A return air direct heating type heat exchange and storage device

Abstract

The utility model belongs to heat exchange equipment technical field, concretely is a kind of return air direct heating heat exchange heat storage device, including cabinet;First heat exchange chamber and second heat exchange chamber are equipped in the middle part of the cabinet;Heat storage assembly is installed in the middle part of the cabinet;Two groups of ventilation slots are set in the lateral wall of the cabinet;Two groups of ventilation slots are oppositely arranged;Two groups of ventilation slots are respectively corresponding first heat exchange chamber and second heat exchange chamber position;Two groups of air collecting hoods are fixedly connected to the lateral wall of the cabinet;Air collecting hood is set in corresponding first heat exchange chamber position;Two air collecting hoods are fixedly connected with air inlet pipe in end portion;Through the above structure, the waste heat of waste heat flow can be fully utilized, the heat is transferred to the water in the heat exchange box and heat storage tank, the heat is stored, the fresh air can be heated to form hot air when passing through heat storage tank, the gradient utilization can maximize the recovery of waste heat, and convert into usable heat energy, reduce the energy loss caused by cold and hot air mixing.

Description

Technical Field

[0001] This utility model belongs to the technical field of heat exchange equipment, specifically a return air direct heating heat exchange and storage device. Background Technology

[0002] During mine operations, return air waste heat refers to the heat energy carried by the exhaust gas discharged from the mine's ventilation system. This heat energy mainly comes from the operation of underground equipment and geothermal effects.

[0003] Mining equipment generates a large amount of heat during operation. Geothermal energy is conducted into the air through the surrounding rock of the mine, causing the return air temperature to be higher than the intake air temperature. Traditional ventilation systems directly discharge this heat into the atmosphere, resulting in energy waste. Traditional heat exchange devices transfer the heat to the heat storage body by passing the high-temperature return air through it, raising its temperature and storing thermal energy. During use, when the return air temperature is too high or too low, temperature fluctuations can easily lead to unstable heating or cooling effects, making it difficult to fully utilize some thermal energy and resulting in energy waste.

[0004] Therefore, this utility model provides a return air direct heating heat exchange and heat storage device. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A return-air direct-heating heat exchange and storage device of this utility model includes a housing; a first heat exchange chamber and a second heat exchange chamber are provided in the middle of the housing; a heat storage component is installed in the middle of the housing; two sets of ventilation slots are provided on the side wall of the housing; the two sets of ventilation slots are arranged opposite to each other; the two sets of ventilation slots correspond to the positions of the first heat exchange chamber and the second heat exchange chamber, respectively; two sets of air collecting hoods are fixedly connected to the side wall of the housing; the air collecting hoods are positioned corresponding to the positions of the first heat exchange chambers. Two of the aforementioned air collecting hoods are fixedly connected to their ends with air inlet pipes; the other two air collecting hoods are fixedly connected to their ends with air outlet pipes; the air inlet pipes and air outlet pipes are arranged opposite each other; a fan is installed in the middle of each air inlet pipe and air outlet pipe; a uniform air distribution assembly is installed in the middle of the housing; a first connecting pipe is installed on the top of the housing; a filter assembly is provided between the first connecting pipe and the housing; the heat storage assembly includes a heat exchange box; the heat exchange box is fixedly connected to the middle of the first heat exchange chamber; a heat storage box is fixedly connected to the middle of the second heat exchange chamber; the heat exchange box and the heat storage box... Two heat exchange plates are fixedly connected to each side wall of the heat exchange box; the two heat exchange plates are arranged opposite each other; a water pump is installed in the middle of the box; the water pump is located in the middle of the first heat exchange chamber and the second heat exchange chamber; a drain pipe is fixedly connected to the middle of the water pump; the end of the drain pipe is connected to the bottom of the heat exchange box; a water suction pipe is fixedly connected to the middle of the drain pipe; the middle of the water suction pipe passes through the top of the heat storage box; a second connecting pipe connects the heat exchange box and the heat storage box; a water inlet pipe is fixedly connected to the top of the box; a water outlet valve is fixedly connected to the side wall of the box; the water outlet... The valve is connected to the side wall of the heat storage tank. The above structure can make full use of the waste heat of the waste heat airflow, transfer the heat to the water inside the heat exchange tank and the heat storage tank to store the heat. It can also heat the fresh air as it passes through the heat storage tank to form hot air for discharge. This gradient utilization can maximize the recovery of waste heat and convert it into usable heat energy, reduce the energy loss caused by the mixing of hot and cold air, improve the heat exchange efficiency, and the circulation of water in the heat exchange tank and the heat storage tank can reduce the problem of uneven heat exchange caused by local overheating or sudden temperature changes.

