Solar photo-thermal building roof structure

Abstract

The utility model relates to the technical field of solar energy utilization, in particular to a solar photo-thermal building roof structure which comprises a plurality of solar photo-thermal assemblies installed on a roof, each solar photo-thermal assembly comprises a strip-shaped base, and a first U-shaped support and a second U-shaped support are arranged at the left end and the right end of each strip-shaped base respectively. A first L-shaped supporting plate is arranged at the top of the first U-shaped support, a second L-shaped supporting plate is arranged at the top of the second U-shaped support, and the first L-shaped supporting plate and the second L-shaped supporting plate jointly support a flat plate type solar heat collector. According to the solar photo-thermal building roof structure, when a flat plate type solar heat collector is installed, the flat plate type solar heat collector is placed on a first L-shaped supporting plate and a second L-shaped supporting plate, and then a first pressing bolt and a second pressing bolt are screwed up, so that the flat plate type solar heat collector is positioned between the first L-shaped supporting plate and the second L-shaped supporting plate; and the flat plate type solar heat collector is convenient to disassemble and assemble by workers.

Description

Technical Field

[0001] The utility model relates to the technical field of solar energy utilization, in particular to a solar thermal building roof structure. Background Art

[0002] Solar energy is a clean, renewable energy source. Harnessing solar energy can reduce dependence on fossil fuels, lower greenhouse gas emissions, and protect the environment. Currently, there are two main ways to utilize solar energy: photovoltaic power generation and solar thermal energy. Photovoltaic power generation converts solar energy into electricity, while solar thermal energy converts solar energy into heat. Applications of solar thermal energy include solar water heaters, solar air conditioners, and solar drying. The advantage of solar thermal energy is that it directly utilizes the heat from the sun, eliminating the need for complex conversion processes. This results in higher efficiency and lower costs.

[0003] The patent with publication number CN219264595U discloses an energy storage type photovoltaic thermal roof, including a roof panel, an insulated water tank, a thermal panel, a photovoltaic panel, a first circulation pump, a second circulation pump, a battery, an electric water heater and a phase change energy storage device; the liquid inlet of the first circulation pump is connected to the inner cavity of the thermal tank, the liquid outlet of the first circulation pump is connected to the liquid inlet of the thermal panel, the liquid inlet of the phase change energy storage device is respectively connected to the liquid outlet of the thermal panel and the liquid outlet of the electric water heater, and the liquid outlet of the phase change energy storage device is connected to the inner cavity of the thermal tank; the liquid inlet of the electric water heater is connected to the liquid outlet of the second circulation pump, and the liquid inlet of the second circulation pump is connected to the inner cavity of the thermal tank; the electrodes of the battery are electrically connected to the output end of the photovoltaic panel; the utility model utilizes the energy storage device and the photovoltaic thermal panel to form a new type of roof, fully utilizing the photovoltaic thermal energy of the limited roof area to fully meet the building energy needs and not occupy ground space and develop the utilization space of the building roof.

[0004] Although the above-mentioned existing technology uses a storage device combined with photovoltaic thermal panels to form a new type of roof, making full use of the limited roof area of ​​photovoltaic thermal energy, the insulation water tank is set on the roof base board, and a water-smoothing strip layer, a waterproof and permeable membrane layer, and an anti-corrosion wood tile strip layer are set between the insulation water tank and the thermal panel, which inevitably increases the overall thickness of the roof. Moreover, the installation position of the insulation water tank is not conducive to later maintenance and repair. When the insulation water tank is filled with water, it has a great weight, which will cause great pressure on the roof. The overall load-bearing capacity of the roof also needs to be considered, which increases the difficulty of construction. The thermal panel is fixedly laid on the top of the anti-corrosion wood tile strip layer, which is not convenient for construction workers to quickly disassemble and install the thermal panel. In view of this, we propose a solar thermal building roof structure. Utility Model Content

