Electric heating structure of hollow glass with notch
By setting up four conductive silver pastes at the hollow glass gap, the problem of uneven heating is solved, uniform heating and good defrost and defogging effect is achieved, and the manufacturing process is simplified and the risk of air leakage is reduced.
Patent Information
- Application Number
- CN202422093902.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-28
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-08-28
AI Technical Summary
Conventional insulating glasses heat unevenly at the notches, resulting in poor defrosting and defogging, and existing solutions increase manufacturing complexity and risk of air leakage.
Four strips of conductive silver paste are respectively set up at the upper and lower edges of the notch of the hollow glass to connect the positive and negative electrodes of the power supply, and an online coating process is used to make a conductive coating layer to ensure uniform current distribution.
A uniform heating of the notched area is achieved, the defrost and defogging effect is improved, the manufacturing process is simplified and the risk of air leakage is reduced.
Smart Images
Figure CN223119807U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of hollow glass, in particular to an electric heating structure of hollow glass with a gap. Background Art
[0002] Electric heated insulating glass has good heat insulation, sound insulation, defrosting and demisting effects. It is a new type of glass product that integrates energy saving, environmental protection and safety. In the field of food storage, electric heated insulating glass can be used in refrigerators, freezers, cold storage, etc. It can keep the glass surface dry and transparent, making it convenient for customers to purchase products.
[0003] Conventional insulating glass is generally rectangular, such as Figure 4 As shown, the principle of electric heating is to coat a conductive coating layer on the inner side of one of the glass sheets, and two conductive silver pastes 7 are arranged on the conductive coating layer at intervals on the left and right or up and down, one conductive silver paste 7 is connected to the positive pole of the power supply, and the other conductive silver paste 7 is connected to the negative pole of the power supply. The conductive coating layer between the two conductive silver pastes 7 forms a surface resistance, and after power is turned on, it generates heat evenly to achieve defrosting and defogging.
[0004] Some refrigeration cabinets with display screens use insulating glass with a notch on one side, such as Figure 5 As shown, the position of the notch 2 is used to install a display screen. The electrically heated insulating glass with a notch heats unevenly, resulting in frost or condensation in the upper and lower areas of the notch 2 (areas A and B in the figure). At present, the method adopted is to pre-embed the heating wire 8 around the notch 2. After the heating wire 8 is powered on, it heats up to assist in defrosting and defogging. However, the problem brought about by this is that the manufacturing process is complicated and the manufacturing cost is increased. In addition, two additional wires need to be led out, which will destroy the sealing of the original insulating glass and increase the risk of air leakage.
[0005] In view of this, it is necessary to improve the existing technology. Utility Model Content
[0006] The purpose of the utility model is to provide an electric heating structure of a hollow glass with a gap, aiming to solve at least one of the technical problems existing in the above-mentioned prior art. To achieve the above-mentioned purpose, the technical solution adopted is as follows:
[0007] An electric heating structure for a hollow glass with a notch, the hollow glass is formed by combining two pieces of glass with a hollow in the middle, the notch is located on the left or right side of the hollow glass, a conductive coating layer is provided on the inner side of one of the pieces of glass, and four strip-shaped conductive silver pastes are printed on the conductive coating layer in sequence from top to bottom. All four strip-shaped conductive silver pastes are arranged in the left-right direction. The first strip-shaped conductive silver paste is located near the upper edge of the glass, and one end of the first strip-shaped conductive silver paste is welded with a wire for connecting the positive electrode of the power supply. The second strip-shaped conductive silver paste is located near the upper edge of the notch, the third strip-shaped conductive silver paste is located near the lower edge of the notch, the fourth strip-shaped conductive silver paste is located near the lower edge of the glass, and one end of the fourth strip-shaped conductive silver paste is welded with a wire for connecting the negative electrode of the power supply.
[0008] Preferably, the length of the first strip-shaped conductive silver paste matches the left-right width of the upper edge of the glass.
[0009] Preferably, the length of the second strip-shaped conductive silver paste matches the left-right width of the upper edge of the notch.
[0010] Preferably, the length of the third strip-shaped conductive silver paste matches the left-right width of the lower edge of the notch.
[0011] Preferably, the length of the fourth strip-shaped conductive silver paste matches the left-right width of the lower edge of the glass.
[0012] Preferably, the conductive coating layer is made by an online coating process.
[0013] The beneficial effects of the present utility model compared with the prior art:
[0014] The electric heating structure of the hollow glass with a notch of the present utility model makes the current distribution on the conductive coating layer uniform by respectively arranging strip-shaped conductive silver pastes at the upper and lower edge positions of the notch, and then the heat generation is uniform, and thus has a good defrosting and defogging effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0016] Figure 1 It is a schematic diagram of the electric heating structure of the present utility model applied to a hollow glass with a notch.
[0017] Figure 2 It is a current distribution diagram of the existing electric heating structure of the hollow glass with a notch.
[0018] Figure 3 This is the current distribution diagram of the hollow glass electric heating structure with a notch in the present utility model.
[0019] Figure 4 This is a schematic diagram of an existing rectangular hollow glass electric heating structure.
[0020] Figure 5 This is a schematic diagram of an existing hollow glass electric heating structure with a notch.
