Wind energy and solar energy combined water heater with active adjusting and reversing functions

Abstract

The embodiment of the invention provides a wind energy and solar energy combined water heater with an active adjusting and reversing function, and relates to the technical field of solar energy. The wind energy and solar energy combined water heater with the active adjusting and reversing functions comprises a water storage tank, a heat collecting pipe, a wind power generation device, a driving assembly, an impeller and a storage battery. The two ends of the heat collecting pipe are connected with the water storage tank and extend into the water storage tank, the wind power generation device is connected with the storage battery, the storage battery is connected with the driving assembly, the impeller is rotationally installed in the water storage tank, and the driving assembly is connected with the impeller. According to the wind energy and solar energy combined type water heater, two renewable energy sources of wind energy and solar energy are utilized for cooperative work, water in the heat collecting pipe and water in the water storage tank circularly flow by actively adjusting the water flow reversing function, finally, the water temperature in the water storage tank is evenly increased, and the water heater has the advantages of being efficient and saving energy.

Description

Technical Field

[0001] The invention relates to the technical field of water heaters, and in particular to a wind-solar energy combined water heater with an active regulating and reversing function. Background Art

[0002] With the increase in global energy demand and the enhancement of environmental protection awareness, the use of renewable energy such as solar energy and wind energy has received widespread attention. As an efficient and energy-saving hot water supply device, solar water heaters have been widely used in homes and commercial places. It mainly absorbs solar radiation heat through solar collectors, heats cold water and stores it in hot water tanks. However, traditional solar water heaters mainly rely on natural convection to circulate water. The water circulation method of natural convection relies on the buoyancy effect generated by the density difference between cold water and hot water. When the ambient temperature difference is small, the circulation efficiency is significantly reduced, resulting in a slower heating speed, especially in cloudy days or winter when there is insufficient light. This problem is particularly obvious. The slow speed of natural convection causes the heat in the solar collector to be unable to be quickly transferred to the water tank, and part of the heat energy may be lost to the environment through thermal radiation and heat conduction, thereby reducing the overall thermal efficiency of the system. Summary of the invention

[0003] According to an embodiment of the present invention, a wind-solar combined water heater with active adjustment and reversing function is provided to solve the problems raised by the above background technology.

[0004] In a first aspect of the present invention, a wind-solar combined water heater with active adjustment and reversing function is provided.

[0005] The wind-solar combined water heater with active adjustment and reversing function comprises: a water tank, a heat collecting tube, a wind power generation device, a driving component, an impeller and a battery; the two ends of the heat collecting tube are respectively connected to the water tank and extend into the interior of the water tank, the wind power generation device is connected to the battery for charging the battery, the battery is connected to the driving component for providing electrical energy to the driving component, the impeller is rotatably installed inside the water tank, the driving component is connected to the impeller, and is used to drive the impeller to rotate.

[0006] Preferably, the wind power generation device includes an electric energy converter, a rotating shaft and wind blades; the rotating shaft is connected to the electric energy converter, the electric energy converter is used to convert the rotational force of the rotating shaft into electric energy, the number of the wind blades is three, and the wind blades are fixedly connected to the rotating shaft.

[0007] Preferably, it also includes a frame, which includes a support frame, a first support plate and a second support plate; the water tank and the heat collecting tube are both installed on the support frame, the first support plate and the second support plate are respectively fixedly connected to the support frame, the wind power generation device is installed on the first support plate, and the battery is installed on the second support plate.

[0008] Preferably, the drive assembly includes a motor and a drive shaft; the motor is installed on the outside of the side wall of the water tank, the drive shaft is connected to the output end of the motor, the drive shaft extends into the interior of the water tank, the drive shaft is connected to the side wall of the water tank through a mechanical seal, and the drive shaft passes through the impeller and is fixedly connected to the impeller.

[0009] Preferably, the impeller includes spiral blades and a mounting portion; the mounting portion is fixedly connected to the drive shaft, and the spiral blades are fixedly connected to the mounting portion.

[0010] Preferably, a heating wire is provided inside the water tank, and the heating wire is connected to the battery.

[0011] Preferably, the heat collecting tubes are arranged in a serpentine shape, and temperature sensors are provided on the surfaces of the heat collecting tubes. There are multiple temperature sensors which are arranged equidistantly along the heat collecting tubes.

[0012] Preferably, it also includes a controller, which includes a data receiving module, a data processing module and a control unit; the data receiving module is connected to the temperature sensor and is used to receive the temperature data collected by the temperature sensor, the data receiving module is connected to the data processing module, the data processing module is used to process the temperature data and transmit the processing results to the control unit, and the control unit decides whether to drive the component based on the processed temperature data.

