Heat storage mechanism and complementary type solid electric heat storage unit and method for house heat supply

Abstract

The invention belongs to the technical field of solid electric heat storage, particularly relates to a heat storage mechanism and a complementary solid electric heat storage unit and method for house heat supply, and aims to solve the problems that the temperature of heating water is not up to the standard due to insufficient heating of low-temperature air, and external air enters during maintenance. The unit comprises a heat storage mechanism, wherein a resistance heating pipe and a snakelike heating channel are arranged in the heat storage mechanism; a protective shell I is arranged in the heat preservation chamber, and a heat accumulator and a protective plate are arranged in the heat preservation chamber; the heating structure comprises a heat exchanger, an air inlet pipe, an air outlet pipe and a circulating fan; the switching structure comprises a Z-shaped plate, an air guide pipe and a sealing plate, the sealing plate is driven to move through an electric push rod and the like, and the air heating time is prolonged; the protective shell is provided with a heat preservation layer. The unit can effectively heat low-temperature air, avoids substandard temperature of heating water, prevents external air from entering during maintenance, reduces heat dissipation, and is suitable for house heating.

Description

Technical Field

[0001] This invention relates to the field of solid-state electric thermal energy storage technology, and in particular to a thermal energy storage mechanism and a complementary solid-state electric thermal energy storage unit and method for residential heating. Background Technology

[0002] Thermal energy storage technology, as an effective energy utilization method, can convert electrical energy or other forms of energy during off-peak periods into heat energy for storage, and release the heat energy for heating when needed. Solid-state electric thermal energy storage technology has advantages such as high heat storage density, low heat loss, and long service life, and is gradually becoming a research hotspot in the field of residential heating.

[0003] Existing solid-state electric thermal energy storage units still have the following drawbacks: 1. In the existing technology, air is heated by the heat storage body and then enters the heat exchanger to heat the water. The heated water is then guided to the underfloor heating pipes of the house for heating. However, when the temperature of the air after heat exchange is low, the low temperature cannot be raised to the corresponding height during the process of passing through the heat storage body. This results in insufficient heat of the air entering the heat exchanger, which makes it impossible for the heating water temperature to meet the standard and affects the heating effect of the house. 2. When the heat storage medium needs to be repaired or replaced, outside air enters the heating and insulation box, and small particulate impurities such as dust carried by the outside air enter the heating and insulation box, interfering with the normal operation of the system and reducing the heating efficiency. Summary of the Invention

[0004] This invention aims to solve the technical problems of "insufficient heating of low-temperature air leading to substandard heating water temperature" and "intrusion of external air and impurities into the system during maintenance" in existing solid-state electric thermal storage units. It also aims to reduce heat loss to improve energy efficiency, providing a thermal storage mechanism and a complementary solid-state electric thermal storage unit and method for residential heating. This invention innovates on the core pain points of existing solid-state electric thermal storage units, including poor heating effect due to low return air temperature resulting in unsatisfactory heating water temperature, frequent system failures caused by external air and impurities infiltration during maintenance, and resource waste due to heat loss. To meet these needs, this invention introduces a novel thermal storage mechanism and a complementary solid-state electric thermal storage unit and method suitable for residential heating. Through the fine optimization of thermal storage components and the integration of an intelligent switching system, it creates a highly efficient and reliable residential heating solution. The innovative approach stems from a deep analysis of the entire solid-state electric thermal storage chain: initially focusing on the bottlenecks of excessively short air heating channels and uneven heat conduction, a thermal storage module dominated by a serpentine heating channel was constructed through material selection and structural testing. Subsequently, by combining real-time changes in return air and maintenance scenarios, a matching unit system was developed to ensure perfect linkage between heating enhancement and protective isolation, thereby fully leveraging the complementary advantages between components and avoiding the drawbacks of a single module dragging down the overall performance in traditional units. This approach emphasizes a complete cycle from problem identification to solution iteration, from dynamic heat flow simulation to equipment fine-tuning, forging a practical and efficient technical framework.

[0005] Specifically, the shortcomings of traditional units were first examined, identifying insufficient heating time due to straight channels and susceptibility to contamination due to the lack of isolation design. To address this, a ceramic matrix composite material was selected to construct the heat storage body, organically integrated with resistance heating tubes and a serpentine heating track to create a highly efficient heat storage environment: the uniformly distributed resistance heating tubes provide a constant heat source, while the tortuous shape of the serpentine heating track logically expands the airflow path, promoting comprehensive heat transfer; simultaneously, protective plates and Z-shaped plates work together to divide the chambers, achieving precise airflow guidance. The complementary effects of each element are evident: the heat storage body material enhances the durability of heat storage, the serpentine track and switching module work together to achieve flexible control of the heating path, and the isolation system automatically closes the channels during maintenance, preventing contamination. Through repeated process simulations (such as optimizing chamber layout and airflow guidance), the optimal component combination was determined, ensuring the unit's superior performance in balancing heating enhancement and protection, while seamlessly connecting to the residential underfloor heating network, reducing external dependence.

