A new type of solar photovoltaic thermal heating system

Abstract

The present invention provides a novel solar photovoltaic thermal heating system, which relates to the technical field of heating systems, including solar photovoltaic panels, a heat exchange component is installed on the back of the solar photovoltaic panel, the heat exchange component is connected to the heating component, the heating component is connected to the user end, an insulation shell is installed on the outside of the heating component, the insulation shell and the heat exchange component are connected through an automatic ventilation component, a cleaning component is installed on the heating component, the cleaning component is used to clean the heat exchange coil in the heating component, the cleaning component is installed on the heating component, the scale on the outside of the heat exchange coil is automatically cleaned, no manual cleaning is required, time and labor are saved, and the heat exchange coil is prevented from being easily scaled due to being placed in water for a long time, resulting in poor heat exchange effect of the heat exchange tube, and thus affecting the heating effect of the user end.

Description

Technical Field

[0001] The present invention relates to the technical field of heating systems, and in particular to a novel solar photovoltaic thermal heating system. Background Art

[0002] Using solar photovoltaic and thermal technology to achieve cogeneration is the most promising means in the field of solar energy applications. Solar cells use the photoelectric effect to convert solar energy into electrical energy. As the surface temperature of the solar panel increases, the power generation and efficiency of the solar cell will decrease. By converting the heat generated by the solar panel into thermal energy, it can not only cool the solar panel and ensure the power generation and efficiency of the solar cell, but also provide heating for the user end. When heating, heat exchange coils are usually used. The heat exchange coils are placed in a water tank. The heat storage medium in the heat exchange coils absorbs the heat generated by the solar energy and exchanges heat with the water in the water tank. The water in the water tank passes through the user end and exchanges heat with the user end during the circulation process. However, the heat exchange coils are prone to scaling if they are placed in water for a long time, resulting in poor heat exchange effect of the heat exchange tubes, which in turn affects the heating effect at the user end. Summary of the Invention

[0003] The present invention provides a novel solar photovoltaic thermal heating system to solve the technical problem that the heat exchange coil is easily scaled when placed in water for a long time, resulting in poor heat exchange effect of the heat exchange tube, thereby affecting the heating effect at the user end.

[0004] In order to solve the above technical problems, the present invention discloses a novel solar photovoltaic thermal heating system, comprising a solar photovoltaic panel, a heat exchange component installed on the back of the solar photovoltaic panel, the heat exchange component is connected to the heating component, the heating component is connected to the user end, an insulation shell is installed on the outside of the heating component, the insulation shell and the heat exchange component are connected through an automatic ventilation component, a cleaning component is installed on the heating component, and the cleaning component is used to clean the heat exchange coil in the heating component.

[0005] Preferably, the heat exchange assembly includes a heat exchange shell, which is fixedly arranged on the back of the solar photovoltaic panel. A cavity is provided inside the heat exchange shell, in which a heat exchange tube bundle is installed. The inlet of the heat exchange tube bundle is connected to the liquid inlet pipe, a power pump is installed on the liquid inlet pipe, and the outlet of the heat exchange tube bundle is connected to the liquid outlet pipe.

[0006] Preferably, three air intake branches are evenly spaced from left to right at the rear end of the cavity, the three air intake branches are connected to the air intake shell, the air intake shell is connected to the air intake pump through the air intake main pipe, and three air outlet branches are evenly spaced from left to right at the front end of the cavity, the three air outlet branches are connected to the air outlet shell, and the air outlet shell is connected to the air outlet main pipe.

[0007] Preferably, sealing plates are symmetrically provided on the left and right sides of the cavity, and the sealing plates are slidably connected to the straight sections on the heat exchange tube bundle. Fitting blocks are symmetrically provided on the front and back sides of one end of the sealing plates close to each other, and fitting grooves are provided on the fitting blocks. The fitting grooves on the left and right sides correspond to fitting holes, and the fitting holes on the front side correspond to the middle air outlet branch pipe, and the fitting holes on the rear side correspond to the middle air inlet branch pipe.

[0008] Preferably, the automatic ventilation component includes a contact switch 1 installed on the middle air outlet branch and the middle air inlet branch, a contact block 1 is installed in the fitting groove, the contact block 1 and the contact switch 1 are in corresponding contact, valve 1 is respectively installed on the middle air inlet branch and the middle air outlet branch, valve 2 is installed on the air inlet branch distributed on the left and right and the air outlet branch distributed on the left and right, contact switch 2 is installed on the side end of the cavity, and a contact block 2 is provided at the end of the sealing plate away from each other, the contact block 2 and the contact switch 2 are in corresponding contact, the contact switch 1 is electrically connected to valve 1, valve 2 and the air intake pump through controller 1, and the contact switch 2 is electrically connected to valve 1, valve 2 and the air intake pump through controller 2.

