Solar water heater

Abstract

The utility model belongs to the technical field of water heaters, and particularly relates to a solar water heater which comprises a water storage tank and further comprises an electric heating device located in the water storage tank so as to heat water in the water storage tank; the photovoltaic panel is located on the water storage tank and is matched with the water storage tank in shape; and the storage battery is used for receiving and storing the electric energy converted by the photovoltaic panel, and the storage battery is further connected with the electric heating device to supply power to the electric heating device, so that the operation cost of the solar water heater can be effectively reduced while the size of the solar water heater is not increased too much.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of water heaters, and particularly relates to a solar water heater. BACKGROUND

[0002] The solar water heater converts solar energy into heat energy, does not need to consume fuel, and does not produce pollutant emissions. Compared with electric water heaters and gas water heaters, the solar water heater has a lower operation cost and can save a large amount of expenses.

[0003] However, the solar water heater also has defects. When the water consumption is large on a rainy day or at night, it is difficult to meet the use demand. Therefore, the solar water heater generally needs to be equipped with an electric heating device for use, which indirectly increases the operation cost of the solar water heater.

[0004] To this end, the solar water heater is combined with a photovoltaic panel to store electric energy through the photovoltaic panel. When the solar heating is insufficient, the stored electric energy is used to heat the electric heating device, so as to provide hot water. However, in this way, the photovoltaic panel needs to occupy a certain space for arrangement, which greatly increases the volume of the solar water heater. CONTENT OF THE INVENTION

[0005] The application provides a solar water heater to solve the problem that the volume of the solar water heater is greatly increased when the solar water heater is combined with a photovoltaic panel.

[0006] In a first aspect, the application provides a solar water heater, a water storage tank, and further comprising:

[0007] An electric heating device, which is located in the water storage tank to heat the water in the water storage tank;

[0008] A photovoltaic panel, which is located on the water storage tank and is adapted to the shape of the water storage tank;

[0009] A storage battery, which is used to receive and store the electric energy converted by the photovoltaic panel, and is further connected with the electric heating device to supply power to the electric heating device.

[0010] In a possible design, the water storage tank is cylindrical, the photovoltaic panel includes a curved panel, and the curved panel is arranged outside the side surface of the water storage tank.

[0011] In a possible design, the photovoltaic panel further includes end plates separately arranged at two ends of the curved panel, and the end plates are correspondingly arranged outside the end surfaces of the water storage tank.

[0012] In a possible design, an adjusting device is further included, and the adjusting device is connected with the photovoltaic panel.

[0013] The photovoltaic panel is rotationally connected with the water storage tank, and the adjusting device is configured to drive the photovoltaic panel to rotate so as to adjust the relative position between the photovoltaic panel and the water storage tank.

[0014] In a possible design, the adjusting device comprises a driving member and a rotating shaft in transmission connection with the driving member, the photovoltaic panel is connected with the rotating shaft, and the driving member is configured to drive the rotating shaft to rotate so as to drive the photovoltaic panel to rotate.

[0015] In a possible design, the rotating shaft is connected with the end plate, and the water storage tank is provided with a support shaft at an end away from the rotating shaft, and the photovoltaic panel is rotationally connected with the support shaft.

[0016] The rotating shaft and the support shaft are coaxially arranged with the water storage tank.

[0017] In a possible design, the adjusting device further comprises a controller, the controller is in communication connection with the battery and the driving member, and the battery is connected with the driving member.

[0018] The controller is configured to control the driving member to drive the photovoltaic panel to rotate so as to adapt the orientation of the photovoltaic panel to the illumination direction of the sun according to the illumination direction of the sun.

[0019] In a possible design, the controller is further in communication connection with the electric heating device, and the controller is configured to control the electric heating device to heat the water in the water storage tank to a preset water temperature if the water temperature in the water storage tank is lower than the preset water temperature within a preset time period.

[0020] In a possible design, the water storage tank is provided with a limiting member, and there is at least one limiting member on each side of the photovoltaic panel, so as to limit the rotation angle of the photovoltaic panel by the limiting member.

