A solar continuous heating system device based on gas-water density difference driving

Abstract

The application discloses a kind of solar continuous heating system devices based on gas-water density difference drive, it is related to solar heating technical field, solve the problem of insufficient power of existing solar heating natural circulation structure, high energy consumption of mechanical circulation, high cost.The water outlet of solar water heater, paraffin time energy storage tank device and radiator are sequentially communicated, the water outlet of radiator is communicated by ascending water pipeline and bubble separation device, bubble separation device and solar water heater water inlet are communicated;Ascending water pipeline bottom is provided with hand-pressing type air inflation aeration device;Hand-pressing type air inflation aeration device blows into bubble into pipeline, and provides power for the water circulation in device, and bubble is discharged through bubble separation device.The application utilizes gas-water density difference to realize the circulation drive of water in heating system, realizes cold water backflow, relies on bubble separation device to discharge bubble, avoids gas into solar water heater to influence efficiency and bubble accumulation to generate airlock phenomenon, ensures stable operation of system.

Description

Technical Field

[0001] The present invention relates to the technical field of solar heating, and in particular to a solar continuous heating system device driven by air-water density difference. Background Art

[0002] Rural residents in the north have an urgent need for energy-saving, convenient, and low-cost heating methods. However, traditional solar heating systems rely on circulating water pumps, which have the problem of high pump purchase and operation and maintenance costs. Their operating energy consumption accounts for a large proportion under different working conditions, and the closed pressure-bearing system is prone to air blockage, further increasing energy consumption. At the same time, the intermittent nature of solar heating requires pumps to supplement power, which brings high electricity bills to rural residents, especially those in underdeveloped areas in the north. In addition, the existing natural circulation structure is insufficiently powered, and the mechanical circulation has high energy consumption, high maintenance costs, and inconvenient switching, making it difficult to meet the actual heating needs of rural areas. Based on this, our team aims to develop a non-electrically driven mechanical circulation device to solve the above problems. Summary of the Invention

[0003] To address the aforementioned issues of insufficient power in existing solar water heaters with natural circulation, high energy consumption, and high costs associated with mechanical circulation, this invention proposes a continuous solar heating system driven by the difference in air-water density. This system utilizes the air-water density difference to circulate water within the heating system, achieving cold water return. Simultaneously, a bubble separator at the top of the system expels air bubbles within the system, preventing gas from entering the solar water heater, impacting efficiency, and preventing bubble accumulation and resulting in air locks, thus ensuring stable system operation.

[0004] The present invention proposes a solar continuous heating system device driven by the difference in air-water density, which specifically includes a hand-pressure aeration device, a radiator, a paraffin time-sharing energy storage tank device, a solar water heater and a bubble separation device. The water outlet of the solar water heater is connected to the water inlet of the paraffin time-sharing energy storage tank device, the water outlet of the paraffin time-sharing energy storage tank device is connected to the water inlet of the radiator, the water outlet of the radiator is connected to the bubble separation device through a rising water pipe, and the bubble separation device is connected to the water inlet of the solar water heater; a hand-pressure aeration device is provided at the bottom of the rising water pipe; the hand-pressure aeration device injects bubbles into the pipe to provide power for water circulation inside the device, and the bubbles are discharged through the bubble separation device.

[0005] Furthermore, the hand-pressure aeration device includes a bubble generator, a high-pressure gas tank and a hand-pressure air pump. The hand-pressure air pump, the high-pressure gas tank, the bubble generator and the rising water pipe are connected in sequence, and a one-way valve is provided between the hand-pressure air pump and the high-pressure gas tank.

[0006] Furthermore, a pressurizing valve and a gas flow meter are sequentially arranged between the high-pressure gas tank and the bubble generator.

[0007] Furthermore, the high-pressure gas tank is provided with a pressure gauge.

[0008] Furthermore, the bubble separation device includes a horizontal pipe, an air collecting pipe structure and a water collecting pipe structure. One end of the horizontal pipe is connected to the rising water pipe, and the other end is closed; an air collecting pipe structure is provided on the upper side of the horizontal pipe, and a water collecting pipe structure is provided on the lower side. The water collecting pipe structure is connected to the solar water heater; a manual ball valve is provided at the upper end of the air collecting pipe structure.

[0009] Furthermore, the horizontal distance between the gas collecting pipe structure and the rising water pipe is smaller than the horizontal distance between the water collecting pipe structure and the rising water pipe.