[0009] Preferably, the automatic ventilation component also includes a control shell, which is fixedly arranged at the side end of the insulation shell, and an interlayer cavity is provided inside the insulation shell. An active cavity is provided at the upper end of the control shell, and the active cavity is connected with the interlayer cavity through an opening at the side end of the insulation shell. The end of the interlayer cavity away from the opening is connected with the air outlet pipe. A cover plate 2 is provided at the upper end of the active cavity, and air vents are symmetrically provided at the left and right ends of the active cavity. A sealed insulation plate is slidably provided between the left and right ends of the active cavity, and the sealed insulation plate is arranged at the front side of the air vent. A number of springs are fixed between the rear end of the sealed insulation plate and the side end of the insulation shell, and a distance sensor is provided at the front end of the sealed insulation plate. The distance sensor is electrically connected to the air intake pump through controller 3, and the front end of the active cavity is connected to the air outlet main pipe.

[0010] Preferably, the heating component includes a heating shell, which is arranged inside the insulation shell, and a heat exchange coil is provided inside the heating shell. The interiors of the heating shell and the insulation shell are both cylindrical cavities, the liquid inlet pipe passes through the side end of the insulation shell and the side end of the heating shell and is connected with the outlet of the heat exchange coil, the liquid outlet pipe passes through the side end of the insulation shell and the side end of the heating shell and is connected with the inlet of the heat exchange coil, the upper side of the interior of the heating shell is connected with a water inlet pipe, and the lower side of the interior of the heating shell is connected with a water outlet pipe, and both the water inlet pipe and the water outlet pipe pass through the side end of the insulation shell and are connected with an external water supply device.

[0011] Preferably, the cleaning assembly includes a cover plate 1 arranged at the upper end of the heating shell, a rotating disk is rotatably provided in the middle of the cover plate 1, the rotating disk is fixedly connected to the ring gear, the ring gear is engaged with the gear, the gear is fixedly connected to the motor, and a plurality of support blocks are evenly distributed circumferentially on the upper end of the insulation shell, and the plurality of support blocks are fixedly connected to the cleaning bucket, and the support blocks on one side are fixedly connected to the motor.

[0012] Preferably, a cleaning sleeve is provided on the outside of the heat exchange coil, and a cleaning arc groove is provided on the cleaning sleeve, and the cleaning arc groove is slidably connected to the outside of the heat exchange coil, and a number of scrapers are evenly spaced on the outside of the cleaning sleeve, and the scrapers are in corresponding contact with the inner side walls of the heating shell, and connecting blocks are symmetrically provided on the front and back sides of the upper end of the cleaning sleeve, and the connecting blocks pass through the rotating disk and are fixedly connected to the pushing disk, and the connecting blocks are slidably connected to the rotating disk, and a through hole is passed through the middle of the pushing disk, and the through hole corresponds to the guide shaft, and a spiral groove is provided on the guide shaft, and the spiral groove is slidably connected to the guide ball, and the guide ball is rotatably set in the through hole, and the guide shaft is fixedly connected to the fixed shaft, and the fixed shaft passes through the rotating disk and is fixedly connected to the inner lower end of the heating shell.

[0013] Preferably, a liquid storage chamber is provided at the lower end of the cleaning barrel, a push plate is movably provided in the liquid storage chamber, the upper end of the cleaning barrel is connected with a liquid through pipe and a liquid return pipe, the liquid through pipe is connected with the interior of the cleaning block, the cleaning block is installed on the inner side wall of the heating shell, a plurality of liquid spray outlets are evenly spaced in the upper and lower directions of the cleaning block, the liquid spray outlets are arranged corresponding to the heat exchange coil, the inner lower side of the heating shell is connected with the liquid return pipe, and a liquid return pump and a filtering device are installed on the liquid return pipe.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] A cleaning component is installed on the heating component to automatically clean the scale on the outside of the heat exchange coil. No manual cleaning is required, which saves time and effort. It also prevents the heat exchange coil from being easily scaled due to being placed in water for a long time, resulting in a deterioration in the heat exchange effect of the heat exchange tube, and thus affecting the heating effect at the user end. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the heat exchange shell connection structure of the present invention;

[0019] Figure 3 Schematic diagram of the internal structure of the heat exchange shell of the present invention;

[0020] Figure 4 Schematic diagram of the insulation shell connection structure of the present invention Figure 1 ;

[0021] Figure 5 Schematic diagram of the insulation shell connection structure of the present invention Figure 2 ;

[0022] Figure 6 for Figure 5 Schematic diagram of the enlarged structure of area A;

[0023] Figure 7 This is a schematic diagram of the internal structure of the heating shell of the present invention;

[0024] Figure 8 This is a schematic diagram of the connection structure of the cleaning kit of the present invention.

