Solar air heat exchange device

Abstract

The utility model discloses a solar air heat exchange device which comprises a plurality of sets of heat collecting pipes arranged at equal intervals, double-spiral inner cores are fixedly installed in the heat collecting pipes, arc-shaped ventilation pipes are fixedly communicated between the ends of every two adjacent heat collecting pipes, an air inlet connecting pipe is fixedly communicated with one end of the heat collecting pipe located on the rightmost side, and an air outlet connecting pipe is fixedly communicated with the other end of the heat collecting pipe located on the rightmost side. An air outlet connecting pipe is fixedly communicated with one end of the heat collecting pipe on the leftmost side; and two supports are fixedly installed on the top of the water tank, and the tops of the supports are fixedly connected with the bottoms of the multiple corresponding arc-shaped ventilation pipes. By arranging a series of structures, solar heat collection, water heating and heat preservation reservation are facilitated, supplied gas can be heated and utilized conveniently, the gas flow direction is automatically switched when the heat collection pipe becomes cool and cannot be reused at night, the gas is heated through the pre-stored heat, and the heat utilization rate of the heat collection pipe is improved. The overall heat exchange utilization time and applicability are improved, the phenomenon that heat can only be utilized in the daytime is reduced, and the using effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of solar air heat exchange technology, specifically a solar air heat exchange device. Background Technology

[0002] A solar collector is a device that converts solar radiation into heat energy. Because solar energy is relatively dispersed, it must be concentrated. Therefore, the collector is a key component of various solar energy utilization devices. Solar heat exchangers are a type of solar collector. Typically, heat exchangers absorb solar energy and generate heat through a heat-absorbing material coated inside the collector tube. The heat is then exchanged through a medium flowing through internal pipes. There are many types of heat exchangers and media. Existing technologies include direct heat exchange with air, allowing the air to carry heat for heating and drying. This technology also uses a collector tube coated with a heat-absorbing material, through which cold air is introduced, allowing the cold air to exchange heat within the tube.

[0003] According to the novelty search report, CN221881809U discloses a solar air heat exchange device, which includes a header, a header body, a header cover connected to the upper end of the header body, and an insulation layer on the inner wall of the header cover and the header body. An air inlet connector is connected to the right end of the header body, and an air outlet connector is connected to the left end. The air inlet connector is connected to an air inlet fan via a fan connecting pipe. The header contains several equally spaced parallel partitions. Mounting holes are opened on one side wall of the header opposite the positions of the partitions. Slots are opened on the partitions opposite the positions of the mounting holes. A sleeve is connected to the inside of the slot and at the edge of the mounting hole. This device achieves the functions of small footprint, extended heat exchange distance, improved heat exchange efficiency, and low cost.

[0004] The aforementioned solar air heat exchange device utilizes a reflective prism in conjunction with a heat collection tube and a double-helix inner core within the heat collection tube to heat the flowing air using solar energy. However, it still has the following shortcomings: it cannot retain heat for nighttime use and can only be used during the day under sunlight; at night, the heat collection tube is too cool to heat the gas, resulting in low heat exchange utilization time and limited applicability. Improvements are needed. Therefore, this application proposes a solar air heat exchange device to solve the aforementioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a solar air heat exchange device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a solar air heat exchange device, comprising:

[0007] The heat collection tubes are arranged in multiple groups at equal intervals. A double helical inner core is fixedly installed inside each heat collection tube. An arc-shaped vent pipe is fixedly connected between the ends of two adjacent heat collection tubes. An air inlet pipe is fixedly connected to one end of the rightmost heat collection tube, and an air outlet pipe is fixedly connected to one end of the leftmost heat collection tube. The heat collection tubes are used to absorb solar energy for heat concentration and to heat the gas passing through them.

[0008] The water tank has two supports fixedly installed on its top, and the top of the supports is fixedly connected to the bottom of a plurality of corresponding arc-shaped vent pipes;

[0009] The heat-conducting components consist of multiple sets located inside the water tank. The heat-conducting components are embedded and fixed in the top of the water tank and fixedly connected to the bottom of the corresponding heat-collecting tubes. The heat-conducting components are used to transfer a portion of the heat from the heat-collecting tubes into the water tank to heat the water.

[0010] The heat-conducting coil is located inside the water tank, with both ends extending outside the tank. The heat-conducting coil is used to absorb heat from the hot water and heat the gas as it passes through.

[0011] The PLC controller is fixedly installed on the right side of the water tank;

[0012] The first temperature sensor is fixedly installed on the right side of the water tank and electrically connected to the PLC controller, with its detection end extending into the water tank.

[0013] The second temperature sensor is fixedly installed on the top of the water tank and electrically connected to the PLC controller, and its detection end is in active contact with the outside of one of the heat collection tubes; the first and second temperature sensors are used to detect the water temperature and the heat collection tube temperature respectively and transmit the temperature value to the PLC controller.