[0013] One or more technical solutions provided in this application have at least the following technical effects or advantages:

[0014] The present invention provides a wind-solar combined water heater with an active adjustment and reversing function. The cold water in the water tank flows into the heat collecting tube through a pipeline. The heat collecting tube absorbs sunlight and converts light energy into heat energy to heat the water in the tube. As the water temperature rises, the hot water with reduced density flows back to the water tank through natural convection. At the same time, part of the cold water in the water tank enters the heat collecting tube, forming a basic natural cycle. The wind power generation device generates electricity through wind energy and transmits the electric energy to the battery for storage. The battery, as the power source of the entire system, provides power support for the drive component. The battery provides electric energy to the drive component, and the drive component drives the impeller to rotate through the transmission shaft. The rotation of the impeller stirs the water in the water tank, making the water flow between the water tank and the heat collecting tube more uniform, thereby accelerating the process of heating the water in the water tank. The heat absorbed by the heat collecting tube gradually heats up the water in the entire water tank through circulation until the water in the water tank reaches the set temperature. When the wind energy is insufficient, the operating speed of the driving assembly is adjusted by the control system to ensure the normal operation of the water circulation and reversing functions. The wind-solar combined water heater of the present invention utilizes the two renewable energy sources of wind energy and solar energy to work together, and actively adjusts the water flow reversing function to make the water in the heat collecting tube and the water in the water storage tank circulate, and finally realizes the uniform increase of the water temperature in the water storage tank, which has the advantages of high efficiency and energy saving.

[0015] It should be understood that the contents described in the summary of the invention are not intended to limit the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The above and other features, advantages and aspects of the embodiments of the present invention will become more apparent with reference to the following detailed description in conjunction with the accompanying drawings. In the accompanying drawings, the same or similar reference numerals represent the same or similar elements, wherein:

[0017] Figure 1 It shows a schematic diagram of the three-dimensional structure of a wind-solar combined water heater with an active adjustment and reversing function according to an embodiment of the present invention;

[0018] Figure 2 A partial cross-sectional structural schematic diagram of a wind-solar combined water heater with an active adjustment and reversing function according to an embodiment of the present invention is shown;

[0019] Figure 3 It shows a schematic diagram of a main cross-sectional structure with an active adjustment and switching function according to an embodiment of the present invention;

[0020] Figure 4 A system block diagram of a temperature sensor and a controller with an active commutation adjustment function according to an embodiment of the present invention is shown.

[0021] Description of Reference Numerals

[0022] 1-water tank, 11-heating wire, 2-heat collecting tube, 21-temperature sensor, 3-wind power generation device, 31-electric energy converter, 32-rotating shaft, 33-wind blade, 4-driving assembly, 41-motor, 42-driving shaft, 5-impeller, 51-spiral blade, 52-installation part, 6-battery, 7-frame, 71-support frame, 72-first support plate, 73-second support plate, 8-controller, 81-module, 82-data processing module, 83-control unit. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In addition, the term "and / or" in this article is only a description of the association relationship between the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0025] like Figures 1 to 4 As shown, the wind-solar combined water heater with active adjustment and reversing function includes: a water tank 1, a heat collecting tube 2, a wind power generation device 3, a driving component 4, an impeller 5 and a battery 6; the two ends of the heat collecting tube 2 are respectively connected to the water tank 1 and extend into the interior of the water tank 1. The wind power generation device 3 is used to convert wind energy into electrical energy, and its output end is connected to the battery 6 to store the electrical energy converted from wind energy in the battery 6 for use by other components of the system. The battery 6 provides electrical energy for the system, one end of which is connected to the wind power generation device 3 for receiving and storing electrical energy, and the other end is connected to the driving component 4 to provide working power for the driving component 4. The impeller 5 is installed inside the water tank 1, and is driven to rotate by the power of the driving component 4 to stir the water in the water tank 1 to make the water flow.