[0010] Furthermore, the gas collecting pipe structure includes several gas collecting pipes, which are equidistantly arranged on the upper side of the horizontal pipe, and the upper ends of the gas collecting pipes are merged and connected; the water collecting pipe structure includes several water collecting pipes, which are equidistantly arranged on the lower side of the horizontal pipe, and the lower ends of the water collecting pipes are merged and connected.

[0011] Furthermore, the paraffin time-sharing energy storage tank device includes a shunt header, several header-type heat exchange tubes, a junction box and a box body. The shunt header, header-type heat exchange tubes and junction box are arranged inside the box body. The upper end of the shunt header is connected to the solar water heater, and the lower end is connected to the junction box through several header-type heat exchange tubes; paraffin energy storage material is arranged in the box body.

[0012] Furthermore, the header-type heat exchange tube is provided with a plurality of fins.

[0013] The beneficial effects of the solar continuous heating system device based on gas-water density difference drive described in the present invention are:

[0014] (1) The solar continuous heating system device driven by the air-water density difference described in the present invention solves the problems of insufficient power of the existing solar heating natural circulation structure, high energy consumption of the mechanical circulation, and high cost. It adopts a human-driven pressurized air-blowing device, abandons the circulating water pump that traditional heating relies on, completely saves the purchase, operation and maintenance costs of the pump, and greatly reduces the cost. It is especially suitable for areas such as rural areas in the north that are sensitive to heating costs.

[0015] (2) The solar continuous heating system device described in the present invention, driven by the difference in gas-water density, achieves an efficient heat exchange cycle between the radiator and the solar water heater by rationally designing the device structure, namely, using a hand-operated air pump, a high-pressure gas tank, and a bubble generator to create a small pressure difference to drive the return of cold water. Furthermore, the bubble separation device utilizes the density difference to achieve gas-liquid separation, effectively preventing gas from entering the solar water heater and affecting efficiency, and preventing bubble accumulation and gas plugging, thereby ensuring stable operation of the system.

[0016] (3) The solar continuous heating system device driven by the air-water density difference described in the present invention adopts paraffin phase change energy storage material with high latent heat value to store a large amount of heat energy when solar energy is sufficient during the day, and releases heat at night or when solar energy cannot be used to maintain heating, thereby effectively solving the intermittent problem of solar heating, extending the heating time, and not affecting the indoor heating effect.

[0017] (4) The solar continuous heating system device driven by the difference in gas-water density described in the present invention is simple and labor-saving to operate. It only needs to pressurize the high-pressure gas tank with a hand-operated air pump. The pressurization can last for a long time. The device operates safely and reliably, and the circulation efficiency meets the requirements. It has high practicality and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0019] In the attached figure:

[0020] Figure 1 This is a schematic structural diagram of a solar continuous heating system device driven by air-water density difference according to the present invention;

[0021] Figure 2 This is a schematic structural diagram of a paraffin time-sharing energy storage tank device of a solar continuous heating system device driven by air-water density difference according to the present invention;

[0022] Figure 3 This is a schematic structural diagram of a hand-pressure aeration device for a solar continuous heating system device driven by air-water density difference according to the present invention;

[0023] Figure 4 This is a schematic structural diagram of a bubble generator of a solar continuous heating system device driven by air-water density difference according to the present invention;

[0024] Figure 5 This is a schematic structural diagram of a bubble separation device of a solar continuous heating system device driven by air-water density difference according to the present invention;

[0025] Among them: 1-manual ball valve, 2-check valve, 3-rising water pipe, 4-hand-pressure aeration device, 5-radiator, 6-paraffin time-sharing energy storage tank device, 7-solar water heater, 8-bubble generator, 9-high-pressure gas tank, 10-pressure gauge, 11-hand-pressure air pump, 12-gas flow meter, 13-one-way valve, 14-pressure reducing valve, 15-paraffin energy storage material, 16-diversion manifold, 17-fin 18-manifold heat exchange tube, 19-merging manifold, 20-box, 21-bubble separation device, 22-downflow pipe, 23-horizontal pipe, 24-gas collecting pipe, 25-water collecting pipe. DETAILED DESCRIPTION

