Heat energy collecting and storing device based on solar heat collector

Abstract

The invention discloses a heat energy collection and storage device based on a solar heat collector, and relates to the technical field of heat energy storage. The invention aims to solve the matching problem of heat collection efficiency and energy conservation. The device specifically comprises a first connecting pipe connected to a water outlet of a solar heat collector and a second connecting pipe connected to a water inlet of the solar heat collector, the first connecting pipe and the second connecting pipe are connected with the same storage box, a filter is arranged on the first connecting pipe, a circulating pump is arranged on the second connecting pipe, and the circulating pump is connected with a water inlet of the solar heat collector. A circulation speed control part used for controlling the power of the circulation pump is arranged on the side wall of the storage box and comprises an iron core, a primary coil and a secondary coil. Power is supplied to the circulating pump on the basis of the electromagnetic induction principle, meanwhile, the input power of the circulating pump is changed through the matching position of the electrode tip and the secondary coil, and therefore the water circulating speed can be adjusted according to the temperature difference between generated heat and stored heat, and energy can be saved while the heat energy collecting efficiency is guaranteed.

Description

Technical Field

[0001] The invention relates to the technical field of thermal energy storage, and in particular to a thermal energy collection and storage device based on a solar thermal collector. Background Art

[0002] Solar collectors use the heat-absorbing coating on the vacuum glass tube to absorb solar radiation, and then convert the solar radiation into thermal energy to heat the water in the innermost layer of the vacuum glass tube. The hot water is then collected and stored in conjunction with a circulation pipeline and energy storage device to achieve light-conversion and utilization.

[0003] After searching, the Chinese patent publication number CN108548340B discloses a solar energy storage tank, including a tank body, a high-temperature fluid inlet and outlet are arranged on the side of the tank body, and a low-temperature fluid inlet and outlet are arranged on the top and bottom of the tank body. A plurality of filling layers are arranged in sequence from top to bottom inside the tank body, and the filling layers are filled with heat transfer medium. The heat transfer efficiency of the plurality of filling layers decreases from the middle to the upper and lower ends.

[0004] The above patent has the following deficiencies: it is unable to specifically adjust the circulation speed of the water circulation according to the temperature in the collector and the temperature in the energy storage tank, and is unable to achieve a balance between the temperature difference and the circulation speed, resulting in slow circulation, high heat leading to slow energy collection speed, or fast circulation, low heat leading to waste of circulation energy.

[0005] To this end, the present invention proposes a thermal energy collection and storage device based on a solar thermal collector. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a heat energy collection and storage device based on a solar thermal collector.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] A heat energy collection and storage device based on a solar thermal collector comprises a connecting pipe 1 connected to a water outlet of the solar thermal collector and a connecting pipe 2 connected to a water inlet of the solar thermal collector, wherein the connecting pipe 1 and the connecting pipe 2 are connected to the same storage box.

[0009] The connecting pipe 1 is provided with a filter, the connecting pipe 2 is provided with a circulation pump, and the side wall of the storage box is provided with a circulation speed control unit for controlling the power of the circulation pump;

[0010] The circulation speed control unit includes an iron core, a primary coil and a secondary coil. The iron core is fixed to the side wall of the storage box through an insulating bracket. The primary coil and the secondary coil are respectively wound on the outer wall of the iron core. The primary coil is externally connected to an AC power supply. The side wall of the secondary coil is in contact with and electrically connected to an electrode head. The electrode head is connected to the moving end of the telescope through a compensating connector.

[0011] One end of the secondary coil and the electrode head are electrically connected to two input terminals of the circulation pump respectively.

[0012] Preferably: the compensating connecting piece includes a guide slide rod and a spring 1, the electrode head is fixed to one end of the guide slide rod, the other end of the guide slide rod is slidably connected to the telescope, and the outer wall of the guide slide rod is buckled with a spring 1, and the other end of the spring 1 is buckled to the side wall of the telescope.

[0013] Furthermore: the telescopic device includes two heat exchange tubes located respectively inside the upper part of the storage box and inside the lower part of the storage box. The opening of each heat exchange tube is connected to a cylinder body, which is fixed to the side wall of the storage box by bolts, and the inner wall of the cylinder body is slidably connected to a piston rod, and the opposite sides of the two piston rods are fixed to each other by a mounting block.

[0014] On the basis of the above solution: the connecting pipe 1 is connected to the top of the storage box, and the connecting pipe 2 is connected to the bottom of the storage box.