[0006] Based on the aforementioned characteristics, a customized thermal storage unit was developed to meet the off-peak electricity usage and temperature fluctuation requirements in the residential sector. The core of the unit lies in the precise control of air heating, circulating heating, and maintenance protection, avoiding design flaws that could diminish component performance.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: The heat storage mechanism of the present invention includes a heat storage body made of ceramic matrix composite material, which has high temperature stability and high heat storage capacity; multiple resistance heating tubes are fixedly inserted through the heat storage body, and the resistance heating tubes are connected to a power source. When energized, the electrical energy is converted into heat energy to power the heat storage body; multiple serpentine heating channels are provided in the heat storage body. The serpentine structure prolongs the residence time of air in the heat storage body, ensuring sufficient heat exchange between the air and the heat storage body, thus solving the fundamental problem of "insufficient air heating".

[0008] In one possible design, the heat storage body is made of a ceramic matrix composite material.

[0009] A complementary solid-state electric thermal storage unit for residential heating, comprising the aforementioned thermal storage mechanism, further comprising: An insulated room built on one side of a residential building, wherein a protective shell I is installed inside the insulated room, and the heat storage body is disposed inside the protective shell I; Two protective plates are fixed inside the protective shell I and respectively attached to both sides of the heat storage body. The protective plates are provided with multiple through holes I that are connected to the serpentine heating channel. Two Z-shaped plates are fixed inside the heat storage body, and one side of each Z-shaped plate is connected to the corresponding protective plate, and the other side is connected to the inner wall of the protective shell I, so that the interior of the protective shell I is divided into cavity I, cavity II, cavity III and cavity IV by the Z-shaped plates and the protective plates; A heating structure for using the heat storage body to release heat energy to heat a dwelling; A switching structure is used to extend the flow path and time of air within the serpentine heating channel when the return air temperature is low.

[0010] In one possible design, the heating structure includes: The circulating fan is fixed to one side of the protective housing I via a frame; An air inlet pipe and an air outlet pipe are respectively fixed to both sides of the protective housing I. One end of the air inlet pipe is connected to the air outlet of the circulating fan, and the other end is connected to the cavity I. The heat exchanger has its inlet end of the hot fluid pipeline connected to one end of the outlet pipe, and the outlet pipe is connected to the cavity IV. The return air duct connects the outlet end of the hot fluid pipeline of the heat exchanger to the inlet end of the circulating fan. The liquid outlet pipe and the liquid return pipe are respectively connected to the liquid outlet end and the liquid inlet end of the cold fluid pipeline of the heat exchanger, and are used to connect to the underfloor heating pipeline in the house. When the circulating fan is started, it drives the air to circulate between the protective shell I and the heat exchanger. When the air flows through the serpentine heating channel, it is heated to form hot air. The hot air exchanges heat with the water from the underfloor heating pipes in the heat exchanger. Compared with a straight channel, the serpentine heating channel can extend the air heating time.

[0011] In one possible design, the switching structure includes: An air duct is fixed to one side of the protective housing I, with its top end communicating with the cavity III and its bottom end communicating with the cavity II; Multiple through holes are provided in the two Z-shaped plates to connect cavity I and cavity III, and cavity IV and cavity II; Two sealing plates I are slidably connected to the two Z-shaped plates respectively, and are used to seal the through holes; Two sealing plates II are slidably connected to the inner walls of the cavity III and the cavity II, respectively, to seal the air guide tube; A connecting rod is used to fix the adjacent closed plate I and closed plate II together, so that the two can move synchronously. A drive assembly is used to synchronously drive the two enclosed plates I to move; When the drive assembly pushes the sealing plate I to close the through hole and drives the sealing plate II to release the seal on the air guide pipe, the air enters the serpentine heating channel on one side of the cavity I for initial heating, then enters the cavity III through the cavity II and the air guide pipe, and then enters the serpentine heating channel on the other side for secondary heating.

[0012] In one possible design, the driving component includes: An electric push rod is fixed above the protective housing I; Hydraulic cylinder I is fixed to the top of the protective housing I, and a piston plate connected to the output shaft of the electric push rod is slidably sealed inside it; Two hydraulic cylinders II are fixed to both sides of the protective housing I, respectively; A conduit connects the hydraulic cylinder I to the two hydraulic cylinders II; The piston rod is slidably disposed inside the hydraulic cylinder II, and one end extends into the protective housing I and is connected to the sealing plate I through a fixing plate; The electric push rod pushes the piston plate to move, and the piston rod is driven to move by hydraulic oil, thereby driving the closing plate I and the closing plate II to move.

