A solar water heater

Abstract

The utility model discloses a solar water heater relates to the technical field of water heater. Its main technical scheme: including water storage tank and electric heating stick, the lower extreme of water storage tank is provided with cold water pipe, and the upper extreme of water storage tank is provided with hot water pipe, electric heating stick sets up in water storage tank, and electric heating stick is located water storage tank upper extreme, and electric heating stick is close to the water inlet of hot water pipe. Start electric heating stick, and the water of water storage tank upper layer close to hot water pipe water inlet is directly heated. Expect to reach the high temperature water that can preferentially heat soon will be used, and then promote the instantaneous temperature response ability of hot water pipe water outlet's purpose. The problem that needs long time heat conduction to influence the upper hot water after traditional electric heating stick heating lower low temperature water is solved, and the purpose that the user's high temperature water ability is obtained in short time is expected to reach the purpose of remarkable improvement. The heat of electric heating stick concentrates in the vicinity of hot water pipe, and the loss caused by the diffusion of heat to the lower extreme of water storage tank is reduced, and the purpose of reducing the energy loss brought by heating the whole water storage tank is expected to reach.

Description

Technical Field

[0001] This utility model relates to the field of water heater technology, specifically to a solar water heater. Background Technology

[0002] Solar water heaters convert solar energy into heat energy, heating water from a low temperature to a high temperature to meet people's hot water needs in daily life and production.

[0003] In existing vacuum tube solar water heaters, the heating rods are usually installed at the bottom of the storage tank, near the outlet of the cold water pipe. This causes the heat generated by the heating rods to diffuse throughout the entire storage tank, rather than centrally heating the upper layer of water near the inlet of the hot water pipe. This reduces the effect on raising the water temperature at the hot water outlet. Utility Model Content

[0004] The purpose of this invention is to provide a solar water heater that solves the problem that the heating rod in existing vacuum tube solar water heaters has a low effect on raising the water temperature at the hot water outlet.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A solar water heater includes a water storage tank and an electric heating rod. A cold water pipe is provided at the lower end of the water storage tank, and a hot water pipe is provided at the upper end of the water storage tank. The electric heating rod is disposed inside the water storage tank, located at the upper end of the water storage tank, and is close to the inlet of the hot water pipe.

[0007] A further technical solution is: the solar water heater also includes a solar vacuum tube; the solar vacuum tube is disposed on the side wall of the water storage tank and extends radially along the water storage tank; the number of solar vacuum tubes is set to several, and the several solar vacuum tubes are arranged sequentially from the lower end of the water storage tank to the upper end of the water storage tank.

[0008] A further technical solution is as follows: the solar water heater also includes a bracket; the upper surface of the bracket gradually slopes downwards along one side of the bracket to the other side; the water storage tank is disposed at one end of the bracket; the solar vacuum tubes extend along one end of the bracket to the other end, and the plurality of solar vacuum tubes are distributed on the upper surface of the bracket along one side of the bracket to the other side.

[0009] A further technical solution is that the solar water heater also includes a water supply tank; the water supply tank is connected to the cold water pipe, and the water supply tank is located above the hot water pipe.

[0010] A further technical solution is that an exhaust pipe is provided at the upper end of the water storage tank; the exhaust port of the exhaust pipe is located above the water supply tank.

[0011] A further technical solution is that the solar water heater also includes an ultraviolet lamp; the ultraviolet lamp is installed inside the water storage tank and is close to the outlet of the cold water pipe.

[0012] A further technical solution is that the solar water heater also includes an electrolysis device; the electrolysis device is installed inside the water storage tank and is located near the outlet of the cold water pipe.