[0005] The purpose of the utility model is to provide a solar thermal building roof structure to solve the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A solar thermal building roof structure, comprising a plurality of solar thermal components mounted on the roof and a hot water storage tank, a hot water supply tank and a heating pipe installed indoors, wherein the solar thermal component comprises a strip base fixedly mounted on the roof, a first U-shaped bracket is provided at the left end of the strip base, a first L-shaped support plate is provided on the top of the first U-shaped bracket, a second U-shaped bracket is provided on the right end of the strip base, a second L-shaped support plate is provided on the top of the second U-shaped bracket, the first L-shaped support plate and the second L-shaped support plate jointly support a flat-plate solar collector, and two adjacent solar thermal collectors are connected. The flat-plate solar collectors in the solar thermal assembly are connected via a connecting pipe. The height of the first U-shaped bracket is less than that of the second U-shaped bracket, so that the flat-plate solar collector is arranged at an angle, which is conducive to the flat-plate solar collector absorbing the radiant energy of sunlight. The first L-shaped support plate and the second L-shaped support plate can support the flat-plate solar collector. When installing the flat-plate solar collector, the flat-plate solar collector is placed on the first L-shaped support plate and the second L-shaped support plate. The connecting pipe guides water from the previous flat-plate solar collector into the next flat-plate solar collector.

[0008] The front side of the hot water storage tank and near the top are provided with a first return pipe and a water supply pipe, the water supply pipe is connected to the tap water pipe, when the water in the hot water storage tank is low, water is supplied to the hot water storage tank, which can be achieved through components such as water level sensors and solenoid valves. This is an existing mature technology and will not be described in detail here. The first return pipe is connected to the output end of the flat-plate solar collector in the last solar thermal component through the return pipe, and the bottom of the rear side of the hot water storage tank is provided with a first water outlet pipe, a second water outlet pipe and a third water outlet pipe. The first water outlet pipe, the second water outlet pipe and the third water outlet pipe are connected. The water outlet pipes are all provided with valves so that the staff can control the switches of the first water outlet pipe, the second water outlet pipe and the third water outlet pipe respectively, which is convenient for use. The output end of the first water outlet pipe is connected to the first pump body, and the output end of the first pump body is connected to the input end of the flat-plate solar collector in the first solar thermal assembly through the first water supply pipe. The first pump body transports the water in the hot water storage tank to the flat-plate solar collectors in the multiple solar thermal assemblies, and the flowing water is heated by the flat-plate solar collectors, so that the water in the hot water storage tank can be heated;

[0009] The output end of the second water outlet pipe is connected to a second pump body, and the output end of the second pump body is communicated with the input end of the heating pipe. A second return pipe is provided on the top of the hot water storage tank, and the output end of the heating pipe is communicated with the second return pipe. When it is necessary to heat the room, the control valve on the second water outlet pipe can be opened, and the second pump body can be started to operate, so that the hot water in the hot water storage tank enters the heating pipe, and the heating pipe exchanges heat with the indoor air, thereby heating the room. The water after heat exchange can flow back to the hot water storage tank and be heated;

[0010] The output end of the third water outlet pipe is connected to a third pump body, and the output end of the third pump body is communicated with the hot water tank through a second water supply pipe. A water output pipe with a valve is provided at the bottom of the hot water tank. The third pump body delivers hot water to the hot water tank. When hot water is needed, the valve of the water output pipe can be opened to output the hot water in the hot water tank.

[0011] Preferably, a plurality of mounting holes are provided at the top of the strip base, the bottom of the inner wall of the first U-shaped bracket and the bottom of the inner wall of the second U-shaped bracket. The strip base, the first U-shaped bracket and the second U-shaped bracket are detachably connected to the roof by bolts. Anchor bolts can be used, the anchor bolts are preset on the roof, and then the strip base, the first U-shaped bracket and the second U-shaped bracket are fixed to the roof. There is no need to disassemble the strip base, the first U-shaped bracket and the second U-shaped bracket when repairing or maintaining the flat-plate solar collector.

[0012] Preferably, two strip support plates are provided between the first L-shaped support plate and the second L-shaped support plate, and the upper surfaces of the strip support plates are in contact with the lower surface of the flat-plate solar collector to provide auxiliary support for the flat-plate solar collector.

[0013] Preferably, both front and rear ends of the first L-shaped support plate are provided with positioning side plates, and the opposite sides of the two positioning side plates are respectively fitted with the left ends of the front and rear sides of the flat-plate solar collector, thereby positioning the left end of the flat-plate solar collector.

