CN203203267U - All-glass vacuum flat plate collector - Google Patents

Abstract

The utility model is an all-glass vacuum flat plate heat collector, which belongs to the field of solar energy application. The solar energy utilization efficiency of the vacuum tube collector is too low, and the flat plate collector is only covered with a layer of glass, and the heat preservation effect is poor. The feature of this technology is: the heat collector is all made of glass, the heat exchange plate (1) is fixed in the middle of the support of the flat box (2), and the box cover (3) makes the space between the heat exchange plate and the flat box a closed space , extract the air, make the upper and lower sides of the heat exchange plate (1) become a vacuum insulation layer, and insert the nozzle of the common flow pipe (4) into the exhaust pipe of the heat exchange plate (1) to become an all-glass vacuum flat heat collector device. The above-mentioned components are formed by extruding the hot-melt glass with an extruder and a mould, and the extrusion is convenient for continuous mass production. The heat collector has simple structure, cheap glass, good vacuum insulation, high thermal efficiency and low cost.

Description

All glass vacuum flat plate collector

technical field

The utility model belongs to the application field of solar energy, in particular to a solar water heater. the

Background technique

Solar water heaters are divided into two categories: vacuum tube water heaters and flat plate water heaters. Vacuum tube water heaters are vacuum insulated, good heat preservation, water temperature can reach more than 90 degrees, and can produce hot water in winter, so the products sell well and occupy 90% of the domestic market. . However, there is a large distance between the vacuum tube and the vacuum tube, the solar energy utilization efficiency on the occupied area is too low, and it cannot be installed on the wall, it is difficult to integrate with the building, and it does not meet the needs of green buildings; the heat collection of flat water heaters The collector is called a flat plate collector, which is composed of a box body and a heat exchange plate. Insulation material is set in a box body, and a copper-aluminum composite heat exchange plate is set on the insulation material, and a glass cover is covered on the top. Because copper and aluminum are precious metals, the material cost is high; because there is only one layer of glass on the board core, the thermal insulation effect is poor, the temperature of hot water cannot be raised, and the thermal efficiency is low; It is convenient to install on the wall, and it cannot be better integrated with the building. the

Contents of the invention

The purpose of the utility model is to provide a solar heat collector with better heat preservation, higher thermal efficiency, low cost, light and thin, and better integrated with buildings. the

The solution is: a flat plate collector composed of a box body and a heat exchange plate, which is characterized in that: the vacuum plate heat collector is composed of a heat exchange plate, a flat box, a box cover and a common flow tube; the heat exchange plate, the flat box , the box cover and the co-flow tube are all made of glass material; the glass material is hot-melted and extruded with an extruder and a mold; the heat exchange plate is composed of a plurality of parallel arranged tubes to form a tube sheet; the upper surface of the heat exchange plate Make a selective absorption coating; there are supports on the inner wall of the flat box; the support and the flat box are homogeneously integrated; the heat exchange plate is set in the middle of the upper and lower supports in the flat box; on the tube; the box cover is set at both ends of the flat box; the gap between the box cover and the heat exchange plate and the flat box is sealed, and the air is pumped through the air hole, so that the space between the heat exchange plate and the flat box becomes a vacuum heat insulation layer, Seal the exhaust hole; the common flow pipe is sparse; the common flow pipe has a number of nozzles corresponding to the row pipes of the heat exchange plate; the nozzles of the common flow pipe are inserted into the ends of the row pipes at both ends of the heat exchange plate, and the insertion is sealed. The gap at the place becomes an all-glass vacuum flat plate collector. the

The upper and lower layers of the heat exchange plate of the all-glass vacuum flat collector are vacuum layers, the vacuum insulation effect is better, the heat loss is reduced, the working temperature of the collector is effectively increased, and the thermal efficiency is improved; the collector is all made of glass materials, and the material cost is low. Low cost; the parts are all extruded by molds and extruders, the equipment is simple, and it is convenient for continuous mass production, and the manufacturing cost is low; without insulation materials, the collector is lighter and thinner, which is convenient for installation on the wall and more Easy to integrate with building. the

Description of drawings

Figure 1. Schematic diagram of the heat exchange plate of an all-glass vacuum flat collector. the

Figure 2. Schematic diagram of the flat box of the all-glass vacuum flat collector. the

Figure 3. Schematic diagram of the cover of the all-glass vacuum flat plate collector. the

Figure 4 is a schematic diagram of the common flow tube of the all-glass vacuum flat collector. the