[0025] Figure: 1. Solar photovoltaic panel; 2. Heat exchange shell; 3. Air intake shell; 4. Air intake pump; 5. Air intake main pipe; 6. Air intake branch pipe; 7. Air outlet main pipe; 8. Heat exchange tube bundle; 9. Sealing plate; 10. Fitting block; 11. Liquid inlet pipe; 12. Liquid outlet pipe; 13. Power pump; 14. Water outlet pipe; 15. Water inlet pipe; 16. Insulation shell; 17. Control shell; 18. Air outlet pipe; 19. Cleaning bucket; 20. Support block; 21. Motor; 22. Gear; 23. Gear ring; 24. Push plate; 25 , guide shaft; 26, cover plate 1; 27, sealing insulation board; 28, spring; 29, opening; 30, vent; 31, movable cavity; 32, spiral groove; 33, connecting block; 34, fitting groove; 35, fixed shaft; 36, heat exchange coil; 37, cleaning block; 38, liquid spray port; 39, cleaning sleeve block; 40, scraper; 41, cover plate 2; 42, liquid storage cavity; 43, rotating disk; 44, air outlet shell; 45, air outlet branch pipe; 46, liquid return pipe; 47, liquid pipe; 48, heating shell. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0027] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but this must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0028] The present invention provides the following embodiments

[0029] Example 1: The present invention provides a novel solar photovoltaic thermal heating system. Figure 1 、 Figure 7 As shown, it includes a solar photovoltaic panel 1, a heat exchange component is installed on the back of the solar photovoltaic panel 1, the heat exchange component is connected to the heating component, the heating component is connected to the user end, an insulation shell 16 is installed on the outside of the heating component, the insulation shell 16 and the heat exchange component are connected through an automatic ventilation component, and a cleaning component is installed on the heating component, which is used to clean the heat exchange coil 36 in the heating component.

[0030] The working principle of the above technical solution is:

[0031] The heat storage medium in the heat exchange component is connected to the heating component. The heat storage medium in the heat exchange component is used to absorb the solar heat absorbed by the solar photovoltaic panel 1 when it is working. The heat storage medium after absorbing the heat flows into the heat exchange coil 36 of the heating component. The heat exchange coil 36 is placed in a water tank, and the heating component is connected to the user end through water. After heat exchange through the heat exchange coil 36, the water that absorbs the heat enters the user end and releases heat to achieve the purpose of heating. The insulation shell 16 can insulate the heat exchange process of the heat exchange coil 36 in the heat exchange component to prevent its heat exchange process from being affected by the external environment, thereby affecting the heat exchange effect. A cleaning component is installed on the heating component to automatically clean the scale on the outside of the heat exchange coil 36. No manual cleaning is required, which saves time and effort, and solves the technical problem that the heat exchange coil is prone to scaling when placed in water for a long time, resulting in poor heat exchange effect of the heat exchange tube, and then affecting the heating effect of the user end.

[0032] Example 2: Based on Example 1, Figure 1-Figure 3 As shown, the heat exchange assembly includes a heat exchange shell 2, which is fixedly arranged on the back of the solar photovoltaic panel 1. The heat exchange shell 2 has a cavity inside, in which a heat exchange tube bundle 8 is installed. The inlet of the heat exchange tube bundle 8 is connected to the liquid inlet pipe 11, and a power pump 13 is installed on the liquid inlet pipe 11. The outlet of the heat exchange tube bundle 8 is connected to the liquid outlet pipe 12.

[0033] Three air intake branches 6 are evenly spaced from left to right at the rear end of the cavity. The three air intake branches 6 are connected to the air intake shell 3, and the air intake shell 3 is connected to the air intake pump 4 through the air intake main pipe 5. Three air outlet branches 45 are evenly spaced from left to right at the front end of the cavity. The three air outlet branches 45 are connected to the air outlet shell 44, and the air outlet shell 44 is connected to the air outlet main pipe 7.