[0013] The secondary heating switching structure solves the problem of insufficient heating, and the multi-layer insulation structure reduces heat loss. The two work together to improve the heating effect; the maintenance isolation mechanism ensures the long-term stable operation of the system.

[0014] The method of using a complementary solid-state electric thermal storage unit for residential heating in this application includes the following steps: S1, Heat Storage Stage: During off-peak hours, the control resistor heating tube is energized to generate heat and store thermal energy in the heat storage body.

[0015] S2, Heating Stage: Start the circulating fan to circulate the air between the protective shell I, the air outlet pipe, the heat exchanger, and the return air pipe; the air is heated into hot air as it flows through the serpentine heating channel in the heat storage body. The hot air heats the underfloor heating return water in the heat exchanger, and the heated water is supplied to the underfloor heating system through the liquid outlet pipe.

[0016] S3. Low Temperature Compensation Control: When temperature sensor I detects that the circulating air temperature is lower than the set value, it controls the electric push rod to move, and pushes the sealing plate I to close the through hole through hydraulic transmission, while simultaneously opening the air guide pipe with sealing plate II; the air flows through cavity I, cavity II, air guide pipe and cavity III in sequence, and is reheated in the heat storage body to increase the air temperature.

[0017] S4. Inspection and isolation mechanism: When disassembling the heat storage body, the fixed cover plate releases the constraint on the partition plate, and the spring pushes the partition plate to reset, so that the through hole I and through hole II are misaligned to achieve a seal; during installation, the fixed cover plate recompresses the spring to align each through hole and restore the ventilation function.

[0018] Beneficial effects: In this invention, the piston rod pushes the sealing plate I and sealing plate II to move. Sealing plate I seals the through hole, and sealing plate II releases the seal on the air guide pipe. At this time, air enters the cavity I through the air inlet pipe and flows in the corresponding serpentine heating channel in the heat storage body for preliminary heating. The heated air enters the cavity III through the cavity II and the air guide pipe, and then flows in the serpentine heating channel connected to the cavity III for secondary heating. This increases the heating time of the air in the heat storage body, thereby heating the low-temperature air to the corresponding temperature and effectively heating the water entering the heat exchanger, avoiding insufficient air heat causing the heating water temperature to fail to meet the standard. In this invention, the heat storage body is pulled out of the protective shell I by fixing the cover plate. The fixed cover plate releases the pressure on the partition plate, and the elastic force of the spring pushes the partition plate to move outward and reset. At this time, the through hole I and the through hole II are misaligned, and the partition plate can seal the through hole I, thereby preventing outside air from entering the cavity I, cavity II, cavity III and cavity IV during the process of removing the heat storage body. In this invention, resistance heating elements are evenly distributed within the heat storage body, enabling rapid conversion of electrical energy into heat energy and ensuring uniform heat absorption by the heat storage body 1. The serpentine heating channel design increases the airflow path within the heat storage body, allowing for thorough heat exchange between the air and the heat storage body 1, thereby improving air heating efficiency. In complementary solid-state electric thermal energy storage units for residential heating, a circulating fan circulates air between the protective shell I and the heat exchanger, continuously and stably providing hot water to the underfloor heating pipes within the residence, achieving highly efficient heating.