[0014] The switching air supply flow assembly is fixed between the right end of the heat-conducting coil and the air inlet pipe, and is electrically connected to the PLC controller. The switching air supply flow assembly is used to supply air into the air inlet pipe, and is controlled by the PLC controller to switch to supplying air into the heat-conducting coil when the temperature of the heat collector tube is lower than the preset minimum value and the water temperature is higher than the preset value.

[0015] The gas collection and outlet assembly is fixed between the gas outlet pipe and the left end of the heat conduction coil; the gas collection and outlet assembly is used to allow the heated gas to be discharged in one direction.

[0016] Preferably, the heat-conducting assembly includes a heat-conducting plate embedded and fixed on the top of the water tank, the top of the heat-conducting plate being fixedly connected to the bottom of the corresponding heat-collecting tube, an insulation sleeve being adhesively fitted on the outside of the heat-conducting plate located above the water tank, and the bottom of the heat-conducting plate being located in the water inside the water tank.

[0017] Preferably, the switching air supply flow assembly includes an air intake fan fixedly installed on the right side of the water tank. The air outlet of the air intake fan is connected to and fixedly connected to a U-shaped pipe. The right end of the heat conduction coil and the right end of the air intake pipe are both connected to and fixedly connected to a solenoid valve. The two ends of the U-shaped pipe are respectively connected to and fixedly connected to the right ends of the corresponding solenoid valves. The two solenoid valves and the air intake fan are all electrically connected to the PLC controller.

[0018] Preferably, the gas collection and outlet assembly includes a Y-shaped connector, and the left end of the heat-conducting coil and the left end of the gas outlet connector are both connected and fixed with a one-way valve whose left side is the outlet. The right ends of the Y-shaped connector are respectively connected and fixed with the left side of the corresponding one-way valve.

[0019] Preferably, the water tank has insulation layers fixedly connected to both the outer and inner sides. The insulation layer on the outer side is movably sleeved on the outside of multiple heat-conducting plates, the first temperature sensor, and the second temperature sensor. The insulation layers on the inner and outer sides serve to keep the heated water in the water tank warm, so that its heat can be retained for a longer period of time for use.

[0020] Preferably, water valves are fixedly connected to the top and bottom of the rear side of the water tank, and a reflective prism is fixedly installed on the top of the water tank between two adjacent heat collection tubes. The reflective prism is used to reflect sunlight onto the heat collection tubes for better heat collection. The two water valves are used for adding water and draining water, respectively, so that the water can be replaced later.

[0021] Preferably, both sides of the water tank are provided with through holes for fixed connection to the outside of the heat-conducting coil.

[0022] Compared with the prior art, the beneficial effects of this utility model are:

[0023] 1. Through the combination of the set solar collector tubes, reflective prisms, water tanks, insulation layers and heat-conducting components, it is possible to use solar energy to collect heat and heat water and reserve heat for insulation.

[0024] 2. Through the coordinated arrangement of the heat collection tube, reflective prism, arc-shaped vent pipe, air outlet pipe, air inlet pipe, switching air supply flow assembly, air collection and outlet assembly, PLC controller, first temperature sensor, and second temperature sensor, the system can utilize the accumulated heat to heat the supplied gas. When the heat collection tube cools down at night and can no longer be used, the system automatically switches the gas flow direction to utilize pre-stored heat to heat the gas. This facilitates the utilization of water heat when there is no sunlight at night and the external heat collection tube is cool, improving the overall heat exchange utilization time and applicability, reducing the phenomenon of only being usable during the day, and improving the overall performance.

[0025] This utility model, through a series of structures, facilitates the use of solar energy for heat collection and water heating, as well as heat preservation and heat utilization of supplied gas. When the heat collection tubes cool down at night and can no longer be used, the gas flow direction is automatically switched to utilize the pre-stored heat to heat the gas, thereby improving the overall heat exchange utilization time and applicability, reducing the phenomenon of only being usable during the day, and improving the usage effect. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a solar air heat exchange device proposed in this utility model;

[0027] Figure 2 for Figure 1 A schematic diagram of the right-side view structure;

[0028] Figure 3 This is a top view of the structure of a solar air heat exchange device proposed in this utility model;

[0029] Figure 4 This is a cross-sectional view of the internal structure of the water tank of a solar air heat exchanger proposed in this utility model.

[0030] In the diagram: 1. Water tank; 101. Insulation layer; 2. Support; 201. Heat collection pipe; 202. Arc-shaped vent pipe; 203. Air outlet pipe; 204. Air inlet pipe; 205. Reflecting prism; 3. Heat insulation sleeve; 301. Heat conduction plate; 4. One-way valve; 401. Y-shaped pipe; 5. U-shaped pipe; 501. Solenoid valve; 502. Air inlet fan; 6. PLC controller; 601. First temperature sensor; 602. Second temperature sensor; 7. Heat conduction coil. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] like Figures 1 to 4 As shown in this embodiment, a solar air heat exchange device includes:

[0033] The heat collection tubes 201 are arranged in multiple groups at equal intervals. A double-helix inner core is fixedly installed inside each heat collection tube 201. An arc-shaped vent pipe 202 is fixedly connected between the ends of two adjacent heat collection tubes 201. An air inlet pipe 204 is fixedly connected to one end of the rightmost heat collection tube 201, and an air outlet pipe 203 is fixedly connected to one end of the leftmost heat collection tube 201. A reflective prism 205 is fixedly installed on the top of the water tank 1 between two adjacent heat collection tubes 201. The heat collection tubes 201 are used to absorb solar energy for heat collection and heat the gas passing through them. The reflective prism 205 is used to reflect sunlight onto the heat collection tubes 201 for better heat collection.

