KR20200109284A - Vacuum glazing - Google Patents

Abstract

The present invention relates to vacuum glass with an improved thermal insulation performance. The vacuum glass according to an embodiment of the present invention comprises: first glass and second glass; a vacuum layer provided in a separated space between the first and second glasses; a sealing part provided between the first and second glasses; an exhaust hole provided in the second glass; and an exhaust finishing material sealing the exhaust hole after an exhaust process of exhausting gas between the first and second glasses through the exhaust hole is performed.

Description

Vacuum glass {Vacuum glazing}

The present invention relates to a vacuum glass.

Glass can be used on the door of home appliances. For example, the glass may be used for a door of a refrigerator. When glass is applied to the door of the refrigerator, there is an advantage in that food stored in the refrigerator can be easily identified without opening the door through glass made of a transparent material.

However, due to its characteristics, glass has a low thermal insulation rate, so that cold air stored in the refrigerator leaks out through the glass. In particular, when the glass is composed of a single-layered plate glass, the problem of low heat insulation may become more serious.

In order to compensate for this low thermal insulation rate, the glass may be composed of a multilayer glass or vacuum glass composed of at least two panes. The multilayer glass may be configured by injecting a specific gas having a low heat transfer rate between the two panes.

In addition, the vacuum glass may be configured by forming a space between the two panes with a vacuum. In terms of the ability to block heat transfer inside and outside the glass, the vacuum glass may be more advantageous than the multilayer glass.

The vacuum glass may be manufactured by a vacuum glass manufacturing apparatus. For example, the vacuum glass manufacturing apparatus includes a heating device for melting a sealing member for bonding two glass plates, a vacuum device for forming the inside of the two glass plates with vacuum, and a capping device for sealing an exhaust hole formed in the glass plate. May be included.

In connection with this vacuum glass manufacturing apparatus, the following prior art is introduced.

1.Public patent number (publication date): 10-2015-0124068 (November 5, 2015)

2. Title of invention: Vacuum glass panel manufacturing equipment

According to the prior art, the following problems exist.

First, since a vacuum chamber for forming a vacuum atmosphere is provided and a vacuum glass panel is inserted into the vacuum panel to perform a manufacturing process, the size of the vacuum chamber becomes too large. Therefore, there is a problem in that the volume of the manufacturing apparatus becomes large, making it difficult to implement a compact manufacturing apparatus.

In addition, the vacuum chamber is an essential element of the conventional manufacturing apparatus, and when the vacuum chamber is not applied, vacuum leakage may occur in the capping apparatus of the vacuum glass panel. Therefore, it is not easy to implement a conventional manufacturing apparatus by removing the vacuum chamber.

Second, there is a difference between the temperature of the exhaust process of the vacuum glass panel and the temperature of the finishing process that seals the exhaust hole, so that when the exhaust process and the finishing process are sequentially performed, there is a problem that the glass panel is damaged due to thermal shock due to temperature deviation. Can occur.

Third, when performing the exhaust process, there may be a problem that the glass panel is damaged due to the concentration of stress around the exhaust hole.

The present invention has been proposed to solve this problem, and an object of the present invention is to provide an apparatus for manufacturing a vacuum glass capable of improving thermal insulation performance.

Further, it is an object of the present invention to provide an apparatus for manufacturing vacuum glass having a compact structure. In particular, it is an object of the present invention to provide an apparatus for manufacturing a vacuum glass capable of performing an exhaust process and a finishing process in a vacuum atmosphere by having an exhaust head equipped with a heating device and a vacuum device.

In addition, an object of the present invention is to provide an apparatus for manufacturing a vacuum glass capable of preventing air bubbles from being generated in the exhaust finishing frit during the finishing process by effectively transmitting the exhaust pressure to the exhaust finishing frit through the cap frit.

In addition, by installing a support plate on the upper side of the cap frit to prevent heat transfer between the heating device and the plate glass assembly, a vacuum glass manufacturing device that prevents the occurrence of thermal shock to the plate glass assembly due to temperature deviation during the exhaust process and the finishing process. It aims to provide.

In addition, an object of the present invention is to provide an apparatus for manufacturing a vacuum glass including a configuration in which the support plate can easily press the cap frit.

In addition, an object of the present invention is to provide an apparatus for manufacturing a vacuum glass through which gas inside a plate glass assembly can be easily exhausted by improving the structure of the exhaust finishing frit.

The apparatus for manufacturing a vacuum glass according to an embodiment of the present invention includes an exhaust finishing frit inserted into an exhaust hole of a plate glass assembly, so that the exhaust hole can be sealed in the exhaust process.

The exhaust finishing frit includes a frit body having an upper surface portion of the body on which the cap frit is placed, a depression portion recessed upward from the bottom surface of the frit body, and an exhaust guide portion formed through the outer circumferential surface of the frit body. It is possible to prevent bubbles from being generated in the exhaust finishing frit.

Since the recessed portion and the exhaust guide portion communicate with each other, the internal gas of the plate glass assembly can be easily exhausted during the exhaust process.

The exhaust guide portion may have a circular or polygonal shape.