[0007] Preferably, the air distribution assembly includes two drivers; the two drivers are fixed to the outer wall of the housing; the output end of the driver penetrates through the side wall of the housing; a gear is fixed to the output end of the driver; multiple fixed rods are fixed to the middle of the two ventilation slots; a guide plate is rotatably connected to the middle of the fixed rod; a hinged ball is installed on the side wall of the guide plate; a connecting plate is installed in the middle of the multiple hinged balls; a toothed groove is formed on the side wall of the connecting plate; the toothed groove and the gear are meshed; through the above structure, the multiple guide plates swing back and forth to guide the airflow, which can make the airflow evenly dispersed to the entire surface of the heat exchange plate, reducing the problem of insufficient heat exchange due to the short contact time between the airflow and the surface of the heat exchange plate.

[0008] Preferably, the filter assembly includes a mounting base; the mounting base is fixedly connected to the end of the first connecting pipe; a filter cylinder is threadedly connected to the end of the mounting base; a filter screen is fixedly connected to the inner side wall of the filter cylinder; two fixing blocks are fixedly connected to the outer side wall of the filter cylinder; the two fixing blocks are arranged opposite to each other; an installation groove is opened in the middle of the water inlet pipe; two through grooves are opened in the inner side wall of the installation groove; two fixing grooves are opened in the middle of the water inlet pipe; multiple springs are fixedly connected to the bottom of the installation groove; top plates are fixedly connected to the ends of the multiple springs; and the two fixing blocks are installed in the middle of the corresponding fixing grooves. The above structure can effectively intercept impurities and scale particles contained in the water flow, reduce the deposition of impurities at the bottom of the heat exchange box and the heat storage box to form sludge, and reduce the wear of components in the water pump.

[0009] Preferably, two heating wires are fixedly connected to the outer wall of the box; the two heating wires are arranged opposite each other; two fixing covers are fixedly connected to the outer wall of the box; the fixing covers are fixed to the outside of the corresponding heating wires; a solar panel is fixedly connected to the middle of the fixing cover; the above structure can effectively assist heat exchange, compensate for heat loss of the box in low temperature environment, maintain the box temperature stability, and directly apply heat energy to the outer wall of the box to increase the surface temperature of the box, thereby improving heat exchange efficiency.

[0010] Preferably, a first sealing ring is fixedly connected to the middle of the mounting base; a second sealing ring is fixedly connected to the top of the filter cylinder; the above structure effectively reduces the seepage or leakage of pressurized water from the connection between the mounting base and the filter cylinder, maintaining a good sealing effect.

[0011] Preferably, a filter plate is fixedly connected to the middle of the air inlet pipe; the filter plate is fixedly connected to the end of the air inlet pipe; the above structure reduces the direct entry of pollutants in the airflow into the housing, reducing the difficulty of daily maintenance.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. The return air direct heating heat exchange and storage device of this utility model can make full use of the waste heat of the waste airflow through the above structure, and transfer the heat to the water inside the heat exchange box and the heat storage box to store the heat. It can also heat the fresh air as it passes through the heat storage box to form hot air for discharge. This gradient utilization can maximize the recovery of waste heat and convert it into usable heat energy, reduce the energy loss caused by the mixing of cold and hot air, improve the heat exchange efficiency, and the circulation of water in the heat exchange box and the heat storage box can reduce the problem of uneven heat exchange caused by local overheating or sudden temperature changes.