[0014] Preferably, the first L-shaped support plate and the second L-shaped support plate are respectively threadedly connected with a first clamping bolt and a second clamping bolt on the opposite sides and in the middle, and positioning slots are provided on the left and right sides and in the middle of the aluminum alloy outer frame of the flat-plate solar collector, and the threaded ends of the first clamping bolt and the second clamping bolt are respectively inserted into the two positioning slots, and the flat-plate solar collector is positioned between the first L-shaped support plate and the second L-shaped support plate by the first clamping bolt and the second clamping bolt, thereby fixing the position of the flat-plate solar collector and facilitating the disassembly and assembly of the flat-plate solar collector by the staff.

[0015] Preferably, the hot water supply tank is installed near the roof, and the capacity of the hot water supply tank is one fifth of the capacity of the hot water storage tank, ensuring that the hot water in the hot water storage tank can be supplied in sufficient quantity.

[0016] Preferably, both the hot water supply tank and the hot water storage tank are provided with electric heating rods, and a controller is provided on the front side of the hot water storage tank for controlling the heating temperature of the hot water in the hot water supply tank and the hot water storage tank respectively, so as to avoid the water in the hot water supply tank being too hot during heating, and also to avoid the water in the hot water storage tank being too hot during use.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The solar thermal building roof structure, the strip base, the first U-shaped bracket and the second U-shaped bracket can be fixed to the roof with anchor bolts. When repairing or maintaining the flat-plate solar collector, there is no need to disassemble the strip base, the first U-shaped bracket and the second U-shaped bracket. When installing the flat-plate solar collector, the flat-plate solar collector is placed on the first L-shaped support plate and the second L-shaped support plate, and then the first clamping bolt and the second clamping bolt are tightened so that the threaded ends of the first clamping bolt and the second clamping bolt are respectively inserted into the two positioning slots, so that the flat-plate solar collector is positioned between the first L-shaped support plate and the second L-shaped support plate, which is convenient for staff to disassemble and assemble the flat-plate solar collector.

[0019] 2. The solar thermal building roof structure transports the water in the heat storage tank to the flat-plate solar collectors in the multiple solar thermal components through the first pump body, and heats the flowing water through the flat-plate solar collectors, so that the water in the heat storage tank can be heated.

[0020] 3. When the solar thermal building roof structure needs to provide indoor heating, the control valve on the second water outlet pipe can be opened, and the second pump body can be started to allow the hot water in the heat storage tank to enter the heating pipe. The heating pipe exchanges heat with the indoor air, thereby heating the room. The water after heat exchange can flow back to the heat storage tank and be heated.

[0021] 4. The solar thermal building roof structure transmits hot water to the hot water tank. When hot water is needed, the valve of the water output pipe can be opened to output the hot water in the hot water tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the solar thermal component structure in the present utility model;

[0024] Figure 3 This is a partial structural diagram of the solar thermal component in the present utility model;

[0025] Figure 4 This is a schematic structural diagram of a flat-plate solar collector in the present utility model;

[0026] Figure 5 This is one of the partial structural diagrams of the utility model;

[0027] Figure 6 This is the second schematic diagram of the partial structure of the utility model;

[0028] Figure 7 It is a schematic diagram of the overall structure of the utility model in use state.

[0029] In the figure: 1. Solar thermal component; 10. Strip base; 11. First U-shaped bracket; 12. Second U-shaped bracket; 13. First L-shaped support plate; 130. Positioning side plate; 14. Second L-shaped support plate; 15. First clamping bolt; 16. Second clamping bolt; 17. Strip support plate; 18. Flat-plate solar collector; 180. Positioning slot; 2. Hot water storage tank; 20. First return pipe; 21. Water supply pipe; 22. First water outlet pipe; 23. Second water outlet pipe; 24. Third water outlet pipe; 25. Second return pipe; 19. Connecting pipe; 3. Hot water tank; 30. Water output pipe; 4. Heating pipe; 5. First pump body; 6. Second pump body; 7. Third pump body; 8. First water supply pipe; 9. Return pipe; 26. Second water supply pipe; 27. Electric heating rod; 28. Controller. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] See also Figure 1-Figure 7 , the utility model provides a technical solution:

[0033] A solar thermal building roof structure includes a plurality of solar thermal components 1 installed on the roof and a hot water storage tank 2, a hot water supply tank 3 and a heating pipe 4 installed indoors. The solar thermal component 1 includes a strip base 10 fixedly installed on the roof, a first U-shaped bracket 11 is provided at the left end of the strip base 10, a first L-shaped support plate 13 is provided on the top of the first U-shaped bracket 11, a second U-shaped bracket 12 is provided on the right end of the strip base 10, a second L-shaped support plate 14 is provided on the top of the second U-shaped bracket 12, the first L-shaped support plate 13 and the second L-shaped support plate 14 jointly support a flat-plate solar collector 18, and the two adjacent solar thermal components 1 are connected. The flat-plate solar thermal collector 18 is connected via a connecting pipe 19. The height of the first U-shaped bracket 11 is less than the height of the second U-shaped bracket 12, so that the flat-plate solar thermal collector 18 is arranged at an angle, which is conducive to the flat-plate solar thermal collector 18 absorbing the radiant energy of sunlight. The first L-shaped support plate 13 and the second L-shaped support plate 14 can support the flat-plate solar thermal collector 18. When installing the flat-plate solar thermal collector 18, the flat-plate solar thermal collector 18 is placed on the first L-shaped support plate 13 and the second L-shaped support plate 14. The connecting pipe 19 guides the water in the previous flat-plate solar thermal collector 18 into the next flat-plate solar thermal collector 18;

[0034] A first return pipe 20 and a water supply pipe 21 are provided on the front side of the hot water storage tank 2 and near the top. The water supply pipe 21 is connected to the tap water pipe. When the water in the hot water storage tank 2 is low, water is supplied to the hot water storage tank 2 by means of components such as a water level sensor and a solenoid valve. This is an existing mature technology and will not be described in detail here. The first return pipe 20 is connected to the output end of the flat-plate solar collector 18 in the last solar thermal component 1 through the return pipe 9. A first water outlet pipe 22, a second water outlet pipe 23 and a third water outlet pipe 24 are provided at the bottom of the rear side of the hot water storage tank 2. The first water outlet pipe 22, the second water outlet pipe 23 and the third water outlet pipe Valves are provided on the water pipes 24 so that the staff can control the switches of the first water outlet pipe 22, the second water outlet pipe 23 and the third water outlet pipe 24 respectively, which is convenient for use. The output end of the first water outlet pipe 22 is connected to the first pump body 5, and the output end of the first pump body 5 is connected to the input end of the flat-plate solar collector 18 in the first solar thermal assembly 1 through the first water supply pipe 8. The first pump body 5 transports the water in the hot water storage tank 2 to the flat-plate solar collectors 18 in the multiple solar thermal assemblies 1, and the flowing water is heated by the flat-plate solar collectors 18, so that the water in the hot water storage tank 2 can be heated;

[0035] The output end of the second water outlet pipe 23 is connected to the second pump body 6, and the output end of the second pump body 6 is communicated with the input end of the heating pipe 4. A second return pipe 25 is provided on the top of the hot water storage tank 2, and the output end of the heating pipe 4 is communicated with the second return pipe 25. When it is necessary to heat the room, the control valve on the second water outlet pipe 23 can be opened, and the second pump body 6 can be started to work, so that the hot water in the hot water storage tank 2 enters the heating pipe 4, and the heating pipe 4 exchanges heat with the indoor air, thereby heating the room. The water after heat exchange can flow back to the hot water storage tank 2 and be heated;

[0036] The output end of the third water outlet pipe 24 is connected to the third pump body 7, and the output end of the third pump body 7 is connected to the hot water tank 3 through the second water supply pipe 26. The bottom of the hot water tank 3 is provided with a water output pipe 30 with a valve. The third pump body 7 delivers hot water to the hot water tank 3. When hot water is needed, the valve of the water output pipe 30 can be opened to output the hot water in the hot water tank 3.

[0037] In this embodiment, a plurality of mounting holes are provided at the top of the strip base 10, the bottom of the inner wall of the first U-shaped bracket 11 and the bottom of the inner wall of the second U-shaped bracket 12. The strip base 10, the first U-shaped bracket 11 and the second U-shaped bracket 12 are all detachably connected to the roof by bolts. Anchor bolts can be used, the anchor bolts are preset on the roof, and then the strip base 10, the first U-shaped bracket 11 and the second U-shaped bracket 12 are fixed to the roof. When repairing or maintaining the flat-plate solar collector 18, there is no need to disassemble the strip base 10, the first U-shaped bracket 11 and the second U-shaped bracket 12.