[0013] A further technical solution is that a drain pipe is provided at the lower end of the water storage tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] During use, when solar energy is insufficient (such as on cloudy or rainy days or at night), the electric heating rod is activated to directly heat the water in the upper part of the storage tank near the hot water inlet. Since high-temperature water naturally rises and low-temperature water sinks, the heated high-temperature water is more easily output from the hot water pipe. This aims to prioritize heating the high-temperature water that will be used soon, thereby improving the immediate temperature response of the hot water outlet. Furthermore, it solves the problem of traditional electric heating rods requiring a long heat conduction period after heating the lower low-temperature water before affecting the upper hot water, significantly improving the user's ability to obtain high-temperature water in a short time. Additionally, the heat from the heating rod is concentrated near the hot water pipe, reducing heat loss due to diffusion to the lower part of the storage tank, thus minimizing energy loss from heating the entire tank. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a solar water heater in this embodiment;

[0017] Figure 2 This is a schematic diagram of the structure of a solar water heater without a water supply tank in this embodiment;

[0018] Figure 3 This is a cross-sectional view of a water storage tank for a solar water heater in this embodiment.

[0019] The attached diagram shows the markings and corresponding component names:

[0020] 1-Water storage tank; 2-Cold water pipe; 3-Hot water pipe; 4-Heating rod; 5-Solar vacuum tube; 6-Bracket; 7-Water supply tank; 8-Exhaust pipe; 9-Ultraviolet lamp; 10-Electrolysis device; 11-Sewage pipe. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings.

[0022] Example 1: This example provides a solar water heater, such as... Figures 1-3 As shown, it includes a water storage tank 1 and an electric heating rod 4. A cold water pipe 2 is provided at the lower end of the water storage tank 1, and a hot water pipe 3 is provided at the upper end of the water storage tank 1. The electric heating rod 4 is located inside the water storage tank 1, at the upper end of the water storage tank 1, and close to the inlet of the hot water pipe 3.

[0023] For example, in the implementation process, the water storage tank 1 is vertically arranged, and a cold water pipe 2 for replenishing low-temperature water into the water storage tank 1 is installed at the lower end of the water storage tank 1. A hot water pipe 3 for outputting high-temperature water is installed at the upper end of the water storage tank 1, and a hot water switch valve (not shown in the figure) is installed on the hot water pipe 3. The low-temperature water flowing into the water storage tank 1 through the cold water pipe 2 is heated to form high-temperature water. Here, low-temperature water refers to the water that has just flowed into the water storage tank 1 without being heated, and high-temperature water refers to the water that has flowed into the water storage tank 1 and been heated. The temperature of the high-temperature water is higher than that of the low-temperature water, making the density of the high-temperature water less than that of the low-temperature water, thus causing the high-temperature water to move from the lower end of the water storage tank 1 to the upper end of the water storage tank 1. This results in a phenomenon in the water storage tank 1 where the high-temperature water is located at the upper layer, close to the hot water pipe 3, and the low-temperature water is located at the lower layer, close to the cold water pipe 2. The aim is to make it convenient for users to directly use high-temperature water when they open the hot water switch valve on the hot water pipe 3.

[0024] During continuous use, the added low-temperature water enters through the lower end of the water storage tank 1, continuously pushing the high-temperature water at the top towards the hot water pipe 3. This aims to ensure that users can continuously access high-temperature water, thereby increasing the utilization rate of high-temperature water.

[0025] The heating element 4 is connected to the inner wall of the water storage tank 1 by means of screws, clips, or other methods. The heating element 4 is located at the upper end of the water storage tank 1, near the inlet of the hot water pipe 3. The power supply cable of the heating element 4 passes through the side wall of the water storage tank 1, and is sealed to the water storage tank 1 using a sealing ring or adhesive sealant. The power supply cable is also connected to an external power source.

[0026] During use, when solar energy is insufficient (such as during cloudy or rainy weather or at night), the electric heating rod 4 is activated to directly heat the water in the upper layer of the water storage tank 1 near the inlet of the hot water pipe 3. Since high-temperature water naturally rises and low-temperature water sinks, the heated high-temperature water is more easily output from the hot water pipe 3. This aims to prioritize heating the high-temperature water that will soon be used, thereby improving the immediate temperature response of the hot water pipe 3 outlet. Furthermore, it solves the problem of traditional electric heating rods requiring a long period of heat conduction after heating the lower low-temperature water before affecting the upper hot water, significantly improving the user's ability to obtain high-temperature water in a short time. Additionally, the heat from the electric heating rod 4 is concentrated near the hot water pipe 3, reducing heat loss due to diffusion to the lower part of the water storage tank 1, thus minimizing energy loss from heating the entire water storage tank 1.