[0034] Sealing plates 9 are symmetrically provided on the left and right sides of the cavity, and the sealing plates 9 are slidably connected to the straight sections on the heat exchange tube bundle 8. Fitting blocks 10 are symmetrically provided on the front and back sides of the ends of the sealing plates 9 that are close to each other. Fitting grooves 34 are provided on the fitting blocks 10. The fitting grooves 34 on the left and right sides correspond to fitting holes. The fitting hole on the front side corresponds to the middle air outlet branch pipe 45, and the fitting hole on the rear side corresponds to the middle air inlet branch pipe 6.

[0035] The working principle of the above technical solution is:

[0036] A heat storage medium flows through the heat exchange tube bundle 8. The heat storage medium is used to absorb heat from the solar energy. The heat storage medium can circulate through the liquid inlet pipe 11 and the liquid outlet pipe 12. The air in the cavity can also absorb heat from the solar energy. When the air intake pump 4 is working, the outside air can enter the air intake shell 3 through the air intake main pipe 5. The air in the air intake shell 3 enters the cavity through the air intake branch pipe 6. The air in the cavity that has absorbed heat enters the air outlet shell 44 through the air outlet branch pipe 45 and finally flows out through the air outlet main pipe 7.

[0037] Sealing plates 9 are symmetrically arranged on the left and right sides of the cavity. The sealing plates 9 are arranged between the upper and lower ends of the cavity. A closed space 1 is formed between the sealing plates 9 on the left and right sides. A closed space 2 is formed between the sealing plate 9 on the left and the left end of the cavity, and between the sealing plate 9 on the right and the right end of the air. When the air inlet branch pipe 6 in the middle inputs air into the cavity, the sealing plates 9 on the left and right sides are pushed to move away from each other under the air pressure, and the volume of the closed space 1 increases, and the outside air enters the closed space 1 to facilitate the subsequent absorption of solar heat. When the sealing plates 9 on the left and right sides move, the air that absorbs heat in the closed space 2 is squeezed into the air outlet shell 44 through the air outlet branch pipes 45 on the left and right sides, and the volume of the closed space 2 is reduced. When the air inlet branch pipes 6 on the left and right sides input air into the cavity Under the air pressure, the sealing plates 9 on the left and right sides will be pushed to move towards each other, and the volume of the enclosed space 1 will become smaller. When the sealing plates 9 on the left and right sides move, the air that absorbs heat in the enclosed space 2 will be squeezed into the air outlet shell 44 through the air outlet branches 45 on the left and right sides. The volume of the enclosed space 2 will become larger, and the outside air will enter the enclosed space 2 to facilitate the subsequent absorption of solar heat. The setting of the sealing plates 9 is used to separate the air that absorbs heat from the air replenished into the cavity from the outside, so as to avoid the mixing of the air that absorbs heat and the air replenished into the cavity from the outside, which affects the storage and transfer of heat through the air. In addition, during the movement of the sealing plates 9, the impurities accumulated on the straight section of the heat exchange tube bundle 8 can be scraped off to avoid the accumulation of impurities on the outside of the heat exchange tube bundle 8 and thus affecting the heat exchange effect.

[0038] Example 3: Based on Example 2, Figures 1-6As shown, the automatic ventilation component includes a contact switch 1 installed on the middle air outlet branch 45 and the middle air inlet branch 6, a contact block 1 is installed in the fitting groove 34, and the contact block 1 is in corresponding contact with the contact switch 1. Valve 1 is respectively installed on the middle air inlet branch 6 and the middle air outlet branch 45, and valve 2 is installed on the left and right air inlet branch 6 and the left and right air outlet branch 45. Contact switch 2 is installed at the side end of the cavity, and a contact block 2 is provided at the end of the sealing plate 9 away from each other. Contact block 2 is in corresponding contact with contact switch 2. Contact switch 1 is electrically connected to valve 1, valve 2 and air intake pump 4 respectively through controller 1, and contact switch 2 is electrically connected to valve 1, valve 2 and air intake pump 4 respectively through controller 2.

[0039] The automatic ventilation component also includes a control shell 17, which is fixedly arranged at the side end of the insulation shell 16. The insulation shell 16 has an interlayer cavity inside. The upper end of the control shell 17 is provided with an active cavity 31. The active cavity 31 is connected with the interlayer cavity through an opening 29 at the side end of the insulation shell 16. The end of the interlayer cavity away from the opening 29 is connected with the air outlet pipe 18. The upper end of the active cavity 31 is provided with a cover plate 241. The left and right ends of the active cavity 31 are symmetrically provided with air vents 30. A sealing insulation plate 27 is slidably provided between the left and right ends of the active cavity 31. The sealing insulation plate 27 is arranged at the front side of the air vent 30. A number of springs 28 are fixed between the rear end of the sealing insulation plate 27 and the side end of the insulation shell 16. The front end of the sealing insulation plate 27 is provided with a distance sensor. The distance sensor is electrically connected to the air intake pump 4 through the controller three. The front end of the active cavity 31 is connected to the air outlet main pipe 7.