The diameter of the exhaust guide portion is formed to be at least 1 mm or more, so that a smooth exhaust process can be performed.

A plurality of exhaust guide units may be provided.

Among the plurality of exhaust guide portions, the gap between the two closest exhaust guide portions is formed to be at least 1 mm or more, so that the shape of the exhaust finishing frit can be maintained.

Since the vertical height and the horizontal length of the square-shaped exhaust guide part are formed to be at least 1 mm or more, the exhaust process can be easily performed and the shape of the exhaust finishing frit can be easily maintained.

The exhaust hole is formed to penetrate from the top surface to the bottom surface of the second pane, so that the gas inside the pane assembly can be easily discharged.

The exhaust hole has a stepped shape, and the exhaust finishing frit may be stably supported in the stepped exhaust hole.

According to the present invention according to the above solution, it is possible to manufacture a vacuum glass with improved insulation performance.

In addition, since an apparatus for manufacturing a vacuum glass having a compact structure that does not require a vacuum chamber for inserting a plate glass assembly is implemented, a manufacturing process of the vacuum glass can be simplified and manufacturing cost can be reduced. In particular, by providing an exhaust head equipped with a heating device and a vacuum device, it is possible to easily perform an exhaust process and a finishing process in a vacuum atmosphere.

In addition, by installing the cap frit on the exhaust finishing frit, when the exhaust process is performed, the exhaust pressure can be effectively transmitted to the exhaust finishing frit through the cap frit.

In particular, since the exhaust finishing frit having a cylindrical shape includes an exhaust guide portion formed on the outer circumferential surface, the exhaust pressure is evenly transmitted to the exhaust finishing frit, so that bubbles can be prevented from occurring in the exhaust finishing frit during the finishing process. In addition, the gas inside the plate glass assembly may be easily exhausted through the exhaust guide part.

In addition, since the supporting plate is on the upper side of the cap frit to prevent heat transfer between the heating device and the plate glass assembly, it is possible to prevent the occurrence of thermal shock in the plate glass assembly due to temperature deviation during the exhaust process and the finishing process.

In addition, since the elastic member is supported on the upper side of the support plate, the support plate can easily press the cap frit, and accordingly, the stress around the exhaust hole can be distributed to the cap frit or the support plate, so that damage to the plate glass assembly is prevented. Can be prevented.

1 is a cross-sectional view showing the configuration of a vacuum glass according to an embodiment of the present invention.
2A to 2C are views showing a manufacturing process of a plate glass assembly according to an embodiment of the present invention.
3 is a diagram showing the configuration of an exhaust finishing apparatus according to a first embodiment of the present invention.
4 is a diagram showing the configuration of an exhaust finishing frit and a cap frit according to the first embodiment of the present invention.
5 is an exploded view showing the configuration of a plurality of exhaust guides formed on the outer circumferential surface of the exhaust finishing frit according to the first embodiment of the present invention.
6 is a view showing the configuration of a support plate according to the first embodiment of the present invention.
7 is a flow chart showing a method of manufacturing a vacuum glass according to the first embodiment of the present invention.
8 is a diagram showing a state in which an exhaust process is performed in the exhaust finishing apparatus according to the first embodiment of the present invention.
9 is a view showing the configuration of an exhaust finishing frit according to a second embodiment of the present invention.
10 is a cross-sectional view showing a state in which an exhaust finishing frit is mounted on a second plate glass according to a third embodiment of the present invention.

Hereinafter, specific embodiments of the present invention will be described with reference to the drawings. However, the spirit of the present invention is not limited to the presented embodiments, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments within the scope of the same idea.

[First Example]

1 is a cross-sectional view showing the configuration of a vacuum glass according to an embodiment of the present invention.

Referring to FIG. 1, the vacuum glass 10 according to an embodiment of the present invention may be used for a refrigerator door.

The vacuum glass 10 includes a plurality of plate glasses 110 and 120. The plurality of plate glasses 110 and 120 includes a first plate glass 110 and a second plate glass 120 disposed on one side of the first plate glass 110. The direction in which the first and second panes 110 and 120 are disposed may vary depending on the viewing direction, but the second pane 120 may be disposed above the first pane 110 based on the drawing.

For example, when the vacuum glass 10 is used for a refrigerator door, the second plate glass 120 may form a rear surface of the refrigerator door, and the first plate glass 110 may form a front surface of the refrigerator door.

The first plate glass 110 and the second plate glass 120 are provided in a thin plate shape. For example, the thickness of the first and second panes 110 and 120 may be formed in a range of 3.5 to 4.5 mm. The first and second panes 110 and 120 may have, for example, a shape of a quadrangular panel. In addition, the first and second panes 110 and 120 may be provided to have the same size or shape.

The first and second panes 110 and 120 may be configured to be bonded to each other. A sealant 170 may be provided between the first and second panes 110 and 120. In detail, the sealant 170 is provided on the edge of the first and second panes 110 and 120 to perform a function of sealing a space between the first and second panes 110 and 120. have.

