A solar heating system

Abstract

The utility model provides a kind of solar heating system, it is related to solar energy utilization technical field.The system includes heat storage water tank, flat plate solar water heating panel and circulation pipeline, heat storage water tank is located in indoor, and it is communicated with the heating equipment in indoor, several flat plate solar water heating panels are communicated with heat storage water tank respectively, circulation pipeline is communicated between several flat plate solar water heating panels, heat storage water tank and heating equipment, still include light collecting and heat storing heat preservation tank installation in outdoor, and higher than heat storage water tank, several flat plate solar water heating panels are installed in light collecting and heat storing heat preservation tank in parallel;Lighting layer is sealed and covers the opening at the sunny side of light collecting and heat storing heat preservation tank, and it is correspondingly set with the front of several flat plate solar water heating panels, relatively closed environment is formed between lighting layer and light collecting and heat storing heat preservation tank. Overall, the present application can play good heat preservation effect, provide continuous heating, and outdoor equipment pipe freezing can also be avoided.

Description

Technical Field

[0001] This utility model relates to the field of solar energy utilization technology, and in particular to a solar heating system. Background Technology

[0002] Existing solar heating systems use solar glass vacuum tube collectors and flat-plate solar water heaters for heat collection, supplemented by hot water storage tanks for heat storage, and operate through a hot water circulation heating system. However, the maintenance rate of vacuum tube collectors remains high, while flat-plate solar water heaters cannot solve the problem of heat preservation and antifreeze for outdoor solar water heaters, thus failing to achieve large-area heat collection and heating.

[0003] Therefore, there is an urgent need for a solar heating system that is frost-resistant, structurally stable, and provides continuous heating. Utility Model Content

[0004] The purpose of this utility model is to provide a solar heating system that solves the technical problems of easy freezing of pipes and inability to provide heating over large areas in existing technologies. The various technical effects of the preferred technical solutions provided by this utility model are detailed below.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] This utility model provides a solar heating system, including a hot water storage tank, flat-plate solar water collectors, and a circulation pipeline. The hot water storage tank is located indoors and connected to indoor heating equipment. Several flat-plate solar water collectors are respectively connected to the hot water storage tank. The circulation pipeline connects the several flat-plate solar water collectors, the hot water storage tank, and the heating equipment. The system also includes:

[0007] A solar collector and heat preservation box is installed outdoors and is higher than the hot water storage tank. Several flat-plate solar water collectors are installed in parallel inside the solar collector and heat preservation box.

[0008] A light-transmitting layer is sealed and covers the opening on the sun-facing side of the light-transmitting and heat-collecting insulation box, and is arranged corresponding to the front of several flat-plate solar water heating panels, forming a relatively closed environment between the light-transmitting layer and the light-transmitting and heat-collecting insulation box.

[0009] Preferred options also include:

[0010] Membrane supports, a plurality of the membrane supports are installed at the opening on the sun-facing side of the solar collector and heat preservation box, and are located inside the solar collector layer and span across the front of the flat-plate solar water collector.

[0011] Preferred options also include:

[0012] Decorative housing, which is installed indoors, and hot water storage tank, which is installed inside the decorative housing;

[0013] A fan is installed on the side wall or top of the hot water storage tank. An air inlet is provided at the bottom of the side wall of the decorative housing, and an air outlet is provided on the front and top of the decorative housing.

[0014] Preferred options also include:

[0015] An electric heater is installed at the air inlet of the fan, and the electric heater and the fan together form the warm air blower. The warm air blower is installed on the side wall or top of the hot water storage tank and is located inside the decorative housing. The air inlet of the warm air blower is connected to the air inlet.

[0016] The three ventilation ducts are located inside the decorative housing. The inlet of the three ventilation ducts is connected to the air outlet of the heater. The two sets of outlets of the three ventilation ducts respectively pass through the decorative housing and form the air outlet.

[0017] Preferably, the circulation pipeline includes:

[0018] The water supply pipe is connected between the lower end of the plurality of flat-plate solar water collectors and the bottom of the hot water storage tank, and the water return pipe is connected between the upper end of the plurality of flat-plate solar water collectors and the top of the hot water storage tank.

[0019] An outdoor circulation pump is installed at the bottom of the hot water storage tank and is connected between the water supply pipe and the bottom of the hot water storage tank.

[0020] Preferably, the circulation pipeline further includes:

[0021] An outdoor circulating return water pipe is connected between the top of the hot water storage tank and the return water pipe.

[0022] Preferably, the circulation pipeline further includes:

[0023] A vent valve is installed at the high end of the return water pipe.