[0015] A better solution in the above solution is: the other side of the storage box is connected to a two-way pump through a three-way pipe, the other end of the two-way pump is connected to a two-position three-way valve, and the other two interfaces of the two-position three-way valve are respectively connected to the water use end and the water supply end.

[0016] As a further solution of the present invention: a liquid level sensor is arranged on the bottom inner wall of the storage box, and the liquid level sensor comprises a cylinder shell fixed to the storage box, a piston sleeve slidably connected to the inner wall of the cylinder shell, and an elastic airbag connected and communicated with the opening of the cylinder shell.

[0017] At the same time, the piston sleeve is internally fixedly sealed with electrode sheet three, and the top and middle inner wall of the cylinder shell are respectively embedded with electrode sheet one and electrode sheet two that cooperate with electrode sheet three, and the electrode sheet one, electrode sheet two, and electrode sheet three are connected to alarms.

[0018] As a preferred embodiment of the present invention: a contact electrode is fixedly and sealedly embedded on the inner wall of the electrode sheet three, and a spring electrode is fixed on the bottom inner wall of the cylinder shell, and the spring electrode can be in contact with and cooperate with the contact electrode.

[0019] At the same time, when the piston sleeve contacts the electrode sheet, the contact electrode and the spring electrode are not in contact, and the contact electrode and the spring electrode are connected to the power supply circuit of the circulation pump.

[0020] As a more preferred solution of the present invention: the filter comprises an outer shell and end caps respectively fixed to both ends of the outer shell, a cotton spinning filter element is fixed to the inner wall of the outer shell, a curved surface slip ring is slidably connected to the inner wall of the outer shell, a plurality of through holes are opened on the inner wall of the curved surface slip ring, and an elastic rod is fixed to the other end of the curved surface slip ring, and the other end of the elastic rod is fixed to the side wall of one of the end caps, and a dirt collecting box is arranged at the bottom of the outer shell on the side of the cotton spinning filter element away from the curved surface slip ring;

[0021] The inner wall of the outer shell is provided with a plurality of groups of limiting members, and the limiting members include an arc head limiting rod limitedly matched with the arc surface slip ring and a spring 2 connected to the arc head limiting rod and the outer shell.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention realizes power supply to the circulation pump based on the principle of electromagnetic induction, and at the same time utilizes the matching position of the electrode head and the secondary coil to change the input power of the circulation pump, so as to adjust the water circulation speed according to the temperature difference between heat generation and storage, thereby ensuring the efficiency of heat energy collection and saving energy.

[0024] 2. The present invention provides a compensating connector. When a gap appears between the secondary coil and the electrode head due to friction loss, the elastic force of the spring 1 combined with the sliding of the guide slide bar can ensure reliable contact between the electrode head and the secondary coil, thereby preventing poor contact and increasing reliability.

[0025] 3. The present invention, by configuring the expansion joint as a combination of heat exchange tubes, pistons, mounting blocks and other components, and coordinating the inlet and outlet water positions of the storage box, can utilize the thermal expansion and contraction of the gas to achieve automatic adaptive power control of the circulation pump.

[0026] 4. The present invention sets the water inlet and outlet positions of the storage tank so that hot water enters from the top and cold water flows out from the bottom, thereby preventing the hot water after circulation from being immediately drawn out for circulation again, and the low heat collection efficiency caused by the small difference between its temperature and the temperature of the solar collector.

[0027] 5. The present invention, through targeted design of the liquid level sensor, can, on the one hand, respectively send out a full water alarm and a water shortage alarm; on the other hand, it can also prevent energy waste caused by idling of the circulation pump when there is a lack of water, based on the coordination of the contact electrode and the spring electrode.