[0019] In this invention, by switching structures and using an electric push rod to drive the closed plate to move, the air is reheated within the heat storage body, increasing the heating time and effectively heating the low-temperature air to a suitable temperature. This ensures that the water entering the heat exchanger is fully heated, preventing the heating water temperature from falling below the standard. Simultaneously, a fixed cover and partition are installed on the protective shell. When the heat storage body is removed, the partition, under the action of a spring, seals the through-hole, preventing impurities from the outside air from entering and ensuring the normal operation of the system. Furthermore, the protective shell and protective plate are equipped with an insulation layer to reduce heat loss, improve energy utilization efficiency, increase low-temperature efficiency, and reduce pollution. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of a heat storage mechanism provided by the present invention; Figure 2 A three-dimensional cross-sectional view of the heat storage body of a heat storage mechanism provided by the present invention; Figure 3 A three-dimensional structural schematic diagram of the complementary solid-state electric thermal storage unit for residential heating provided by the present invention; Figure 4 A three-dimensional cross-sectional view of the insulation chamber of the complementary solid-state electric thermal storage unit for residential heating provided by the present invention; Figure 5 A three-dimensional cross-sectional view of the protective casing I of the complementary solid-state electric thermal storage unit for residential heating provided by the present invention; Figure 6 A three-dimensional structural schematic diagram of the heat exchanger, return air duct, air outlet duct, return flow duct, and liquid outlet duct of the complementary solid-state electric thermal energy storage unit for residential heating provided by the present invention; Figure 7 This is a cross-sectional structural schematic diagram of the protective casing I of the complementary solid-state electric thermal energy storage unit for residential heating provided by the present invention; Figure 8 This is a three-dimensional exploded structural diagram of the protective shell I and the protective shell II of the complementary solid-state electric thermal storage unit for residential heating provided by the present invention. Figure 9This is a three-dimensional exploded structural diagram of the air duct, Z-shaped plate, and sealing plate II of the complementary solid-state electric thermal storage unit for residential heating provided by the present invention. Figure 10 A cross-sectional view of hydraulic cylinder I and hydraulic cylinder II for a complementary solid-state electric thermal storage unit for residential heating provided by the present invention; Figure 11 This is a cross-sectional structural diagram of the protective shell I and the insulation layer of the complementary solid-state electric thermal storage unit for residential heating provided by the present invention. Figure 12 This is a cross-sectional view of the protective casing I and the protective plate of the complementary solid-state electric thermal energy storage unit for residential heating provided by the present invention. Figure 13 for Figure 12 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Heat storage body; 2. Resistance heating element; 3. Serpentine heating track; 4. Residential building; 5. Insulation room; 6. Protective shell I; 7. Protective plate; 8. Cavity I; 9. Cavity II; 10. Cavity III; 11. Cavity IV; 12. Circulating fan; 13. Inlet pipe; 14. Outlet pipe; 15. Solenoid valve I; 16. Heat exchanger; 17. Return air duct; 18. Temperature sensor I; 19. Liquid outlet pipe; 20. Temperature sensor II; 21. Flow control valve; 22. Solenoid valve II; 23. Return pipe; 24. Air guide pipe; 25. Through hole; 26. Sealing plate I; 27. Connecting rod; 28. Sealing plate II; 29. ​​Fixing plate; 30. Hydraulic cylinder I; 31. Electric push rod; 32. Piston plate; 33. Hydraulic cylinder II; 34. Piston rod; 35. Guide tube; 36. Z-shaped plate; 37. Protective shell II; 38. Insulation layer; 39. Through hole I; 40. Sliding groove; 41. Partition plate; 42. Spring; 43. Through hole II; 44. Fixing cover plate. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0023] In one embodiment: Refer to Figure 1 and Figure 2A heat storage mechanism includes a heat storage body 1 made of ceramic matrix composite material. Ceramic matrix composite material has good thermal stability and heat storage performance, maintaining structural stability for extended periods in high-temperature environments and effectively absorbing and storing heat. Multiple resistance heating tubes 2 are fixedly inserted through the heat storage body 1, evenly distributed within it, and their ends are connected to an external power source via sealed joints. When the power is switched on, the resistance heating tubes 2 generate heat, converting electrical energy into heat energy, which the heat storage body 1 absorbs for heat storage.

[0024] Reference Figure 1 and Figure 2 The heat storage body 1 is also provided with multiple serpentine heating channels 3. The serpentine heating channels 3 have a continuous S-shaped curved structure and are evenly distributed inside the heat storage body 1. The serpentine heating channels 3 can increase the air flow path in the heat storage body 1, so that when the air flows through the serpentine heating channels 3, it has enough time to exchange heat with the heat storage body 1, thereby fully absorbing the heat in the heat storage body 1.

[0025] Reference Figures 3-5 The complementary solid-state electric thermal energy storage unit for residential heating includes the aforementioned thermal energy storage mechanism, and also includes an insulation chamber 5 built on one side of the residential building 4. The insulation chamber 5 adopts a brick-concrete structure, and the interior of the walls is filled with insulation material, such as polystyrene foam board, to reduce heat loss. A protective shell I6, which is rectangular in shape, is fixedly installed inside the insulation chamber 5.

[0026] Reference Figure 2 and Figure 5 The heat storage body 1 is installed inside the protective shell I6. Two protective plates 7 are fixed inside the protective shell I6, and the two protective plates 7 are respectively attached to both sides of the heat storage body 1. The protective plates 7 are made of aluminum silicate fiber cotton, which has good heat insulation performance and can effectively reduce the heat transfer from the heat storage body 1 to the surrounding environment. Multiple through holes I39 are provided inside the protective plates 7. The diameter of the through holes I39 matches the inlet diameter of the serpentine heating channel 3, and the through holes I39 are connected to the serpentine heating channel 3 to allow air to flow through the serpentine heating channel 3 for heating.

