CN2454721Y

CN2454721Y - Plate-type solar water heater

Info

Publication number: CN2454721Y
Application number: CN00263980U
Authority: CN
Inventors: 郑茂余; 郑超
Original assignee: Individual
Current assignee: Individual
Priority date: 2000-12-08
Filing date: 2000-12-08
Publication date: 2001-10-17
Anticipated expiration: 2010-12-08

Abstract

The utility model relates to a plate-type solar water heater which comprises a water tank 1 provided with a heat-insulating layer 2, a pipe part, and a heat collector part on the lower part of the water tank 1, wherein, the heat collector part is composed of a bottom plate 25, a framework 22, an insulation layer 21, a heat collector 7 and a cover plate of the heat collector 7. The utility model is characterized in that the cover plate is designed into a glass cover plate 23 having an upper layer and a lower layer, and a vacuum layer is clamped between the upper and the lower glass plates; the cover plate is composed of an upper and a lower glass plates 27, 28, sealing rubber strips 24 around the upper and the lower glass plates 27, 28, and the vacuum layer 30 between the upper and the lower glass plates 27, 28; in addition, reinforcing ribs 26 are evenly arranged in the vacuum layer 30. The utility model has the characteristics of simple structure, easy fabrication, low cost, favorable insulation property, low radiation loss, high heat efficiency, etc.

Description

A kind of flat plate solar water heater

The utility model relates to solar energy heat utilization technical field, particularly a kind of flat plate solar water heater.

At present, common flat plate solar water heater uses comparatively extensive, and the cover plate of the heat collector of common flat plate solar water heater generally adopts the single-glass cover plate, when the temperature of the thermal-arrest bar (or plate) in the heat collector is higher than outside air temperature, thermal-arrest bar (or plate) just conducts heat to the external world by glass cover-plate, because the heat-insulating property of single-glass cover plate is very poor, goes so a large amount of heat just is lost in the outside air by glass cover-plate.Therefore, the thermal efficiency of heat collector is low, and the liquid outlet temperature is also lower, for this reason, influences the efficient of solar water heater, is difficult to satisfy user's needs.

The purpose of this utility model is: at the problem that prior art exists, design provides a kind of simple in structure, and manufacturing process is simple, cost is low, and the heat collector that efficient is high promptly provides a kind of radiation loss that reduces heat collector, thermal efficiency height, the flat plate solar water heater of good heat insulating.

The utility model is achieved by following occurring mode: a kind of flat plate solar water heater, comprise water tank 1 and the pipe section of being with heat-insulation layer 2, and the heat collector part of water tank 1 bottom, as shown in Figure 1, wherein, the heat collector part is by the heat-insulation layer 21 of base plate 25 and framework 22 and interior setting thereof, heat collector 7 in the heat-insulation layer 21 and cover plate thereof are formed, as Fig. 2, shown in 3, it is characterized in that: said cover plate is designed to, following double-deck reaching pressed from both sides the glass cover-plate 23 of a vacuum layer therebetween, it is by last, lower glass plate 27 and 28 and sealing joint strip all around 24, and on, lower glass plate 27 and 28 s' vacuum layer 30 is formed, as Fig. 2, shown in 3, and reinforcement 26 is set evenly in vacuum layer 30, simultaneously, end periphery is made with cover plate 23 and is cooperated the mounting groove of installing 29 on the framework 22, as shown in Figure 3.

In the present technique, said reinforcement 26 is material transparent (as glass etc.).In addition, the solar water heater that present technique provides is for being fit to the antifreeze capsule formula heat exchanger 3 (as shown in Figure 1) of expansion that north cold area uses, and for can not adopting capsule formula heat exchanger in warm area, south, and directly is connected with water tank 1.Aforementioned alleged pipe section (for conventional technology) be meant the upper hose 12 that is arranged at water tank 1 one sides and on check valve 10,

