WO2012034462A1

WO2012034462A1 - Solar water heater

Info

Publication number: WO2012034462A1
Application number: PCT/CN2011/078132
Authority: WO
Inventors: 王涵琳; 张德进
Original assignee: Wang Hanlin; Zhang Dejin
Priority date: 2010-09-17
Filing date: 2011-08-08
Publication date: 2012-03-22
Also published as: CN101907360B; CN101907360A; US20130239949A1

Abstract

A solar water heater comprises a shell (1) and a heat absorption water tank (2) fixed in the shell (l). A water inlet (3) and a water outlet (4) are disposed on the heat absorption water tank (2). A thermal insulation layer (5) is filled below the heat absorption water tank (2) and above the shell (l), and a transparent thermal insulation board (6) is covered on the heat absorption water tank (2). The heat absorption water tank (2) comprises multiple parallel transverse tubes (21) and multiple parallel longitudinal tubes (22). The transverse tubes (21) and the longitudinal tubes (22) are arranged on the same plane and in communication with one another. Ribs (24) are connected between outer walls of the adjacent transverse tubes (21) or between outer walls of the adjacent longitudinal tubes (22). The heat absorption water tank (2) is made of a plastic material, has the advantages of producing no water scales, anticorrosion, taking up a small space, having a simple structure, and having a low cost, and is especially applicable in areas with high average temperature.

Description

Solar water heater technical field

The invention relates to a solar water heater.

Background technique

Ordinary solar water heaters mostly absorb heat through a glass heat collecting tube, and use a barrel-shaped water tank to store hot water. The water heater produces high water temperature and high thermal efficiency, but at the same time it has the problems of large volume, complicated structure and high cost. The high price restricts the popularization of solar water heaters, especially in tropical or subtropical regions with long sunshine hours and high average temperatures. The lower thermal efficiency is acceptable. People are more concerned with lowering production costs and thus lowering sales prices for solar energy. The popularization of water heaters.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a solar water heater which has a simple structure, a small footprint, and a low cost.

In order to achieve the above object, the present invention adopts the following technical solutions:

A solar water heater according to the present invention comprises an outer casing and a hot water suction tank fixedly mounted in the outer casing. The hot water suction tank is provided with a water inlet and a water outlet, and is characterized in that: the lower surface of the hot water tank is filled with the outer casing There is a heat insulating layer, and the upper part of the hot water tank is covered with a transparent heat insulating board; the hot water tank comprises a plurality of horizontal tubes arranged in parallel and a plurality of vertical tubes arranged in parallel, wherein the horizontal tubes and the longitudinal tubes are located on the same plane and are connected to each other. Adjacent cross tube Ribs are connected between the outer walls or between the outer walls of adjacent longitudinal tubes.

The horizontal pipe and the longitudinal pipe are circular pipes having a circular cross section, and the axes of the horizontal pipe and the longitudinal pipe are wavy lines, and the horizontal pipe and the longitudinal pipe intersect at a peak or a valley of the axis.

The hot water tank is a rectangular water tank, and the upper surface of the rectangular water tank is provided with a plurality of quadrangular pyramid-shaped convex portions, and the lower surface of the rectangular water tank is provided with a conical recess which is recessed inward, and the concave The apex is integrated with the upper surface of the rectangular water tank.

The horizontal pipe and the longitudinal pipe are circular pipes having a circular cross section, and one of the horizontal pipe and the longitudinal pipe is a wave pipe whose axis is a wave line, and the horizontal pipe and the longitudinal pipe are at the peak or the valley of the wave pipe.

- - Father. The horizontal pipe and the longitudinal pipe are circular pipes having a circular cross section, and the horizontal pipe and the longitudinal pipe are straight pipes. The water storage tank is disposed above the suction water tank, and the water outlet is connected with the water storage tank, and the water inlet is connected to the water storage tank through the return water pipe, and the water inlet is provided with a wide door.