[0026] In actual use, the cold water in the water tank 1 flows into the heat collecting tube 2 through the pipeline. The heat collecting tube 2 absorbs sunlight and converts light energy into heat energy to heat the water in the tube. As the water temperature rises, the hot water with reduced density flows back to the water tank 1 through natural convection. At the same time, part of the cold water in the water tank 1 enters the heat collecting tube 2, forming a basic natural cycle. The wind power generation device 3 generates electricity through wind energy and transmits the electric energy to the battery 6 for storage. The battery 6, as the power source of the entire system, provides power support for the drive component 4. The battery 6 provides power to the drive component 4, and the drive component 4 drives the impeller 5 to rotate through the transmission shaft. The rotation of the impeller 5 stirs the water in the water tank 1, making the water flow between the water tank 1 and the heat collecting tube 2 more uniform, thereby accelerating the process of heating the water in the water tank 1. The heat absorbed by the heat collecting tube 2 gradually heats up the water in the entire water tank 1 through circulation until the water in the water tank 1 reaches the set temperature. When the wind energy is insufficient, the operating speed of the driving assembly 4 is adjusted by the control system to ensure the normal operation of the water circulation and reversing functions. The wind-solar combined water heater of the present invention utilizes the two renewable energy sources of wind energy and solar energy to work together, and actively adjusts the water flow reversing function to make the water in the heat collecting tube 2 and the water in the water storage tank 1 circulate, and finally realizes the uniform increase of the water temperature in the water storage tank 1, which has the advantages of high efficiency and energy saving.

[0027] In this embodiment, the wind power generation device 3 includes an electric energy converter 31, a rotating shaft 32 and wind blades 33; the rotating shaft 32 is connected to the electric energy converter 31, and the electric energy converter 31 is used to convert the rotational force of the rotating shaft 32 into electric energy. The number of the wind blades 33 is three, and the wind blades 33 are fixedly connected to the rotating shaft 32.

[0028] Furthermore, the power converter 31 is a core component of the wind power generation device 3, and its input end is connected to the rotating shaft 32, and is used to convert the rotational force of the rotating shaft 32 into electrical energy. The power converter 31 includes a power generation coil and a pole rotor, generates electrical energy through the principle of electromagnetic induction, and transmits the electrical energy to the battery 6 for storage. The rotating shaft 32 is a key component for transmitting mechanical power, one end of which is connected to the wind blade 33 through a mechanical fixation or a bearing assembly, and the other end is closely matched with the input end of the power converter 31. The rotating shaft 32 rotates under the drive of the wind blade 33, thereby transmitting the mechanical energy of the wind to the power converter 31. The number of wind blades 33 is three, and the blades are designed to be equal in length, equidistantly distributed and fixedly mounted on the rotating shaft 32. The material of the wind blade 33 is a lightweight and durable composite material or aluminum alloy to reduce wind resistance and improve wind resistance. Its surface is designed with a streamlined structure to optimize the efficiency of wind energy capture. The three wind blades 33 are evenly distributed at an angle of 120° to ensure balance and stability during rotation, thereby maximizing the wind energy conversion efficiency. When wind force acts on the wind blades 33, the blades are driven by the wind force to rotate around the rotation axis 32. The rotation axis 32 transmits the rotational force of the wind blades 33 to the power converter 31, and the power converter 31 converts the rotational force into electrical energy through electromagnetic induction. The generated electrical energy is transmitted to the battery 6 for storage and used for the drive component 4 or other power demand equipment in the drive system.

[0029] In this embodiment, a frame 7 is also included, and the frame 7 includes a support frame 71, a first support plate 72 and a second support plate 73; the support frame 71 is the main bearing structure of the entire device, which is used to support and fix the water storage tank 1 and the heat collecting tube 2. The support frame 71 is made of high-strength metal material and has good pressure resistance and corrosion resistance to ensure stability in long-term use. The first support plate 72 is fixedly connected to the support frame 71 and is specifically used to install the wind power generation device 3. The first support plate 72 is firmly connected to the support frame 71 by bolts or welding, and the structure is optimized according to the weight and vibration characteristics of the wind power generation device 3 to ensure that the wind power generation device 3 remains stable during operation. The second support plate 73 is fixedly connected to the support frame 71 and is used to install the battery 6. The second support plate 73 has an anti-slip design and is provided with a battery fixing device (such as a battery buckle or bracket) to prevent the battery 6 from shifting due to external vibration or environmental changes.

[0030] In this embodiment, the drive assembly 4 includes a motor 41 and a drive shaft 42; the motor 41 is the core power source of the drive assembly 4, which is installed on the outer side wall of the water tank 1, and is fixedly connected by bolts, which is convenient for later maintenance and replacement. The motor 41 is connected to the battery 6 through a cable, and receives electrical energy from the battery 6 to provide power output. One end of the drive shaft 42 is connected to the output end of the motor 41, and the other end passes through the side wall of the water tank 1 and extends into the interior of the water tank 1, and is sealed with the water tank 1 through a mechanical seal to prevent water from leaking to the outside of the motor. The end of the drive shaft 42 is fixedly connected to the impeller 5, and the material of the drive shaft 42 is a high-strength rust-proof metal to ensure that it is not corroded during long-term operation in a water environment. The drive shaft 42 is connected to the side wall of the water tank 1 through a mechanical seal, which is made of high-temperature resistant and corrosion-resistant materials, which can effectively prevent the water inside the water tank 1 from leaking to the outside, while ensuring the flexible rotation of the drive shaft 42. The driving shaft 42 passes through the center of the impeller 5 and is fixedly connected to the impeller 5 by a key connection or bolts, so that the rotational force of the motor 41 is directly transmitted to the impeller 5, thereby driving the impeller 5 to rotate to stir the water flow inside the water tank 1.

