CN115853397A - Vacuum refrigerator door and preparation method thereof - Google Patents

Abstract

The vacuum refrigerator door of the present invention is an ultra-thin structure with a thickness of 15-26 mm, which can effectively reduce the volume of the refrigerator; the use of Low-E glass and the vacuum insulation gap between the double-layer glass can effectively avoid the heat loss between the inside and outside of the refrigerator. Exchange, effectively improve the thermal insulation performance of the refrigerator door, the central thermal conductivity can be as low as 0.003 ~ 0.004W/m K; spraying nano-liquid glass film on the outside of the Low-E glass can further improve the heat insulation and sound insulation effect , while optimizing the strength of the glass panel; the polyphenylene sulfide plastic sealing frame can achieve good adhesion to the glass panel, which is helpful for the long-term maintenance of the vacuum gap; the design of the transparent glass door body can be achieved without consuming additional energy It helps users find target ingredients efficiently and accurately, saving energy and reducing consumption; it can also provide users with a superior sense of openness and additional display area; compared with stainless steel doors, glass doors are not easy to dent or scratch, and are more convenient to clean.

Description

A kind of vacuum refrigerator door and preparation method thereof

technical field

The invention belongs to the technical field of refrigerator preparation, and in particular relates to a vacuum refrigerator door and a preparation method thereof.

Background technique

Refrigerators have obviously become an indispensable electrical device in many homes and even offices. In recent years, energy saving and environmental protection have become the most concerned issues of people. Existing refrigerator doors are mostly made of stainless steel, and polyurethane foam is usually filled inside the shell to form insulation materials. In order to ensure the foaming effect of polyurethane foam, it is necessary to customize the molding for positioning the shell and sealing the splicing gap of the shell according to different refrigerator door shells. Mold, thus increasing the production cost. Moreover, when installing and disassembling the refrigerator door shell, the positioning parts or edges and corners on the forming mold are easy to scratch the shell, thereby affecting the appearance quality of the product. Moreover, the existing foaming process is prone to cavitation or bubble leakage, which not only affects the heat preservation effect, but also affects the appearance of the product. In addition, this kind of opaque refrigerator door will greatly increase the time for users to find the target ingredients, thereby increasing the number of times and opening time of the refrigerator door. Opening the refrigerator door so frequently and for a long time will undoubtedly increase the cooling load of the refrigerator and increase the Refrigerator power consumption.

Existing refrigerators are provided with perspective windows on the refrigerator door body in order to display the internal environment of the refrigerator. In order to achieve the heat preservation effect, the see-through window usually uses double-layer glass, and an inert gas is injected between the double-layer glass to make a vacuum state between the two layers of glass, so that the refrigerator door can achieve the effect of heat preservation and heat insulation. However, this kind of double-layer glass often has the phenomenon of condensation and dripping due to poor sealing performance. The entry of air and water vapor will significantly increase the thermal conductivity of the refrigerator door, thereby greatly affecting the insulation performance of the refrigerator.

Contents of the invention

Aiming at the problems raised by the background technology, the present invention researches and designs a vacuum refrigerator door and its preparation method. A vacuum refrigerator door and a method for making the same.

Technical solution of the present invention:

A vacuum refrigerator door, which is composed of double-layer glass, a plastic sealing frame at the edge of the glass, and a vacuum heat insulation gap. The gap between the vacuum and heat insulation can be effectively improved after vacuum treatment.

The thickness of the vacuum heat insulation gap is 5-10 mm.

The double-layer glass is Low-E glass, and the thickness of each layer is 5-8 mm.

The thickness of the plastic sealing frame at the edge of the glass is 5-10mm, which is consistent with the thickness of the vacuum heat insulation gap.

The inner surface of the double-layer glass is coated with multi-layer silver reflective film, which can realize the characteristics of high transmission of visible light and high reflection of mid- and far-infrared rays, so that compared with ordinary glass and traditional architectural coated glass, it can maintain Good light transmission while still having excellent heat insulation effect.

The outer surface of the double-layer glass is coated with a nano-liquid glass film, which effectively improves the strength of the glass and also has functions such as heat insulation, noise reduction, and ultraviolet protection.