[0014] 2. The return air direct heating heat exchange and storage device of this utility model guides the airflow by having multiple guide plates swing back and forth, which can evenly distribute the airflow to the entire surface of the heat exchange plate, reducing the problem of incomplete heat exchange caused by the short contact time between the airflow and the surface of the heat exchange plate. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1 This is a perspective view of the present invention;

[0017] Figure 2 This is a sectional view of the box body in this utility model;

[0018] Figure 3 This is a schematic diagram of the heating wire in this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the wind distribution component in this utility model;

[0020] Figure 5 This is an exploded view of the filter component in this utility model.

[0021] In the diagram: 1. Housing; 11. Air inlet duct; 12. Air collector hood; 13. Ventilation slot; 14. First heat exchange chamber; 15. Second heat exchange chamber; 16. Fan; 17. First connecting pipe; 18. Air outlet duct; 2. Heat storage component; 20. Heat storage box; 21. Heat exchange box; 22. Heat exchange plate; 23. Water pump; 24. Drain pipe; 25. Second connecting pipe; 26. Water extraction pipe; 27. Water outlet valve; 28. Water inlet pipe; 3. Air distribution component; 31. Drive 32. Gear; 33. Connecting plate; 34. Tooth groove; 35. Fixing rod; 36. Guide plate; 37. Hinge ball; 4. Filter assembly; 41. Mounting base; 42. Filter cylinder; 43. Filter screen; 44. Fixing block; 45. Mounting groove; 46. Spring; 47. Top plate; 48. Fixing groove; 49. Through groove; 5. Heating wire; 51. Fixing cover; 52. Solar panel; 6. First sealing ring; 61. Second sealing ring; 7. Filter plate. Detailed Implementation