[0021] In a possible design, two limiting members are arranged on each side of the photovoltaic panel, and the two limiting members are arranged at two ends of the water storage tank respectively to contact the two ends of the photovoltaic panel respectively, so as to limit the position of the photovoltaic panel.

[0022] The solar water heater provided by the application has the advantages that the photovoltaic panel, the storage battery and the electric heating device are arranged, the photovoltaic panel is arranged on the water storage tank and is matched with the shape of the water storage tank, the photovoltaic panel converts light energy into electric energy and stores the electric energy in the storage battery, the photovoltaic panel is arranged in the water storage tank, the use of the heat collecting pipe of the solar water heater is not affected, the space occupied by the solar water heater is not excessively increased, when the hot water in the water storage tank cannot meet the water demand of the user, the electric heating device can be powered by the storage battery and auxiliary heating is performed by the electric heating device, so that the use demand of the user can be met, and therefore, the space occupied by the solar water heater can be not excessively increased, and the operation cost of the solar water heater can be effectively reduced. BRIEF DESCRIPTION OF DRAWINGS

[0023] The drawings incorporated into the specification and forming a part of the specification, show embodiments consistent with the application, and together with the specification serve to explain the principles of the application.

[0024] Figure 1 The structure schematic view of the solar water heater provided by the embodiment of the application is shown in the drawings.

[0025] Figure 2 The structure schematic view of the solar water heater provided by the embodiment of the application is shown in the drawings.

[0026] Reference signs:

[0027] 100 - water storage tank;

[0028] 110 - limiting piece;

[0029] 200 - electric heating device;

[0030] 300 - photovoltaic panel;

[0031] 310 - curved panel;

[0032] 320 - end plate;

[0033] 330 - support shaft;

[0034] 400 - storage battery;

[0035] 500 - controller;

[0036] 600 - adjusting device;

[0037] 700 - heat collecting pipe.

[0038] The specific embodiments of the application have been shown in the above drawings, and will be described in more detail hereinafter. The drawings and the written description are not intended to limit the scope of the concept of the application in any way, but to illustrate the concept of the application for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present application clearer, the technical solutions in the present application will be described clearly and completely below with reference to the drawings in the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0040] It should be noted that all the directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, motion condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directionality indications also change accordingly.

[0041] In the present application, unless specifically defined and limited otherwise, the terms "connection", "fixed", etc. should be understood in a broad sense, for example, "fixed" can be fixed connection, or detachable connection, or integral; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium; can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0042] In addition, if the present application has descriptions involving "first", "second", etc., the "first", "second", etc. are only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. For example, "A and / or B" includes A solution, or B solution, or A and B solution. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the fact that a person of ordinary skill in the art can realize it. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0043] The solar water heater is a clean energy, recyclable hot water preparation device. It converts solar energy into heat energy, does not consume fuel, and does not produce pollutant emissions. Compared with electric fuel water heaters, its operating cost is much lower, and a large amount of fees can be saved in long-term use. At the same time, the solar water heater is simple to maintain in daily use. There is continuous hot water as long as there is sunlight, and it is also more convenient to use.

[0044] However, in the case of rainy days and insufficient water supply at night, the solar water heater can only rely on electric auxiliary heating to meet the hot water demand, which indirectly increases the operation cost of preparing hot water.

[0045] To this end, the solar water heater is combined with a photovoltaic panel to store electric energy through the photovoltaic panel, and when the solar heating is insufficient, the stored electric energy is used to heat the electric heating device to provide hot water. However, in this way, the photovoltaic panel needs to occupy a certain space for arrangement, which will greatly increase the volume of the solar water heater.

[0046] To this end, the solar water heater is combined with a photovoltaic panel to store electric energy through the photovoltaic panel, and when the solar heating is insufficient, the stored electric energy is used to heat the electric heating device to provide hot water. However, in this way, the photovoltaic panel needs to occupy a certain space for arrangement, which will greatly increase the volume of the solar water heater.