[0031] In this embodiment, the impeller 5 includes a spiral blade 51 and a mounting portion 52; the mounting portion 52 is fixedly connected to the drive shaft 42, and the spiral blade 51 is fixedly connected to the mounting portion 52. The spiral blade 51 is a key component of the impeller 5, which is designed as a multi-layer spiral structure. Through the scientific spiral angle design, the water flow forms a strong and uniform water flow kinetic energy when the impeller rotates, thereby enhancing the water circulation effect inside the water storage tank 1. The material of the spiral blade 51 is high-strength corrosion-resistant plastic or stainless steel to ensure durability for long-term operation. The mounting portion 52 is used to connect the spiral blade 51 to the drive shaft 42, and a mechanical fixing method (such as bolt or key connection) is adopted to ensure efficient transmission of power. The design of the mounting portion 52 takes into account installation stability and maintenance convenience, so that the impeller 5 is easy to disassemble and replace. The mounting portion 52 is fixedly connected to the drive shaft 42 to ensure that the rotational force of the drive shaft 42 can be directly transmitted to the spiral blade 51, thereby driving the water flow circulation; the spiral blade 51 is fixedly connected to the mounting portion 52 by welding or snap-fitting to improve the structural stability during operation.

[0032] In this embodiment, a heating wire 11 is installed inside the water tank 1 to assist heating of the water in the water tank 1 when solar energy is insufficient or wind is weak. The heating wire 11 is connected to the battery 6 via a cable, and uses electric energy as a heating source. The heating wire 11 can be started and stopped by a temperature control switch or an intelligent control system. When the water temperature in the water tank 1 is lower than the set value, the heating wire 11 automatically starts to heat the water to avoid interruption of hot water supply.

[0033] In this embodiment, the heat collecting tube 2 is arranged in a serpentine shape, and a temperature sensor 21 is provided on the surface of the heat collecting tube 2. There are multiple temperature sensors 21, and the temperature sensors 21 are evenly arranged along the length direction of the heat collecting tube 2. Each sensor is fixed to the surface of the heat collecting tube 2 by bonding or embedding to ensure the accuracy of the measurement data.

[0034] In this embodiment, a controller 8 is also included, and the controller 8 includes a data receiving module 81, a data processing module 82 and a control unit 83; the data receiving module 81 is connected to the temperature sensor 21, and is used to receive the temperature data collected by the temperature sensor 21, and the data receiving module 81 is connected to the data processing module 82, and the data processing module 82 is used to process the temperature data and transmit the processing result to the control unit 83, and the control unit 83 decides whether to drive the drive component 4 based on the processed temperature data.

[0035] The data receiving module 81 is connected to the temperature sensor 21 and is used to receive the temperature data collected by the temperature sensor 21. The temperature data of multiple temperature sensors 21 are transmitted to the data receiving module 81 through a wired connection (such as a cable) or wirelessly to ensure the real-time and accuracy of data transmission. According to whether the temperature data reaches the set threshold, it is decided whether to send a start or stop command to the drive component 4 to adjust the speed of the impeller 5, thereby accelerating or slowing down the water circulation.

[0036] For example, suppose there are N temperature sensors T1, T2, ..., T N , the collected position temperature data are t1, t2, ..., t N (Unit: ℃).

[0037] Calculate the average temperature of the collector tube,

[0038]

[0039] Calculate the temperature gradient between adjacent sensors to determine whether the temperature distribution is uniform:

[0040] G i =t i+1 -t i (for i=1,2,...,N-1)

[0041] Maximum temperature gradient:

[0042] G max =max(|G1|,|G2|,...,|G N-1 |)

[0043] The degree of non-uniformity of temperature distribution can be defined as the standard deviation of all temperature gradients:

[0044]

[0045] in,

[0046]

[0047] Calculate the heat distribution in the collector tube based on the heat capacity of water:

[0048] Q i =m i c(t i -t ref )

[0049] in:

[0050] Q i is the amount of heat at position i (unit: J).

[0051] m i is the mass of water at position i of the collector (unit: kg).