The sealant 170 may be applied to the first plate glass 110. For example, the sealant 170 may be sprayed onto the first pane 110. In addition, the sealant 170 may be made of a glass frit. When the first and second panes 110 and 120 are assembled to form the pane and then heated, the sealant 170 may be melted and compressed between the first and second panes 110 and 120.

The first and second panes 110 and 120 are disposed to be spaced apart from each other in the vertical direction, and a vacuum layer 180 may be formed in the spaced apart from each other. That is, the vacuum layer 180 may be formed between the top surface of the first pane 110 and the bottom surface of the second pane 120. The upper and lower widths of the vacuum layer 180 form about 0.18 to 0.22 mm, and the vacuum pressure may be 10 ^-3 Torr or less.

A spacer 130 for supporting the first and second panes 110 and 120 may be provided between the first and second panes 110 and 120. The spacer 130 is provided on the vacuum layer 180 and may have a substantially cylindrical shape, for example.

A lower portion of the spacer 130 may be supported on an upper surface of the first pane 110, and an upper portion may support a bottom surface of the second pane 120.

The spacer 130 includes a plurality of spacers 130. The diameter of the spacer 130 may be about 0.5 mm, and the distance between the plurality of spacers 130 may be about 25 mm.

The second plate glass 120 is provided with an exhaust finishing material 140. The exhaust finishing material 140 is configured to seal the exhaust hole 125 (see FIG. 2C) formed in the second plate glass 120, and may be formed by melting and cooling the exhaust finishing frit 140a (see FIG. 3). have.

The exhaust hole 125 is configured to exhaust gas existing between the first and second panes 120 to form a vacuum layer 180 in the space between the first and second panes 110 and 120, and the It may be configured to penetrate the second plate glass 120 vertically. That is, the exhaust hole 125 may be formed to penetrate from the top to the bottom of the second pane 120.

After performing exhaust through the exhaust hole 125, the exhaust finishing material 140 closes the exhaust hole 125. As an example, the exhaust finish 140 may be formed of a glass frit having a relatively low melting point.

The vacuum glass 10 further includes an exhaust cap 145 provided on the upper side of the exhaust finishing material 140. The exhaust cap 145 has a cap shape capable of covering the exhaust finishing material 140 and may be made of a metal material. The exhaust cap 145 prevents the pressure outside the vacuum glass 10 from acting on the exhaust finishing material 140, and thus the exhaustion of the exhaust finishing material 140 from the exhaust hole 125 or the exhaust It is possible to prevent damage to the finishing material 140.

The vacuum glass 10 further includes a gas adsorbent 160 (getter). The gas adsorbent 160 may be understood as a configuration capable of adsorbing moisture or gas that may occur during the manufacturing process of the vacuum glass 10.

That is, even if the vacuum layer 180 is formed inside the vacuum glass 10, moisture or a predetermined gas may be generated from the first and second panes 110 and 120 or the spacer 130, and the gas adsorbent ( 160) adsorbs these gases so that a vacuum can be maintained. For example, the gas adsorbent 160 may include a non-evaporable getter activated when an electric current flows. After the manufacture of the vacuum glass 10 is completed, power supplied from the outside of the vacuum glass 10 may be supplied to the gas adsorbent 160 through a wire.

2A to 2C are views showing a manufacturing process of a plate glass assembly according to an embodiment of the present invention.

First, referring to FIG. 2, a first plate glass 110 is provided. The first pane 110 may be provided in a washed state.

A sealant 170 is applied to the first plate glass 110. The sealant 170 may be applied along the edge of the first plate glass 110. For example, the sealant 170 may be applied in a quadrangular shape on one surface of the first plate glass 110.

A spacer 130 may be installed on the upper surface of the first plate glass 110. A plurality of spacers 130 are provided, and may be arranged at predetermined intervals. For example, the plurality of spacers 130 may be arranged in a lattice (matrix) shape. The plurality of spacers 130 may protrude from the upper surface of the first pane 110 (FIG. 2B).

On the upper side of the first pane 110, the second pane 120 may be covered. When the second pane 120 is disposed, an upper portion of the plurality of spacers 130 may support a lower surface of the second pane 120.

An exhaust hole 125 may be formed in the second plate glass 120. As described above, the exhaust hole 125 is understood as a configuration for forming the vacuum layer 180 by exhausting the gas existing between the first and second panes 110 and 120. In addition, the gas adsorbent 160 may be provided on the bottom of the second glass plate 120.

When the first and second panes 110 and 120 are assembled by the method described above, the assembly of the first and second panes 110 and 120 (hereinafter, the pane glass assembly) is heated, and in this process, the sealant 170 is melt-pressed to The edges of the 1,2 panes 110 and 120 may be sealed (FIG. 2C).

3 is a view showing the configuration of an exhaust finishing device according to a first embodiment of the present invention, FIG. 4 is a view showing the configuration of an exhaust finishing frit and a cap frit according to the first embodiment of the present invention, and FIG. It is an exploded view showing the configuration of a plurality of exhaust guides formed on the outer circumferential surface of the exhaust finishing frit according to the first embodiment of the present invention, and FIG. 6 is a view showing the configuration of a support plate according to the first embodiment of the present invention.