[0047] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can exist independently or in combination. For the same or similar concepts or processes, some embodiments may not be described again. The embodiments of the present application will be described below with reference to the accompanying drawings.

[0048] Figure 1 The structure diagram of the solar water heater provided by the embodiments of the present application is shown in Figure 2 The structure diagram of the solar water heater provided by the embodiments of the present application is shown in

[0049] In some embodiments of the present application, please refer to Figure 1 and Figure 2 The solar water heater includes a water storage tank 100 and a heat collector.

[0050] The water storage tank 100 is used to store water, and the heat collector 700 is used to absorb solar energy and convert it into heat energy to heat the water in the water storage tank 100, thereby supplying hot water to users.

[0051] The solar water heater further includes an electric heating device 200, which can be a direct current heating pipe. The direct current heating pipe has high conversion heating efficiency, can effectively improve the heating speed, shorten the hot water heating time, and has less loss in the transmission process compared with alternating voltage. In addition, direct current voltage can achieve more accurate temperature regulation.

[0052] The electric heating device 200 is located in the water storage tank 100, and is used to convert electric energy into heat energy to heat the water in the water storage tank 100 to a temperature required by a user to meet the water demand of the user when the water heated by the heat collecting pipe 700 cannot meet the water demand of the user on a rainy day or at night.

[0053] The biggest difference of the embodiment is that the solar water heater further comprises a photovoltaic panel 300 and a storage battery 400, the photovoltaic panel 300 is located on the water storage tank 100 and is matched with the shape of the water storage tank 100. The storage battery 400 is connected with the photovoltaic panel 300, and when the photovoltaic panel 300 converts solar energy into electric energy, the electric energy is input into the storage battery 400 for storage. The storage battery 400 is also connected with the electric heating device 200, and when the water in the water storage tank 100 needs to be heated by the electric heating device 200, the storage battery 400 supplies power to the electric heating device 200, so that the solar water heater does not need to be externally connected with a power supply, and the operation cost of the solar water heater can be reduced.

[0054] Meanwhile, the photovoltaic panel 300 is arranged on the water storage tank 100, so that an additional support for installing the photovoltaic panel 300 is not needed, and the photovoltaic panel 300 is stacked with the water storage tank 100, which does not occupy additional space and does not block the heat collector of the solar water heater.

[0055] In addition, the solar water heater can further comprise a controller 500 and sensors such as a temperature sensor and a water level sensor, and the electric heating device 200, the storage battery 400, the water level sensor and the temperature sensor are connected with the controller 500.

[0056] In use, the photovoltaic panel 300 is connected in series and in parallel to form a square array of batteries, so that the voltage of the square array reaches the requirement of the input voltage of the system, and the electric energy converted from light energy is stored in the storage battery 400. The water level sensor can detect the water level information in the water storage tank 100 and transmit the information to the controller 500 to supply water to the water storage tank 100 in time. The temperature sensor obtains the real-time water temperature in the water storage tank 100 and transmits the temperature to the controller 500. When the hot water heated by the heat collecting pipe 700 cannot meet the hot water supply demand at night or on a rainy day, the real-time water temperature is less than a preset water temperature, and at this time, the controller 500 controls the storage battery 400 to supply power to the electric heating device 200 to heat the water in the water storage tank 100. When the water temperature reaches the preset temperature, the controller 500 controls the storage battery 400 to stop supplying power to the electric heating device 200 or controls the electric heating device 200 to stop working.

[0057] In some embodiments of the present application, the water storage tank 100 is cylindrical, and the photovoltaic panel 300 is arc-shaped, i.e., the surface of the photovoltaic panel 300 is curved, and is preferably coaxially arranged with the water storage tank 100.

[0058] The photovoltaic panel 300 is fixed on the upper surface of the water storage tank 100, i.e. a position where the sunlight can be received, so that the space can be saved, and the arc-shaped structure can also avoid the accumulation of shielding objects such as leaves and dust on the surface of the photovoltaic panel 300, thereby reducing the influence of impurities on the light energy absorption of the photovoltaic panel 300.