breather pipe

17 and 11, magnetic valve 8, stop valve 15 and shower nozzle 14 and

stop valve

13 and 16, and capsule formula heat exchanger 3 is meant the capsule formula heat exchanger 3 that is arranged in the water tank 1, as shown in Figure 1, on it, in go up and the bottom is respectively equipped with breather pipe 4, upper circular tube 5 and circulation pipe 6 down, and upper and lower the circulation pipe 5 and 6 top and the bottom joint of the heat collector 7 below being arranged at capsule Shi Rere device 3 respectively is communicated with, as shown in Figure 1, 2.Simultaneously, in water tank 1, be provided with the measuring head 20 of water level display instrument 9, as shown in Figure 1, said capsule formula heat exchanger 3 is expandable casing, this casing can be a rectangle, also can be other geometry, and this casing can adopt the metal material manufacturing, for example can adopt the sheet metal manufacturing, as copper coin, corrosion resistant plate, galvanized sheet etc., in addition, above-mentioned capsule formula heat exchanger 3 is expandable casing, illustrates that the volume of capsule formula heat exchanger 3 is transformable, promptly when the non freezing solution (anti-icing fluid) in the capsule formula heat exchanger 3 heats up, its volume also constantly expands, increase, the pressure in the heat exchanger 3 increases to some extent, because heat exchanger 3 is a capsule formula structure, and make by sheet metal, so along with the rising of pressure, its volume is also increasing, can hold non freezing solution by volume that temperature rise increased.

The course of work of the present utility model and principle are: after whole solar water heater installs, after at first in water tank 1, filling with water, then by annotating (putting) liquid valve 19 to capsule formula heat exchanger 3, heat collector 7 reaches, inject non freezing solution in the following circulation pipe 5 and 6, then close and run wind 18, after heat collector 7 is subjected to the solar light irradiation heat absorption, non freezing solution just is heated, when temperature is higher than fluid temperature in the heat exchanger 3, just begin circulation, by upper circular tube 5 inflow heat exchangers 3, carry out heat exchange with the water in the water tank 1, and not heated non freezing solution is just by circulation pipe 6 is additional down, after carrying out the non freezing solution cooling of heat exchange with water in the heat exchanger 3, enter heat collector 7 again by circulation pipe 6 down and absorb solar energy, and constantly flow in the water tanks 1 by upper circular tube 6, go round and begin again, non freezing solution and water temperature constantly rise, and its volume also constantly expanded when non freezing solution heated up, increase, the pressure in the heat exchanger 3 increases to some extent.But because the structure of heat exchanger 3 is the capsule formula, and made by metallic plate, so along with the rising of pressure, its volume is also increasing, can hold non freezing solution by volume that temperature rise increased, when using hot water, close stop valve 16, open magnetic valve 8, hot water is just from water tank 1 flow through magnetic valve 8, stop valve 15, by shower nozzle 14 ejections, control valve 13, the water temperature that can regulate ejection.During last water,

valve

16,15 is closed, and magnetic valve 8 is opened, check valve 10 is closed, and shows water level by water level display instrument 9, when water is full of, valve-off 13 and magnetic valve 8, stop to go up water, open valve 16, top in the upper hose 8 is because the deadweight of water causes negative pressure, check valve 10 is opened, air is entered by breather pipe 11, and all emptyings of the water in the upper hose 8 are with anti-freezing.Do not freeze medium because of being low temperature in heat collector and the circulation pipe, therefore, even the temperature in winter in the time of subzero 40 ℃, water heater can not be damaged by frost yet.Because the cover plate in the present technique adopts double-deck up and down and presss from both sides (transparent) glass cover-plate 23 of a vacuum layer, has good heat-insulating property, the thermal efficiency of heat collector 7 improves greatly, thereby has also improved the temperature of the liquid outlet of heat collector 7.

The utility model is compared with prior art, since utilize layer glass press from both sides an enclosed vacuum () layer realize high-efficiency insulated, compare with single-glass, though the illumination that sees through reduces more than 10%, but its heat-insulating property doubles, this can reduce the radiation loss of heat collector widely, improve its thermal efficiency, therefore also improved the liquid outlet temperature of heat collector, had simple in structurely, made easily, cost is low, can reduce the radiation loss of heat collector, good heat insulating, characteristics such as thermal efficiency height.

Fig. 1 is a general structure schematic diagram of the present utility model.

Fig. 2 is a general structure side diagrammatic sketch of the present utility model.

Fig. 3 is part (heat collector 7) enlarged drawing of Fig. 2.