[0026] The following will clearly and completely describe the technical solutions of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0029] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Specific implementation method 1: See Figure 1-Figure 5The present embodiment is described in detail. The solar continuous heating system device driven by the air-water density difference described in the present embodiment specifically includes a hand-pressure aeration device 4, a radiator 5, a paraffin time-sharing energy storage tank device 6, a solar water heater 7 and a bubble separation device 21. The water outlet of the solar water heater 7 is connected to the water inlet of the paraffin time-sharing energy storage tank device 6, and a check valve 2 is provided between the solar water heater 7 and the paraffin time-sharing energy storage tank device 6; the water outlet of the paraffin time-sharing energy storage tank device 6 is connected to the water inlet of the radiator 5 through a downpipe 22, and the water outlet of the radiator 5 is connected to the bubble separation device 21 through an uppipe 3, and the bubble separation device 21 is connected to the water inlet of the solar water heater 7; a hand-pressure aeration device 4 is provided at the bottom of the uppipe 3, and a check valve 2 and a bubble separation device 21 are provided at the top, and the bubble separation device 21 is higher than the solar water heater 7; the hand-pressure aeration device 4 injects bubbles into the pipe to provide power for the water circulation inside the device, and the bubbles are discharged from the device through the bubble separation device 21. The ascending water pipe 3 and the descending water pipe 22 are PET transparent plastic pipes.

[0031] The hand-pressure aeration device 4 includes a bubble generator 8, a high-pressure gas tank 9 and a hand-pressure air pump 11. The hand-pressure air pump 11, the high-pressure gas tank 9, the bubble generator 8 and the rising water pipe 3 are connected in sequence, and a one-way valve 13 is provided between the hand-pressure air pump 11 and the high-pressure gas tank 9. A pressurizing valve 14 and a gas flow meter 12 are provided in sequence between the high-pressure gas tank 9 and the bubble generator 8. A pressure gauge 10 is provided on the high-pressure gas tank 9. The bubble generator 8 is cylindrical and is connected to the gas outlet end of the high-pressure gas tank 9 through a thin tube. The thin tube extends into the rising water pipe 3 along a predetermined route, creating conditions for the subsequent generation of bubbles and driving circulation in the rising water pipe 3. In addition, in order to be able to better effectively manually control the on-off and flow of the gas, a manual air valve is installed on the thin tube. The operator manually operates the air valve to flexibly control the gas entering the return water pipe.

[0032] The bubble separator 21 comprises a horizontal tube 23, an air collecting pipe structure, and a water collecting pipe structure. One end of the horizontal tube 23 is connected to the rising water pipe 3, while the other end is sealed. The air collecting pipe structure is located above the horizontal tube 23, while the water collecting pipe structure is located below it. The water collecting pipe structure is connected to the solar water heater 7. A manual ball valve 1 is located at the top of the air collecting pipe structure. When air bubbles drive circulating water through the check valve 2 and into the bubble separator 21, the air rises into the air collecting pipe structure, while the circulating water descends into the water collecting pipe structure, achieving air-water separation.

[0033] The horizontal distance between the gas collecting pipe structure and the rising water pipe 3 is smaller than the horizontal distance between the water collecting pipe structure and the rising water pipe 3 .

[0034] like Figure 5As shown, the gas collecting pipe structure includes three gas collecting pipes 24, which are equidistantly arranged on the upper side of the horizontal pipe 23, and the upper ends of the three gas collecting pipes 24 are connected together; the water collecting pipe structure includes three water collecting pipes 25, which are equidistantly arranged on the lower side of the horizontal pipe 23, and the lower ends of the three water collecting pipes 25 are connected together; the gas collecting pipes 24 and the water collecting pipes 25 are staggered, as shown in FIG. Figure 5 shown.

[0035] The paraffin time-sharing energy storage tank device 6 includes a shunt header 16, several header-type heat exchange tubes 18, a junction box 19, and a housing 20. The shunt header 16, header-type heat exchange tubes 18, and junction box 19 are disposed within housing 20. The upper end of the shunt header 16 is connected to the solar water heater 7, and the lower end is connected to the junction box 19 via several header-type heat exchange tubes 18. The header-type heat exchange tubes 18 are evenly spaced. The header-type heat exchange tubes 18 are provided with several aluminum spiral fins 17, which wrap around the header-type heat exchange tubes 18. Paraffin energy storage material 15 is disposed within housing 20. When sufficient solar energy is available, the entire heating system operates normally. The paraffin time-sharing energy storage tank device 6 exchanges heat with the hot water, storing heat through the phase change of the paraffin energy storage material 15. At night or when solar energy cannot be effectively utilized, such as in cloudy or snowy weather conditions, the solar water heater 7 cannot work normally. The paraffin time-sharing energy storage tank device 6 releases the heat stored in the paraffin energy storage material 15 to heat the water in the heating pipe, thereby ensuring that the indoor heating state can be maintained continuously without interruption.