[0059] In some embodiments of the present application, the adjusting device 600 is connected with the photovoltaic panel 300. The photovoltaic panel 300 is rotationally connected with the water storage tank 100, and the adjusting device 600 is used to drive the photovoltaic panel 300 to rotate, so as to adjust the relative position between the photovoltaic panel 300 and the water storage tank 100.

[0060] Specifically, the photovoltaic panel 300 is rotationally connected with the water storage tank 100, and the photovoltaic panel 300 is driven to rotate by the adjusting device 600, so that the photovoltaic panel 300 can be rotated to different positions in different time periods to adapt to the irradiation direction of the sun, thereby improving the use effect of the photovoltaic panel 300.

[0061] Further, the adjusting device 600 includes a driving member and a rotating shaft in transmission connection with the driving member, and the photovoltaic panel 300 is connected with the rotating shaft. The driving member can drive the rotating shaft to rotate, so as to drive the photovoltaic panel 300 to rotate.

[0062] Specifically, the photovoltaic panel 300 can be connected with the rotating shaft by a common connection mode such as key connection or bolt connection, as long as the photovoltaic panel 300 can rotate synchronously with the rotating shaft. The present embodiment does not limit the same.

[0063] The driving member can be a motor or other equipment, as long as it can drive the rotating shaft to rotate. The present embodiment does not limit the same.

[0064] The driving member can be in communication connection with the controller 500. The controller 500 can determine the real-time incident angle of the sun according to the region where the solar water heater is located and the current season, so as to control the driving member to drive the rotating shaft and the photovoltaic panel 300 to rotate by a corresponding angle, so that the photovoltaic panel 300 can be at an angle most suitable for absorbing the sunlight irradiation.

[0065] In some embodiments of the present application, the photovoltaic panel 300 includes a curved panel 310 and two end plates 320. The two end plates 320 are separately arranged at two ends of the curved panel 310. The side of the end plate 320 connected with the curved panel 310 is also arc-shaped. The curved panel 310 is arranged on the outer side of the curved surface of the water storage tank 100, and the end plate 320 is arranged on the end of the water storage tank 100.

[0066] In this way, the area of the photovoltaic panel 300 that can receive light can be increased, and the water storage tank 100 can also be better protected from external impurities directly accumulating on the surface of the water storage tank 100.

[0067] Further, the two end plates 320 of the photovoltaic panel 300 can be rotatably connected to the two ends of the water storage tank 100 to better support the photovoltaic panel 300.

[0068] Specifically, a rotating shaft and a supporting shaft 330 can be arranged at the two ends of the photovoltaic panel 300. The supporting shaft 330 is rotatably connected to one end plate 320 of the photovoltaic panel 300 through a bearing and fixedly connected to the water storage tank 100. The rotating shaft passes through the other end plate 320 of the photovoltaic panel 300 and is rotatably connected to the water storage tank 100 through a bearing or the like. Of course, the rotating shaft can not be connected to the water storage tank 100, but directly connected to the photovoltaic panel 300 through the supporting shaft 330.

[0069] It can be understood that the rotating shaft, the supporting shaft 330 and the water storage tank 100 are coaxially arranged, and the rotating shaft can drive the photovoltaic panel 300 to rotate around the supporting shaft 330.

[0070] In some embodiments of the present application, the water storage tank 100 is provided with a limiting block, and at least one limiting piece 110 is arranged on each side of the photovoltaic panel 300 to limit the rotation angle of the photovoltaic panel 300 through the limiting piece 110.

[0071] Specifically, when the rotating shaft drives the photovoltaic panel 300 to rotate, if it rotates to the maximum rotation position on each side, it will collide with the limiting piece 110, so that the photovoltaic panel 300 cannot continue to rotate, thereby stopping the rotation of the photovoltaic panel 300.