[0024] Preferably, the circulation pipeline includes:

[0025] An indoor circulation pump is connected between the middle of the hot water storage tank and the inlet of the heating equipment.

[0026] An indoor circulating return water pipe is connected between the bottom of the hot water storage tank and the outlet of the heating equipment.

[0027] The technical solution provided by this utility model adopts a flat-plate solar water collector, which can effectively improve its service life. The solar collector insulation box provides good insulation for the flat-plate solar water collector in winter. Simultaneously, the solar collector insulation box and the flat-plate solar water collector installed within it are higher than the hot water storage tank. When the water temperature inside the flat-plate solar water collector falls below the set temperature range, the water inside the flat-plate solar water collector flows back to the hot water storage tank under gravity through the circulation pipe. This design effectively avoids pipe freezing. The circulation pipe can also actively circulate the water in the hot water storage tank to… Within the flat-plate solar water heater, water is continuously heated and circulated to a storage tank. The storage tank is connected to heating equipment via a circulation pipeline, which then transports the hot water from the storage tank to the heating equipment. This circulation system ensures continuous heating, making it suitable for large-area heating. The light-transmitting layer effectively protects the flat-plate solar water heater within the heat-collecting and insulation box, preventing dust or foreign matter from affecting its heat conversion while ensuring good light transmission. Overall, this application provides excellent insulation, heat collection, and heating effects, offering continuous heating and preventing outdoor equipment pipes from freezing. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the arrangement of several flat-plate solar water collectors.

[0030] Figure 2 This is a cross-sectional schematic diagram of a practical light-collecting and heat-insulating box and a flat-plate solar water heater.

[0031] Figure 3 yes Figure 2 A magnified view of part A in the diagram;

[0032] Figure 4 This is a schematic cross-sectional view of the main view of this practical decorative casing;

[0033] Figure 5 This is a schematic cross-sectional view of the left side of the decorative casing of this utility model.

[0034] In the diagram: 1. Solar collector and insulation box; 2. Flat-plate solar water heater; 3. Return water pipe; 4. Air vent valve; 5. Water supply pipe; 6. Membrane support; 7. Water supply insulation pipe; 8. Return water insulation pipe; 9. Skylight layer; 10. Flexible hose; 11. Snap ring; 12. Slot; 13. Decorative casing; 14. Hot water storage tank; 15. Inspection port; 16. Three-way ventilation duct; 17. Outdoor circulating return water pipe; 18. Warm air blower; 19. Indoor circulating pump; 20. Outdoor circulating pump; 21. Indoor circulating return water pipe; 22. Air inlet; 23. Base. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0036] refer to Figure 1-5 A specific embodiment of this utility model provides a solar heating system, including a hot water storage tank 14, flat-plate solar water collectors 2, and a circulation pipeline. The hot water storage tank 14 is located indoors and connected to indoor heating equipment. Several flat-plate solar water collectors 2 are respectively connected to the hot water storage tank 14. The circulation pipeline connects the several flat-plate solar water collectors 2, the hot water storage tank 14, and the heating equipment. The system also includes:

[0037] A solar collector and heat preservation box 1 is installed outdoors and is higher than the hot water storage tank 14. Several flat-plate solar water collection panels 2 are installed in parallel inside the solar collector and heat preservation box 1.

[0038] The light-transmitting layer 9 is sealed and covers the opening on the sunny side of the light-transmitting and heat-collecting insulation box 1, and is set in relation to the front of several flat-plate solar water heating panels 2, forming a relatively closed environment between the light-transmitting layer 9 and the light-transmitting and heat-collecting insulation box 1.

[0039] Existing solar heating systems utilize solar vacuum tube collectors and flat-plate solar water heaters, supplemented by hot water storage tanks, operating through a circulating hot water heating system. However, vacuum tube collectors suffer from high maintenance rates, while flat-plate solar water heaters, due to the inability to solve the insulation and antifreeze problems of outdoor solar water heaters, cannot achieve large-area heat collection and supply. This application employs a flat-plate solar water heater panel 2, which effectively extends its service life. Through the relatively enclosed environment formed between the light-collecting and heat-insulating box 1 and the light-collecting layer 9, a relatively enclosed high-temperature environment is created during normal use of the flat-plate solar water heater panel 2, which can effectively protect the panel from heat during winter. This design provides excellent heat retention. Furthermore, the solar collector and heat preservation box 1, along with the flat-plate solar water heater 2 installed within it, are higher than the hot water storage tank 14. When the temperature inside the solar collector and heat preservation box 1 drops to a set value, the water in the flat-plate solar water heater 2 flows back to the hot water storage tank 14 through the circulation pipes under gravity. This effectively prevents the pipes from freezing. The circulation pipes can also actively circulate water from the hot water storage tank 14 to the flat-plate solar water heater 2, where it is continuously heated. In the hot water storage tank 14, the hot water storage tank 14 is connected to the heating equipment through a circulation pipeline. The circulation pipeline transports the hot water in the hot water storage tank 14 to the heating equipment, circulating the hot water in the flat-plate solar water collector 2 with the water in the heating equipment to achieve the purpose of heating and continuous heating, which is suitable for large-area heating. Through the light-transmitting layer 9, while ensuring good light transmission, it can effectively protect the flat-plate solar water collector 2 in the light-transmitting heat collection and insulation box 1, preventing dust or foreign objects from adhering and affecting the heat conversion of the flat-plate solar water collector 2. Overall, the structure of this application is stable, can achieve good heat preservation, heat collection and heating effects, can provide continuous heating, and can also prevent the outdoor equipment pipes from freezing.