[0040] The working principle of the above technical solution is:

[0041] The setting of the second cover plate 41 makes the active cavity 31 a closed cavity. The active cavity 31 is always in communication with the cavity through the air outlet main pipe 7 and the air outlet branch pipe 45. The air in the cavity flowing out of the air outlet main pipe 7 absorbs too much heat and the temperature rises. When the temperature of the air in the interlayer cavity decreases due to the heat exchange of the heat exchange coil 36 and the influence of the external environment, the high-temperature air pushes the sealed insulation plate 27 toward the opening 29 under the temperature difference and thermal expansion and contraction. The spring 28 is compressed until the sealed insulation plate 27 is no longer located in front of the vent 30 and moves to the corresponding position of the vent 30. At this time, the air that absorbs heat enters the interlayer cavity through the vent 30 and the opening 29, thereby increasing the temperature of the air in the interlayer cavity and causing part of the air with a lowered temperature in the interlayer cavity to be discharged through the air outlet pipe 18, thereby ensuring the thermal insulation effect of the insulation shell 16.

[0042] The distance sensor is used to detect the distance between the front end of the sealed insulation plate 27 and the front end of the active cavity 31. When the distance sensor detects that the distance between the front end of the sealed insulation plate 27 and the front end of the active cavity 31 reaches the target distance, that is, the sealed insulation plate 27 moves to the corresponding position of the vent 30, the distance sensor controls the air intake pump 4 through the controller to start the air intake operation, so that the air that absorbs heat in the cavity is discharged through the air outlet pipe 7 and enters the interlayer cavity. The sealing plates 9 on the left and right sides move toward each other. After the contact block 1 in the fitting groove 34 contacts the contact switch 1, the volume of the enclosed space 2 reaches the maximum, and the air stored therein can absorb heat subsequently. The contact switch 1 controls the valve 1 to open and the valve 2 to close through the controller, and the air intake pump 4 stops working, indicating that the air that absorbs heat in the enclosed space 1 is discharged from the cavity. After the discharge is completed, the sealing plates 9 on the left and right sides move away from each other. After the contact block 2 contacts the contact switch 2, the volume of the enclosed space 1 reaches the maximum, and the air stored therein can absorb heat subsequently. The contact switch 2 controls the valve 1 to close, the valve 2 to open, and the air intake pump 4 to stop working through the controller 2, indicating that the air that absorbs heat in the enclosed space 2 is discharged from the cavity. The maximum volumes of the enclosed space 1 and the enclosed space 2 are both greater than the volume of the interlayer cavity, and the volume of the enclosed space 1 is the largest when the volume of the enclosed space 1 is the smallest, and the volume of the enclosed space 2 is the largest when the volume of the enclosed space 1 is the smallest. The enclosed space 1 and the enclosed space 2 take turns to discharge the air that absorbs heat. The setting of the automatic ventilation component can automatically replace the air that absorbs heat in the cavity with the air after the interlayer cavity is cooled, thereby ensuring the insulation work of the insulation shell 16.

[0043] Example 4: Based on Example 1, Figure 1 、 Figure 4-Figure 5 As shown, the heating component includes a heating shell 48, which is arranged inside the insulation shell 16. A heat exchange coil 36 is provided inside the heating shell 48. The interiors of the heating shell 48 and the insulation shell 16 are both cylindrical cavities. The liquid inlet pipe 11 passes through the side end of the insulation shell 16 and the side end of the heating shell 48 and is connected to the outlet of the heat exchange coil 36. The liquid outlet pipe 12 passes through the side end of the insulation shell 16 and the side end of the heating shell 48 and is connected to the inlet of the heat exchange coil 36. The upper side of the interior of the heating shell 48 is connected to the water inlet pipe 15, and the lower side of the interior of the heating shell 48 is connected to the water outlet pipe 14. The water inlet pipe 15 and the water outlet pipe 14 both pass through the side end of the insulation shell 16 and are connected to the external water supply device.

[0044] The working principle of the above technical solution is:

[0045] The interior of the insulation shell 16 is used to place water to be heat exchanged. When the power pump 13 is working, the heat storage medium circulates through the heat exchange tube bundle 8, the liquid inlet pipe 11, the liquid outlet pipe 12 and the heat exchange coil 36, and the water inside the insulation shell 16 is heat exchanged through the heat exchange coil 36. The water supply device can be a water supply pump, and the water outlet pipe 14 and the water inlet pipe 15 are connected to the user end, which is used to make the water that absorbs heat inside the insulation shell 16 circulate through the water outlet pipe 14, the water inlet pipe 15 and the user end, so that the water after absorbing heat releases heat at the user end, thereby completing the heating of the user end.