[0028] 6. The present invention, through targeted design of the filter, can self-clean the cotton filter element. At the same time, the power of self-cleaning comes from the water flow, and no separate control is required. In addition, during reverse impact vibration cleaning, the pleats of the cotton filter element can be opened to increase the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a heat energy collection and storage device based on a solar thermal collector proposed by the present invention;

[0030] Figure 2 This is a schematic diagram of the structure of a circulation speed control unit of a heat energy collection and storage device based on a solar thermal collector proposed by the present invention;

[0031] Figure 3 A heat energy collection and storage device based on a solar thermal collector proposed by the present invention Figure 2 The enlarged structural diagram of part A in the middle;

[0032] Figure 4 A schematic diagram of the structure of a telescopic device of a heat energy collection and storage device based on a solar thermal collector proposed by the present invention;

[0033] Figure 5 This is a schematic diagram of the structure of the other side of a storage box of a heat energy collection and storage device based on a solar thermal collector proposed by the present invention;

[0034] Figure 6 A schematic diagram of the structure of a liquid level sensor for a heat energy collection and storage device based on a solar thermal collector proposed by the present invention;

[0035] Figure 7 A schematic diagram of the internal structure of a filter of a heat energy collection and storage device based on a solar thermal collector proposed by the present invention;

[0036] Figure 8 A heat energy collection and storage device based on a solar thermal collector proposed by the present invention Figure 7 Schematic diagram of the structure of part B;

[0037] Fig. 9 A schematic diagram of the circuit structure of a circulation pump of a heat energy collection and storage device based on a solar thermal collector proposed by the present invention;

[0038] Fig.10 This is a schematic diagram of the circuit structure of an alarm of a heat energy collection and storage device based on a solar thermal collector proposed by the present invention.

[0039] In the figure: 1, solar collector; 2, filter; 3, connecting pipe 1; 4, circulation speed control unit; 5, storage box; 6, connecting pipe 2; 7, circulation pump; 8, expansion joint; 9, insulation bracket; 10, iron core; 11, primary coil; 12, secondary coil; 13, electrode head; 14, guide slide; 15, spring 1; 16, heat exchange tube; 17, cylinder; 18, piston; 19, piston rod; 20, mounting block; 21, Three-way pipe; 22. Two-way pump; 23. Two-position three-way valve; 24. Cylinder shell; 25. Piston sleeve; 26. Electrode piece one; 27. Elastic airbag; 28. Contact electrode; 29. ​​Electrode piece two; 30. Spring electrode; 31. Outer shell; 32. End cover; 33. Arc surface slip ring; 34. Through hole; 35. Dirt collecting box; 36. Cotton filter element; 37. Spring two; 38. Arc head limit rod; 39. Electrode piece three; 40. Elastic rod. DETAILED DESCRIPTION

[0040] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0041] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0042] Embodiment 1:

[0043] A thermal energy collection and storage device based on a solar thermal collector, such as Figure 1-Figure 10 As shown, it includes a connecting pipe 1 3 connected to the water outlet of the solar collector 1 and a connecting pipe 2 6 connected to the water inlet of the solar collector 1, the connecting pipe 1 3 and the connecting pipe 2 6 are connected to the same storage box 5, the connecting pipe 1 3 is provided with a filter 2, the connecting pipe 2 6 is provided with a circulation pump 7, and the side wall of the storage box 5 is provided with a circulation speed control unit 4 for controlling the power of the circulation pump 7.

[0044] The circulation speed control unit 4 includes an iron core 10, a primary coil 11 and a secondary coil 12. The iron core 10 is fixed to the side wall of the storage box 5 through an insulating bracket 9. The primary coil 11 and the secondary coil 12 are respectively wound around the outer wall of the iron core 10. The primary coil 11 is externally connected to an AC power supply. The side wall of the secondary coil 12 is in contact with and electrically connected to an electrode head 13. The electrode head 13 is connected to the moving end of the telescope 8 through a compensating connector.

[0045] One end of the secondary coil 12 and the electrode head 13 are electrically connected to two input terminals of the circulation pump 7 respectively.

[0046] When the device is in use, the solar collector 1 can absorb solar radiation and generate heat energy. When the circulation pump 7 is started, the water source in the storage tank 5 can be transported to the solar collector 1. The water source flows away the heat energy generated by the solar collector 1, and then enters the storage tank 5 again after being filtered by the filter 2, thereby realizing the collection and storage of heat energy in the water circulation. At the same time, relative to the storage tank 5, when the difference between the water inlet temperature of the connecting pipe 1 3 and the water outlet temperature of the connecting pipe 2 6 is large, it means that the heat generation efficiency of the solar collector 1 is large. At this time, the telescopic device 8 controls the movement of the electrode head 13, thereby changing the position where the electrode head 13 contacts the secondary coil 12, increasing the access coil of the secondary coil 12, thereby increasing the power of the circulation pump 7 and increasing the water circulation speed. When the difference between the water inlet temperature of the connecting pipe 1 3 and the water outlet temperature of the connecting pipe 2 6 is small, the power of the circulation pump 7 is reduced, thereby reducing the water circulation speed.