[0038] Specifically, two strip support plates 17 are provided between the first L-shaped support plate 13 and the second L-shaped support plate 14 . The upper surface of the strip support plate 17 fits the lower surface of the flat-plate solar collector 18 , providing auxiliary support for the flat-plate solar collector 18 .

[0039] Furthermore, positioning side plates 130 are provided at both the front and rear ends of the first L-shaped support plate 13. The opposite sides of the two positioning side plates 130 are respectively fitted with the left ends of the front and rear sides of the flat-plate solar collector 18, thereby positioning the left end of the flat-plate solar collector 18.

[0040] Furthermore, the first and second clamping bolts 15 and 16 are respectively threadedly connected to the opposite sides and the middle positions of the first L-shaped support plate 13 and the second L-shaped support plate 14, and positioning slots 180 are provided on the left and right sides and the middle position of the aluminum alloy outer frame of the flat-plate solar collector 18. The threaded ends of the first and second clamping bolts 15 and 16 are respectively inserted into the two positioning slots 180, and the flat-plate solar collector 18 is positioned between the first L-shaped support plate 13 and the second L-shaped support plate 14 by the first and second clamping bolts 15 and 16, so that the position of the flat-plate solar collector 18 is fixed, which is convenient for the staff to disassemble and assemble the flat-plate solar collector 18.

[0041] Furthermore, the hot water supply tank 3 is installed near the roof, and the content of the hot water supply tank 3 is one fifth of the content of the hot water storage tank 2, ensuring that the hot water in the hot water storage tank 2 can be supplied in sufficient quantity.

[0042] Furthermore, electric heating rods 27 are provided in the hot water supply tank 3 and the hot water storage tank 2, and a controller 28 is provided on the front side of the hot water storage tank 2 for controlling the heating temperature of the hot water in the hot water supply tank 3 and the hot water storage tank 2 respectively, so as to avoid the water in the hot water supply tank 3 from being too hot during heating, and also to avoid the water in the hot water storage tank 2 from being too hot during use.

[0043] When the solar thermal building roof structure of this embodiment is in use, the staff presets the anchor bolts on the roof, then fixes the strip base 10, the first U-shaped bracket 11 and the second U-shaped bracket 12 on the roof, and then places the flat-plate solar collector 18 on the first L-shaped support plate 13 and the second L-shaped support plate 14, and then tightens the first clamping bolt 15 and the second clamping bolt 16, so that the threaded ends of the first clamping bolt 15 and the second clamping bolt 16 are respectively inserted into the two positioning slots 180, and the flat-plate solar collector 18 is positioned on the first L-shaped support plate 13 and the second L-shaped support plate 14, thereby fixing the position of the flat-plate solar collector 18, so that the staff can disassemble and assemble the flat-plate solar collector 18, and then use the connecting pipe 19 to connect the flat-plate solar collectors 18 in the two adjacent solar thermal assemblies 1, and then use the return pipe 9 to connect the first return pipe 20 with the output end of the flat-plate solar collector 18 in the last solar thermal assembly 1, use the first water supply pipe 8 to connect the output end of the first pump body 5 with the input end of the flat-plate solar collector 18 in the first solar thermal assembly 1, and then use the output end of the second pump body 6 to connect the output end of the second pump body 6 to the output end of the flat-plate solar collector 18 in the first solar thermal assembly 1. The first pump body 5 is connected to the input end of the heating pipe 4, the output end of the heating pipe 4 is connected to the second return pipe 25, and then the output end of the third pump body 7 is connected to the hot water tank 3 through the second water supply pipe 26 to realize the installation of all the equipment of the roof structure of the solar thermal building. After that, the staff starts the first pump body 5 to work, and the first pump body 5 transports the water in the hot water storage tank 2 to the flat-plate solar collector 18 in the multiple solar thermal components 1. The flowing water is heated by the flat-plate solar collector 18, so that the water in the hot water storage tank 2 can be heated; when it is necessary to heat the room, the first pump body 5 can be opened. The control valve on the second water outlet pipe 23 is opened, and the second pump body 6 is started to work, so that the hot water in the hot water storage tank 2 enters the heating pipe 4, and the heating pipe 4 exchanges heat with the indoor air, thereby heating the room. The water after heat exchange can flow back to the hot water storage tank 2 and be heated. If the heating temperature is not enough, the electric heating rod 27 in the hot water storage tank 2 can be started to work for auxiliary heating; when hot water is needed, the valve of the water output pipe 30 can be opened to output the hot water in the hot water tank 3. If the water temperature is not enough, the electric heating rod 27 in the hot water tank 3 can be started to work for auxiliary heating.