[0046] Example 5: Based on Example 4, Figures 1-8 As shown, the cleaning assembly includes a cover plate 26 provided at the upper end of the heating shell 48, a rotating disk 43 is rotatably provided in the middle of the cover plate 26, the rotating disk 43 is fixedly connected to the ring gear 23, the ring gear 23 is engaged with the gear 22, the gear 22 is fixedly connected to the motor 21, and a plurality of support blocks 20 are evenly distributed circumferentially on the upper end of the heat preservation shell 16, and the plurality of support blocks 20 are fixedly connected to the cleaning bucket 19, wherein the support block 20 on one side is fixedly connected to the motor 21;

[0047] A cleaning sleeve 39 is provided on the outside of the heat exchange coil 36. The cleaning sleeve 39 is provided with a cleaning arc groove, and the cleaning arc groove is slidably connected to the outside of the heat exchange coil 36. A number of scrapers 40 are evenly spaced on the outside of the cleaning sleeve 39. The scrapers 40 are in corresponding contact with the inner side walls of the heating shell 48. Connecting blocks 33 are symmetrically provided on the front and rear sides of the upper end of the cleaning sleeve 39. The connecting blocks 33 pass through the rotating disk 43 and are fixedly connected to the push disk 24. The connecting blocks 33 are slidably connected to the rotating disk 43. A through hole is passed through the middle of the push disk 24, and the through hole corresponds to the guide shaft 25. A spiral groove 32 is provided on the guide shaft 25. The spiral groove 32 is slidably connected to the guide ball. The guide ball is rotatably set in the through hole. The guide shaft 25 is fixedly connected to the fixed shaft 35. The fixed shaft 35 passes through the rotating disk 43 and is fixedly connected to the lower end of the interior of the heating shell 48.

[0048] A liquid storage chamber 42 is provided at the lower end of the cleaning barrel 19, and a push disk 24 is movably provided in the liquid storage chamber 42. The upper end of the cleaning barrel 19 is connected to a liquid through pipe 47 and a liquid return pipe 46. The liquid through pipe 47 is connected to the interior of the cleaning block 37. The cleaning block 37 is installed on the inner side wall of the heating shell 48. The cleaning block 37 is evenly spaced along the upper and lower directions. A plurality of liquid spray ports 38 are arranged corresponding to the heat exchange coil 36. The lower inner side of the heating shell 48 is connected to the liquid return pipe 46. A liquid return pump and a filtering device are installed on the liquid return pipe 46.

[0049] The working principle of the above technical solution is:

[0050] When cleaning the scale outside the heat exchange coil 36, start the motor 21, the motor 21 drives the gear 22 to rotate, the gear 22 drives the ring gear 23 to rotate, the ring gear 23 drives the rotating disk 43 to rotate, and when the rotating disk 43 rotates, it drives the cleaning sleeve 39 to rotate through the connecting block 33. When the connecting block 33 rotates, it also drives the push disk 24 to rotate. The push disk 24 and the rotating disk 43 rotate synchronously. The setting of the spiral groove 32, when the push disk 24 rotates, the guide ball in the through hole of the push disk 24 slides along the spiral groove 32. In this process, The push disk 24 moves upward along the guide shaft 25, and the push disk 24 drives the cleaning sleeve 39 to move upward through the connecting block 33, so that the cleaning sleeve 39 can move upward and rotate at the same time. The setting of the rotating disk 43 guides the up and down movement of the connecting block 33. When the cleaning sleeve 39 moves upward and rotates, the cleaning arc groove therein slides along the outside of the heat exchange coil 36 to clean the scale on the heat exchange coil 36. The cleaning sleeve 39 is equivalent to being threadedly connected to the heat exchange coil 36, and the heat exchange coil 36 is spiral.