Referring to FIGS. 3 to 6, the plate glass assemblies 110 and 120 assembled by the method described in FIGS. 2A to 2C may be installed in the exhaust closing device 200 to perform an exhaust process and a finishing process.

The exhaust closing device 200 includes an exhaust head 210 to which an exhaust pipe 220 is coupled. A heating device 230 for heating and melting the exhaust finishing frit 140a is disposed in the inner space of the exhaust head 210. For example, the heating device 230 may include a heater. The internal space of the exhaust head 210 forms a flow space for exhaust gas when performing an exhaust process.

The plate glass assemblies 110 and 120 are disposed under the exhaust head 210. In this case, the second plate glass 120 may be coupled to the lower portion of the exhaust head 210 so that the exhaust hole 125 may face the lower portion of the exhaust head 210.

The plate glass assemblies 110 and 120 may be provided with a vacuum pad 260 that enables close contact between the plate glass assemblies 110 and 120 and the exhaust closing device 200. As an example, the vacuum pad 260 may be attached to the upper surface of the plate glass assemblies 110 and 120, that is, the second plate glass 120, and may contact the bottom surface of the exhaust head 210.

The vacuum pad 260 is provided between the plate glass assemblies 110 and 120 and the exhaust closing device 200 to prevent gas from leaking to the outside of the exhaust head 210 during an exhaust process. For example, the vacuum pad 260 may include a graphit sheet or a metal member.

An exhaust finishing frit 140a is disposed or inserted in the exhaust hole 125 of the glass plate assembly 110 and 120. For example, at least a portion of the exhaust closing frit 140a may be inserted into the exhaust hole 125.

The exhaust hole 125 includes a first part 125a that is inclined downward from the upper surface of the second pane 120 and a second part 125b that is recessed downward from the first part 125a do. Due to the configuration of the first and second parts 125a and 125b, the exhaust hole 125 may have a stepped hole shape.

In addition, the exhaust finishing frit 140a may be supported on the first part 125a.

The exhaust finishing frit 140a includes a glass frit, and may be formed of a mold having a predetermined shape. In detail, the exhaust finishing frit 140a includes a frit body 141a having a cylindrical shape. The frit body 141a may have a body upper surface portion 142a on which the cap frit 145a is seated.

The frit body 141a includes a recessed portion 143a that is recessed upward from the bottom surface of the frit body 141a. The recessed part 143a forms a space through which gas inside the plate glass assemblies 110 and 120 is exhausted during the exhaust process.

The frit body 141a further includes an exhaust guide portion or a penetrating portion 144a formed through the outer circumferential surface of the frit body 141a and communicating with the recessed portion 143a. The exhaust guide part 144a may have a circular shape.

The gas exhausted through the depression 143a, that is, the exhaust gas flowing inside the frit main body 141a may be discharged in the radial direction of the exhaust finishing frit 140a through the exhaust guide part 144a. have.

A plurality of exhaust guide portions 144a may be formed on an outer peripheral surface of the frit body 141a. In detail, FIG. 5 shows a plurality of exhaust guide portions 144a formed on the frit body 141a when the outer circumferential surface of the frit body 141a is unfolded.

It is preferable that the cross-sectional area of the exhaust guide part 144a is not too large. When the cross-sectional area of the exhaust guide part 144a is too large, that is, when the size of the penetrating part of the exhaust guide part 144a is too large, the amount of the exhaust finishing frit 140a is small and the exhaust hole 125 The sealing effect of may be lowered. For example, the sum of the cross-sectional areas of the plurality of exhaust guide portions 144a is preferably formed to be 50% or less of the cross-sectional area of the outer circumferential surface of the frit body 141a.

The outer circumferential length of the frit body 141a, that is, the horizontal length of the developed view, is a first width (a), the vertical height of the frit body 141a is a second width (b), and the exhaust guide part 144a is When the diameter is defined as the third width (c) and the distance between the two closest exhaust guide parts 144a among the plurality of exhaust guide parts 144a is defined as the fourth width (d), the third width (c ) And the fourth width (d) must be at least 1mm or more.

When the third width c is less than 1 mm, the exhaust performance through the exhaust guide portion 144a may be reduced. And, when the fourth width (d) is less than 1 mm, it is difficult to maintain the shape of the exhaust finishing frit 140a, so that the production of the exhaust finishing frit 140a is not easy, and during the exhaust process, the exhaust finishing frit ( 140a) may be damaged.

The maximum size of the third width c may be b-2 (mm). In addition, the maximum allowable number of the exhaust guide portions 144a may be determined as (a/(c+1))-1.

The first width a may be determined based on the diameter d1 of the frit body 141a. The diameter d1 of the frit body 141a may be determined to be a size that can be stably supported in the exhaust hole 125.