[0027] Reference Figure 5 and Figure 6The heating structure is used to release heat energy from the heat storage body 1 to heat the interior of the residence 4. The heating structure includes a heat exchanger 16 mounted on one side of the protective shell I6. An inlet pipe 13 and an outlet pipe 14 are fixed to both sides of the protective shell I6, respectively. Both the inlet pipe 13 and the outlet pipe 14 are made of stainless steel, and their diameter is determined according to the required airflow, generally between 50-100 mm. A circulating fan 12 is fixed to one side of the protective shell I6 via a frame. The circulating fan 12 is a centrifugal fan, characterized by large airflow and stable pressure. The outlet end of the circulating fan 12 is fixedly connected to one end of the inlet pipe 13 via a connecting pipe, and one end of the outlet pipe 14 is fixedly connected to the inlet end of the hot fluid pipeline of the heat exchanger 16 via a connecting flange. A return air pipe 17 is fixedly connected to the outlet end of the hot fluid pipeline of the heat exchanger 16 via a flange. The end of the return air pipe 17 away from the heat exchanger 16 is fixedly connected to the outlet end of the circulating fan 12.

[0028] When the circulating fan 12 starts, the air inside the protective casing I6 enters the circulating fan 12 through the inlet pipe 13. After being pressurized by the circulating fan 12, it enters the heat exchanger 16 through the outlet pipe 14. Inside the heat exchanger 16, the hot air exchanges heat with the cold fluid (water in the heating pipes of the residential building 4), causing the hot air temperature to decrease and the water temperature to increase. The air after heat exchange flows back into the protective casing I6 through the return air pipe 17, and then flows through the serpentine heating channel 3 for heating again, forming an air circulation.

[0029] Reference Figure 5 and Figure 6 A liquid outlet pipe 19 is fixed to the outlet end of the cold fluid pipeline of heat exchanger 16 via a flange. One end of the liquid outlet pipe 19 is connected to the inlet end of the underfloor heating pipeline in residence 4, used to inject the hot water exchanged in heat exchanger 16 into the underfloor heating pipeline. A return pipe 23 is fixed to the inlet end of the cold fluid pipeline of heat exchanger 16 via a flange. The end of the return pipe 23 away from heat exchanger 16 is connected to the outlet end of the underfloor heating pipeline in residence 4, allowing the water in the underfloor heating pipeline to circulate. A solenoid valve II 22, a flow control valve 21, and a temperature sensor II 20 are installed on the liquid outlet pipe 19. The solenoid valve II 22 is used to control the opening and closing of the liquid outlet pipe 19, the flow control valve 21 is used to adjust the flow rate of hot water in the liquid outlet pipe 19, and the temperature sensor II 20 is used to detect the temperature of the heated water in heat exchanger 16 and transmit the temperature signal to the control system so that the heating parameters can be adjusted according to actual needs. A solenoid valve I15 is provided on the air outlet pipe 14 to control the opening and closing of the air outlet pipe 14.

[0030] Reference Figure 5 and Figure 7The switching structure is used to increase the heating time of the air in the serpentine heating channel 3 when the air temperature returning to the protective housing I6 is low. The switching structure includes two Z-shaped plates 36 fixed inside the protective housing I6. The sides of the two Z-shaped plates 36 that are close to each other are fixedly connected to corresponding protective plates 7, and the sides of the two Z-shaped plates 36 that are far apart from each other are fixedly connected to the inner wall of one side of the corresponding protective housing I6. Through the Z-shaped plates 36 and the protective plates 7, cavities I8, II9, III10, and IV11 are formed inside the protective housing I6. A temperature sensor I18 is installed on the return air duct 17 to detect the temperature of the return air.

[0031] Reference Figure 5 and Figures 7-10 The switching structure also includes an air guide pipe 24 fixed to one side of the protective shell I6. The top end of the air guide pipe 24 is fixedly connected to cavity III10, and the bottom end of the air guide pipe 24 is fixedly connected to cavity II9, for injecting preheated hot air from cavity II9 into cavity III10. One end of the air inlet pipe 13 is fixedly connected to cavity I8, and one end of the air outlet pipe 14 is fixedly connected to cavity IV11. Multiple through holes 25 are provided in both Z-shaped plates 36, and cavity I8 and cavity III10, and cavity IV11 and cavity II9 are connected through these through holes 25. A sealing plate I26 is slidably connected to the opposite side of each of the two Z-shaped plates 36, for sealing the through holes 25. A sealing plate II28 is slidably connected to the inner wall of one side of cavity III10 and cavity II9, for sealing the air guide pipe 24. The two closed plates II28 are fixedly connected to the adjacent closed plate I26 by a connecting rod 27, so that the closed plate I26 and the closed plate II28 can move synchronously.