[0051] When the pushing disk 24 moves upward, it can apply a driving force to the cleaning liquid in the liquid storage chamber 42. Under the action of the driving force, the cleaning liquid flows into the cleaning block 37 through the liquid pipe 47, and finally sprays the cleaning liquid through the liquid spray port 38. The cleaning liquid is sprayed on the corresponding heat exchange coil 36. Under the joint action of the cleaning liquid and the cleaning sleeve 39, the scale on the surface of the heat exchange coil 36 is cleaned, thereby improving the cleaning effect of the heat exchange coil 36. When the cleaning sleeve 39 rotates and moves upward, the scraper 40 on the outside scrapes the inner side wall of the heating shell 48, which can clean the scale on the side wall of the heating shell 48. After cleaning, the motor 21 is controlled to work in the reverse direction, so that the gear 22 rotates in the reverse direction, and finally the cleaning sleeve 39 and the pushing disk 24 rotate in the reverse direction, thereby cleaning the cleaning sleeve 39 and the pushing disk 24. The disc 24 moves downward and rotates in the opposite direction, so that the cleaning sleeve block 39 and the pushing disc 24 return to their original positions, and the cleaning block 37 does not protrude from the inner side wall of the heating shell 48, ensuring the normal scraping work of the scraper 40. After the pushing disc 24 returns to its original position, the volume in the liquid storage chamber 42 increases. At this time, the return liquid pump can be controlled to work. A filtering device is provided between the return liquid pump and the interior of the insulation shell 16. Optionally, the filtering device includes a shell and a filter screen, which is used to filter and collect scale impurities in the cleaning liquid. The filtered cleaning liquid enters the liquid storage chamber 42 for storage through the return liquid pipe 46, which is convenient for the next cleaning of the heat exchange coil 36. The setting of the cleaning component can automatically clean the scale of the heat exchange coil 36 without manual cleaning, saving time and effort.

[0052] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A new type of solar photovoltaic thermal heating system, characterized by: The solar photovoltaic panel (1) comprises a heat exchange component installed on the back of the solar photovoltaic panel (1), the heat exchange component is connected to the heating component, the heating component is connected to the user end, an insulation shell (16) is installed on the outside of the heating component, the insulation shell (16) and the heat exchange component are connected through an automatic ventilation component, and a cleaning component is installed on the heating component, and the cleaning component is used to clean the heat exchange coil (36) in the heating component; The heat exchange assembly comprises a heat exchange shell (2), the heat exchange shell (2) being fixedly arranged on the back of the solar photovoltaic panel (1), a cavity being provided inside the heat exchange shell (2), a heat exchange tube bundle (8) being installed in the cavity, an inlet of the heat exchange tube bundle (8) being connected to a liquid inlet pipe (11), a power pump (13) being installed on the liquid inlet pipe (11), and an outlet of the heat exchange tube bundle (8) being connected to a liquid outlet pipe (12); Three air inlet branches (6) are evenly spaced from left to right at the rear end of the cavity. The three air inlet branches (6) are connected to the air inlet shell (3). The air inlet shell (3) is connected to the air inlet pump (4) through the air inlet main pipe (5). Three air outlet branches (45) are evenly spaced from left to right at the front end of the cavity. The three air outlet branches (45) are connected to the air outlet shell (44). The air outlet shell (44) is connected to the air outlet main pipe (7). Sealing plates (9) are symmetrically provided on the left and right sides of the cavity. The sealing plates (9) are slidably connected to the straight sections on the heat exchange tube bundle (8). Fitting blocks (10) are symmetrically provided on the front and rear sides of the ends of the sealing plates (9) that are close to each other. Fitting grooves (34) are provided on the fitting blocks (10). The fitting grooves (34) on the left and right sides form fitting holes. The fitting hole on the front side is matched with the middle air outlet branch pipe (45), and the fitting hole on the rear side is matched with the middle air inlet branch pipe (6). The automatic ventilation component includes a contact switch 1 installed on the middle air outlet branch (45) and the middle air inlet branch (6), a contact block 1 is installed in the fitting groove (34), the contact block 1 and the contact switch 1 are in corresponding contact, the valve 1 is respectively installed on the middle air inlet branch (6) and the middle air outlet branch (45), the left and right air inlet branches (6) and the left and right air outlet branches (45) are both installed with valve 2, the contact switch 2 is installed at the side end of the cavity, the end of the sealing plate (9) away from each other is provided with a contact block 2, the contact block 2 and the contact switch 2 are in corresponding contact, the contact switch 1 is respectively electrically connected to the valve 1, the valve 2 and the air inlet pump (4) through the controller 1, and the contact switch 2 is respectively electrically connected to the valve 1, the valve 2 and the air inlet pump (4) through the controller 2.

