arranged around the protruding portions (4) of the outermost two glass sheets (1) are sealed and connected by a second plug.

10. The multi-cavity pressure equalized insulating glazing of any of claims 1-4, wherein, The cavity is filled with at least one of air or rare gas.

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