[0047] This device realizes power supply to the circulation pump 7 based on the principle of electromagnetic induction, and at the same time utilizes the matching position of the electrode head 13 and the secondary coil 12 to change the input power of the circulation pump 7, so as to adjust the water circulation speed according to the temperature difference between heat generation and storage, thereby ensuring the efficiency of heat energy collection and saving energy.

[0048] In order to solve the compensation problem; Figure 3 As shown, the compensating connecting member includes a guide slide rod 14 and a spring 15, the electrode head 13 is fixed to one end of the guide slide rod 14, the other end of the guide slide rod 14 is slidably connected to the telescope 8, and the outer wall of the guide slide rod 14 is buckled with a spring 15, and the other end of the spring 15 is buckled to the side wall of the telescope 8.

[0049] Since the electrode head 13 and the secondary coil 12 frequently slide, friction loss will be caused, resulting in poor contact between the secondary coil 12 and the electrode head 13. In this device, a compensating connector is provided. When a gap appears between the secondary coil 12 and the electrode head 13 due to friction loss, the elastic force of the spring 15 combined with the sliding of the guide slide bar 14 can make the electrode head 13 and the secondary coil 12 in reliable contact, thereby preventing poor contact and increasing reliability.

[0050] In order to solve the adaptive control problem; such as Figure 4 As shown, the telescope 8 includes two heat exchange tubes 16 located respectively above and below the storage box 5. The opening of each heat exchange tube 16 is connected to a cylinder 17, which is fixed to the side wall of the storage box 5 by bolts, and the inner wall of the cylinder 17 is slidably connected to a piston rod 19. The opposite sides of the two piston rods 19 are fixed to each other by a mounting block 20, and the mounting block 20 is the moving end of the telescope 8.

[0051] The connecting pipe 1 3 is connected to the top of the storage box 5 , and the connecting pipe 2 6 is connected to the bottom of the storage box 5 .

[0052] When the circulation pump 7 is started, a relatively cool water source can be drawn from the bottom of the storage box 5, and then the water source is heated by heat exchange in the solar collector 1, and then enters the storage box 5 from the top of the storage box 5. At the same time, the two heat exchange tubes 16 will respectively exchange heat with the incoming water source and the drawn water source, so that the internal temperatures of the two heat exchange tubes 16 are respectively consistent with the incoming water source and the drawn water source. On this basis, the gas in the two heat exchange tubes 16 will have different volumes due to the thermal expansion and contraction effect, so that the mounting block 20 is moved through the air pressure induction of the piston 18, and finally the effect is achieved that the greater the temperature difference, the lower the mounting block 20 is, and the smaller the temperature difference, the higher the mounting block 20 is.

[0053] This device, by configuring the expansion joint 8 as a combination of heat exchange tubes 16, pistons 18, mounting blocks 20 and other components, and coordinating the inlet and outlet positions of the storage tank 5, can utilize the thermal expansion and contraction of the gas to achieve automatic adaptive power control of the circulation pump 7.

[0054] Furthermore, by setting the water inlet and outlet positions of the storage box 5, the device allows hot water to enter from the top and cold water to flow out from the bottom, thereby preventing the hot water from being immediately drawn out for circulation again after circulation, and the small temperature difference between the hot water and the temperature of the solar collector 1 causes low heat collection efficiency.

[0055] In order to solve the problem of water discharge and water replenishment; Figure 5 As shown, the other side of the storage box 5 is connected to a two-way pump 22 through a three-way pipe 21, and the other end of the two-way pump 22 is connected to a two-position three-way valve 23, and the other two interfaces of the two-position three-way valve 23 are respectively connected to the water use end and the water supply end.

[0056] When using water, the position of the two-position three-way valve 23 can be controlled to connect the three-way pipe 21 to the water use end, and then the two-way pump 22 can be started to supply hot water. When replenishing water, the two-position three-way valve 23 can be controlled to connect the three-way pipe 21 to the water supply end, and the two-way pump 22 can be started in reverse to pump water for replenishment.

[0057] In order to solve the problem of liquid level sensing; Figure 6 As shown, a liquid level sensor is provided on the bottom inner wall of the storage box 5, and the liquid level sensor includes a cylinder shell 24 fixed to the storage box 5, a piston sleeve 25 slidably connected to the inner wall of the cylinder shell 24, and an elastic air bag 27 connected and communicated with the opening of the cylinder shell 24.