Figure 5. Schematic diagram of an all-glass vacuum flat panel collector. the

Detailed ways

The specific embodiment of the utility model is described below in conjunction with accompanying drawing, according to the structure of the all-glass vacuum flat plate heat collector described in summary of the invention and accompanying drawing, design heat exchange plate (1), flat box (2) and lid (3 ) and the common flow tube (4) and other parts processing drawings, according to the processing drawings to obtain the shape and size of each part design and manufacture molds, after the glass material is hot-melted, extrude and cool with an extruder or a vacuum extruder and a mold respectively to form Heat exchange plate (1), flat box (2) and box cover (3) and common flow pipe (4). The glass material refers to glass, waste glass or glass raw material. The heat exchange plate (1) is composed of rows of tubes. There are two types of arrangement of the tubes: dense arrangement and sparse arrangement. It is a glass ribbon, and the glass ribbon and the row pipe are formed into one at the same time. The shape of the row pipe can be designed as circular, circular, square, etc. The width of the heat exchange plate (1) can be greater than 1 meter, and the length can be greater than 3 meters. If the flat plate heat collector is used for the wall and doubles as a glass power wall, it can be determined with reference to the floor height of the building. The support on the inner surface of the flat box (2) is also integrally formed simultaneously with the flat box (2). The support has several shapes such as ribbon, also called wing shape, columnar and point-like protrusions. Supports can also be made on the upper and lower sides of the heat exchange plate (1). The flat box (2) is slightly shorter and wider than the heat exchange plate (1). Make a selective absorption coating on the upper surface of the heat exchange plate (1); clamp the heat exchange plate (1) in the middle of the upper and lower supports in the flat box; the support is the row pipe supported on the heat exchange plate (1) Put the lid (3) on both ends of the flat box (2); use low-melting glass powder to weld the gap between the lid (3) and the flat box (2) and the heat exchange plate (1) To seal it, open an air extraction hole on the lid (3) to remove the air in the flat box, so that the space between the heat exchange plate (1) and the flat box (2) becomes a vacuum insulation layer, seal the air extraction hole, and The nozzles of the common flow pipe (4) are inserted into the row pipes at both ends of the heat exchange plate (1), and the gap at the insertion point is sealed. The gap can be sealed with general sealing materials, or can be welded and sealed with low-melting point glass powder, so that it is made An all-glass vacuum flat plate collector. The collector is used to make solar walls and can also replace glass power walls, and the all-glass vacuum flat plate collectors that replace glass power walls do not need metal frames. Metal framing can be added to the all-glass1 vacuum flat panel collectors used on balconies and roofs. To increase the metal frame, an elastic object should be set between the heat collector and the frame. the

The first improvement of the technology is: the outer surface of the common flow pipe (4) is coated with a space thermal insulation coating. It is best to use a reflective space thermal insulation reflective coating, or add a layer of thermal insulation material to keep the common flow pipe insulated. the

The second improvement of the technology is: coating the space heat-insulating reflective coating on the lower surface of the heat exchange plate (1) or/and the flat box (2). This effectively suppresses infrared radiation and further improves thermal insulation. the

The third improvement of this technology is: the support in the flat box (2) is a point-like protrusion support, the tubes of the heat exchange plate (1) are closely arranged, and the two ends of the flat box (2) are connected to the heat exchange plate (1) Direct welding and sealing with low melting point glass powder. Like this, the box cover (3) is canceled, and the all-glass vacuum flat plate heat collector has only 3 parts in total, and the manufacturing cost is lower. the

The fourth improvement of this technology lies in: the all-glass vacuum flat-plate heat collectors are tempered to become solar tempered glass vacuum flat-plate heat collectors, and the mechanical strength of the tempered glass is better. the

The fifth improvement of this technology is: at the two ends of the vacuum flat plate heat collector, the two nozzles at the two ends of the common flow tube (4) are closed, and a nozzle perpendicular to the common flow tube (4) is arranged at the back . Such a vacuum flat plate collector is easy to install on the solar wall, and there is no gap on the front, which can better play the decorative effect of the glass power wall. the

The sixth improvement of this technology is: screw threads are set on the glass nozzle of the common flow pipe (4). It is convenient to connect with external pipelines. the

Claims (7)

1. All-glass vacuum flat-plate heat collector, a flat-plate heat collector composed of a box body and a heat exchange plate, characterized in that: the vacuum flat plate heat collector consists of a heat exchange plate (1), a flat box (2), a box cover ( 3) and the common flow pipe (4); the heat exchange plate (1), the flat box (2), the lid (3) and the common flow pipe (4) are all made of glass material, and the glass material is melted and extruded Extruded by a press and a mould; the heat exchange plate (1) is composed of a plurality of parallel arranged pipes to form a tube sheet; the upper surface of the heat exchange plate (1) is made with a selective absorption coating; the inner wall of the flat box (2) There are supports; the support and the flat box (2) are homogeneously integrated; the heat exchange plate (1) is arranged in the middle of the upper and lower supports inside the flat box (2); the support point is at the row of the heat exchange plate (1). on the tube; the box cover (3) is arranged at both ends of the flat box (2); the gap between the box cover (3) and the heat exchange plate (1) and the flat box (2) is sealed, and air is pumped through the air hole to make the exchange The space between the hot plate (1) and the flat box (2) becomes a vacuum heat insulation layer, which seals the air extraction holes; the common flow pipe (4) is a sparse type; the common flow pipe (4) has a A number of nozzles corresponding to the row pipes; the nozzles of the common flow pipes (4) are inserted into the ends of the row pipes at both ends of the heat exchange plate (1), and the gaps at the insertions are sealed to become an all-glass vacuum flat plate heat collector. the 2. The all-glass vacuum flat plate heat collector according to claim 1, characterized in that: the outer surface of the common flow pipe (4) is coated with a space thermal insulation coating. the 3. The all-glass vacuum flat plate heat collector according to claim 1, characterized in that: the lower surface of the heat exchange plate (1) or/and the flat box (2) is coated with a space adiabatic reflective coating. the 4. The all-glass vacuum flat plate heat collector according to claim 1, characterized in that: the support in the flat box (2) is a dot-like protrusion support, and the tubes of the heat exchange plate (1) are closely arranged, The two ends of the flat box (2) and the heat exchange plate (1) are directly welded and sealed with low-melting point glass powder. the 5. The all-glass vacuum flat-plate heat collector according to claim 1, characterized in that: the all-glass vacuum flat-plate heat collector is tempered to become a solar tempered glass vacuum flat-plate heat collector. the 6. The all-glass vacuum flat heat collector according to claim 1, characterized in that: at both ends of the vacuum flat heat collector, the two nozzles at the two ends of the common flow pipe (4) are closed, and a A nozzle perpendicular to the common flow tube. the 7. The all-glass vacuum flat plate heat collector according to claim 1, characterized in that: threads are provided on the glass nozzle of the common flow pipe (4). the

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