[0040] This application applies to rural bungalows; the flat-plate solar water collector 2 of this application adopts a solar flat-plate heat collection device as disclosed in patent (CN115654754A). The hot water storage tank 14 is made of stainless steel. The heating equipment is a common radiator or underfloor heating pipe system. Temperature sensors are installed inside the flat-plate solar water collector 2 and the hot water storage tank 14 to monitor the water temperature. The light-transmitting layer 9 and the light-transmitting heat collection and insulation box 1 are relatively enclosed, and a sealing ring (not shown in the figure) is provided at the joint between the light-transmitting layer 9 and the light-transmitting heat collection and insulation box 1.

[0041] Further optimizations to the plan include:

[0042] Membrane support 6, several membrane supports 6 are installed at the opening on the sun-facing side of the light-collecting and heat-insulating box 1, and are located inside the light-collecting layer 9, spanning across the front of the flat-plate solar water collector 2.

[0043] The main function of the membrane support 6 is to support the light-transmitting layer 9 and prevent it from denting or deforming under external forces or extreme weather. The front of the flat-plate solar water collector panel 2 is the light-transmitting surface.

[0044] Further optimizations to the plan include:

[0045] Decorative housing 13, which is installed indoors, and hot water storage tank 14 is installed inside decorative housing 13;

[0046] A fan (not shown in the figure) is installed on the side wall or top of the hot water storage tank 14. An air inlet 22 is provided at the bottom of the side wall of the decorative housing 13, and an air outlet is provided on the front and top of the decorative housing 13.

[0047] Existing indoor heating equipment uses only a water circulation heating method. In this application, there is a gap (distance) between the hot water storage tank 14 and the decorative shell 13. After the air absorbs the radiant heat from the surface of the hot water storage tank 14, the hot airflow moves from bottom to top. The hot airflow is blown out of the air outlet on the decorative shell 13 by a fan and blown into the room to achieve the purpose of warm air heating. It can also be delivered to other rooms through air ducts. Among them, the air inlet 22, the inner cavity of the decorative shell 13, the fan, the air outlet and the room form an air circulation. The bottom of the hot water storage tank 14 is provided with a base 23. The hot water storage tank 14 is placed or installed on the indoor floor through the base 23. The base 23 can be a support column structure, which is installed at the four corners of the bottom of the hot water storage tank 14. The base 23 can also be a hollow structure, so that air can circulate inside and outside the base 23. Air enters the decorative shell 13 through the air inlet 22, can pass through the base 23, and flows upward after being heated. The bottom of the decorative shell 13 is not provided with a bottom plate.

[0048] Further optimizations to the plan include:

[0049] An electric heater is installed at the air inlet of a fan. The electric heater and the fan together form a warm air blower 18. The warm air blower 18 is installed on the side wall or top of the hot water storage tank 14 and is located inside the decorative housing (13). The air inlet of the warm air blower 18 is connected to the air inlet 22.

[0050] The three ventilation ducts 16 are located inside the decorative housing 13. The inlet of the three ventilation ducts 16 is connected to the air outlet of the heater 18. The two sets of outlets of the three ventilation ducts 16 pass through the decorative housing 13 and form air outlets.

[0051] In the event of consecutive cloudy days, existing heating systems require heating the entire tank of water to provide normal heating, resulting in high energy consumption and a long heating time, making rapid heating impossible. In this application, when the water temperature in the hot water storage tank 14 is lower than the set temperature range, the heater 18 is activated. Indoor air enters the decorative housing 13 through the air inlet 22, is heated by the heater 18, and then discharged into the room through the three ventilation pipes 16 and the air outlet, thereby achieving rapid heating.