The material of the plastic sealing frame at the edge of the glass is polyphenylene sulfide plastic, which has high bonding strength and is supplemented by an infrared heating ring to show excellent adhesion to the glass after softening, which can realize double-layer The high airtightness between the glass is conducive to maintaining the long-term stability of the vacuum, so as to achieve a better heat insulation effect.

A method for preparing a vacuum refrigerator door, comprising the following steps:

(1) Prepare the plastic sealing frame at the edge of the glass, the shape of the outer frame is consistent with the glass plate of the double-glazed glass, and the thickness is consistent with the vacuum insulation gap;

(2) Lay the inner glass of the double-glazed glass flat, and place the plastic sealing frame on the edge of the glass;

(3) After buckling the outer glass, place it in a vacuum chamber as a whole, close the lid of the vacuum chamber, and evacuate to 0.0008-0.001Pa;

(4) Press the vertical plate up and down on the outer glass, and buckle the infrared heating ring around the plastic sealing frame at the edge of the glass, and the heating temperature is 200~

300℃, hold pressure for 30s~60s;

(5) Unload the infrared heating ring, matching vertical plate and vacuum chamber in sequence, and take out the glass plate.

Beneficial effects of the present invention: the vacuum refrigerator door of the present invention is an ultra-thin structure with a thickness of 15-26 mm, which can effectively reduce the volume of the refrigerator; the use of Low-E glass and the vacuum insulation gap between double-layer glass can effectively avoid The heat exchange between the inside and outside of the refrigerator can effectively improve the thermal insulation performance of the refrigerator door, and its central thermal conductivity can be as low as 0.003-0.004W/m K; spraying nano-liquid glass film on the outside of the Low-E glass can further Improve the effect of heat insulation and sound insulation, while optimizing the strength of the glass panel; the polyphenylene sulfide plastic sealing frame can achieve good adhesion with the glass panel, which is helpful for the long-term maintenance of the vacuum gap; the design of the transparent glass door can be realized in the Without consuming extra energy, it helps users find the target ingredients efficiently and accurately, which can effectively reduce the extra power loss caused by frequent and long-term opening of the refrigerator door, saving energy and reducing consumption; the design of the transparent glass door can also provide users with superior openness At the same time, the light source in the refrigerator can illuminate dark corners through the vacuum glass door; compared with the stainless steel door body, the glass door body is not easy to dent or scratch, and it is more convenient to clean.

Description of drawings

Fig. 1 is a structural schematic diagram of a vacuum refrigerator door of the present invention.

Fig. 2 is an assembly drawing of a refrigerator equipped with the vacuum refrigerator door.

Among them: 1 and 7 are Low-E glass, 2 is the plastic sealing frame at the edge of the glass, 3 and 4 are the multi-layer silver reflective film coated on the inner surface of the double-layer glass, 5 and 6 are the coated silver on the outer surface of the double-layer glass Nano liquid glass membrane.

Detailed ways

In order to facilitate those skilled in the art to understand the technical solution of the present invention, the technical solution of the present invention will be further described in conjunction with the accompanying drawings and embodiments.

Example 1

Referring to Figure 1, 1 and 7 in the figure are Low-E glass, 2 is the plastic sealing frame at the edge of the glass, 3 and 4 are the multi-layer silver reflective film coated on the inner surface of the double-layer glass, and 5 and 6 are the outer surface of the double-layer glass. Nano liquid glass film coated on the surface.

A vacuum refrigerator door, consisting of double-layer glass (1, 7), a plastic sealing frame 2 at the edge of the glass, and a vacuum insulation gap, the vacuum insulation gap is located between the double-layer glass (1, 7), and the plastic sealing frame 2 at the edge of the glass The connecting frame 2 is used to realize the sealing between the double-layer glass (1, 7). After vacuum treatment, a vacuum heat insulation gap can be formed to effectively improve the thermal insulation performance. The thickness of the vacuum heat insulation gap is 5mm, and the double-layer glass is Low -E glass, the single layer thickness is 5mm, the inner surface of the double-layer glass is coated with multi-layer silver reflective film (3, 4), the outer surface of the double-layer glass is coated with nano-liquid glass film (5, 6), the edge of the glass is plastic The sealing frame 2 is made of polyphenylene sulfide plastic.