[0036] The specific working principle of the solar continuous heating system device based on gas-water density difference drive described in the present invention is:

[0037] When the heating system needs to be started, the manual air valve on the thin tube of the bubble generator 8 is closed when the high-pressure gas tank is pressurized by the hand-operated air pump 11. When the calibrated pressure is reached, the manual air valve is opened, and the gas in the high-pressure gas tank 9 will evenly enter the rising water pipe 3 through the bubble generator 8, forming a tiny bubble flow. The pressure in the rising water pipe 3 is thus reduced, thereby forming a tiny pressure difference, driving the cold water to flow back to the solar water heater 7, thereby realizing a heat exchange cycle between the radiator 5 and the solar water heater 7. To ensure that the low-temperature gas does not enter the solar water heater 7, the water in the rising water pipe 3 will pass through the bubble separation device 21 before reaching the solar water heater 7 to achieve gas-liquid separation using the density difference. The gas is collected and discharged through the gas collecting pipe 24 connected to the top of the horizontal pipe 23, while the water flows into the solar water heater 7 from the water collecting pipe 25 connected to the bottom of the horizontal pipe 23. The entire system is simple and labor-saving to operate, pressurization can last for a long time at one time, the device is safe and reliable during operation, and the circulation efficiency is sufficient to meet the needs, eliminating the purchase, operation and maintenance costs of the pump and greatly saving costs.

[0038] The paraffin time-sharing energy storage tank 6 is connected in series with the hot water pipes of the entire heating system. After the high-temperature water, heated by solar energy, flows out of the solar water heater 7, it enters the parallel header heat exchange tubes 18 through the water inlet and diversion manifold 16. There, the paraffin phase-change energy storage material 15 exchanges heat with the hot water, undergoing a phase change. At night, or when the remaining solar water heaters 7 are operating inefficiently, the paraffin phase-change energy storage material 15 acts as a heat source to heat the circulating water in the heating system, transforming from a liquid phase to a solid phase.

[0039] Here, we use No. 58 fully refined paraffin wax to calculate the mass and volume of paraffin phase change energy storage materials that can be used to achieve heating conditions per unit area. According to the national standard unit area heating heat index, 60W / m 2 To calculate, the heating area is 1m 2 , the calculated heating load is 60 kW, the latent heat of phase change of No. 58 paraffin is 234.72 kJ / kg, the initial temperature is 20°C, the phase change temperature is 58°C, the end temperature is 80°C, and the heating time is 8 hours. The required mass of energy storage material per unit area is:

[0040]

[0041] Where: Q h ——The amount of heat stored in the phase change material during the 8h heat storage process, kJ;

[0042] m h ——The mass of phase change material required to store energy per unit area for 8 hours, kg;

[0043] C L ——Specific heat capacity of the liquid phase of the phase change material, kJ / (kg·K);

[0044] C S ——Specific heat capacity of the solid phase of the phase change material, kJ / (kg·K);

[0045] λ——latent heat of phase change, kJ / kg.

[0046] According to the formula, the mass of the required energy storage material is 4.5 kg. The required heating area for one household is 40 m 2 To calculate, a total of 180kg of energy storage material is needed. Converted into a volume of 0.2m 3 Paraffin phase change energy storage material 15.

[0047] To summarize the above implementation cases, the solar continuous heating system device driven by the difference in density between gas and water, as described in the present invention, solves the problems of insufficient power of the existing natural circulation structure of solar heating, high energy consumption of mechanical circulation, and high cost. It adopts a manually driven pressurized air-blowing device, abandons the circulating water pump that traditional heating relies on, completely saves the purchase, operation and maintenance costs of the pump, greatly reduces the cost, and is particularly suitable for areas sensitive to heating costs, such as rural areas in the north. The solar continuous heating system device driven by the difference in density between gas and water, as described in the present invention, realizes an efficient heat exchange cycle between the radiator 5 and the solar water heater 7 by rationally designing the device structure, that is, using a hand-operated air pump 11, a high-pressure gas tank 9 and a bubble generator 8 to form a small pressure difference to drive the cold water backflow. At the same time, the bubble separation device 21 uses density differences to achieve gas-liquid separation, effectively avoiding the gas entering the solar water heater 7 to affect efficiency and the bubble accumulation to cause gas plugging, ensuring stable operation of the system. The solar continuous heating system device driven by the gas-water density difference described in the present invention uses a paraffin phase change energy storage material 15 with a high latent heat value to store a large amount of heat energy during the day when solar energy is sufficient, and releases heat at night or when solar energy is unavailable to maintain heating. This effectively solves the intermittent problem of solar heating, extends the heating time, and does not affect the indoor heating effect. The solar continuous heating system device driven by the gas-water density difference described in the present invention is simple and labor-saving to operate. It only requires pressurizing the high-pressure gas tank 9 with a hand-operated air pump 11. The pressurization can last for a long time at a time. The device operates safely and reliably, and the cycle efficiency meets the requirements. It has high practicality and promotion value.