[0022] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0023] like Figures 1 to 5As shown in the embodiment of this utility model, a return air direct heating heat exchange and storage device includes a housing 1; a first heat exchange chamber 14 and a second heat exchange chamber 15 are provided in the middle of the housing 1; a heat storage component 2 is installed in the middle of the housing 1; two sets of ventilation slots 13 are opened on the side wall of the housing 1; the two sets of ventilation slots 13 are arranged opposite each other; the two sets of ventilation slots 13 correspond to the positions of the first heat exchange chamber 14 and the second heat exchange chamber 15 respectively; two sets of air collecting hoods 12 are fixedly connected to the side wall of the housing 1; the air collecting hoods 12 are arranged at the positions corresponding to the first heat exchange chamber 14; air inlet pipes 11 are fixedly connected to the ends of two air collecting hoods 12; air outlet pipes 18 are fixedly connected to the ends of the other two air collecting hoods 12; the air inlet pipes 11 and the air outlet pipes 18 are arranged opposite each other; a fan 16 is installed in the middle of both the air inlet pipes 11 and the air outlet pipes 18; a uniform air distribution component 3 is installed in the middle of the housing 1; a first connecting pipe 17 is installed on the top of the housing 1; the first connecting pipe 17... A filter assembly 4 is provided between the connecting pipe 17 and the housing 1; the heat storage assembly 2 includes a heat exchange box 21; the heat exchange box 21 is fixedly connected to the middle of the first heat exchange chamber 14; a heat storage box 20 is fixedly connected to the middle of the second heat exchange chamber 15; two heat exchange plates 22 are fixedly connected to the side walls of both the heat exchange box 21 and the heat storage box 20; the two heat exchange plates 22 are arranged opposite each other; a water pump 23 is installed in the middle of the housing 1; the water pump 23 is located in the middle of the first heat exchange chamber 14 and the second heat exchange chamber 15; a drain pipe 24 is fixedly connected to the middle of the water pump 23; the end of the drain pipe 24 is connected to the bottom of the heat exchange box 21; a water suction pipe 26 is fixedly connected to the middle of the drain pipe 24; the middle of the water suction pipe 26 passes through the top of the heat storage box 20; a second connecting pipe 25 connects the heat exchange box 21 and the heat storage box 20; an inlet pipe 28 is fixedly connected to the top of the housing 1; a water outlet valve 27 is fixedly connected to the side wall of the housing 1; the water outlet valve 27 is connected to the side wall of the heat storage box 20;During operation, the external heat source pipe is connected to the top air inlet pipe 11. Pure water is injected into the heat exchange box 21 through the first connecting pipe 17. The fan 16 is turned on, and the waste heat discharged through the air inlet pipe 11 is evenly blown onto the surface of the heat exchange plate 22. After absorbing heat, the heat exchange plate 22 transfers the heat to the water, heating the water. The heated cold water and the heat source directly exchange heat in the heat exchange box 21. After heat exchange, the cold air is discharged from the top air outlet pipe 18 by the fan 16. The heated water in the heat exchange box 21 flows through the second connecting pipe 25 to the middle of the heat storage box 20. The water pump 23 is turned on, and the water inside the heat exchange plate 22 is sucked in through the water suction pipe 26 and discharged through the drain pipe 24 back into the heat exchange box 21, so that the water flows in the middle of the heat exchange box 21 and the heat storage box 20, so that it is continuously heated. The water inside the heat storage box 20 stores heat. When releasing heat, the bottom... With the air inlet duct 11 open, fresh air from outside is discharged into the housing 1 via the fan 16. The heated air is then discharged through the heat exchange plate 22 on one side of the heat storage tank 20. The bottom outlet duct 18 connects to the pipe to be used, and the heated fresh air is discharged through the bottom outlet duct 18. When the water flow is not in use, it is discharged through the outlet valve 27. This structure fully utilizes the residual heat of the waste airflow, transferring the heat to the water inside the heat exchange tank 21 and the heat storage tank 20 for heat storage. This allows fresh air to be heated as it passes through the heat storage tank 20, forming hot air that is discharged. This gradient utilization maximizes the recovery of waste heat and converts it into usable heat energy, reducing energy loss caused by the mixing of hot and cold air, improving heat exchange efficiency, and reducing uneven heat exchange caused by localized overheating or sudden temperature changes by circulating the water in the heat exchange tank 21 and the heat storage tank 20.

[0024] like Figure 1 and Figure 4As shown, the air distribution assembly 3 includes two actuators 31; the two actuators 31 are fixed to the outer wall of the housing 1; the output end of the actuator 31 passes through the side wall of the housing 1; a gear 32 is fixedly connected to the output end of the actuator 31; multiple fixed rods 35 are fixedly connected to the middle of the two ventilation slots 13; a guide plate 36 is rotatably connected to the middle of the fixed rod 35; a hinge ball 37 is installed on the side wall of the guide plate 36; a connecting plate 33 is installed in the middle of the multiple hinge balls 37; a toothed groove 34 is opened on the side wall of the connecting plate 33; the toothed groove 34 is meshed with the gear 32; during operation, when the airflow passes through the air inlet pipe 11 and is discharged into the housing 1, the actuator 31 is turned on. The output end drives the gear 32 to rotate back and forth. When the gear 32 rotates, it moves the connecting plate 33 through the tooth groove 34. When the connecting plate 33 moves, it drives the guide plate 36 to move to one side through the hinge ball 37. The guide plate 36 swings in the middle of the fixed rod 35. The airflow flows through multiple fixed rods 35. The multiple fixed rods 35 guide the airflow, so that the airflow is evenly distributed to the surface of the heat exchange plate 22. Through the above structure, the multiple guide plates 36 swing back and forth to guide the airflow, so that the airflow can be evenly distributed to the entire surface of the heat exchange plate 22, reducing the problem of incomplete heat exchange caused by the short contact time between the airflow and the surface of the heat exchange plate 22.