[0027] Example 2: Based on Example 1 above, in this example, as follows... Figure 2 As shown, the solar water heater also includes a solar vacuum tube 5; the solar vacuum tube 5 is disposed on the side wall of the water storage tank 1, and the solar vacuum tube 5 extends radially along the water storage tank 1; the number of solar vacuum tubes 5 is set to several, and the several solar vacuum tubes 5 are arranged sequentially from the lower end of the water storage tank 1 to the upper end of the water storage tank 1.

[0028] For example, in the implementation process, the above-mentioned solar water heater also includes a solar vacuum tube 5, which is connected to the side wall of the water storage tank 1 by means of screw fixing, snap fixing, etc., and communicates with the interior of the water storage tank 1. The purpose is to transfer the solar energy absorbed by the solar vacuum tube 5 to the water in the water storage tank 1.

[0029] The solar vacuum tube 5 extends radially along the water storage tank 1, and several solar vacuum tubes 5 are arranged evenly from the lower end to the upper end of the water storage tank 1. This aims to increase the solar energy absorption area, thereby more effectively transferring solar energy to the water in the water storage tank 1. Furthermore, the multiple solar vacuum tubes 5 are distributed at different heights along the direction from the lower end to the upper end of the water storage tank 1 to ensure that water at different levels is effectively heated, thereby improving the overall heating efficiency.

[0030] Example 3: Based on Example 2 above, in this example, as follows... Figure 2As shown, the solar water heater also includes a bracket 6; the upper surface of the bracket 6 gradually slopes downwards along one side of the bracket 6 to the other side; the water storage tank 1 is disposed at one end of the bracket 6; the solar vacuum tube 5 extends along one end of the bracket 6 to the other end, and the plurality of solar vacuum tubes 5 are distributed on the upper surface of the bracket 6 along one side of the bracket 6 to the other side.

[0031] For example, in the implementation process, the solar water heater also includes a support 6, the upper surface of which gradually slopes downward from one side to the other. That is, the upper surface of the support 6 is in an inclined state.

[0032] The water storage tank 1 is installed on one end of the bracket 6 by welding, screwing, or snap-fitting. The solar vacuum tubes 5 on the water storage tank 1 are located on the upper surface of the bracket 6 and extend from one end of the bracket 6 (the end where the water storage tank 1 is installed) to the other end. Several solar vacuum tubes 5 on the water storage tank 1 are distributed on the upper surface of the bracket 6 from one side to the other. That is, these solar vacuum tubes 5 are arranged along the inclined direction of the bracket 6, so that the overall structure formed by the solar vacuum tubes 5 presents a certain tilt angle. The aim is to ensure that the solar vacuum tubes 5 face the sun at a more optimal angle, thereby obtaining better sunlight conditions and increasing the total daily energy absorption.

[0033] Example 4: Based on Example 1 above, in this example, as... Figure 1 As shown, the solar water heater also includes a water supply tank 7; the water supply tank 7 is connected to the cold water pipe 2, and the water supply tank 7 is located above the hot water pipe 3.

[0034] For example, in the implementation process, the above-mentioned solar water heater also includes a water supply tank 7, which is connected to the cold water pipe 2 of the storage tank 1 through a pipeline to ensure that the low-temperature water in the water supply tank 7 can flow smoothly into the storage tank 1. And the water supply tank 7 is located above the hot water pipe 3.

[0035] During use, when the user opens the hot water switch valve on the hot water pipe 3, the low-temperature water in the water supply tank 7 flows into the lower end of the storage tank 1 through the cold water inlet pipe 2 under the action of gravity, and pushes the high-temperature water at the upper end of the storage tank 1 out through the hot water pipe 3. The aim is to achieve automatic water replenishment of the storage tank 1 by means of gravity, thereby reducing the need for additional pumping equipment, simplifying the system structure, and reducing costs and maintenance difficulties.