The exhaust finishing frit 140a may be inserted into the upper end of the exhaust hole 125 and moved downward, and may be supported by the first part 125a. When the width of the upper end of the exhaust hole 125 is defined as the upper width w1 and the width of the lower end of the exhaust hole 125 is defined as the lower width w2, the upper width w1 is the lower width ( It may be formed larger than w2). In another aspect, the upper width w1 may be understood as the width of the upper end of the first part 125a, and the lower width w2 may be understood as the width of the second part 125b.

The diameter d1 of the frit body 141a may be smaller than the upper width w1 and larger than the lower width w2. If the diameter d1 of the frit body 141a is larger than the upper width w1, the exhaust closing frit 140a may not be easily inserted into the exhaust hole 125. In addition, if the diameter d1 of the frit body 141a is formed smaller than the lower width w2, the exhaust finishing frit 140a may be separated from the exhaust hole 125. Therefore, this embodiment can prevent this problem.

A cap frit 145a is installed above the exhaust finishing frit 140a. The cap frit 145a may be disposed between the exhaust finishing frit 140a and the support plate 450.

The cap frit 145a may have a circular plate shape and may be formed of a thin plate. Further, the cap frit 145a is formed of a glass frit, and may have a melting point higher than that of the exhaust finishing frit 140a.

The bottom surface of the cap frit 145a is disposed to contact the upper body portion 142a of the frit body 141a, and is configured to press the frit body 141a. That is, when the exhaust process is performed, the exhaust pressure is transmitted to the frit body 141a through the cap frit 145a, and in this process, the cap frit 145a is a frit body 141a composed of a frit made of glass. Is strongly pressed.

According to this operation, it is possible to prevent bubbles from being generated in the process of melting the frit body 141a when the subsequent finishing process is performed. The air bubbles are a factor causing leakage of the vacuum layer 180 after completion of the manufacture of the vacuum glass 10, and it is preferable not to occur.

The exhaust closing device 200 further includes a support plate 250 provided under the exhaust head 210 and pressing the cap frit 145a. That is, the support plate 250 may be disposed to be in contact with the upper surface of the cap frit 145a. In the process of performing the exhaust process, the support plate 250 may press the cap frit 145a downward to guide the cap frit 145a to press the exhaust closing frit 140a.

The support plate 250 performs a function of preventing thermal shock from being applied to the plate glass assemblies 110 and 120 according to a temperature deviation generated during the exhaust process and the finishing process. To this end, the support plate 250 may be made of a metal material, for example, a stainless material. In addition, the support plate 250 may be positioned between the heating device 230 and the exhaust holes 125 of the plate glass assemblies 110 and 120. The support plate 250 may be referred to as a “heat sink”.

In detail, the exhaust process may be performed in a temperature environment of about 300°C, and the finishing process may be performed in an environment of about 400°C. Further, the melting point of the exhaust finishing frit 140a may be greater than 300°C and less than 400°C.

When performing the exhaust process and the finishing process, when the temperature environment of each process is transferred to the plate glass assemblies 110 and 120 as it is, a thermal shock according to the temperature deviation occurs in the plate glass assemblies 110 and 120, and the plate glass assemblies 110 and 120 ) May be damaged. Therefore, the support plate 250 is configured to cover the upper side of the exhaust finishing frit 140a and the cap frit 145a, and high temperature heat is blocked from the support plate 250 so that the plate glass assemblies 110 and 120 It can reduce what is transmitted to.

As a result, since the support plate 250 can prevent heat transfer between the inner space of the exhaust head 210 and the plate glass assemblies 110 and 120, a thermal shock occurs in the plate glass assembly according to the temperature deviation during the exhaust process and the finishing process. Accordingly, it is possible to prevent the plate glass assembly from being damaged.

The support plate 250 includes a plate body 251 having a disk shape and a plate through portion 253 formed through the plate body 251 and providing a flow path for exhaust gas during an exhaust process. The plate body 251 pressurizes the cap frit 145a and prevents heat transfer from the exhaust head 210 to the plate glass assemblies 110 and 120.

The plate through part 253 may be formed in an approximately central portion of the plate body 251. The plate through part 253 may communicate with the through part 143a of the exhaust finishing frit 140a and the exhaust guide part 144a.

In addition, the exhaust closing device 200 further includes an elastic member 240 disposed in the inner space of the exhaust head 210 and providing an elastic force to the support plate 250. For example, the elastic member 240 may include a coil compression spring.

The exhaust head 210 includes a spring support part 215 supporting the elastic member 240. The spring support part 215 includes a support jaw provided on the inner surface of the exhaust head 210. The support jaw supports one side of the elastic member 240. In addition, the other side of the elastic member 240 may be supported on the upper surface of the support plate 250. With this arrangement, the elastic member 240 can press the support plate 250 downward, so that the support plate 250 presses the cap frit 145a, It allows the position to be stably fixed.

The elastic member 240 may be seated on the upper edge of the support plate 250. For example, the diameter of the elastic member 240 may be formed equal to the diameter of the support plate 250. In addition, the heating device 230 is disposed inside the elastic member 240 and may be positioned upward by a predetermined distance from the upper surface of the support plate 250.