[0048] The specific embodiments described above further illustrate the objectives, technical solutions, and beneficial effects of the present invention. It should be understood that the above description is merely a specific embodiment of the present invention and is not intended to limit the invention. Reasonable combinations of the features described in the above embodiments are also possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A solar continuous heating system device driven by air-water density difference, characterized by: The invention comprises a hand-pressure aeration device (4), a radiator (5), a paraffin time-sharing energy storage tank device (6), a solar water heater (7) and a bubble separation device (21); the water outlet of the solar water heater (7) is connected to the water inlet of the paraffin time-sharing energy storage tank device (6), the water outlet of the paraffin time-sharing energy storage tank device (6) is connected to the water inlet of the radiator (5), the water outlet of the radiator (5) is connected to the bubble separation device (21) through an ascending water pipe (3), and the bubble separation device (21) is connected to the water inlet of the solar water heater (7); a hand-pressure aeration device (4) is provided at the bottom of the ascending water pipe (3); the hand-pressure aeration device (4) injects bubbles into the pipe to provide power for water circulation inside the device, and the bubbles are discharged through the bubble separation device (21); The bubble separation device (21) comprises a horizontal pipe (23), an air collecting pipe structure and a water collecting pipe structure. One end of the horizontal pipe (23) is connected to the rising water pipe (3) and the other end is closed. The upper side of the horizontal pipe (23) is provided with an air collecting pipe structure, and the lower side is provided with a water collecting pipe structure. The water collecting pipe structure is connected to the solar water heater (7). The upper end of the air collecting pipe structure is provided with a manual ball valve (1). The horizontal distance between the gas collecting pipe structure and the rising water pipe (3) is smaller than the horizontal distance between the water collecting pipe structure and the rising water pipe (3); The gas collecting pipe structure comprises a plurality of gas collecting pipes (24), which are equidistantly arranged on the upper side of the horizontal pipe (23), and the upper ends of the gas collecting pipes (24) are merged and connected; the water collecting pipe structure comprises a plurality of water collecting pipes (25), which are equidistantly arranged on the lower side of the horizontal pipe (23), and the lower ends of the water collecting pipes (25) are merged and connected; the gas collecting pipes (24) and the water collecting pipes (25) are arranged in a staggered manner.

2. The solar continuous heating system device based on air-water density difference drive according to claim 1 is characterized in that: The hand-operated aeration device (4) comprises a bubble generator (8), a high-pressure gas tank (9) and a hand-operated air pump (11); the hand-operated air pump (11), the high-pressure gas tank (9), the bubble generator (8) and the rising water pipe (3) are sequentially connected; a one-way valve (13) is provided between the hand-operated air pump (11) and the high-pressure gas tank (9).

3. The solar continuous heating system device based on air-water density difference drive according to claim 2 is characterized in that: A pressurizing valve (14) and a gas flow meter (12) are sequentially arranged between the high-pressure gas tank (9) and the bubble generator (8).

4. The solar continuous heating system device based on air-water density difference drive according to claim 3 is characterized in that: The high-pressure gas tank (9) is provided with a pressure gauge (10).

5. The solar continuous heating system device based on air-water density difference drive according to claim 1 is characterized in that: The paraffin time-sharing energy storage tank device (6) comprises a shunt header (16), a plurality of header-type heat exchange tubes (18), a junction header (19) and a box body (20); the shunt header (16), the header-type heat exchange tubes (18) and the junction header (19) are arranged inside the box body (20); the upper end of the shunt header (16) is connected to the solar water heater (7), and the lower end is connected to the junction header (19) through the plurality of header-type heat exchange tubes (18); and the box body (20) is provided with a paraffin energy storage material (15).

6. The solar continuous heating system device based on air-water density difference drive according to claim 5 is characterized in that: A plurality of fins (17) are provided on the header-type heat exchange tube (18).

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