[0058] The piston sleeve 25 is internally fixedly sealed with an electrode sheet three 39, and the top and middle inner walls of the cylinder shell 24 are respectively embedded with an electrode sheet one 26 and an electrode sheet two 29 that cooperate with the electrode sheet three 39, and the electrode sheet one 26, the electrode sheet two 29, and the electrode sheet three 39 are connected to an alarm.

[0059] The inner wall of the electrode sheet three 39 is fixedly and sealedly embedded with a contact electrode 28, and the bottom inner wall of the cylinder shell 24 is fixed with a spring electrode 30, the spring electrode 30 can contact and cooperate with the contact electrode 28, and when the piston sleeve 25 contacts the electrode sheet one 26, the contact electrode 28 and the spring electrode 30 are not in contact, and the contact electrode 28 and the spring electrode 30 are connected to the power supply circuit of the circulation pump 7.

[0060] When the storage box 5 is full of water, the water will exert pressure on the elastic airbag 27, causing the elastic airbag 27 to shrink, and the gas on the inner wall of the elastic airbag 27 is discharged into the cylinder shell 24, squeezing the piston sleeve 25, the contact electrode 28, and the electrode sheet 3 39 to descend, and the electrode sheet 3 39 contacts the electrode sheet 2 29, and the alarm sends a full water alarm. When the water source is gradually used to the lowest liquid level, the elastic airbag 27 is not subjected to water pressure. At this time, due to the elastic recovery of the elastic airbag 27 itself, the gas in the cylinder shell 24 is drawn into the elastic airbag 27, and the piston sleeve 25, the contact electrode 28, and the electrode sheet 3 39 move up, so that the electrode sheet 3 39 contacts the electrode sheet 1 26, and the alarm sends a water shortage alarm. At the same time, the spring electrode 30 and the contact electrode 28 cannot contact each other, and the circulating pump 7 cannot be started.

[0061] The device, through targeted design of the liquid level sensor, can, on the one hand, respectively send out a full water alarm and a water shortage alarm; on the other hand, it can also prevent energy waste caused by idling when the circulation pump 7 starts up when there is a lack of water, based on the cooperation between the contact electrode 28 and the spring electrode 30.

[0062] When the present embodiment is in use, the solar thermal collector 1 can absorb solar radiation and generate heat energy. When the circulation pump 7 is started, the water source in the storage tank 5 can be transported to the solar thermal collector 1. The water source flows away the heat energy generated by the solar thermal collector 1, and then enters the storage tank 5 again after being filtered by the filter 2, so as to realize the heat energy collection and storage of the water circulation. At the same time, relative to the storage tank 5, when the difference between the inlet water temperature of the connecting pipe 1 3 and the outlet water temperature of the connecting pipe 2 6 is large, it means that the heat generation efficiency of the solar thermal collector 1 is large. At this time, the telescopic device 8 controls the movement of the electrode head 13, thereby changing the position where the electrode head 13 contacts the secondary coil 12, and increasing the secondary coil 12. The access coil increases the power of the circulation pump 7 and increases the water circulation speed. When the difference between the inlet water temperature of the connecting pipe 1 3 and the outlet water temperature of the connecting pipe 2 6 is small, the power of the circulation pump 7 is reduced and the water circulation speed is reduced. When the circulation pump 7 is started, a relatively cool water source can be drawn from the bottom of the storage tank 5, and then the water source enters the storage tank 5 from the top of the storage tank 5 after being heated by the heat exchange of the solar collector 1. At the same time, the two heat exchange tubes 16 will respectively exchange heat with the incoming water source and the drawn water source, so that the internal temperature of the two heat exchange tubes 16 is respectively consistent with the incoming water source and the drawn water source. On this basis, the internal temperature of the two heat exchange tubes 16 is The gas will have different volumes due to the thermal expansion and contraction effect, so the mounting block 20 is moved through the air pressure induction of the piston 18, and finally the effect of the mounting block 20 being moved lower when the temperature difference is greater and the mounting block 20 being moved higher when the temperature difference is smaller. When using water, the three-way pipe 21 can be connected to the water-using end by controlling the position of the two-position three-way valve 23, and then the two-way pump 22 can be started to supply hot water. When replenishing water, the two-position three-way valve 23 can be controlled to connect the three-way pipe 21 to the water supply end, and the two-way pump 22 can be started in reverse to pump water and replenish water. When the storage box 5 is full of water, the water will exert pressure on the elastic airbag 27, thereby causing the elastic airbag 27 to shrink. The gas on the inner wall of 7 is discharged into the cylinder shell 24, squeezing the piston sleeve 25, the contact electrode 28, and the electrode sheet 3 39 to descend, and the electrode sheet 3 39 contacts the electrode sheet 2 29, and the alarm sends a full water alarm. When the water source is gradually used to the lowest liquid level, the elastic airbag 27 is not subjected to water pressure. At this time, due to the elastic recovery of the elastic airbag 27 itself, the gas in the cylinder shell 24 is drawn into the elastic airbag 27, and the piston sleeve 25, the contact electrode 28, and the electrode sheet 3 39 move up, so that the electrode sheet 3 39 contacts the electrode sheet 1 26, and the alarm sends a water shortage alarm. At the same time, the spring electrode 30 and the contact electrode 28 cannot contact each other, and the circulating pump 7 cannot be started.