[0052] c is the specific heat capacity of water (approximately 4184 J / (kg\cdotp℃)).

[0053] t ref is the reference temperature of cold water (usually the temperature of unheated water in the storage tank, unit: °C)

[0054] Total calories:

[0055]

[0056] Average heat distribution:

[0057]

[0058] Cycle judgment condition, if the temperature distribution is uneven grad Exceeding the set threshold D thresh , then start the loop, If D grad >D thresh Start the loop.

[0059] If the total heat Q total Target calorie Q not reached target , then start the loop: If Q total <Q target , start the loop.

[0060] Combined with the temperature gradient and total heat conditions, the comprehensive judgment logic of cycle start, If(D grad >D thresh )or(Q total <Q target), the circulation is started; otherwise, the system maintains the current state and no water circulation is performed.

[0061] D thresh : Temperature gradient non-uniformity threshold (determined according to system design, for example 5°C).

[0062] Q target : Target heat, usually determined by the user's hot water demand and the capacity of the water storage tank (unit: J)

[0063] t ref : Refer to cold water temperature, default setting value, for example 25℃.

[0064] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A wind-solar combined water heater with active adjustment and reversing function, characterized in that: include: A water tank (1), a heat collecting tube (2), a wind power generating device (3), a driving assembly (4), an impeller (5) and a storage battery (6); the two ends of the heat collecting tube (2) are respectively connected to the water tank (1) and extend into the interior of the water tank (1); the wind power generating device (3) is connected to the storage battery (6) for charging the storage battery (6); the storage battery (6) is connected to the driving assembly (4) for providing electric energy to the driving assembly (4); the impeller (5) is rotatably mounted inside the water tank (1); the driving assembly (4) is connected to the impeller (5) and is used to drive the impeller (5) to rotate.

2. The wind-solar combined water heater with active adjustment and reversing function according to claim 1 is characterized in that: The wind power generation device (3) comprises an electric energy converter (31), a rotating shaft (32) and wind blades (33); the rotating shaft (32) is connected to the electric energy converter (31), the electric energy converter (31) is used to convert the rotating force of the rotating shaft (32) into electric energy, the number of the wind blades (33) is three, and the wind blades (33) are fixedly connected to the rotating shaft (32).

3. The wind-solar combined water heater with active adjustment and reversing function according to claim 2 is characterized in that: It also includes a frame (7), the frame (7) including a support frame (71), a first support plate (72) and a second support plate (73); the water storage tank (1) and the heat collecting tube (2) are both mounted on the support frame (71), the first support plate (72) and the second support plate (73) are respectively fixedly connected to the support frame (71), the wind power generation device (3) is mounted on the first support plate (72), and the storage battery (6) is mounted on the second support plate (73).

4. The wind-solar combined water heater with active adjustment and reversing function according to claim 1 is characterized in that: The driving assembly (4) comprises a motor (41) and a driving shaft (42); the motor (41) is mounted on the outside of the side wall of the water tank (1); the driving shaft (42) is connected to the output end of the motor (41); the driving shaft (42) extends into the interior of the water tank (1); the driving shaft (42) is connected to the side wall of the water tank (1) via a mechanical seal; the driving shaft (42) passes through the impeller (5) and is fixedly connected to the impeller (5).

5. The wind-solar combined water heater with active adjustment and reversing function according to claim 1, characterized in that: The impeller (5) comprises a spiral blade (51) and a mounting portion (52); the mounting portion (52) is fixedly connected to the drive shaft (42), and the spiral blade (51) is fixedly connected to the mounting portion (52).

6. The wind-solar combined water heater with active adjustment and reversing function according to claim 1, characterized in that: A heating wire (11) is arranged inside the water storage tank (1), and the heating wire (11) is connected to the storage battery (6).

7. The wind-solar combined water heater with active adjustment and reversing function according to claim 1, characterized in that: The heat collecting tubes (2) are arranged in a serpentine shape, and a temperature sensor (21) is provided on the surface of the heat collecting tube (2). There are a plurality of temperature sensors (21) which are arranged at equal distances along the heat collecting tube (2).

8. The wind-solar combined water heater with active adjustment and reversing function according to claim 1, characterized in that: The invention also comprises a controller (8), wherein the controller (8) comprises a data receiving module (81), a data processing module (82) and a control unit (83); the data receiving module (81) is connected to the temperature sensor (21) and is used to receive temperature data collected by the temperature sensor (21); the data receiving module (81) is connected to the data processing module (82); the data processing module (82) is used to process the temperature data and transmit the processing result to the control unit (83); the control unit (83) determines whether to send a signal to the drive component (4) based on the processed temperature data.

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