A method for preparing a vacuum refrigerator door, comprising the steps of:

(1) Prepare the plastic sealing frame at the edge of the glass. The shape and size of the outer frame should be consistent with the size of the glass plate of the double-layer glass, and the thickness is 5mm. In order to achieve a better fit with the glass plate, the plastic sealing frame at the edge of the glass should be Polyphenylene sulfide plastic is selected, which shows good bonding performance with the glass plate after softening at high temperature;

(2) Place the inner Low-E glass plate horizontally on the working plane, place the plastic sealing frame on the edge of the glass parallel to it, and strictly align the edges;

(3) Buckle the outer Low-E glass plate on the plastic sealing frame, and attach it without external pressure before this step;

(4) Place the completed overall door body structure in a vacuum chamber for vacuum treatment. After placing, check whether there is any misalignment between the plastic sealing frame at the edge of the glass and the double-layer glass plate, and adjust it in time if necessary. ;

(5) Close the vacuum chamber, use the small gap between the glass edge plastic sealing frame and the Low-E glass plate to vacuum the refrigerator door structure, and turn off the machine when the internal vacuum reaches 0.001Pa;

(6) After the vacuum treatment is completed, press down the vertical plate on the outer Low-E glass to prepare for high temperature softening treatment;

(7) Heat the infrared heating ring with a matching size around the plastic sealing frame around the glass edge to 300°C, and hold the pressure for 60s under the pressure of the vertical plate. This process can effectively remove the plastic sealing frame before vacuum treatment. The tiny pores between the glass plates enable seamless bonding between the plastic sealing frame at the edge of the glass and the Low-E glass plate, avoiding air inflow, and is conducive to the long-term maintenance of the vacuum between the double-layer glass;

(8) After the plastic sealing frame at the edge of the glass is completely cooled, the preparation is completed, and the infrared heating ring, vertical plate and vacuum chamber are unloaded in sequence;

(9) Take out the glass plate to obtain the vacuum refrigerator door of the present invention.

Example 2

Referring to Figure 1, 1 and 7 in the figure are Low-E glass, 2 is the plastic sealing frame at the edge of the glass, 3 and 4 are the multi-layer silver reflective film coated on the inner surface of the double-layer glass, and 5 and 6 are the outer surface of the double-layer glass. Nano liquid glass film coated on the surface.

A vacuum refrigerator door, consisting of double-layer glass (1, 7), a plastic sealing frame 2 at the edge of the glass, and a vacuum insulation gap, the vacuum insulation gap is located between the double-layer glass (1, 7), and the plastic sealing frame 2 at the edge of the glass The connecting frame 2 is used to realize the sealing between the double-layer glass (1, 7). After vacuum treatment, the vacuum heat insulation gap can effectively improve the thermal insulation performance. The thickness of the vacuum heat insulation gap is 10mm, and the double-layer glass is Low -E glass, the thickness of single layer is 8mm, the inner surface of the double-layer glass is coated with multi-layer silver reflective film (3, 4), the outer surface of the double-layer glass is coated with nano-liquid glass film (5, 6), and the edge of the glass is plastic The sealing frame 2 is made of polyphenylene sulfide plastic.

A method for preparing a vacuum refrigerator door, comprising the steps of:

(1) Prepare the plastic sealing frame at the edge of the glass. The shape and size of the outer frame should be consistent with the size of the glass plate of the double-layer glass, and the thickness is 10mm. In order to achieve a better fit with the glass plate, the plastic sealing frame at the edge of the glass should be Polyphenylene sulfide plastic is selected, which shows good bonding performance with the glass plate after softening at high temperature;

(2) Place the inner Low-E glass plate horizontally on the working plane, place the plastic sealing frame on the edge of the glass parallel to it, and strictly align the edges;

(3) Buckle the outer Low-E glass plate on the plastic sealing frame, and attach it without external pressure before this step;

(4) Place the completed overall door body structure in a vacuum chamber for vacuum treatment. After placing, check whether there is any misalignment between the plastic sealing frame at the edge of the glass and the double-layer glass plate, and adjust it in time if necessary. ;

(5) Close the vacuum chamber, use the tiny gap between the plastic sealing frame at the edge of the glass and the Low-E glass plate to carry out vacuum treatment on the refrigerator door structure, and turn off the machine when the internal vacuum reaches 0.0008Pa;