[0052] Further optimization of the scheme, the circulation pipeline includes:

[0053] The water inlet pipe 5 and the water return pipe 3 are connected. The water inlet pipe 5 is connected between the lower end of several flat-plate solar water collectors 2 and the bottom of the hot water storage tank 14. The water return pipe 3 is connected between the upper end of several flat-plate solar water collectors 2 and the top of the hot water storage tank 14.

[0054] Outdoor circulation pump 20 is installed at the bottom of hot water storage tank 14 and is connected between water supply pipe 5 and the bottom of hot water storage tank 14.

[0055] The vent valve is installed at the high end of the return water pipe 3;

[0056] The water supply insulation pipe 7 and the return water insulation pipe 8 are installed on the outer wall or top of the decorative shell 13 and are connected between the inlet of the water supply pipe 5 and the outdoor circulation pump 20. The return water insulation pipe 8 is installed on the outer wall or top of the decorative shell 13 and is connected between the outlet of the return water pipe 3 and the top of the hot water storage tank 14.

[0057] The hose 10 connects several flat-plate solar water collectors 2 to the water inlet pipe 5 and the water return pipe 3 respectively.

[0058] The inlet water pipe 5 and the return water pipe 3 are respectively installed inside the solar collector insulation box 1. The solar collector insulation box 1 provides insulation, which reduces heat loss to a certain extent. The inlet water insulation pipe 7 and the return water insulation pipe 8 are installed on the outer wall of the decorative shell 13, which can effectively reduce heat loss during water circulation. A temperature sensor is installed inside the solar collector insulation box 1. In sunny weather, when the surface temperature reaches a specified range, the outdoor circulation pump 20 is started. The water in the hot water storage tank 14 is then transported through the inlet water insulation pipe 7, the inlet water pipe 5, and the hose 10 to the flat-plate solar collector. Water plate 2, with a temperature sensor monitoring the internal temperature of the solar collector and insulation box 1, absorbs solar energy and then sends the heated water sequentially through hose 10, return water pipe 3, and return water insulation pipe 8 to the hot water storage tank 14. During the continuous circulation and heating process, the water temperature in the hot water storage tank 14 continuously rises. When the temperature inside the solar collector and insulation box 1 drops to a specified value, the outdoor circulation pump 20 stops, and the water in the inlet insulation pipe 7, return water insulation pipe 8, several flat-plate solar collectors 2, inlet pipe 5, and return water pipe 3 flows back to the hot water storage tank 14 by gravity. In this application, the inlet and outlet of several flat-plate solar collectors 2 can be as described above, with the inlet (corresponding to the outlet of the inlet pipe 5) located at the lower end and the outlet (corresponding to the inlet of the return water pipe 3) located at the higher end; alternatively, the inlet and outlet can be located on the same side of the flat-plate solar collectors 2.

[0059] The vent valve includes an air vent valve 4, whose main function is to vent air from the pipes. A common automatic air vent valve used in heating pipes can be used. The vent valve also includes a solenoid valve (normally closed) integrated into the air vent valve 4. When the temperature inside the solar collector insulation box 1 drops to a specified value, the solenoid valve (not shown in the diagram) opens, allowing water from the several flat-plate solar water collectors 2 and the pipes to flow back to the hot water storage tank 14, ensuring pressure balance throughout the pipes and smooth return flow. The volume of the hot water storage tank 14 is larger than the total water volume during the heating process (outdoor circulating water).

[0060] Further optimization of the scheme includes the following for the circulation pipeline:

[0061] Outdoor circulating return water pipe 17 connects the top of the hot water storage tank 14 to the return water pipe 3.

[0062] Further optimization of the scheme, the circulation pipeline includes:

[0063] Indoor circulation pump 19 is connected between the middle of hot water storage tank 14 and the inlet of heating equipment;

[0064] The indoor circulating return water pipe 21 is connected between the bottom of the hot water storage tank 14 and the outlet of the heating equipment.

[0065] When the temperature in the hot water storage tank 14 reaches the specified range, the indoor circulation pump 19 is started to deliver hot water to the heating equipment for indoor heating. The return water in the heating equipment flows back to the hot water storage tank 14 through the indoor circulation return water pipe 21.

[0066] Further optimizations to the plan include:

[0067] Inspection port 15 is located on the top wall of the hot water storage tank 14 and inside the decorative shell 13.

[0068] When using the hot water storage tank 14, water is added to the hot water storage tank 14 through the inspection port 15, or the internal condition of the hot water storage tank 14 is inspected. Before opening the inspection port 15, the decorative shell 13 needs to be opened.