After adopting the above technical solution, the water heater hot water tank is made of plastic material, does not produce scale, anti-corrosion, takes up less space, has simple structure, low cost, convenient design and installation, and is especially suitable for popularization in an area with high average temperature.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a longitudinal cross-sectional view showing an embodiment of the present invention.

Figure 2 is a transverse cross-sectional view of the embodiment of Figure 1.

Figure 3 is a schematic view showing the structure of the hot water absorbing tank in the embodiment of Figure 1.

Fig. 4 is a partially enlarged schematic view showing a portion A of Fig. 3.

Figure 5 is a longitudinal cross-sectional view showing another embodiment of the present invention.

Figure 6 is a transverse cross-sectional view of the embodiment of Figure 5. Figure 7 is a transverse cross-sectional view showing a third embodiment of the present invention.

Figure 8 is a longitudinal cross-sectional view of the embodiment of Figure 7.

Figure 9 is a schematic view showing the structure of a fourth embodiment of the present invention.

detailed description

As shown in Figs. 1-4, a solar water heater according to the present invention comprises a casing 1 and a hot water tank 2 fixedly mounted in the casing 1, and the water suction tank 2 is provided with a water inlet 3 and a water outlet 4. The heat insulating layer 5 is filled between the lower surface of the hot water tank 2 and the outer casing 1, and the upper surface of the hot water tank 2 is covered with a transparent heat insulating board 6. In order to reduce the cost, the hot water tank 2 and the outer casing 1 are made of a plastic material. Of course, in order to simultaneously consider the heat efficiency, the material of the hot water tank 2 should be a plastic material having good heat absorption properties. The transparent heat insulating board 6 can be made of a glass plate or a sandwich or a hollow glass plate which is highly transparent and has a heat insulating effect. This ensures that the light is irradiated onto the heat absorbing tank 2, and the convection of the air prevents the heat absorbing tank 2 from dissipating heat.

In the first embodiment, the hot water tank 2 includes a plurality of horizontally disposed horizontal tubes 21 and a plurality of longitudinal tubes 22 arranged in parallel. The horizontal tubes 21 and the longitudinal tubes 22 are located on the same plane and are connected to each other. Ribs 24 are connected between the outer walls of adjacent transverse tubes 21 or between the outer walls of adjacent longitudinal tubes 22. In this way, the horizontal pipe 21 and the vertical pipe 22 are connected to each other to form a plate-like structure, which can receive the sunlight to the utmost extent, is advantageous for improving the utilization of sunlight, and has a high pressure resistance capability, and can be used for bearing. Pressure solar water heaters. In the inside of the hot water absorbing tank 2, the crisscross horizontal tubes 21 and the longitudinal tubes 22 form a network of water, which can heat the water as quickly as possible, facilitating heat exchange.

The horizontal pipe 21 and the longitudinal pipe 22 are circular pipes having a circular cross section, and the axes of the horizontal pipe 21 and the longitudinal pipe 22 are wavy lines, and the horizontal pipe 21 and the longitudinal pipe 22 are at the peak or valley of the axis. Pay. This can sufficiently extend the length of the horizontal pipe 21 and the longitudinal pipe 22 in a limited space, which increases the heat receiving area and increases the volume of the hot water tank. Of course, one of the horizontal tube 21 and the longitudinal tube 22 may be a wave tube, or both of them are straight tubes. The so-called wave tube refers to a tube whose axis is a wave shape. When one of them is a wave tube, the horizontal tube 21 and the vertical tube 22 still intersect at the peak or trough of the wave tube.

As shown in Figures 5 and 6, a second embodiment of the present invention. In order to increase the volume of the water tank, the hot water tanks 2 can also be used in series or in parallel.

As shown in Fig. 7 and Fig. 8, a third embodiment of the present invention. The hot water tank 2 is a rectangular water tank, and the upper surface of the rectangular water tank is provided with a plurality of quadrangular pyramid-shaped convex portions, which can increase the area for receiving solar thermal radiation. On the lower surface of the rectangular water tank, there is a conical recess 23 which is recessed inward, and the apex of the recess 23 is integrated with the upper surface of the rectangular water tank. The conical recess 23 has two functions, one of which can function as a reinforcing structure, so that the connection point between the upper surface and the lower surface of the rectangular water tank is increased, and the structure is firmer; the second is that it can be in the dimple 23 A bolt hole is provided for fixing the connection. Since the apex of the dimple 23 has only one layer structure, the bolt hole is provided in the dimple 23 without considering the problem of waterproofing and leakage prevention, which is advantageous for improving reliability and reducing production cost.