Among the figure: 1 water tank, 2 heat-insulation layers, 3 heat exchangers, 4 (heat exchanger) breather pipe, 5 upper circular tubes, 6 times circulation pipes, 7 heat collectors, 8 magnetic valves, 9 water level display instruments, 10 check valves, 11 breather pipes, (get) water pipe on 12,13 stop valves, 14 shower nozzles, 15 stop valves, 16 stop valves, 17 breather pipes, 18 run wind, 19 annotate (putting) liquid valve, 20 measuring heads, 21 heat-insulation layers, 22 frameworks, 23 cover plates, 24 sealing joint strips, 25 base plates, 26 reinforcements, 27 upper glass plates, 28 lower glass plate, 29 mounting grooves, 30 vacuum layer.

Below in conjunction with accompanying drawing the utility model is further described:

Most preferred embodiment of the present utility model, as shown in Figure 1, 2, 3.A kind of flat plate solar water heater, comprise water tank 1 and the pipe section of being with heat-insulation layer 2, and the heat collector part of water tank 1 bottom, as shown in Figure 1, wherein, the heat collector part is by the heat-insulation layer 21 of base plate 25 and framework 22 and interior setting thereof, heat collector 7 in the heat-insulation layer 21 and cover plate thereof are formed, as Fig. 2, shown in 3, it is characterized in that: said cover plate is designed to, the following double-deck glass cover-plate 23 that presss from both sides a gas blanket therebetween that reaches, it is by last, lower glass plate 27 and 28 and sealing joint strip all around 24, and on, lower glass plate 27 and 28 s' vacuum layer 30 is formed, as Fig. 2, shown in 3, and reinforcement 26 is set evenly in vacuum layer 30, simultaneously, end periphery is made with cover plate 23 and is cooperated the mounting groove of installing 29 on the framework 22, as shown in Figure 3.

In the present technique, shown reinforcement 26 is material transparent (as glass etc.).In addition, the solar water heater that present technique provides is for being fit to the antifreeze capsule formula heat exchanger 3 (as shown in Figure 1) of expansion that north cold area uses, and for can not adopting capsule formula heat exchanger in warm area, south, and directly is connected with water tank 1.Aforementioned alleged pipe section (for conventional technology) be meant the upper hose 12 that is arranged at water tank 1 one sides and on check valve 10,

breather pipe

17 and 11, magnetic valve 8, stop valve 15 and shower nozzle 14 and

stop valve

13 and 16, and capsule formula heat exchanger 3 is meant that the capsule formula heat exchanger 3 that is arranged in the water tank 1 as shown in Figure 1, on it, in go up and the bottom is respectively equipped with breather pipe 4, upper circular tube 5 and circulation pipe 6 down, and upper and lower the circulation pipe 5 and 6 top and the bottom joint of the heat collector 7 below being arranged at capsule Shi Rere device 3 respectively is communicated with, as shown in Figure 1, 2.Simultaneously, in water tank 1, be provided with the measuring head 20 of water level display instrument 9, as shown in Figure 1, said capsule formula heat exchanger 3 is expandable casing, this casing can be a rectangle, also can be other geometry, and this casing can adopt the metal material manufacturing, for example can adopt the sheet metal manufacturing, as copper coin, corrosion resistant plate, galvanized sheet etc., in addition, above-mentioned capsule formula heat exchanger 3 is expandable casing, illustrates that the volume of capsule formula heat exchanger 3 is transformable, promptly when the non freezing solution (anti-icing fluid) in the capsule formula heat exchanger 3 heats up, its volume also constantly expands, increase, the pressure in the heat exchanger 3 increases to some extent, because heat exchanger 3 is a capsule formula structure, and make by metal thin plate, so along with the rising of pressure, its volume is also increasing, can hold non freezing solution by volume that temperature rise increased.

Claims

1, a kind of flat plate solar water heater, comprise water tank 1 and the pipe section of being with heat-insulation layer 2, and the heat collector part of water tank 1 bottom, wherein, the heat collector part is by base plate 25 and framework 22, and the heat-insulation layer 21 of interior setting, heat collector 7 in the heat-insulation layer 21 and cover plate thereof are formed, it is characterized in that: said cover plate is designed to, following double-deck reaching pressed from both sides the glass cover-plate 23 of a vacuum layer therebetween, it is by last, lower glass plate 27 and 28 and sealing joint strip all around 24, and on, lower glass plate 27 and 28 s' vacuum layer 30 is formed, and reinforcement 26 is set evenly in vacuum layer 30, simultaneously, end periphery is made the mounting groove 29 that cooperates installation with cover plate 23 on the framework 22.