[0025] like Figure 2 and Figure 5 As shown, the filter assembly 4 includes a mounting base 41; the mounting base 41 is fixedly connected to the end of the first connecting pipe 17; a filter cylinder 42 is threadedly connected to the end of the mounting base 41; a filter screen 43 is fixedly connected to the inner wall of the filter cylinder 42; two fixing blocks 44 are fixedly connected to the outer wall of the filter cylinder 42; the two fixing blocks 44 are arranged opposite to each other; an installation groove 45 is opened in the middle of the water inlet pipe 28; two through grooves 49 are opened in the inner wall of the installation groove 45; two fixing grooves 48 are opened in the middle of the water inlet pipe 28; multiple springs 46 are fixedly connected to the bottom of the installation groove 45; a top plate 47 is fixedly connected to the end of the multiple springs 46; the two fixing blocks 44 are installed in the middle of the corresponding fixing grooves 48; during operation, the first connecting pipe 17 is fixedly installed in the middle of the filter cylinder 42 through the mounting base 41, and the water flows into the heat exchange box 21. First, place the two fixing blocks 44 corresponding to the two through slots 49. Move the bottom of the filter cylinder 42 downwards corresponding to the mounting slot 45. Press the end of the filter cylinder 42 against the top plate 47. Multiple springs 46 elastically contract. At this time, rotate the filter cylinder 42. After the fixing blocks 44 move to the corresponding fixing slots 48, the springs 46 elastically reset the fixing blocks 44 upwards and enter the fixing slots 48. This quickly fixes the filter cylinder 42 in the middle of the water inlet pipe 28. When the water flows in through the first connecting pipe 17, it is intercepted and filtered by the filter screen 43. The above structure can effectively intercept impurities and scale particles in the water flow, reduce the deposition of impurities at the bottom of the heat exchange box 21 and the heat storage box 20 to form sludge, and reduce the wear of the components in the water pump 23.

[0026] like Figure 3 As shown, two heating wires 5 are fixedly connected to the outer wall of the box 1; the two heating wires 5 are arranged opposite each other; two fixing covers 51 are fixedly connected to the outer wall of the box 1; the fixing covers 51 are fixed to the outside of the corresponding heating wires 5; a solar panel 52 is fixedly connected to the middle of the fixing cover 51; when the box 1 is placed outside, sunlight shines directly on the surface of the solar panel 52, the solar panel 52 stores energy, and uses the stored energy on the heating wires 5 to directly heat the inside of the box 1. The above structure can effectively assist heat exchange, compensate for the heat loss of the box 1 in the low temperature environment, maintain the temperature stability of the box 1, and directly apply the heat energy to the outer wall of the box 1 to increase the surface temperature of the box 1, thereby improving the heat exchange efficiency.

[0027] like Figure 5 As shown, a first sealing ring 6 is fixedly connected to the middle of the mounting base 41; a second sealing ring 61 is fixedly connected to the top of the filter cylinder 42. During operation, when the first connecting pipe 17 is connected to the filter cylinder 42 through the mounting base 41, the first sealing ring 6 and the second sealing ring 61 merge together, sealing the connection between the mounting base 41 and the filter cylinder 42 through the first sealing ring 6 and the second sealing ring 61. The above structure effectively reduces the seepage or leakage of pressurized water from the connection between the mounting base 41 and the filter cylinder 42, maintaining a good sealing effect.

[0028] like Figure 4 As shown, a filter plate 7 is fixedly connected to the middle of the air inlet pipe 11; the filter plate 7 is fixedly connected to the end of the air inlet pipe 11; during operation, when the airflow is discharged through the air inlet pipe 11, the filter plate 7 intercepts the impurities in the airflow. The above structure reduces the direct entry of pollutants in the airflow into the housing 1, thus reducing the difficulty of daily maintenance.