As shown in Fig. 9, a fourth embodiment of the present invention. The hot water tank 2 is obliquely mounted on the bracket 11, the water storage tank 7 is disposed on the upper surface of the hot water tank 2, the water outlet 4 communicates with the water storage tank 7, and the water inlet 3 communicates with the water storage tank 7 through the return water pipe 8, and the water inlet 3 is disposed. There are wide doors 9, 10. When the wide doors 9, 10 are opened, the water in the hot water tank 2 is heated and then rises into the water storage tank 7, and the lower temperature water in the water storage tank 7 is returned to the hot water tank 2 through the return water pipe 8 and the water inlet 3, The water in the water storage tank 7 and the hot water tank 2 can be heated in this cycle. Multiple When the hot water tank 2 is used in series, close the wide door at one or several water inlets to shield the corresponding hot water tank 2 so that it does not participate in the circulation of the water tank, which is more convenient and flexible to use. The wide door here can be manually controlled or wide.

The structure of the above embodiments can be adopted for the hot water tank 2, and will not be repeated here. Of course, as in the above embodiments, the transparent insulation board (6) and the heat insulation layer (5) may be disposed on the upper and lower sides of the hot water tank 2, which can improve the light transmittance and heat insulation.

Claims

Claim

A solar water heater comprising a casing (1) and a hot water tank (2) fixedly mounted in the casing (1), wherein the water suction tank (2) is provided with a water inlet (3) and a water outlet (4), The utility model is characterized in that: the heat insulating layer (5) is filled between the lower surface of the hot water tank (2) and the outer casing (1), and the upper surface of the hot water tank (2) is covered with a transparent heat insulating board (6); Water tank

(2) comprising a plurality of parallel tubes (21) arranged in parallel and a plurality of longitudinal tubes (22) arranged in parallel, the horizontal tubes (21) and the longitudinal tubes (22) being located on the same plane and connected to each other, adjacent to each other Ribs (24) are connected between the outer walls of the cross tubes (21) or between the outer walls of adjacent longitudinal tubes (22).

2. A solar water heater according to claim 1, wherein: said horizontal tube (21) and longitudinal tube (22) are circular tubes having a circular cross section, transverse tubes (21) and longitudinal tubes.

The axis of (22) is a wavy line, and the horizontal tube (21) and the longitudinal tube (22) intersect at the peak or valley of the axis.

3. The solar water heater according to claim 1, wherein: the hot water tank (2) is a rectangular water tank, and the upper surface of the rectangular water tank is provided with a plurality of quadrangular pyramid-shaped convex portions at the rectangle The lower surface of the water tank has a conical recess (23) recessed inwardly, and the apex of the recess (23) is integrated with the upper surface of the rectangular water tank.

4. A solar water heater according to claim 1, wherein: said horizontal tube (21) and said longitudinal tube (22) are circular tubes having a circular cross section, transverse tubes (21) and longitudinal tubes.

(22) One of them is a wave tube with a wavy line, and the horizontal tube (21) and the longitudinal tube (22) intersect at the crest or trough of the wave tube.

5. A solar water heater according to claim 1, wherein: said horizontal tube (21) and said longitudinal tube (22) are circular tubes having a circular cross section, transverse tubes (21) and longitudinal tubes.

(22) All are straight pipes.

6. A solar water heater according to claims 1-5, characterized in that: the water storage tank (7) is arranged above the suction water tank (2), and the water outlet (4) is connected to the water storage tank (7). The nozzle (3) is connected to the water tank (7) through a return pipe (8), and a wide door (9, 10) is provided at the water inlet (3).