[0044] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A solar thermal building roof structure, comprising a plurality of solar thermal modules (1) mounted on the roof and a hot water storage tank (2), a hot water supply tank (3) and a heating pipe (4) mounted indoors, characterized in that: The solar thermal assembly (1) comprises a strip base (10) fixedly mounted on a roof, a first U-shaped bracket (11) being provided at the left end of the strip base (10), a first L-shaped support plate (13) being provided at the top of the first U-shaped bracket (11), a second U-shaped bracket (12) being provided at the right end of the strip base (10), a second L-shaped support plate (14) being provided at the top of the second U-shaped bracket (12), the first L-shaped support plate (13) and the second L-shaped support plate (14) jointly supporting Flat-plate solar thermal collector (18), the flat-plate solar thermal collectors (18) in two adjacent solar thermal assemblies (1) are connected via a connecting pipe (19), a first return pipe (20) and a water supply pipe (21) are provided at the front side and near the top of the heat storage tank (2), the first return pipe (20) is connected to the output end of the flat-plate solar thermal collector (18) in the last solar thermal assembly (1) via a return pipe (9), and a first return pipe (21) is provided at the bottom of the rear side of the heat storage tank (2). A water outlet pipe (22), a second water outlet pipe (23) and a third water outlet pipe (24), wherein the first water outlet pipe (22), the second water outlet pipe (23) and the third water outlet pipe (24) are all provided with valves, the output end of the first water outlet pipe (22) is connected to a first pump body (5), the output end of the first pump body (5) is communicated with the input end of the flat-plate solar collector (18) in the first solar thermal component (1) through a first water supply pipe (8), the output end of the second water outlet pipe (23) is connected to a second pump body (5), The output end of the second pump body (6) is communicated with the input end of the heating pipe (4); a second return pipe (25) is provided on the top of the hot water storage tank (2); the output end of the heating pipe (4) is communicated with the second return pipe (25); the output end of the third water outlet pipe (24) is connected to the third pump body (7); the output end of the third pump body (7) is communicated with the hot water tank (3) through the second water supply pipe (26); and a water output pipe (30) with a valve is provided at the bottom of the hot water tank (3).

2. The solar thermal building roof structure according to claim 1, characterized in that: A plurality of mounting holes are provided on the top of the strip base (10), the bottom of the inner wall of the first U-shaped bracket (11), and the bottom of the inner wall of the second U-shaped bracket (12); and the strip base (10), the first U-shaped bracket (11), and the second U-shaped bracket (12) are all detachably connected to the roof via bolts.

3. The solar thermal building roof structure according to claim 1, characterized in that: Two strip-shaped support plates (17) are provided between the first L-shaped support plate (13) and the second L-shaped support plate (14), and the upper surfaces of the strip-shaped support plates (17) are in contact with the lower surface of the flat-plate solar thermal collector (18).

4. The solar thermal building roof structure according to claim 1, characterized in that: Positioning side plates (130) are provided at both the front and rear ends of the first L-shaped support plate (13), and the opposite sides of the two positioning side plates (130) are respectively fitted with the left ends of the front and rear sides of the flat-plate solar collector (18).

5. The solar thermal building roof structure according to claim 1, characterized in that: A first clamping bolt (15) and a second clamping bolt (16) are respectively threadedly connected at the middle positions of the opposite sides of the first L-shaped support plate (13) and the second L-shaped support plate (14); positioning slots (180) are respectively provided at the middle positions of the left and right sides of the aluminum alloy outer frame of the flat-plate solar collector (18); and the threaded ends of the first clamping bolt (15) and the second clamping bolt (16) are respectively inserted into the two positioning slots (180).

6. The solar thermal building roof structure according to claim 1, characterized in that: The hot water supply tank (3) is installed at a position close to the roof, and the content of the hot water supply tank (3) is one fifth of the content of the hot water storage tank (2).

7. The solar thermal building roof structure according to claim 1, characterized in that: The hot water supply tank (3) and the hot water storage tank (2) are both provided with electric heating rods (27), and the front side of the hot water storage tank (2) is provided with a controller (28).

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