[0029] During operation, the external heat source pipe is connected to the top air inlet pipe 11. Pure water is injected into the heat exchange box 21 through the first connecting pipe 17. The fan 16 is turned on, and the waste heat discharged through the air inlet pipe 11 is evenly blown onto the surface of the heat exchange plate 22. After absorbing heat, the heat exchange plate 22 transfers the heat to the water, heating the water. The heated cold water and the heat source directly exchange heat in the heat exchange box 21. After heat exchange, the cold air is discharged from the top air outlet pipe 18 by the fan 16. The heated water in the heat exchange box 21 flows through the second connecting pipe 25 to the middle of the heat storage box 20. The water pump 23 is turned on, and the water inside the heat exchange plate 22 is sucked in through the water suction pipe 26 and discharged into the heat exchange box 21 through the drain pipe 24, so that the water flows in the heat exchange box 21. The water in the heat storage box 20 circulates in the middle, continuously heating it. The water inside the heat storage box 20 stores heat. When heat is released, the bottom air inlet pipe 11 is opened, and fresh air from outside is discharged into the box 1 via the fan 16. The heated air is then discharged through the heat exchange plate 22 on one side of the heat storage box 20. The bottom air outlet pipe 18 is connected to the pipe to be used, and the fresh air heated by the heat storage is discharged through the bottom air outlet pipe 18. When the water is not in use, it is discharged through the water outlet valve 27. When the airflow passes through the air inlet pipe 11 and flows into the box 1, the driver 31 is turned on. The output of the driver 31 drives the gear 32 to rotate back and forth. When the gear 32 rotates, it moves the connecting plate 33 through the tooth groove 34. When the connecting plate 33 moves, it drives the guide through the hinge ball 37. The flow plate 36 moves to one side, and the flow guide plate 36 swings in the middle of the fixed rod 35. The airflow flows through multiple fixed rods 35, which guide the airflow so that the airflow is evenly distributed to the surface of the heat exchange plate 22. The first connecting pipe 17 is fixedly installed in the middle of the filter cylinder 42 through the mounting base 41. When the water is discharged into the heat exchange box 21, the two fixed blocks 44 are first placed at the positions of the two through slots 49. The bottom of the filter cylinder 42 moves downward at the position corresponding to the mounting slot 45. The end of the filter cylinder 42 applies pressure to the top plate 47, and multiple springs 46 elastically contract. At this time, the filter cylinder 42 is rotated, and the fixed block 44 moves to the position of the corresponding fixed slot 48. The elastic reset of the spring 46 causes the fixed block 44 to move upward and enter the fixed position. Inside the trough 48, the filter cartridge 42 is quickly fixed in the middle of the water inlet pipe 28. When the water flows in through the first connecting pipe 17, it is intercepted and filtered by the filter screen 43. When the box 1 is set outside, the sunlight shines directly on the surface of the solar panel 52. The solar panel 52 stores energy and uses the stored energy on the heating wire 5 to directly heat the inside of the box 1. When the first connecting pipe 17 is connected to the filter cartridge 42 through the mounting base 41, the first sealing ring 6 and the second sealing ring 61 are combined. The first sealing ring 6 and the second sealing ring 61 seal the connection between the mounting base 41 and the filter cartridge 42. When the airflow is discharged through the air inlet pipe 11, the impurities in the airflow are intercepted by the filter plate 7.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A return-air direct-heating heat exchange and storage device, comprising a housing (1); characterized in that: The box (1) is provided with a first heat exchange chamber (14) and a second heat exchange chamber (15) in the middle; a heat storage component (2) is installed in the middle of the box (1); two sets of ventilation slots (13) are opened on the side wall of the box (1); the two sets of ventilation slots (13) are arranged opposite to each other; the two sets of ventilation slots (13) correspond to the positions of the first heat exchange chamber (14) and the second heat exchange chamber (15) respectively; two sets of air collecting hoods (12) are fixed to the side wall of the box (1); the air collecting hoods (12) are set at the positions corresponding to the first heat exchange chamber (14); Two of the air collecting hoods (12) are fixedly connected to the ends of an air inlet pipe (11); the other two air collecting hoods (12) are fixedly connected to the ends of an air outlet pipe (18); the air inlet pipe (11) and the air outlet pipe (18) are arranged opposite to each other; a fan (16) is installed in the middle of both the air inlet pipe (11) and the air outlet pipe (18); a wind equalization component (3) is installed in the middle of the housing (1); a first connecting pipe (17) is installed on the top of the housing (1); a filter component (4) is provided between the first connecting pipe (17) and the housing (1).