[0032] Reference Figure 7 , Figure 9 and Figure 10 A hydraulic cylinder I30 is fixed to the top of the protective housing I6, and a piston plate 32 is slidably connected inside the hydraulic cylinder I30. An electric push rod 31 is fixed to the top of the hydraulic cylinder I30, and the output shaft of the electric push rod 31 extends into the hydraulic cylinder I30 and is fixedly connected to the top of the piston plate 32. Hydraulic cylinders II33 are fixed to both sides of the protective housing I6, and conduits 35 are fixedly connected to both sides of the hydraulic cylinder I30, with the conduits 35 located below the piston plate 32. The ends of the two conduits 35 away from the hydraulic cylinder I30 are fixedly connected to the corresponding hydraulic cylinder II33. A piston rod 34 is slidably connected inside each of the two hydraulic cylinders II33, and one end of each piston rod 34 extends slidably into the cavity III10 and cavity II9 respectively, and a fixing plate 29 is fixed to each. The two fixing plates 29 are fixedly connected to two sealing plates I26 respectively.

[0033] When temperature sensor I18 detects that the return air temperature is lower than the set value, the control system activates electric push rod 31. The output shaft of electric push rod 31 pushes piston plate 32 downward, injecting hydraulic oil from hydraulic cylinder I30 into two hydraulic cylinders II33. Under the action of the hydraulic oil, piston rod 34 pushes sealing plate I26 and sealing plate II28 to move. Sealing plate I26 closes the through hole 25, and sealing plate II28 releases the seal on air guide pipe 24. At this time, air enters cavity I8 through air inlet pipe 13 and flows through the corresponding serpentine heating channel 3 in heat storage body 1 for initial heating. The heated air then enters cavity III10 through cavity II9 and air guide pipe 24, and then flows through the serpentine heating channel 3 connected to cavity III10 for secondary heating. This increases the heating time of the air in heat storage body 1, thereby heating the low-temperature air to the appropriate temperature and effectively heating the water entering heat exchanger 16, preventing insufficient air heat from causing the heating water temperature to fail to meet the standard.

[0034] Reference Figure 8 and Figure 11 A protective shell II 37 is fixed to one side of the protective shell I 6 to protect the air duct 24. Protective shell II 37 is made of the same material as protective shell I 6 and is also filled with insulation material. Both protective shell II 37 and protective shell I 6 have an insulation layer 38 inside. The insulation layer 38 is made of aluminum silicate fiber cotton, and its thickness is determined according to actual insulation requirements, generally between 20-50mm, which can effectively reduce heat loss.

[0035] In another embodiment: Refer to Figure 12 and Figure 13 One side of the protective shell I6 has an opening, within which a fixed cover plate 44 is slidably and sealed, and the fixed cover plate 44 is fixedly connected to the protective shell I6 by bolts. One side of the fixed cover plate 44 abuts against the two protective plates 7, and another side of the fixed cover plate 44 is fixedly connected to the heat storage body 1 by bolts. Each of the two protective plates 7 has a sliding groove 40, and each of the two sliding grooves 40 has a partition plate 41 slidably connected within it. One side of the partition plate 41 has a spring 42 fixedly attached to it by a spring seat, and one end of the spring 42 is fixedly connected to the inner wall of one side of the sliding groove 40 by the spring seat. The side of the partition plate 41 away from the spring 42 abuts against the fixed cover plate 44. The partition plate 41 has multiple through holes II 43 that mate with the through holes I 39.

[0036] When the heat storage body 1 needs to be removed from the protective housing I6 for maintenance or replacement, first loosen the bolts connecting the fixing cover plate 44 to the protective housing I6, and pull the fixing cover plate 44 out of the protective housing I6. The fixing cover plate 44 releases its pressure on the partition plate 41, and the elastic force of the spring 42 pushes the partition plate 41 to move outward and reset. At this time, the through hole I 39 and the through hole II 43 are misaligned, and the partition plate 41 can seal the through hole I 39, thereby preventing outside air from entering the cavities I 8, II 9, III 10 and IV 11 during the removal of the heat storage body 1. After the heat storage body 1 is reinstalled, the fixing cover plate 44 is reinstalled on the protective housing I6. The fixing cover plate 44 presses the partition plate 41 again, and the through hole II 43 and the through hole I 39 are realigned, which facilitates the subsequent entry of air into the serpentine heating channel 3 for heating.