2. A novel solar photovoltaic thermal heating system according to claim 1, characterized in that: The automatic ventilation assembly also includes a control shell (17), which is fixedly arranged at the side end of the heat-insulating shell (16), and an interlayer cavity is provided inside the heat-insulating shell (16). The upper end of the control shell (17) is provided with an active cavity (31), and the active cavity (31) is communicated with the interlayer cavity through an opening (29) at the side end of the heat-insulating shell (16). The end of the interlayer cavity away from the opening (29) is communicated with the air outlet pipe (18). The upper end of the active cavity (31) is provided with a cover plate 2 (41), and the left and right sides of the active cavity (31) are respectively provided with a cover plate 2 (41). The ends of the movable cavity (31) are symmetrically provided with air vents (30), a sealing heat-insulating plate (27) is slidably provided between the left and right ends of the movable cavity (31), the sealing heat-insulating plate (27) is arranged on the front side of the air vent (30), a plurality of springs (28) are fixedly provided between the rear end of the sealing heat-insulating plate (27) and the side end of the heat-insulating shell (16), a distance sensor is provided at the front end of the sealing heat-insulating plate (27), and the distance sensor is electrically connected to the air inlet pump (4) through the controller 3, and the front end of the movable cavity (31) is communicated with the air outlet main pipe (7).

3. A novel solar photovoltaic thermal heating system according to claim 1, characterized in that: The heating assembly includes a heating shell (48), which is arranged inside the insulation shell (16). A heat exchange coil (36) is provided inside the heating shell (48). The interiors of the heating shell (48) and the insulation shell (16) are both cylindrical cavities. The liquid inlet pipe (11) passes through the side end of the insulation shell (16) and the side end of the heating shell (48) and is connected to the outlet of the heat exchange coil (36). The liquid outlet pipe (12) passes through the side end of the insulation shell (16) and the side end of the heating shell (48) and is connected to the inlet of the heat exchange coil (36). The upper side of the interior of the heating shell (48) is connected to the water inlet pipe (15), and the lower side of the interior of the heating shell (48) is connected to the water outlet pipe (14). The water inlet pipe (15) and the water outlet pipe (14) both pass through the side end of the insulation shell (16) and are connected to the external water supply device.

4. A novel solar photovoltaic thermal heating system according to claim 3, characterized in that: The cleaning assembly includes a cover plate (26) provided at the upper end of the heating shell (48), a rotating disk (43) is rotatably provided in the middle of the cover plate (26), the rotating disk (43) is fixedly connected to the ring gear (23), the ring gear (23) is meshed with the gear (22), the gear (22) is fixedly connected to the motor (21), and a plurality of support blocks (20) are evenly distributed circumferentially on the upper end of the heat-insulating shell (16), the plurality of support blocks (20) are fixedly connected to the cleaning barrel (19), and the support blocks (20) on one side are fixedly connected to the motor (21).

5. A novel solar photovoltaic thermal heating system according to claim 4, characterized in that: A cleaning sleeve (39) is provided on the outside of the heat exchange coil (36), and a cleaning arc groove is provided on the cleaning sleeve (39), and the cleaning arc groove is slidably connected to the outside of the heat exchange coil (36). A plurality of scrapers (40) are evenly spaced on the outside of the cleaning sleeve (39), and the scrapers (40) are in contact with the inner side wall of the heating shell (48). The upper end of the cleaning sleeve (39) is symmetrically provided with connecting blocks (33) on both sides. The connecting blocks (33) pass through the rotating disk (43) and are connected to the pushing disk ( The driving disk (24) is fixedly connected, and the connecting block (33) is slidably connected to the rotating disk (43). A through hole is provided in the middle of the driving disk (24), and the through hole corresponds to the guide shaft (25). A spiral groove (32) is provided on the guide shaft (25), and the spiral groove (32) is slidably connected to the guide ball. The guide ball is rotatably arranged in the through hole. The guide shaft (25) is fixedly connected to the fixed shaft (35), and the fixed shaft (35) passes through the rotating disk (43) and is fixedly connected to the inner lower end of the heating shell (48).

6. A novel solar photovoltaic thermal heating system according to claim 5, characterized in that: The lower end of the cleaning barrel (19) is provided with a liquid storage chamber (42), and a push plate (24) is movably provided in the liquid storage chamber (42). The upper end of the cleaning barrel (19) is communicated with a liquid through pipe (47) and a liquid return pipe (46). The liquid through pipe (47) is communicated with the interior of the cleaning block (37). The cleaning block (37) is installed on the inner side wall of the heating shell (48). The cleaning block (37) is evenly spaced along the upper and lower directions. A plurality of liquid spray ports (38) are evenly spaced. The liquid spray ports (38) are correspondingly arranged with the heat exchange coil (36). The lower side of the interior of the heating shell (48) is communicated with the liquid return pipe (46). A liquid return pump and a filtering device are installed on the liquid return pipe (46).

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