[0021] In the figure: 1, hollow glass; 2, notch; 3, first strip-shaped conductive silver paste; 4, second strip-shaped conductive silver paste; 5, third strip-shaped conductive silver paste; 6, fourth strip-shaped conductive silver paste; 7, conductive silver paste; 8, heating wire. Specific embodiments
[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.
[0023] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", "connection", and "fixation" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.
[0024] As Figure 1 shown, a preferred embodiment of the present utility model provides an electric heating structure, which is applied to a hollow glass with a notch and is used for defrosting and defogging. Among them, the hollow glass 1 is formed by combining two pieces of glass with a hollow in the middle. A conductive coating layer is provided on the inner side surface of one piece of glass, which is specifically made by an online coating process. The other piece of glass is tempered glass. The four sides of the two pieces of glass are connected through a hollow spacer strip and in cooperation with butyl rubber and sealant. In addition, the notch 2 is located in the middle position on the right side of the hollow glass.
[0025] Four strip-shaped conductive silver pastes are printed on the inner side conductive coating layer of the online coating glass in sequence from top to bottom, namely the first strip-shaped conductive silver paste 3, the second strip-shaped conductive silver paste 4, the third strip-shaped conductive silver paste 5, and the fourth strip-shaped conductive silver paste 6.
[0026] The first strip-shaped conductive silver paste 3 is located near the upper edge of the glass and is arranged along the left-right direction, and its length matches the left-right width of the upper edge of the glass. One end of the first strip-shaped conductive silver paste 3 is welded with a wire, and the wire extends out from the side of the hollow glass for connecting to the positive pole of the power supply.
[0027] The second strip-shaped conductive silver paste 4 is located at the upper edge position close to the notch, arranged in the left-right direction, and its length matches the left-right width of the upper edge of the notch 2.
[0028] The third strip-shaped conductive silver paste 5 is located at the lower edge position close to the notch, arranged in the left-right direction, and its length matches the left-right width of the lower edge of the notch 2.
[0029] The fourth strip-shaped conductive silver paste 6 is located at the lower edge position close to the glass, arranged in the left-right direction, and its length matches the left-right width of the lower edge of the glass. One end of the fourth strip-shaped conductive silver paste 6 is welded with a wire, and the wire extends out from the side of the insulating glass for connecting the negative electrode of the power supply.
[0030] In the existing electric heating structure of the insulating glass with a notch, there are only two conductive silver pastes 7. Due to the existence of the notch 2, the right half of the insulating glass has a relatively large resistance, a relatively small current, and a relatively low heating power from top to bottom. As a result, the defrosting and de-fogging effect in this area is relatively poor. The current distribution of the conductive coating layer is as Figure 2 shown. In this embodiment, by adding the second strip-shaped conductive silver paste 4 and the third strip-shaped conductive silver paste 5, it can be regarded as dividing the conductive coating layer into two surface resistances, and the two surface resistances are connected in series through the conductive silver paste. The current distribution of the conductive coating layer is as Figure 3 shown, and the current distribution is relatively uniform. As a result, the heating is uniform, and thus it has a good defrosting and de-fogging effect.
[0031] In summary, for the electric heating structure of the insulating glass with a notch described in the embodiment of the present invention, by respectively arranging strip-shaped conductive silver pastes at the upper and lower edge positions of the notch, the current distribution on the conductive coating layer is made uniform, and thus the heating is uniform, and it has a good defrosting and de-fogging effect.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. An electric heating structure for a hollow glass with a notch, the hollow glass being formed by combining two pieces of glass with a hollow in between, the notch being located on the left or right side of the hollow glass, characterized in that A conductive coating layer is provided on the inner side of one piece of glass. Four strip-shaped conductive silver pastes are printed on the conductive coating layer in sequence from top to bottom. The four strip-shaped conductive silver pastes are all arranged in the left-right direction. The first strip-shaped conductive silver paste is located near the upper edge of the glass. One end of the first strip-shaped conductive silver paste is welded with a wire for connecting to the positive electrode of the power supply. The second strip-shaped conductive silver paste is located near the upper edge of the notch. The third strip-shaped conductive silver paste is located near the lower edge of the notch. The fourth strip-shaped conductive silver paste is located near the lower edge of the glass. One end of the fourth strip-shaped conductive silver paste is welded with a wire for connecting to the negative electrode of the power supply.
2. The electric heating structure of a hollow glass with a notch according to claim 1, characterized in that, The length of the first strip-shaped conductive silver paste matches the left-right width of the upper edge of the glass.
3. The electric heating structure of a hollow glass with a notch according to claim 1, characterized in that, The length of the second strip-shaped conductive silver paste matches the left-right width of the upper edge of the notch.
4. The electric heating structure of a hollow glass with a notch according to claim 1, characterized in that, The length of the third strip-shaped conductive silver paste matches the left-right width of the lower edge of the notch.
5. The electric heating structure of a hollow glass with a notch according to claim 1, characterized in that, The length of the fourth strip-shaped conductive silver paste matches the left-right width of the lower edge of the glass.
6. The electric heating structure of a hollow glass with a notch according to claim 1, characterized in that, The conductive coating layer is made by an in-line coating process.