[0036] The water supply tank 7 is also equipped with a sewage discharge device and a water supply device. These are used to clean the scale buildup in the water supply tank 7 and to supply water into the tank.

[0037] Example 5: Based on Example 4 above, in this example, as... Figure 1 As shown, an exhaust pipe 8 is provided at the upper end of the water storage tank 1; the exhaust port of the exhaust pipe 8 is located above the water supply tank 7.

[0038] For example, in the implementation process, the above-mentioned solar water heater also includes an exhaust pipe 8, which is connected to the upper end of the water storage tank 1 by means of screw fixing, snap fixing, etc., and communicates with the interior of the water storage tank 1. The exhaust pipe 8 is used to discharge the expansion gas or steam generated in the water storage tank 1 due to heating, in order to reduce the risk of excessive gas pressure in the water storage tank 1.

[0039] The exhaust port of the exhaust pipe 8 is located above the water supply tank 7. This ensures that the water level of the low-temperature water in the water supply tank 7 is lower than the exhaust port of the exhaust pipe, so that the water level in the water supply tank 7 can be at the same level as the water level in the storage tank 1 (the principle of communicating vessels). This effectively reduces the number of electronic components such as water level sensors and controllers used to control the water level in the storage tank 1, aiming to reduce the risk of electronic component failure when controlling the water level.

[0040] Example 6: Based on Example 1 above, in this example, as follows... Figure 3 As shown, the solar water heater also includes an ultraviolet lamp 9; the ultraviolet lamp 9 is installed inside the water storage tank 1 and is close to the outlet of the cold water pipe 2.

[0041] For example, in the implementation process, the above-mentioned solar water heater also includes an ultraviolet lamp 9. The ultraviolet lamp 9 is installed on the inner wall of the water storage tank 1 by means of screw fixing, snap-fit, etc., and the ultraviolet lamp 9 is located at the lower end of the water storage tank 1 and close to the outlet of the cold water pipe 2 (i.e., the position where low temperature water enters the water storage tank 1).

[0042] During operation, the conductive wire of the ultraviolet lamp 9 is threaded through the side wall of the water storage tank 1, and the conductive wire is sealed to the water storage tank 1 using sealing rings, adhesive seals, or other methods. The input end of the conductive wire is connected to the photovoltaic panel for power supply. After being powered on, the ultraviolet lamp 9 emits ultraviolet rays to sterilize and disinfect the low-temperature water that flows into the water storage tank 1 through the cold water pipe 2 and passes through the area irradiated by the ultraviolet lamp 9. On the one hand, this aims to reduce the risk of bacterial growth, odor, and algae growth caused by long-term water storage in the water storage tank 1. On the other hand, sterilization is performed as soon as the low-temperature water enters the water storage tank 1, aiming to ensure water quality safety from the source.

[0043] Example 7: Based on Example 1 above, in this example, as follows... Figure 3As shown, the solar water heater also includes an electrolysis device 10; the electrolysis device 10 is installed inside the water storage tank 1 and is located near the outlet of the cold water pipe 2.

[0044] For example, in the implementation process, the above-mentioned solar water heater also includes an electrolysis device 10. The electrolysis device 10 is fixed to the inner wall of the water storage tank 1 by means of screwing, snapping or other methods. The electrolysis device 10 is located at the lower end of the water storage tank 1 and close to the outlet of the cold water pipe 2 (i.e. the position where low temperature water enters the water storage tank 1).

[0045] During operation, the conductive wires of the electrolysis device 10 are threaded through the side wall of the water storage tank 1, and are sealed to the water storage tank 1 using sealing rings, adhesive seals, or other methods. The input end of the conductive wires is connected to the photovoltaic panel for power supply. After being powered on, the electrolysis device 10 electrolyzes the low-temperature water flowing into the water storage tank 1 via the cold water pipe 2 and passing through the working area of ​​the electrolysis device 10, enriching the water in the water storage tank 1 with dissolved hydrogen. This aims to further disinfect and sterilize the water in the water storage tank 1 and improve its water quality.

