Solar continuous heating system device based on air-water density difference driving

Abstract

The invention discloses a solar continuous heating system device based on gas-water density difference driving, relates to the technical field of solar heating, and solves the problems that an existing solar heating natural circulation structure is insufficient in power, high in mechanical circulation energy consumption and high in cost. A water outlet of a solar water heater, a paraffin time-sharing energy storage tank device and a heating radiator are sequentially communicated, a water outlet of the heating radiator is communicated with a bubble separation device through an ascending water pipeline, and the bubble separation device is communicated with a water inlet of the solar water heater; a hand pressure type inflating and aerating device is arranged at the bottom of the ascending water pipeline; the hand-pressing type inflating and aerating device injects bubbles into the pipeline to provide power for water circulation in the device, and the bubbles are discharged through the bubble separating device. Circulation driving of water in the heating system is achieved through the gas-water density difference, cold water backflow is achieved, bubbles are discharged through the bubble separation device, the phenomenon that gas enters the solar water heater to affect efficiency and the phenomenon of air blocking caused by bubble accumulation are avoided, and stable operation of the system is guaranteed.

Description

Technical Field

[0001] The 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 system is prone to air blockage, which further increases energy consumption. At the same time, the intermittent nature of solar heating requires pumps to supplement power, which brings higher electricity bills to rural residents, especially those in underdeveloped areas in the north. In addition, the existing natural circulation structure is insufficiently powered, the mechanical circulation has high energy consumption and high maintenance costs, and is inconvenient to switch on and off, making it difficult to meet the actual heating needs in rural areas. Based on this, this team aims to develop a non-electrically driven mechanical circulation device to solve the above problems. Summary of the invention

[0003] In order to solve the above-mentioned problems of insufficient power, high mechanical cycle energy consumption and high cost of the existing solar heating natural circulation structure, the present invention proposes a solar continuous heating system device driven by gas-water density difference. The present invention uses the gas-water density difference to realize the circulation drive of water in the heating system and realize the cold water reflux. At the same time, the bubble separation device at the top of the device is used to discharge the bubbles in the device, so as to avoid gas entering the solar water heater to affect the efficiency and the accumulation of bubbles to cause gas plugging, thereby ensuring the stable operation of the system.

[0004] The present invention proposes a solar continuous heating system device driven by air-water density difference, 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 arranged 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 pipeline are connected in sequence, and a one-way valve is arranged between the hand-pressure air pump and the high-pressure gas tank.

[0006] Furthermore, a pressurizing valve and a gas flow meter are arranged in sequence 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 arranged on the upper side of the horizontal pipe, and a water collecting pipe structure is arranged on the lower side. The water collecting pipe structure is connected to the solar water heater. A manual ball valve is arranged on 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 a plurality of 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 a plurality of 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 manifold, a plurality of header-type heat exchange tubes, a junction manifold and a box body. The shunt manifold, the header-type heat exchange tubes and the junction manifold are arranged inside the box body. The upper end of the shunt manifold is connected to the solar water heater, and the lower end is connected to the junction manifold through a plurality of header-type heat exchange tubes; paraffin energy storage material is arranged in the box body.

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

[0013] The beneficial effects of the solar continuous heating system device based on air-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, and completely saves the purchase, operation and maintenance costs of the pump machine, greatly reducing the cost. It is especially suitable for areas such as northern rural areas that are sensitive to heating costs.

[0015] (2) The solar continuous heating system device based on the difference in gas-water density drive described in the present invention realizes efficient heat exchange cycle between radiator and solar water heater by rationally designing the device structure, i.e., using a hand-operated air pump, a high-pressure gas tank and a bubble generator to form a small pressure difference to drive cold water reflux. At the same time, the bubble separation device uses the density difference to achieve gas-liquid separation, effectively avoiding the gas from entering the solar water heater to affect the efficiency and the bubble accumulation to cause gas plugging, thus ensuring the 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 thermal 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 air-water density difference 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 cycle 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 picture:

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

[0021] Figure 2 It is a structural schematic 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 It is a structural schematic diagram of a hand-pressure aeration device of a solar continuous heating system device driven by air-water density difference according to the present invention;

[0023] Figure 4 It is a structural schematic 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 It is a structural schematic 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-check 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 technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part 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 creative work are 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", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to 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 arranged 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 descending water pipe 22, and 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 arranged at the bottom of the ascending water pipe 3, and a check valve 2 and a bubble separation device 21 are arranged 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 internal water circulation of 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 arranged 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 arranged in sequence between the high-pressure gas tank 9 and the bubble generator 8. A pressure gauge 10 is arranged on the high-pressure gas tank 9. The bubble generator 8 is columnar and connected to the gas outlet end of the high-pressure gas tank 9 through a capillary. The capillary 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 better control the on-off and flow of the gas effectively manually, a manual gas valve is installed on the capillary. The operator manually operates the gas valve to flexibly control the gas entering the return water pipe.