[0063] Embodiment 2:

[0064] A thermal energy collection and storage device based on a solar thermal collector, such as Figure 1 , 7As shown in Figure 8, in order to solve the filtering problem, this embodiment makes the following improvements on the basis of Example 1: the filter 2 includes an outer shell 31 and end covers 32 respectively fixed to the two ends of the outer shell 31, a cotton filter element 36 is fixed to the inner wall of the outer shell 31, and a curved surface slip ring 33 is slidably connected to the inner wall of the outer shell 31. A plurality of through holes 34 are provided on the inner wall of the curved surface slip ring 33, and an elastic rod 40 is fixed to the other end of the curved surface slip ring 33, and the other end of the elastic rod 40 is fixed to the side wall of one of the end covers 32. A dirt collecting box 35 is provided at the bottom of the outer shell 31 on the side of the cotton filter element 36 away from the curved surface slip ring 33.

[0065] The inner wall of the outer shell 31 is provided with a plurality of groups of limiting members, and the limiting members include an arc head limiting rod 38 limitedly matched with the arc surface slip ring 33 and a spring 2 37 connected to the arc head limiting rod 38 and the outer shell 31 .

[0066] When the present embodiment is in use, during the water circulation process, water will enter from the side of the cotton filter element 36 away from the arc surface slip ring 33, and then flow out through the through hole 34 after being filtered by the cotton filter element 36. During this process, since the arc surface slip ring 33 has flow resistance to water, the arc surface slip ring 33 itself will be moved by the reaction force of the water flow. While the elastic rod 40 undergoes elastic deformation, the arc surface slip ring 33 passes over the limiter. When the water circulation is completed, the reaction force of the water flow disappears, so that the arc surface slip ring 33 is reset by the elastic force of the elastic rod 40. At this time, on the one hand, the arc surface slip ring 33 will hit the cotton filter element 36 to generate vibration, and on the other hand, the cotton filter element 36 will bulge outward to form an arc surface, unfold its folds, separate the debris, and the debris falls into the dirt collecting box 35 for storage due to gravity.

[0067] The device can self-clean the cotton filter element 36 by specially designing the filter 2. The power of self-cleaning comes from the water flow and does not need to be controlled separately. In addition, during reverse impact vibration cleaning, the pleats of the cotton filter element 36 can be opened to increase the cleaning efficiency.

[0068] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A heat energy collection and storage device based on a solar thermal collector, comprising a connecting pipe 1 (3) connected to a water outlet of the solar thermal collector (1) and a connecting pipe 2 (6) connected to a water inlet of the solar thermal collector (1), wherein the connecting pipe 1 (3) and the connecting pipe 2 (6) are connected to the same storage box (5), characterized in that: The connecting pipe 1 (3) is provided with a filter (2), the connecting pipe 2 (6) is provided with a circulation pump (7), and the side wall of the storage box (5) is provided with a circulation speed control unit (4) for controlling the power of the circulation pump (7); The circulation speed control unit (4) comprises an iron core (10), a primary coil (11) and a secondary coil (12); the iron core (10) is fixed to the side wall of the storage box (5) through an insulating bracket (9); the primary coil (11) and the secondary coil (12) are respectively wound around the outer wall of the iron core (10); the primary coil (11) is externally connected to an AC power source; the side wall of the secondary coil (12) is in contact with and electrically connected to an electrode head (13); the electrode head (13) is connected to the moving end of the telescopic device (8) through a compensating connector; One end of the secondary coil (12) and the electrode head (13) are electrically connected to two input terminals of the circulation pump (7) respectively.