The exhaust pipe 220 is disposed to be coupled through the exhaust head 210, and an exhaust pump 270 may be operably connected to the outside of the exhaust pipe 220. The exhaust pipe 220 may be coupled through a side portion of the exhaust head 210.

7 is a flow chart showing a method of manufacturing a vacuum glass according to the first embodiment of the present invention, and FIG. 8 is a view showing a state in which an exhaust process is performed in the exhaust finishing apparatus according to the first embodiment of the present invention. .

Referring to FIG. 7, a first plate glass 110 is provided. The first plate glass 110 may be provided in a washed state (S11).

A sealant 170 is applied to the first plate glass 110. The sealant 170 may be applied along the edge of the first plate glass 110. In addition, a spacer 130 may be installed on the upper surface of the first plate glass 110. A plurality of spacers 130 are provided, and may be arranged at predetermined intervals. The plurality of spacers 130 may protrude from the upper surface of the first pane 110 (S12).

On the upper side of the first pane 110, the second pane 120 may be covered. When the second pane 120 is disposed, an upper portion of the plurality of spacers 130 may support a lower surface of the second pane 120.

An exhaust hole 125 may be formed in the second plate glass 120. As described above, the exhaust hole 125 is understood as a configuration for forming the vacuum layer 180 by exhausting the gas existing between the first and second panes 110 and 120. In addition, the gas adsorbent 160 may be provided on the bottom of the second glass plate 120.

When the first and second panes 110 and 120 are assembled by the method described above, the assembly of the first and second panes 110 and 120 (hereinafter, the pane glass assembly) is heated, and in this process, the sealant 170 is melt-pressed to The edges of the 1,2 panes 110 and 120 may be sealed (S13).

The plate glass assembly (110, 120) is installed in the exhaust closing device (200). In detail, a vacuum pad 260 is coupled to an upper surface of the glass plate assembly 110 and 120, and a bottom surface of the exhaust head 210 may be in close contact with the upper surface of the vacuum pad 260.

A support plate 250 is provided below the exhaust head 210, and an elastic member 240 is coupled to an upper side of the support plate 250. An exhaust finishing frit 140a is positioned in the exhaust hole 125 of the plate glass assemblies 110 and 120, and a cap frit 145a is seated on the upper side of the exhaust closing frit 140a. In addition, the support plate 250 may be disposed to press the upper surface of the cap frit 145a (S14).

The exhaust pump 270 is connected to an exhaust pipe 220 coupled to the exhaust head 210, and the internal space of the exhaust head 210 may be heated to a temperature (about 300°C) for performing an exhaust process. . As an example, the temperature increase may be achieved by operating the heating device 230 or another heating device (heating furnace).

By driving the exhaust pump 270, the gas existing inside the glass plate assemblies 110 and 120 is exhausted, that is, an exhaust process is performed.

In detail, referring to FIG. 7, when the exhaust process is performed, the gas present in the glass pane assemblies 110 and 120 flows through the recessed portion 143a of the exhaust finishing frit 140a and the exhaust guide portion 144a. And, it flows into the inner space of the exhaust head 210 through the plate through part 253 of the support plate 250. In addition, the exhausted gas may be discharged to the exhaust pump 270 via the exhaust pipe 220 (S15).

After the exhaust process is completed, the heating device 230 is driven to melt the exhaust finishing frit 140a. When the heating device 230 is driven, heat of about 400° C. higher than the melting point of the exhaust finishing frit 140a may be applied to the exhaust finishing frit 140a. In addition, since the melting point of the cap frit 145a is formed to be greater than 400° C., melting of the cap frit 145a does not occur.

When the exhaust finishing frit 140a is melted, the melted exhaust finishing frit 140a forms the exhaust finishing material 140 to block the exhaust hole 125, and after cooling, the exhaust hole 125 can be sealed. have. In this process, the cap frit 145a constitutes the closing cap 145 to cover the upper side of the exhaust closing frit 140a, and may be in close contact with the plate glass assemblies 110 and 120. For example, in order to combine the cap frit 145a and the plate glass assemblies 110 and 120, a sealant may be applied to the cap frit 145a.

As another example, after the melting and cooling process, a separate cover member may be coupled to the upper side of the cap frit 145a, and the combined cover member may constitute the closing cap 145 (S16). .

By such a manufacturing method, the exhaust process and the finishing process of the plate glass assemblies 110 and 120 can be reliably implemented by a simple process.

Hereinafter, the second and third embodiments of the present invention will be described. Compared to the first embodiment, since these embodiments differ only in some configurations of the exhaust finishing device, the differences will be mainly described, and the description of the first embodiment and reference numerals are used for the same parts as the first embodiment. .

[Second Example]

9 is a view showing the configuration of an exhaust finishing frit according to a second embodiment of the present invention.

Referring to FIG. 9, the exhaust finishing frit 140a' according to the second embodiment of the present invention may be disposed in the exhaust hole 125 of the plate glass assemblies 110 and 120.

The exhaust finishing frit 140a' includes a frit body 141a' having a cylindrical shape. The frit body 141a' may have a body upper surface portion 142a' on which the cap frit 145a is seated.