(6) After the vacuum treatment is completed, press down the vertical plate on the outer Low-E glass to prepare for high temperature softening treatment;

(7) Heat the infrared heating ring with a matching size around the plastic sealing frame around the glass edge to 200°C, and hold the pressure for 30s under the pressure of the vertical plate. This process can effectively remove the plastic sealing frame before vacuum treatment. The tiny pores between the glass plates enable seamless bonding between the plastic sealing frame at the edge of the glass and the Low-E glass plate, avoiding air inflow, and is conducive to the long-term maintenance of the vacuum between the double-layer glass;

(8) After the plastic sealing frame at the edge of the glass is completely cooled, the preparation is completed, and the infrared heating ring, vertical plate and vacuum chamber are unloaded in sequence;

(9) Take out the glass plate to obtain the vacuum refrigerator door of the present invention.

Example 3

Referring to Figure 1, 1 and 7 in the figure are Low-E glass, 2 is the plastic sealing frame at the edge of the glass, 3 and 4 are the multi-layer silver reflective film coated on the inner surface of the double-layer glass, and 5 and 6 are the outer surface of the double-layer glass. Nano liquid glass film coated on the surface.

A vacuum refrigerator door, consisting of double-layer glass (1, 7), a plastic sealing frame 2 at the edge of the glass, and a vacuum insulation gap, the vacuum insulation gap is located between the double-layer glass (1, 7), and the plastic sealing frame 2 at the edge of the glass The joint frame 2 is used to realize the sealing between the double-layer glass (1, 7). After vacuum treatment, a vacuum heat insulation gap can be formed to effectively improve the thermal insulation performance. The thickness of the vacuum heat insulation gap is 8mm, and the double-layer glass is Low -E glass with a thickness of 7mm, the inner surface of the double-layer glass is coated with multi-layer silver reflective film (3, 4), the outer surface of the double-layer glass is coated with nano-liquid glass film (5, 6), and the edge of the glass is sealed with plastic Frame 2 is made of polyphenylene sulfide plastic.

A method for preparing a vacuum refrigerator door, comprising the steps of:

(1) Prepare the plastic sealing frame at the edge of the glass. The shape and size of the outer frame should be consistent with the size of the glass plate of the double-layer glass, and the thickness is 8mm. In order to achieve a better fit with the glass plate, the plastic sealing frame at the edge of the glass should be Polyphenylene sulfide plastic is selected, which shows good bonding performance with the glass plate after softening at high temperature;

(2) Place the inner Low-E glass plate horizontally on the working plane, place the plastic sealing frame on the edge of the glass parallel to it, and strictly align the edges;

(3) Buckle the outer Low-E glass plate on the plastic sealing frame, and attach it without external pressure before this step;

(4) Place the completed overall door body structure in a vacuum chamber for vacuum treatment. After placing, check whether there is any misalignment between the plastic sealing frame at the edge of the glass and the double-layer glass plate, and adjust it in time if necessary. ;

(5) Close the vacuum chamber, use the tiny gap between the plastic sealing frame at the edge of the glass and the Low-E glass plate to carry out vacuum treatment on the refrigerator door structure, and turn off the machine when the internal vacuum reaches 0.0009Pa;

(6) After the vacuum treatment is completed, press down the vertical plate on the outer Low-E glass to prepare for high temperature softening treatment;

(7) Heat the infrared heating ring with matching size around the plastic sealing frame around the glass edge to 250°C, and hold the pressure for 40s under the pressure of the vertical plate. This process can effectively remove the plastic sealing frame before vacuum treatment. The tiny pores between the glass plates enable seamless bonding between the plastic sealing frame at the edge of the glass and the Low-E glass plate, avoiding air inflow, and is conducive to the long-term maintenance of the vacuum between the double-layer glass;

(8) After the plastic sealing frame at the edge of the glass is completely cooled, the preparation is completed, and the infrared heating ring, vertical plate and vacuum chamber are unloaded in sequence;

(9) Take out the glass plate to obtain the vacuum refrigerator door of the present invention.

