RU198198U1 - GLASSWARE WITH ZONED ELECTRIC HEATED SURFACE - Google Patents

Abstract

The glass product comprises at least one K-glass with a one-sided conductive coating installed in the housing and strip-shaped current-conducting buses placed on opposite edges of the glass. The conductive coating of the glass consists of at least two zones arranged so that the lower electrical resistance has a zone in the lower part of the glass product when it is vertically oriented, and these zones at opposite edges of the glass are connected by busbars in parallel. The technical result is the exclusion of convective overheating during vertical placement of glass due to the zoning of the conductive coating. 4 s P. f-ly, 4 ill.

Description

The utility model relates to glassware with an electrically heated surface, which can be used as various heaters, when glazing buildings in industry and at home.

It is known that the design of glass includes at least one glass with an electrically heated conductive surface, usually transparent in the visible spectrum, with current leads applied to the conductive surface. Glass is placed in a frame-case with means for supplying and regulating electric current.

Various embodiments of such glassware are described. So, in patent RU 2540174 C1, LLC LASKOM, 02/10/2015, glassware with an electrically heated surface is described, containing a non-continuous cellular transparent conductive layer containing several sections. Each section in the electrically conductive layer has its own cell topology, which form conductive paths connected to current leads. This solution provides a uniform distribution of power of the heating elements and the creation of sections that provide heating with specified parameters. The possibility of using a cellular structure with regular hexagons adjacent to each other is indicated.

A glass ceiling heater made of K-glass is described (RU 190093 U1, Thermo Glass LLC, 06/18/2019), containing a continuous transparent conductive layer, divided into two zones connected in series. K-glass is placed in a steel frame frame, then mineral wool is tightly placed in the space between the ends and the inner wall of the frame frame, which ensures the glass is fixed in the frame frame. The heater does not assume heating of each of the sections with the given parameters.

In the patent (RU 184185 U1, LLC Thermo Glass, 10/18/2018), the infrared electric heater contains a housing made of two tempered K-glasses connected by a distance frame to form a tight space between the glasses, while the low-emission coating of the first glass is a conductive coating , on the surface of which current-carrying tires are applied, and the conductive coating of the first glass is made on the surface of the glass located inside the sealed space. The low-emission coating of the second glass is a reflective coating and is made on the surface of the glass located outside the sealed space.

Known translucent design with heating (RU 2510704 C2, Kostyuchenko, Sviridov, 04/10/2014 - prototype). It contains parallel outer glasses, inner glass, a conductive coating is applied to the inner surface of one of the outer glasses. At opposite edges of the outer glass, current-carrying tracks placed in the areas of insulating and bonding gaskets are sprayed. The design does not provide means for providing gradient heating of the fuel surface.

It is noted that during the operation of electrically heated windows and other equipment of electrically heated glass arranged vertically, there is a significant drawback. As a result of convection, the heat rises up and the glass becomes much hotter at the top, and the effect of a cold window is created in the lower part.

This utility model aims to eliminate this drawback in overheating, namely, to ensure uniform heating of vertically oriented glassware.

The patented glass product comprises at least one K-glass with a one-sided conductive coating installed in the housing and strip-type current-carrying buses placed on opposite edges of the glass. The conductive coating of the glass consists of at least two zones arranged so that the lower electrical resistance has a zone in the lower part of the glass when it is vertically oriented, and these zones at opposite edges of the glass are connected by busbars in parallel.

Glassware may be characterized in that said zones are formed by discontinuities in the conductive coating in the form of non-conductive hexagons, with a large area of discontinuities corresponding to greater electrical resistance of the zones.

The conductive coating can consist of three zones in which the non-conductive hexagons are made with dimensions and an arrangement period that ensures a change in the continuity of the conductive coating as 2.0: 1.64: 1.4.

On the side of the mount in the housing, the glass may have a gap in the continuity of the conductive coating in the form of a track along the contour of the glass profile, and also contain a second glass with a low emission coating, placed on the side of the conductive coating of the first glass, with the formation of the package.