[0032] The bubble separation device 21 includes 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. After the bubble-driven circulating water enters the bubble separation device 21 through the check valve 2, the gas rises and enters the air collecting pipe structure, and the circulating water descends and enters the water collecting pipe structure, thereby achieving gas-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 arranged in a staggered manner, as shown in FIG. Figure 5 shown.

[0035] The paraffin time-sharing energy storage tank device 6 includes a shunt header 16, a plurality of header heat exchange tubes 18, a junction header 19 and a box body 20. The shunt header 16, the header 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 a plurality of header heat exchange tubes 18. The header heat exchange tubes 18 are arranged at equal intervals. The header heat exchange tubes 18 are provided with a plurality of fins 17, which are aluminum spiral fins, and the aluminum spiral fins wrap the header heat exchange tubes 18. The box body 20 is provided with paraffin energy storage material 15. When the solar energy is sufficient, the entire heating system operates normally, the paraffin time-sharing energy storage tank device 6 exchanges heat with hot water, and stores 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, snowy or other weather conditions, the solar water heater 7 cannot work normally, and 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 air-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 capillary 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 the heat exchange cycle between the radiator 5 and the solar water heater 7. In order 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 here by utilizing the density difference. The gas is collected and discharged through the gas collecting pipe 24 connected above the horizontal pipe 23, and the water flows into the solar water heater 7 from the water collecting pipe 25 connected below the horizontal pipe 23. The whole 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. The circulation efficiency is sufficient to meet the needs. It eliminates the cost of purchasing, operating and maintaining the pump, greatly saving costs.

[0038] The paraffin time-sharing energy storage tank device 6 is connected in series with the hot water pipe side of the entire heating system. When the high-temperature water flow heated by solar energy flows out of the solar water heater 7, it enters the parallel header heat exchange tube 18 through the water inlet and the diversion manifold 16, and the paraffin phase change energy storage material 15 exchanges heat with the hot water and produces a phase change. When night comes or when the remaining solar water heaters 7 are inefficient, the paraffin phase change energy storage material 15 is used as a heat source to heat the circulating water in the heating system and change from liquid phase to solid phase.

[0039] Here, we use No. 58 fully refined paraffin 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 of heating heat index per unit area, 60W / m 2 To calculate, heating area 1m 2 , the calculated heating load is 60kw, the latent heat of phase change of paraffin wax No. 58 is 234.72kJ / kg, the initial temperature is 20℃, the phase change temperature is 58℃, the end temperature is 80℃, and the heating time is 8h. 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 energy storage material required is 4.5kg. The heating area required for a household is 40m 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 air and water described in the present invention solves the problems of insufficient power, high energy consumption and high cost of the existing natural circulation structure of solar heating, and adopts a human-driven pressurized air-inflating device, abandons the circulating water pump that traditional heating relies on, and completely saves the purchase, operation and maintenance costs of the pump, greatly reducing the cost, and is particularly suitable for areas such as northern rural areas that are sensitive to heating costs. The solar continuous heating system device driven by the difference in density between air and water described in the present invention, through the reasonable design of the device structure, that is, using the hand-operated air pump 11, the high-pressure gas tank 9 and the bubble generator 8 to form a small pressure difference to drive the cold water backflow, realizes an efficient heat exchange cycle between the radiator 5 and the solar water heater 7. At the same time, the bubble separation device 21 uses the density difference to achieve gas-liquid separation, effectively avoiding the gas entering the solar water heater 7 to affect the efficiency and the bubble accumulation to produce gas plugging, ensuring the stable operation of the system. The solar continuous heating system device driven by the difference in density between gas and water described in the present invention adopts a paraffin phase change energy storage material 15 with a high latent heat value to store a large amount of heat energy when the solar energy is sufficient during the day, and releases heat at night or when the solar energy cannot be used to maintain heating, which effectively solves the intermittent problem of solar heating, prolongs the heating time, and does not affect the indoor heating effect. The solar continuous heating system device driven by the difference in density between gas and water described in the present invention is simple and labor-saving to operate. It only needs to pressurize 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 purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the invention. It can also be a reasonable combination of the features recorded in the above implementation methods. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A solar continuous heating system device driven by air-water density difference, characterized in that: 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 a rising water pipeline (3); the bubble separation device (21) is connected to the water inlet of the solar water heater (7); a hand-pressure aeration device (4) is arranged at the bottom of the rising water pipeline (3); the hand-pressure aeration device (4) injects bubbles into the pipeline to provide power for water circulation inside the device, and the bubbles are discharged through the bubble separation device (21).

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 pipeline (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 arranged in sequence 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 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).

6. The solar continuous heating system device based on air-water density difference drive according to claim 5 is characterized in that: 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).

7. The solar continuous heating system device based on air-water density difference drive according to claim 6 is characterized in that: 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 plurality of gas collecting pipes (24) are joined 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 plurality of water collecting pipes (25) are joined and connected.

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

9. The solar continuous heating system device based on air-water density difference drive according to claim 8 is characterized in that: The header-type heat exchange tube (18) is provided with a plurality of fins (17).

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