[0072] It can be understood that the limiting piece 110 can be a common limiting block or a travel switch. When the limiting piece 110 is a travel switch, the limiting piece 110 can be connected to the controller 500. When the photovoltaic panel 300 collides with the limiting piece 110, the travel switch is triggered. At this time, the travel switch sends a signal to the controller 500, and the controller 500 controls the driving piece to stop working, so that the photovoltaic panel 300 stops rotating.

[0073] Further, when the limiting piece 110 is a limiting block, in order to improve the limiting effect, two limiting pieces 110 can be arranged on each side of the photovoltaic panel 300, and the two limiting pieces 110 are arranged at the two ends of the water storage tank 100 to respectively contact the two ends of the photovoltaic panel 300 and limit the position of the photovoltaic panel 300.

[0074] So far, the technical solutions of the present application have been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A solar water heater comprising a storage tank (100), characterized in that, Also comprising: An electric heating device (200) located in the water storage tank (100) to heat the water in the water storage tank (100); A photovoltaic panel (300) located on the water storage tank (100) and matched with the shape of the water storage tank (100); A storage battery (400) used to receive and store the converted electric energy of the photovoltaic panel (300) and connected with the electric heating device (200) to supply power for the electric heating device (200).

2. The solar water heater of claim 1, wherein The water storage tank (100) is cylindrical, the photovoltaic panel (300) comprises a curved panel (310) covering the side of the water storage tank (100).

3. The solar water heater of claim 2, wherein, The photovoltaic panel (300) further comprises end plates (320) respectively arranged at both ends of the curved panel (310), and the end plates (320) correspondingly cover the end faces of the water storage tank (100).

4. A solar water heater as claimed in claim 3 wherein, Further comprising an adjusting device (600) connected with the photovoltaic panel (300); Wherein, the photovoltaic panel (300) is rotationally connected with the water storage tank (100), and the adjusting device (600) is configured to drive the photovoltaic panel (300) to rotate to adjust the relative position between the photovoltaic panel (300) and the water storage tank (100).

5. The solar water heater of claim 4, wherein, The adjusting device (600) comprises a driving member and a rotating shaft in transmission connection with the driving member, the photovoltaic panel (300) is connected with the rotating shaft, and the driving member is configured to drive the rotating shaft to rotate to make the photovoltaic panel (300) rotate.

6. A solar water heater as claimed in claim 5 wherein, The rotating shaft is connected with the end plate (320), and the water storage tank (100) is provided with a support shaft (330) at the end away from the rotating shaft, and the photovoltaic panel (300) is rotationally connected with the support shaft (330); Wherein, the rotating shaft and the support shaft (330) are coaxially arranged with the water storage tank (100).

7. The solar water heater of claim 5, wherein, Further comprising a controller (500) in communication connection with the storage battery (400) and the driving member, and the storage battery (400) is connected with the driving member; Wherein, the controller (500) is configured to control the driving member to drive the photovoltaic panel (300) to rotate according to the illumination direction of the sun, so that the orientation of the photovoltaic panel (300) is matched with the illumination direction of the sun.

8. The solar water heater of claim 7, wherein, The controller (500) is also in communication connection with the electric heating device (200), and the controller (500) is configured to control the electric heating device (200) to heat the water in the water storage tank (100) to the preset water temperature when the user takes hot water, if the water temperature in the water storage tank (100) is lower than the preset water temperature.

9. A solar water heater as claimed in any one of claims 4 to 8, wherein, The water storage tank (100) is provided with a limiting member (110), and there is at least one limiting member (110) on each side of the photovoltaic panel (300) to limit the rotation angle of the photovoltaic panel (300) through the limiting member (110).

10. The solar water heater of claim 9, wherein, Two limiting pieces (110) are arranged on both sides of the photovoltaic panel (300), and the two limiting pieces (110) are arranged at two ends of the water storage tank (100) respectively to contact with both ends of the photovoltaic panel (300) respectively, so as to limit the position of the photovoltaic panel (300).

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