[0069] Preferred options also include:

[0070] Card slot 12: Several card slots 12 are provided on the side of the light-collecting and heat-insulating box 1;

[0071] A number of retaining rings 11 are installed on the edge of the light-transmitting layer 9, and the retaining rings 11 are correspondingly locked in the slots 12.

[0072] The snap ring 11 has a thin sheet structure, such as Figure 3 As shown, it is stuck in the card slot 12.

[0073] Preferably, the light-transmitting layer is a light-transmitting film or a light-transmitting panel. If a light-transmitting panel is used, the perimeter is sealed with pressure strips, and the retaining groove 12 and retaining spring 11 are not required.

[0074] Preferably, a control panel (not shown in the figure) is installed on the outer wall of the decorative housing 13. The control panel is electrically connected to the outdoor circulation pump 20, the indoor circulation pump 19, the temperature sensor, the fan, the electric heater, and the solenoid valve, and is powered by the household power supply line respectively. The control panel controls the start and stop time of the above-mentioned electrical components, as well as the air volume, the hot air temperature, and the opening and closing timing of the solenoid valve.

[0075] Preferably, the air outlet is equipped with a louvered structure.

[0076] It should be noted that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., used herein to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the equipment or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0077] In this description, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. 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. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0078] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A solar heating system, comprising a hot water storage tank (14), flat-plate solar water collectors (2), and a circulation pipeline, wherein the hot water storage tank (14) is located indoors and connected to indoor heating equipment, a plurality of flat-plate solar water collectors (2) are respectively connected to the hot water storage tank (14), and the circulation pipeline connects the plurality of flat-plate solar water collectors (2), the hot water storage tank (14), and the heating equipment, characterized in that, Also includes: A solar collector and heat preservation box (1) is installed outdoors and is higher than the hot water storage tank (14). Several flat-plate solar water collection panels (2) are installed in parallel inside the solar collector and heat preservation box (1). The light-transmitting layer (9) is sealed and covers the opening on the sunny side of the light-transmitting heat collection and insulation box (1), and is arranged corresponding to the front of several flat-plate solar water collection panels (2). The light-transmitting layer (9) and the light-transmitting heat collection and insulation box (1) form a relatively closed environment.

2. The solar heating system according to claim 1, characterized in that, Also includes: Membrane supports (6), a plurality of the membrane supports (6) are installed at the opening on the sun-facing side of the light-collecting and heat-insulating box (1), and are located inside the light-collecting layer (9) and span across the front of the flat-plate solar water heater (2).

3. The solar heating system according to claim 1, characterized in that, Also includes: Decorative housing (13), the decorative housing (13) is installed indoors, and the hot water storage tank (14) is installed inside the decorative housing (13); A fan is installed on the side wall or top of the hot water storage tank (14). An air inlet (22) is provided at the bottom of the decorative housing (13), and an air outlet is provided on the front and top of the decorative housing (13).

4. The solar heating system according to claim 3, characterized in that, Also includes: An electric heater is installed at the air inlet of the fan, and the electric heater and the fan form a warm air blower (18). The warm air blower (18) is installed on the side wall or top of the hot water storage tank (14) and is located inside the decorative housing (13). The air inlet of the warm air blower (18) is connected to the air inlet (22). Three ventilation ducts (16) are located inside the decorative housing (13). The inlet of the three ventilation ducts (16) is connected to the air outlet of the heater (18). The two sets of outlets of the three ventilation ducts (16) pass through the decorative housing (13) respectively and form the air outlet.

5. The solar heating system according to claim 1, characterized in that, The circulation pipeline includes: The water supply pipe (5) and the return water pipe (3) are connected between the lower end of the plurality of flat-plate solar water collectors (2) and the bottom of the hot water storage tank (14), and the return water pipe (3) is connected between the upper end of the plurality of flat-plate solar water collectors (2) and the top of the hot water storage tank (14). An outdoor circulation pump (20) is installed at the bottom of the hot water storage tank (14) and is connected between the water supply pipe (5) and the bottom of the hot water storage tank (14).

6. The solar heating system according to claim 5, characterized in that, The circulation pipeline also includes: An outdoor circulating return water pipe (17) is connected between the top of the hot water storage tank (14) and the return water pipe (3).

7. The solar heating system according to claim 5, characterized in that, The circulation pipeline also includes: A vent valve is installed at the high end of the return water pipe (3).

8. The solar heating system according to claim 1, characterized in that, The circulation pipeline includes: An indoor circulation pump (19) is connected between the middle of the hot water storage tank (14) and the inlet of the heating equipment; An indoor circulating return water pipe (21) is connected between the bottom of the hot water storage tank (14) and the outlet of the heating equipment.

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