2. The return air direct heating heat exchange and storage device according to claim 1, characterized in that: The heat storage component (2) includes a heat exchange box (21); the heat exchange box (21) is fixedly connected to the middle of the first heat exchange chamber (14); a heat storage box (20) is fixedly connected to the middle of the second heat exchange chamber (15); two heat exchange plates (22) are fixedly connected to the side walls of both the heat exchange box (21) and the heat storage box (20); the two heat exchange plates (22) are arranged opposite to each other; a water pump (23) is installed in the middle of the box body (1); the water pump (23) is located in the middle of the first heat exchange chamber (14) and the second heat exchange chamber (15); the water pump (23) A drain pipe (24) is fixedly connected to the middle of the heat exchange box (21); the end of the drain pipe (24) is connected to the bottom of the heat exchange box (21); a water pumping pipe (26) is fixedly connected to the middle of the drain pipe (24); the middle of the water pumping pipe (26) passes through the top of the heat storage box (20); a second connecting pipe (25) connects the heat exchange box (21) and the heat storage box (20); an inlet pipe (28) is fixedly connected to the top of the box body (1); a water outlet valve (27) is fixedly connected to the side wall of the box body (1); the water outlet valve (27) is connected to the side wall of the heat storage box (20).

3. The return air direct heating heat exchange and storage device according to claim 1, characterized in that: The uniform airflow assembly (3) includes two drivers (31); the two drivers (31) are fixed to the outer wall of the housing (1); the output end of the driver (31) passes through the side wall of the housing (1); a gear (32) is fixed to the output end of the driver (31); multiple fixed rods (35) are fixed to the middle of the two ventilation slots (13); a guide plate (36) is rotatably connected to the middle of the fixed rod (35); a hinge ball (37) is installed on the side wall of the guide plate (36); a connecting plate (33) is installed in the middle of the multiple hinge balls (37); a toothed groove (34) is opened on the side wall of the connecting plate (33); the toothed groove (34) and the gear (32) are meshed.

4. The return air direct heating heat exchange and storage device according to claim 2, characterized in that: The filter assembly (4) includes a mounting base (41); the mounting base (41) is fixed to the end of the first connecting pipe (17); a filter cylinder (42) is threaded to the end of the mounting base (41); a filter screen (43) is fixed to the inner wall of the filter cylinder (42); two fixing blocks (44) are fixed to the outer wall of the filter cylinder (42); the two fixing blocks (44) are arranged opposite to each other; an installation groove (45) is opened in the middle of the water inlet pipe (28); two through grooves (49) are opened in the inner wall of the installation groove (45); two fixing grooves (48) are opened in the middle of the water inlet pipe (28); a plurality of springs (46) are fixed to the bottom of the installation groove (45); a top plate (47) is fixed to the end of the plurality of springs (46); the two fixing blocks (44) are installed in the middle of the corresponding fixing grooves (48).

5. A return air direct-heating heat exchange and storage device according to claim 1, characterized in that: Two heating wires (5) are fixed to the outer wall of the box (1); the two heating wires (5) are arranged opposite to each other; two fixing covers (51) are fixed to the outer wall of the box (1); the fixing covers (51) are fixed to the outside of the corresponding heating wires (5); a solar panel (52) is fixed to the middle of the fixing cover (51).

6. A return-air direct-heating heat exchange and storage device according to claim 4, characterized in that: A first sealing ring (6) is fixedly connected to the middle of the mounting base (41); a second sealing ring (61) is fixedly connected to the top of the filter cylinder (42).

7. A return air direct-heating heat exchange and storage device according to claim 1, characterized in that: A filter plate (7) is fixedly connected to the middle of the air inlet pipe (11); the filter plate (7) is fixedly connected to the end of the air inlet pipe (11).

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