The frit body 141a' includes a depression 143a' that is depressed upward from the bottom surface of the frit body 141a. The recessed part 143a' forms a space through which gas inside the plate glass assemblies 110 and 120 is exhausted during the exhaust process. For the description of the frit body 141a', the upper body portion 142a', and the concave portion 143a', the description of the first embodiment is used.

The frit body 141a' further includes an exhaust guide portion or a penetration portion 144a' formed through the outer circumferential surface of the frit body 141a' and communicating with the recessed portion 143a'. The exhaust guide part 144a may have a polygonal shape, for example a quadrangular shape.

The gas exhausted through the recessed portion 143a', that is, the exhaust gas flowing inside the frit body 141a' is in the radial direction of the exhaust closing frit 140a' through the exhaust guide portion 144a'. Can be discharged.

A plurality of exhaust guide portions 144a' may be formed on an outer peripheral surface of the frit body 141a'. It is preferable that the cross-sectional area of the exhaust guide part 144a' is not too large. When the cross-sectional area of the exhaust guide part 144a' is too large, that is, when the size of the penetrating portion of the exhaust guide part 144a' is too large, the amount of the exhaust finishing frit 140a' is small and the exhaust hole The sealing effect of 125 may be lowered. For example, the sum of the cross-sectional areas of the plurality of exhaust guide portions 144a is preferably formed to be 50% or less of the cross-sectional area of the outer circumferential surface of the frit body 141a.

The vertical height of the frit body 141a' is a second width (b), the vertical height of the exhaust guide portion 144a' is a fifth width (e), and the horizontal direction of the exhaust guide portion 144a' When the length is defined as the sixth width (f) and the interval between the two exhaust guide portions 144a' is the seventh width (g), the fifth width (e), the sixth width (f) and the seventh The width (g) must be formed at least 1mm or more.

When the fifth width e and the sixth width f are less than 1 mm, the exhaust performance through the exhaust guide portion 144a' may be reduced. And, when the seventh width (g) is less than 1 mm, it is difficult to maintain the shape of the exhaust finishing frit 140a', so that the production of the exhaust finishing frit 140a' is not easy, and the exhaust closing during the exhaust process A problem in that the frit 140a' is damaged may occur.

The maximum size of the fifth width e may be b-2 (mm). In addition, the maximum size of the sixth width f may be (a-4)/4 (mm). For the description of the first width a, the description of the first embodiment is used.

[Third Example]

10 is a cross-sectional view showing a state in which an exhaust finishing frit is mounted on a second plate glass according to a third embodiment of the present invention.

Referring to FIG. 10, the exhaust finishing device 200a according to the third embodiment of the present invention includes a second plate glass 120 having an exhaust hole 125 ′.

In detail, the exhaust hole 125 ′ includes a first part 125c extending obliquely downward from the upper surface of the second pane 120 and a second part extending horizontally from the first part 125c. (125d) and a third part (125e) extending downward from the second part (125d) are included. Due to the configuration of the first to third parts 125c, 125d, and 125e, the exhaust hole 125 ′ may have a stepped shape.

In the exhaust hole 125 ′, an exhaust finishing frit 140a ″ may be disposed. For the description of the exhaust finishing frit 140a'', a description of the exhaust finishing frit 140a in the first embodiment is used.

The exhaust finishing frit 140a'' may be supported on the second part 125d. That is, since the exhaust finishing frit 140a ″ is supported by the second part 125d extending flat in the horizontal direction, stable installation can be achieved.

The description of the exhaust process and the melting and finishing process using the exhaust finishing frit 140a'' refer to the description of FIG. 7.

10: vacuum glass 110: first plate glass
120: second plate glass 125: exhaust hole
130: spacer 140: exhaust finisher
140a: exhaust finish frit 141a: frit body
142a: upper body portion 143a: depression
144a: exhaust guide portion 145a: cap frit
145: exhaust cap 160: gas adsorbent
170: sealant 180: vacuum layer
200: exhaust closing device 210: exhaust head
220: exhaust pipe 230: heating device
240: elastic member 250: support plate
260: vacuum pad 270: exhaust pump

Claims (20)