The technical result of the utility model is to create a predetermined temperature gradient in the direction of decreasing the temperature from the bottom to the top of the glass, that is, essentially to increase the uniformity of heating in the vertical orientation of the product.

The essence of the utility model is illustrated in the drawings, where:

FIG. 1 is an example of a topology of a conductive coating of glass for three heating zones;

FIG. 2 - double-glazed window, section;

FIG. 3 - temperature distribution for non-zoned coating;

FIG. 4 is the same as in FIG. 3 - for coverage with three zones.

In FIG. 1 shows an example of a topology of a conductive glass coating for three heating zones.

K-glass 1 with a one-sided conductive coating 2 contains conductive busbars 3.4 in the form of strips located on opposite edges 5 of glass 1. The conductive coating 2 of the glass consists of several at least two zones. In FIG. Figure 1 shows an example for three zones 21, 22, 23, arranged so that the greater electrical resistance has zone 21 in the upper part of the glass with its working vertical orientation, and the lower electrical resistance has zone 23. These zones 21, 22, 23 have opposite edges 5 glasses are connected by busbars 3, 4 in parallel. Accordingly, with a constant voltage on the tires 3, 4, the heat dissipation will be the less, the greater the electrical resistance of the conductive coating 2.

Zones 21, 22, 23 are formed by discontinuities in the conductive coating in the form of non-conductive hexagons, while a large area of discontinuities corresponds to a greater electrical resistance of the zones. The organization of a given coating topology is carried out by laser processing according to a known technique.

The calculation of electrical resistance is described in RU 2540174, and can also be determined experimentally.

On the attachment side in the housing 6, the glass 1 may have a continuity gap of the conductive coating in the form of a track 7 of width G along the contour of the glass profile 1. The glass product may comprise a second glass 8 with a low emission coating 9 located on the side of the conductive coating 2 of glass 1, with the formation of a packet ( Fig. 2).

Calculation example for a gradient wall / floor heater consisting of three zones.

Initial data - glass size: length 900, width 500 mm. Surface resistivity R = 16 Ohm / sq.m. The required power of the product is P = 1 kW. Operating voltage U = 220V.

For this glass, when applying voltage U = 220V, the power of the product is 1.680 kW. Accordingly, to obtain the required power of the product P = 1 kW, it is necessary to reduce the power by 1.68 times.

This can be achieved by performing three parallel-connected zones with a change in electrical resistance from bottom to top from a lower resistance to a larger one.

Accordingly, the ratio of the coverage continuity of zone 21 (lower electrical resistance) to the continuity of coverage of zone 22 and the continuity of coating of zone 23 (higher electrical resistance) is 1.4: 1.64: 2.0. That is, the average power reduction coefficient is (2 + 1.64 + 1.4) / 3 = 1.68.

Thus, the glass product ensures the achievement of a technical result - the exclusion of convective overheating during vertical placement of the glass product due to the recommended zoning of the conductive coating.

Claims (6)

1. Glassware with an electrically heated surface, comprising at least one K-glass with a one-sided conductive coating installed in the housing and strip-type current-conducting buses placed on opposite edges of the glass, characterized in that the conductive coating of the glass consists of at least two zones arranged so that the lower electrical resistance has a zone in the lower part of the glass when it is oriented vertically, and these zones at opposite edges of the glass are connected by busbars in parallel. 2. The glassware according to claim 1, characterized in that the said zones are formed by discontinuities in the conductive coating in the form of non-conductive hexagons, with a large area of discontinuities corresponding to greater electrical resistance of the zones. 3. The glass product according to claim 2, characterized in that the conductive coating consists of three zones in which the non-conductive hexagons are made with dimensions and an arrangement period that ensures a change in the continuity of the conductive coating as 2.0: 1.64: 1.4. 4. The glass product according to claim 1, characterized in that the glass on the fastening side in the housing has a continuity gap in the conductive coating in the form of a track along the contour of the glass profile. 5. The glass product according to claim 1, characterized in that it contains a second glass with a low emission coating, placed on the side of the conductive coating of the first glass, with the formation of the package.

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