[0037] The method of using a complementary solid-state electric thermal storage unit for residential heating includes the following steps: S1. During off-peak hours, the resistance heating tube 2 is energized and heats up, and the heat storage body 1 absorbs and stores heat energy. When heating is needed in the heat storage body 1, the circulating fan 12 is started, which circulates the air in the protective shell I6, the air outlet pipe 14, the heat exchanger 16, and the return air pipe 17. When the air passes through the serpentine heating channel 3, the heat in the heat storage body 1 heats the air to form hot air. Then the hot air enters the heat exchanger 16 through the air outlet pipe 14 for heat exchange, and the air after heat exchange flows back to the protective shell I6 through the return air pipe 17 for reheating. S2. Water in the underfloor heating pipes of residence 4 enters heat exchanger 16 through return pipe 23. Hot air heats the water and flows into the underfloor heating pipes through outlet pipe 19 to heat residence 4. Temperature sensor II 20 monitors the temperature of hot water in real time, while flow control valve 21 controls the flow rate of hot water. S3. The air that has undergone heat exchange flows back to the protective housing I6 through the return air duct 17. When the temperature sensor I18 detects that the temperature of the circulating air is low, the electric push rod 31 is activated. The output shaft of the electric push rod 31 pushes the piston plate 32 down and injects hydraulic oil into the two hydraulic cylinders II33 respectively. Under the action of the hydraulic oil, the piston rod 34 pushes the sealing plate I26 and the sealing plate II28 to move. The sealing plate I26 closes the through hole 25, and the sealing plate II28 releases the seal on the air guide pipe 24. At this time, the air passes through the inlet... The air tube 13 enters the cavity I 8 and flows through the corresponding serpentine heating channel 3 in the heat storage body 1 for initial heating. The heated air enters the cavity III 10 through the cavity II 9 and the air guide tube 24, and then flows through the serpentine heating channel 3 connected to the cavity III 10 for secondary heating. This increases the heating time of the air in the heat storage body 1, thereby heating the low temperature air to the corresponding temperature and effectively heating the water entering the heat exchanger 16, avoiding insufficient air heat that would cause the heating water temperature to fail to meet the standard. S4. When the heat storage body 1 needs to be inspected or replaced, the heat storage body 1 is pulled out of the protective shell I6 by fixing the cover plate 44. The fixing cover plate 44 releases the pressure on the partition plate 41, and the elastic force of the spring 42 pushes the partition plate 41 to move outward and reset. At this time, the through hole I 39 and the through hole II 43 are misaligned, and the partition plate 41 can seal the through hole I 39, thereby preventing outside air from entering the cavity I 8, cavity II 9, cavity III 10 and cavity IV 11 during the removal of the heat storage body 1. After the heat storage body 1 is reinstalled, the fixing cover plate 44 presses the partition plate 41 again, and the through hole II 43 and the through hole I 39 are realigned, so as to facilitate the subsequent entry of air into the serpentine heating channel 3 for heating.

[0038] However, as is well known to those skilled in the art, the working principles and wiring methods of the electric actuator 31, solenoid valve I 15, circulating fan 12, temperature sensor I 18, temperature sensor II 20, flow control valve 21 and solenoid valve II 22 are all conventional means or common knowledge, and will not be described in detail here. Those skilled in the art can make any selections according to their needs or convenience.

[0039] The accompanying drawings in this application are for illustrative purposes only. The dimensions and shapes of the components shown are not actual limitations but are merely schematic representations. In actual implementation, the components can be reasonably configured and adjusted according to specific needs and actual conditions.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A heat storage mechanism, characterized in that, include: The heat storage body (1) has multiple resistance heating tubes (2) fixedly running through it. The resistance heating tubes (2) are used to connect to the power source to heat the heat storage body (1) by energizing it. The heat storage body (1) is provided with multiple serpentine heating channels (3) for heating the air flowing through it.

2. The heat storage mechanism according to claim 1, characterized in that, The heat storage body (1) is made of ceramic matrix composite material.

3. A complementary solid-state electric thermal storage unit for residential heating, comprising the thermal storage mechanism described in claim 1, characterized in that, Also includes: A greenhouse (5) is built on one side of the residential building (4). A protective shell I (6) is installed inside the greenhouse (5). The heat storage body (1) is located inside the protective shell I (6). Two protective plates (7) are fixed inside the protective shell I (6) and respectively attached to the two sides of the heat storage body (1). The protective plates (7) are provided with multiple through holes I (39) that are connected to the serpentine heating channel (3). Two Z-shaped plates (36) are fixed inside the protective housing I (6), and one side of each Z-shaped plate (36) is connected to the corresponding protective plate (7), and the other side is connected to the inner wall of the protective housing I (6), so that the interior of the protective housing I (6) is divided by the Z-shaped plates (36) and the protective plates (7) to form cavities I (8), II (9), III (10) and IV (11); A heating structure for using the heat storage body (1) to release heat energy to heat the dwelling (4); A switching structure is used to extend the flow path and time of air in the serpentine heating channel (3) when the return air temperature is low.

4. The complementary solid-state electric thermal storage unit for residential heating according to claim 3, characterized in that, The heating structure includes: A circulating fan (12) is fixed to one side of the protective housing I (6) by a frame; The air inlet pipe (13) and the air outlet pipe (14) are respectively fixed on both sides of the protective housing I (6). One end of the air inlet pipe (13) is connected to the air outlet of the circulating fan (12), and the other end is connected to the cavity I (8). The heat exchanger (16) has its hot fluid pipeline inlet end connected to one end of the outlet pipe (14), and the outlet pipe (14) is connected to the cavity IV (11); Return air duct (17) connects the hot fluid pipeline outlet of the heat exchanger (16) to the air inlet of the circulating fan (12); The outlet pipe (19) and return pipe (23) are respectively connected to the outlet end and inlet end of the cold fluid pipeline of the heat exchanger (16) and are used to connect the underfloor heating pipeline in the house (4).