The vacuum refrigerator door of the present invention is an ultra-thin structure with a thickness of 15-26mm, which can effectively reduce the volume of the refrigerator; the use of Low-E glass and the vacuum insulation gap between the double-layer glass can effectively avoid heat loss between the inside and outside of the refrigerator. Exchange, effectively improve the thermal insulation performance of the refrigerator door, its central thermal conductivity can be as low as 0.003 ~ 0.004W/m K; spraying nano-liquid glass film on the outside of Low-E glass can further improve the heat insulation and sound insulation effect , while optimizing the strength of the glass panel; the polyphenylene sulfide plastic sealing frame can achieve good adhesion to the glass panel, which is helpful for the long-term maintenance of the vacuum gap; the design of the transparent glass door body can be achieved without consuming additional energy It helps users find the target ingredients efficiently and accurately, which can effectively reduce the extra power loss caused by frequent and long-term opening of the refrigerator door, saving energy and reducing consumption; the design of the transparent glass door can also provide users with a superior sense of openness and additional display area , At the same time, the light source in the refrigerator can illuminate dark corners through the vacuum glass door; compared with the stainless steel door body, the glass door body is not easy to dent or scratch, and it is more convenient to clean.

The above is only the specific implementation of the present invention, but the design concept of the present invention is not limited thereto, and any insubstantial changes made to the present invention by using this concept shall be an act of violating the scope of protection of the present invention. However, as long as the content of the technical solution of the present invention is not deviated from, any form of simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention still belongs to the protection scope of the technical solution of the present invention.

Claims (8)

1. A vacuum refrigerator door, characterized in that: it is composed of double-layer glass, a plastic sealing frame at the edge of the glass, and a vacuum insulation gap, the vacuum insulation gap is located between the double-layer glass, and the plastic sealing frame at the edge of the glass is used In order to realize the sealing between the double-layer glass, the vacuum heat insulation gap can be formed after vacuum treatment, which can effectively improve the heat insulation performance. 2 . A vacuum refrigerator door according to claim 1 , wherein the thickness of the vacuum insulation gap is 5-10 mm. 3. A vacuum refrigerator door according to claim 1, characterized in that: the double-layer glass is Low-E glass, and the thickness of each single layer is 5-8 mm. 4 . A vacuum refrigerator door according to claim 1 , wherein the thickness of the plastic sealing frame at the edge of the glass is 5-10 mm, which is consistent with the thickness of the vacuum insulation gap. 5. A vacuum refrigerator door as claimed in claim 1, characterized in that: the inner surface of the double-layer glass is coated with multi-layer silver reflective film, which can realize the characteristics of high transmission of visible light and high reflection of middle and far infrared rays, Compared with ordinary glass and traditional architectural coated glass, it can maintain good light transmission and still have excellent heat insulation effect. 6. A vacuum refrigerator door as claimed in claim 1, characterized in that: the outer surface of the double-layer glass is coated with a nano-liquid glass film, which effectively improves the strength of the glass and also has the functions of heat insulation, noise reduction, and UV protection. . 7. A vacuum refrigerator door according to claim 1, characterized in that: the material of the plastic sealing frame at the edge of the glass is polyphenylene sulfide plastic, and the bonding strength of polyphenylene sulfide plastic is high, and it is softened by an infrared heating ring Afterwards, it exhibits excellent bonding force with the glass, which can achieve a high degree of sealing between double-layer glass, which is conducive to maintaining the long-term stability of the vacuum state, so as to achieve a better heat insulation effect. 8. Prepare a vacuum refrigerator door as claimed in claim 1, characterized in that: comprising the following steps: (1) Prepare the plastic sealing frame at the edge of the glass, the shape of the outer frame is consistent with the glass plate of the double-glazed glass, and the thickness is consistent with the vacuum insulation gap; (2) Lay the inner glass of the double-glazed glass flat, and place the plastic sealing frame on the edge of the glass; (3) After buckling the outer glass, place it in a vacuum chamber as a whole, close the lid of the vacuum chamber, and evacuate to 0.0008-0.001Pa; (4) Press vertical plates up and down on the outer glass, buckle infrared heating rings around the plastic sealing frame at the edge of the glass, heat at 200-300°C, and hold the pressure for 30s-60s; (5) Unload the infrared heating ring, matching vertical plate and vacuum chamber in sequence, and take out the glass plate.

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