A first glass and a second glass provided in a thin plate shape;
The first and second glasses are disposed to be spaced apart from each other, and a vacuum layer provided in the spaced apart from each other;
A sealing part provided between the first and second glasses;
An exhaust hole provided in the second glass; And
After performing an exhaust process in which gas between the first and second glasses is exhausted through the exhaust hole, an exhaust finishing material for sealing the exhaust hole is included,
An exhaust passage through which the gas between the first and second glasses moves is formed by the exhaust finishing frit disposed in the exhaust hole while the exhaust process is being performed,
The exhaust finishing frit includes a lower end portion that is supported in the exhaust hole and forms a depression through which exhaust gas is introduced and an upper end portion having an upper surface portion of the body,
The vacuum glass configured to shield the upper side of the recessed portion so that the exhaust pressure at the upper side of the exhaust closing frit acts on an upper end of the exhaust closing frit. The method of claim 1,
The exhaust hole penetrates from the top surface to the bottom surface of the second glass,
The vacuum glass having a lower end diameter of the exhaust closing frit is smaller than the upper end diameter of the exhaust hole and larger than the lower end diameter of the exhaust hole. The method of claim 1,
The exhaust hole,
A vacuum glass having an inner circumferential surface stepped from an upper end of the exhaust hole toward a lower end of the exhaust hole. The method of claim 3,
In the exhaust hole, a first part that is inclined downward from the upper surface of the second glass and a second part that is recessed downward from the first part are formed,
Vacuum glass supported by the first part at the lower end of the exhaust finishing frit. The method of claim 4,
The width of the upper end of the first part is larger than the width of the second part. The method of claim 3,
In the exhaust hole, a first part extending obliquely downward from the upper surface of the second glass, a second part extending horizontally from the first part, and a third part extending downward from the second part are formed. And
Vacuum glass supported by the second part at the lower end of the exhaust finishing frit. The method of claim 1
The exhaust finishing frit includes a frit body forming the upper surface of the body and the depression,
A vacuum glass through which an exhaust guide portion communicating with the recessed portion is formed on an outer peripheral surface of the frit body. The method of claim 7,
The vacuum glass provided with a plurality of the exhaust guide portion is formed in the circumferential direction of the frit body. The method of claim 7,
The vacuum glass formed on the outer circumferential surface of the frit body so that the exhaust guide portion has a circular or rectangular shape. The method of claim 1,
While the exhaust process is being performed, a cap frit covering an upper side of the exhaust finishing frit is provided,
The cap frit is a vacuum glass configured to have a diameter larger than the diameter of the upper body portion so as to completely cover the upper body portion. A first glass and a second glass provided in a thin plate shape;
The first and second glasses are disposed to be spaced apart from each other, and a vacuum layer provided in the spaced apart from each other;
A sealing part provided between the first and second glasses;
An exhaust hole provided in the second glass; And
After performing an exhaust process in which gas between the first and second glasses is exhausted through the exhaust hole, it includes an exhaust finishing material for sealing the exhaust hole,
An exhaust passage through which gas between the first and second glasses moves is formed by an exhaust finishing frit disposed in the exhaust hole while the exhaust process is being performed,
The exhaust finishing frit,
A frit body supported by the exhaust hole and including a lower end portion forming a recessed portion through which exhaust gas flows and an upper end portion acting on an exhaust pressure; And
It is formed on the outer circumferential surface of the frit body, and includes an exhaust guide portion communicating with the depression,
The exhaust guide part is a vacuum glass disposed to be spaced apart downward from the upper end of the frit body. The method of claim 11,
The exhaust guide part is a vacuum glass disposed upwardly from a lower end of the frit body. The method of claim 11,
The exhaust guide portion is formed in a plurality in the circumferential direction of the frit body,
The plurality of exhaust guide portions are formed at the same height with respect to the lower end of the frit body. The method of claim 11,
The exhaust hole has an inner circumferential surface on which the lower end of the frit body is supported,
The exhaust guide part is a vacuum glass that is higher than the lower end of the exhaust hole and lower than the upper end of the exhaust hole. The method of claim 11,
The exhaust closing frit is a vacuum glass in which a lower side of the exhaust passage is opened by the depression and an upper side of the exhaust passage is closed by the upper end portion. A first glass and a second glass provided in a thin plate shape;
The first and second glasses are disposed to be spaced apart from each other, and a vacuum layer provided in the spaced apart from each other;
A sealing part provided between the first and second glasses;
An exhaust hole provided in the second glass; And
After performing an exhaust process in which gas between the first and second glasses is exhausted through the exhaust hole, an exhaust finishing material for sealing the exhaust hole is included,
An exhaust passage through which the gas between the first and second glasses moves is formed by the exhaust finishing frit disposed in the exhaust hole while the exhaust process is being performed,
The exhaust finishing frit is supported in the exhaust hole, and includes a lower end forming a depression through which exhaust gas is introduced and an upper end through which exhaust pressure acts,
The exhaust hole is formed to penetrate from the upper end to the lower end of the second glass, and the lower end of the exhaust finishing frit is supported at a position closer to the lower end of the second glass than the upper end of the second glass. The method of claim 16,
The exhaust finishing frit is inserted into the exhaust hole,
The vacuum glass having a lower end diameter of the exhaust closing frit is smaller than the upper end diameter of the exhaust hole and larger than the lower end diameter of the exhaust hole. The method of claim 16,
The exhaust hole,
A vacuum glass having an inner circumferential surface stepped from an upper end of the exhaust hole toward a lower end of the exhaust hole. The method of claim 18,
In the exhaust hole, a first part that is inclined downward from the upper surface of the second glass and a second part that is recessed downward from the first part are formed,
Vacuum glass supported by the first part at the lower end of the exhaust finishing frit. The method of claim 18,
In the exhaust hole, a first part extending obliquely downward from the upper surface of the second glass, a second part extending horizontally from the first part, and a third part extending downward from the second part are formed. And
Vacuum glass supported by the second part at the lower end of the exhaust finishing frit.

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