This disclosure relates to a solar water heater.
Ordinary solar water heaters typically use glass thermo-collecting tubes to collect heat, and typically use bucker-shape water tank to store hot water. Water heaters in this type may produce high water with high temperature, and have high heat efficiency; however water heaters in this type may also have problems including bulky in size, complicate in design, and costly in manufacturing. High cost may limit the water heaters being widely used, especially in tropical or semitropical zones having plenty of hours of daylight and higher average temperature. In such places slightly lower heat efficiency is acceptable, and people there may care more about lowering manufacturing costs in order to lower sale price and to promote the use of solar water heaters.
The purposes intended to be achieved by the embodiments disclosed herein are to provide a solar water heater which is simpler in design, more compact in space usage, and lower in manufacturing cost.
In order to achieve the purposes above, some embodiments disclosed herein may utilize the following technical schemes:
Some embodiments disclosed are related to a solar water heater, which may include an outer housing and a heat absorbing water tank fixed onto the interior surface of the outer housing. The heat absorbing water tank may have a water entrance and a water exit, and may have the following features: there may be a heat insulating layer filled underneath the heat absorbing water tank, between the heat absorbing water tank and the outer housing, and there may be a transparent heat insulating board placed on top of the heat absorbing water tank.
The above disclosed heating absorbing water tank may include a plurality of transverse tubules placed in parallel with each other and a plurality of longitudinal tubules placed in parallel with each other. The plurality of transverse tubules and the plurality of longitudinal tubules may be placed coplanarly and be inter-connected, and there may be ribs connecting outerwalls of adjacent transverse tubules or outerwalls of adjacent longitudinal tubules.
The above disclosed heat absorbing water tank may also be a rectangular heat absorbing water tank. The top surface of the rectangular heat absorbing water tank may have a plurality of rectangular pyramid shape convexes, and the bottom surface of the rectangular heat absorbing water tank may have a plurality of conical concaves, and the apexes of the conical concaves may reach and become part of the top surface of the rectangular heat absorbing water tank.
The above disclosed transverse tubules and longitudinal tubules may be circular tubules having circular shape cross sections, and at least either the transverse tubules or the longitudinal tubules may have a wave axis line, and the transverse tubules and the longitudinal tubules may intersect at a wave crest or a wave trough of the wave axis line.
The above disclosed transverse tubules and longitudinal tubules may be circular tubules having circular shape cross sections, and the transverse tubules and the longitudinal tubules may be both straight tubules.
A water storing water tank may be placed on top of the heat absorbing water tank. The water exit of the heat absorbing water tank may be connected to the water storing water tank, and the water entrance of the heat absorbing water tank may be connected to the water storing water tank via a return water pipe. A valve may be placed at the water entrance of the heat absorbing water tank.
A water storing water tank and an electric heating chamber may be embedded in the heat insulating layer filled underneath the heat absorbing water tank. The two ends of the water storing water tank may be connected to the water entrance and water exit of the hear absorbing water tank via connecting tubes, and the electric heating chamber may be placed in series between the water storing water tank and the connecting tubes connecting to the water entrance. The electric heating chamber may have an electric heater inside of it.
The above disclosed heat absorbing water tank may have a caecal tube. The caecal tube may have a closed top, and the bottom of the caecal tube is connected to a core space within the heat absorbing water tank via a connector.
The above disclosed water storing water tank may have a caecal tube. The caecal tube may have a closed top, and the bottom of the caecal tube is connected to a core space within the water storing water tank via a connector.
By using the above disclosed technical schemes, the heat absorbing water tank may be manufactured using plastic materials. The heat absorbing water tank is likely to withstand a water pressure caused by tap water, is not likely to accumulate scale incrustation, and is likely to be corrosion resistant. The heat absorbing water tank is likely to be more compact, easier in design, lower in manufacturing cost, and more convenient in design and installation. The heat absorbing water tank is thus likely to be more widely used in an area with higher average temperature.
The following is a brief explanation of embodiments herein using drawings:
As shown in the drawings, the embodiments disclosed herein relate to a solar water heater including an outer housing 1 and a heat absorbing water tank 2 fixed onto the interior surface of the outer housing 1. The heat absorbing water tank 2 may have a water entrance 3 and a water exit 4. A heat insulating layer 5 may be filled underneath the heat absorbing water tank 2 between the heat absorbing water tank 2 and the outer housing 1, and a transparent heat insulating board 6 may be placed on top of the heat absorbing water tank 2. To reduce cost, the heat absorbing water tank 2 and the outer housing 1 may be built using plastic materials; however to achieve heating efficiency, the heat absorbing water tank 2 may be built using plastic materials having better heat absorbing capacity. The transparent heat insulating board 6 may be built using a glass board good in light transmittance and heat insulation, or using an intercalated, cannulate glass board. The embodiment thus allows the heat absorbing water tank 2 to be exposed to sunlight, while prevents the heat absorbing water tank 2 from heat dissipation through air convection.
The above disclosed heat absorbing water tank 2 may have two other embodiments, as shown in
The plurality of transverse tubules 21 and the plurality of longitudinal tubules 22 disclosed above may be circular tubules having circular shape cross sections, and at least either the plurality of transverse tubules 21 or the plurality of longitudinal tubules 22 may have a wave axis line, and the plurality of transverse tubules 21 and the plurality of longitudinal tubules 22 may intersect at a wave crest or a wave trough of the wave axis line. In these embodiments the length of the plurality of transverse tubules 21 and the plurality of longitudinal tubules 22 may be maximized to a greater extent within a limited space, which may increase the surface for heat exchange and may at the same time enlarge the volume of the heat absorbing water tank 2. The plurality of transverse tubules 21 and the plurality of longitudinal tubules 22 may both be straight tubules. A wave tubule is a tubule having wave axis line, and when either of the plurality of transverse tubules 21 and the plurality of longitudinal tubules 22 are wave tubules, the plurality of transverse tubules 21 and the plurality of longitudinal tubules 22 may still intersect at a wave crest or a wave trough of the wave axis line of the wave tubules.
A second embodiment is shown in
A third embodiment is shown in
A fourth embodiment is shown in
It is to be understood that in this embodiment, the heat absorbing water tank 2 may also be a rectangular heat absorbing water tank 2 disclosed above.
A fifth embodiment is shown in
A sixth embodiment is shown in
A seventh embodiment is shown in
An eighth embodiment is shown in
In another embodiment, when using the water storing water tank 7 disclosed above, the water storing water tank 7 may have a caecal tube 51. The caecal tube 51 may have a closed top, and the bottom of the caecal tube 51 is connected to a core space within the water storing water tank 7 via a connector 52. The caecal tube 51 herein serves the same functions to provide a buffer and to reduce the pressure from a water hammer effect.
Number | Date | Country | Kind |
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201010285013.X | Sep 2010 | CN | national |
Number | Date | Country | |
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Parent | PCT/CN2011/078132 | Aug 2011 | US |
Child | 13786977 | US |