[0046] Example 8: Based on Example 1 above, in this example, as follows... Figure 3 As shown, a drain pipe 11 is provided at the lower end of the water storage tank 1.

[0047] For example, in the implementation process, the above-mentioned solar water heater also includes a drain pipe 11. The drain pipe 11 is connected to the lowest point of the lower end of the water storage tank 1 by means of screwing, snap-fitting or other methods. The drain pipe 11 is connected to the inside of the water storage tank 1, and the side wall of the drain pipe 11 is sealed to the water storage tank 1 by means of sealing ring, glue seal or other methods, so as to completely drain the sediment in the water storage tank 1.

[0048] A manual or automatic valve (not shown in the figure) is provided on the drain pipe 11 to facilitate opening or closing the drain pipe 11;

[0049] During long-term use, impurities such as silt, rust, and calcium and magnesium ions in the water will gradually settle to the bottom of the water storage tank 1. When cleaning and maintenance are required, open the valve on the drain pipe 11 to allow the sediment to be discharged with the water flow. After the sediment is discharged, close the valve. This aims to effectively remove sediment and improve water quality safety. It also aims to reduce the corrosive effects of scale buildup on the water storage tank 1, heating rod 4, ultraviolet lamp 9, and electrolysis device 10.

[0050] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that many other modifications and implementations can be devised by those skilled in the art, which will fall within the scope and spirit of the principles disclosed herein. More specifically, various variations and modifications can be made to the components and / or layout of the subject matter combination within the scope of the disclosure, drawings, and claims. Besides variations and modifications to the components and / or layout, other uses will be apparent to those skilled in the art.

Claims

1. A solar water heater, characterized in that, include: A water storage tank (1) is provided with a cold water pipe (2) at the lower end of the water storage tank (1) and a hot water pipe (3) at the upper end of the water storage tank (1). The electric heating rod (4) is installed in the water storage tank (1), the electric heating rod (4) is located at the upper end of the water storage tank (1), and the electric heating rod (4) is close to the inlet of the hot water pipe (3).

2. The solar water heater according to claim 1, characterized in that: It also includes solar vacuum tubes (5); The solar vacuum tube (5) is disposed on the side wall of the water storage tank (1), and the solar vacuum tube (5) extends radially along the water storage tank (1); The number of solar vacuum tubes (5) is set to a certain number, and the solar vacuum tubes (5) are arranged sequentially from the lower end of the water storage tank (1) to the upper end of the water storage tank (1).

3. The solar water heater according to claim 2, characterized in that: It also includes a support (6); The upper surface of the bracket (6) gradually slopes downward along one side of the bracket (6) toward the other side of the bracket (6); The water storage tank (1) is located at one end of the bracket (6); The solar vacuum tube (5) extends from one end of the bracket (6) to the other end of the bracket (6), and the plurality of solar vacuum tubes (5) are distributed on the upper surface of the bracket (6) from one side of the bracket (6) to the other side of the bracket (6).

4. The solar water heater according to claim 1, characterized in that: It also includes a water supply tank (7); The water supply tank (7) is connected to the cold water pipe (2), and the water supply tank (7) is located above the hot water pipe (3).

5. The solar water heater according to claim 4, characterized in that: The upper end of the water storage tank (1) is provided with an exhaust pipe (8); The exhaust port of the exhaust pipe (8) is located above the water supply tank (7).

6. The solar water heater according to claim 1, characterized in that: It also includes ultraviolet lamps (9); The ultraviolet lamp (9) is installed inside the water storage tank (1), and the ultraviolet lamp (9) is close to the outlet of the cold water pipe (2).

7. The solar water heater according to claim 1, characterized in that: It also includes an electrolysis device (10); The electrolysis device (10) is located inside the water storage tank (1) and is close to the outlet of the cold water pipe (2).

8. The solar water heater according to claim 1, characterized in that: A drain pipe (11) is provided at the lower end of the water storage tank (1).

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