5. The complementary solid-state electric thermal storage unit for residential heating according to claim 4, characterized in that, The switching structure includes: The air duct (24) is fixed to one side of the protective shell I (6), with its top end connected to the cavity III (10) and its bottom end connected to the cavity II (9); Multiple through holes (25) are provided in the two Z-shaped plates (36) to connect the cavity I (8) and the cavity III (10) and the cavity IV (11) and the cavity II (9); Two sealing plates I (26) are slidably connected to the two Z-shaped plates (36) respectively, for sealing the through hole (25); Two sealing plates II (28) are slidably connected to the inner walls of the cavity III (10) and the cavity II (9) respectively, for sealing the air guide tube (24). The connecting rod (27) is used to fix the adjacent closed plate I (26) and the closed plate II (28) so that the two can move synchronously; A drive assembly for synchronously driving the movement of the two enclosed plates I (26).

6. The complementary solid-state electric thermal storage unit for residential heating according to claim 5, characterized in that, The driving component includes: An electric push rod (31) is fixed above the protective housing I (6); Hydraulic cylinder I (30) is fixed to the top of the protective housing I (6), and a piston plate (32) connected to the output shaft of the electric push rod (31) is slidably connected inside it. Two hydraulic cylinders II (33) are fixed to both sides of the protective housing I (6); The conduit (35) connects the hydraulic cylinder I (30) to the two hydraulic cylinders II (33); The piston rod (34) is sealed and slidably disposed inside the hydraulic cylinder II (33), and one end extends into the protective housing I (6) and is connected to the sealing plate I (26) through the fixing plate (29).

7. The complementary solid-state electric thermal storage unit for residential heating according to claim 6, characterized in that, The return air duct (17) is equipped with a temperature sensor I (18) for detecting the temperature of the return air; the liquid outlet duct (19) is equipped with a temperature sensor II (20) for detecting the temperature of the heated water.

8. The complementary solid-state electric thermal storage unit for residential heating according to claim 7, characterized in that, The protective housing I (6) has an opening on one side, and a fixed cover plate (44) is slidably and sealed inside the opening. The fixed cover plate (44) is fixedly connected to the heat storage body (1) and the protective housing I (6) by bolts. Both of the protective plates (7) are provided with sliding grooves (40), and partitions (41) are slidably connected in the sliding grooves (40). The partitions (41) are connected to the inner wall of the sliding grooves (40) by springs (42), and one side of the partitions abuts against the fixed cover plate (44). The partition (41) is provided with a plurality of through holes (43) that cooperate with the through hole I (39).

9. The complementary solid-state electric thermal storage unit for residential heating according to claim 8, characterized in that, Both the protective shell I (6) and the protective shell II (37) fixed to one side are provided with a heat insulation layer (38), and both the heat insulation layer (38) and the protective plate (7) are made of aluminum silicate fiber cotton.

10. A method of using a complementary solid-state electric thermal storage unit for residential heating, applied to the complementary solid-state electric thermal storage unit for residential heating as described in claim 9, characterized in that... Includes the following steps: S1. During off-peak hours, the resistance heating tube (2) is powered on to generate heat and store the heat energy in the heat storage body (1). S2. Start the circulating fan (12) to circulate the air between the protective shell I (6), the outlet pipe (14), the heat exchanger (16) and the return air pipe (17); Air flows through the serpentine heating channel (3) in the heat storage body (1) and is heated into hot air. The hot air heats the return water of the floor heating system in the heat exchanger (16), and the heated water is supplied to the floor heating system through the liquid outlet pipe (19). S3. When the temperature sensor I (18) detects that the circulating air temperature is lower than the set value, the electric push rod (31) is controlled to move, and the sealing plate I (26) is pushed to close the through hole (25) through hydraulic transmission. At the same time, the sealing plate II (28) opens the air guide pipe (24). The air flows through the cavity I (8), cavity II (9), air guide pipe (24) and cavity III (10) in sequence, and is heated twice in the heat storage body (1) to increase the air temperature. S4. When disassembling the heat storage body (1), the fixed cover plate (44) releases the constraint on the partition plate (41), and the spring (42) pushes the partition plate (41) to reset, so that the through hole I (39) and the through hole II (43) are misaligned to achieve sealing; when installing, the fixed cover plate (44) recompresses the spring (42) to align each through hole and restore the ventilation function.

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