2. A thermal energy collection and storage device based on a solar thermal collector according to claim 1, characterized in that: The compensating connecting member comprises a guide slide bar (14) and a spring one (15), the electrode head (13) is fixed to one end of the guide slide bar (14), the other end of the guide slide bar (14) is slidably connected to the telescopic device (8), and the outer wall of the guide slide bar (14) is buckled with the spring one (15), and the other end of the spring one (15) is buckled to the side wall of the telescopic device (8).

3. A thermal energy collection and storage device based on a solar thermal collector according to claim 1, characterized in that: The telescopic device (8) comprises two heat exchange tubes (16) respectively located inside the upper part of the storage box (5) and inside the lower part of the storage box (5). The opening of each heat exchange tube (16) is connected to a cylinder (17). The cylinder (17) is fixed to the side wall of the storage box (5) by bolts, and the inner wall of the cylinder (17) is slidably connected to a piston rod (19). The opposite sides of the two piston rods (19) are fixed to each other by a mounting block (20).

4. A thermal energy collection and storage device based on a solar thermal collector according to claim 1, characterized in that: The connecting pipe 1 (3) is connected to the top of the storage box (5), and the connecting pipe 2 (6) is connected to the bottom of the storage box (5).

5. The thermal energy collection and storage device based on a solar thermal collector according to claim 1, characterized in that: The other side of the storage box (5) is connected to a two-way pump (22) via a three-way pipe (21), the other end of the two-way pump (22) is connected to a two-position three-way valve (23), and the other two interfaces of the two-position three-way valve (23) are respectively connected to the water use end and the water supply end.

6. A thermal energy collection and storage device based on a solar thermal collector according to claim 1, characterized in that: A liquid level sensor is provided on the inner wall of the bottom of the storage box (5), and the liquid level sensor comprises a cylinder shell (24) fixed to the storage box (5), a piston sleeve (25) slidably connected to the inner wall of the cylinder shell (24), and an elastic air bag (27) connected to and communicated with the opening of the cylinder shell (24).

7. A thermal energy collection and storage device based on a solar thermal collector according to claim 6, characterized in that: The piston sleeve (25) is internally fixedly sealed with an electrode sheet three (39), and the top and middle inner walls of the cylinder shell (24) are respectively embedded with an electrode sheet one (26) and an electrode sheet two (29) that cooperate with the electrode sheet three (39), and the electrode sheet one (26), the electrode sheet two (29), and the electrode sheet three (39) are connected to an alarm.

8. A thermal energy collection and storage device based on a solar thermal collector according to claim 7, characterized in that: The inner wall of the electrode sheet three (39) is fixedly and sealedly embedded with a contact electrode (28), and the bottom inner wall of the cylinder shell (24) is fixed with a spring electrode (30), which can be in contact with and cooperate with the contact electrode (28).

9. A thermal energy collection and storage device based on a solar thermal collector according to claim 8, characterized in that: When the piston sleeve (25) contacts the electrode sheet (26), the contact electrode (28) and the spring electrode (30) are not in contact, and the contact electrode (28) and the spring electrode (30) are connected to the power supply circuit of the circulation pump (7).

10. The thermal energy collection and storage device based on a solar thermal collector according to claim 1, characterized in that: The filter (2) comprises an outer shell (31) and end covers (32) respectively fixed to both ends of the outer shell (31); a cotton filter core (36) is fixed to the inner wall of the outer shell (31); a curved surface slip ring (33) is slidably connected to the inner wall of the outer shell (31); a plurality of through holes (34) are provided on the inner wall of the curved surface slip ring (33); an elastic rod (40) is fixed to the other end of the curved surface slip ring (33); the other end of the elastic rod (40) is fixed to the side wall of one of the end covers (32); a dirt collecting box (35) is provided at the bottom of the outer shell (31) on the side of the cotton filter core (36) away from the curved surface slip ring (33); The inner wall of the outer shell (31) is provided with a plurality of groups of limiting members, and the limiting members include an arc head limiting rod (38) limitedly matched with the arc surface slip ring (33) and a second spring (37) connected to the arc head limiting rod (38) and the outer shell (31).

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