[0034] Water tank 1 has two supports 2 fixedly installed on its top. The top of the supports 2 is fixedly connected to the bottom of the corresponding multiple arc-shaped vent pipes 202. Water valves are fixedly connected to the top and bottom of the rear side of water tank 1. The two water valves are used for adding water and draining water respectively, so that the water can be replaced by personnel later.

[0035] The heat-conducting components consist of multiple sets located within the water in the water tank 1. The heat-conducting components are embedded and fixedly fixed to the top of the water tank 1 and fixedly connected to the bottom of the corresponding heat-collecting pipe 201. Insulation layers 101 are fixedly connected to both the outer and inner sides of the water tank 1. The outer insulation layer is movably sleeved on the outside of multiple heat-conducting plates 301, the first temperature sensor 601, and the second temperature sensor 602. The heat-conducting components are used to transfer a portion of the heat from the heat-collecting pipe 201 into the water tank 1 to heat the water. The insulation layers 101 on the inner and outer sides serve to maintain the temperature of the heated water in the water tank 1, allowing the heat to be retained for a longer period of time for use.

[0036] The heat-conducting coil 7 is located inside the water tank 1, and both ends of it extend outside the water tank 1. Both sides of the water tank 1 are provided with through holes that are fixedly connected to the outside of the heat-conducting coil 7. The heat-conducting coil 7 is used to absorb the heat of the hot water and heat the gas when the gas passes through it.

[0037] PLC controller 6 is fixedly installed on the right side of water tank 1;

[0038] The first temperature sensor 601 is fixedly installed on the right side of the water tank 1 and electrically connected to the PLC controller 6, with its detection end extending into the water tank 1.

[0039] The second temperature sensor 602 is fixedly installed on the top of the water tank 1 and electrically connected to the PLC controller 6, and its detection end is in active contact with the outside of one of the heat collection tubes 201; the first temperature sensor 601 and the second temperature sensor 602 are used to detect the water temperature and the temperature of the heat collection tube 201 respectively, and transmit the temperature value to the PLC controller 6.

[0040] The switching air supply flow assembly is fixed between the right end of the heat-conducting coil 7 and the air inlet pipe 204, and is electrically connected to the PLC controller 6. The switching air supply flow assembly is used to supply air into the air inlet pipe 204, and is controlled by the PLC controller 6 to switch to supply air into the heat-conducting coil 7 when the temperature of the heat collector tube 201 is lower than the preset minimum value and the water temperature is higher than the preset value.

[0041] The gas collection and outlet assembly is fixed between the gas outlet pipe 203 and the left end of the heat-conducting coil 7; the gas collection and outlet assembly is used to allow the heated gas to be discharged in one direction.

[0042] Specifically, the heat-conducting component includes a heat-conducting plate 301 embedded and fixed on the top of the water tank 1. The top of the heat-conducting plate 301 is fixedly connected to the bottom of the corresponding heat-collecting pipe 201. A heat-insulating sleeve 3 located above the water tank 1 is adhesively fitted on the outside of the heat-conducting plate 301. The bottom of the heat-conducting plate 301 is located in the water inside the water tank 1. The heat-conducting plate 301 and the heat-insulating sleeve 3 work together to transfer a portion of the heat from the corresponding heat-collecting pipe 201 into the water tank 1 to heat the water. The heat-insulating sleeve 3 provides heat insulation for the heat-conducting plate 301 on the outside. By heating the water, heat can be retained in the water, which is convenient for utilizing the heat of the water when there is no sunlight at night and the external heat-collecting pipe 201 is relatively cool.

[0043] Furthermore, the switching air supply flow assembly includes an intake fan 502 fixedly installed on the right side of the water tank 1. A U-shaped pipe 5 is fixedly connected to the outlet of the intake fan 502. Solenoid valves 501 are fixedly connected to the right end of the heat transfer coil 7 and the right end of the air inlet pipe 204. The two ends of the U-shaped pipe 5 are respectively fixedly connected to the right end of the corresponding solenoid valve 501. Both solenoid valves 501 and the intake fan 502 are electrically connected to the PLC controller 6. The intake fan 502, U-shaped pipe 5, and solenoid valves 501 work together, initially in the upper position... When solenoid valve 501 opens, the PLC controller 6 uses a preset temperature value to control the upper solenoid valve 501 to close and the lower solenoid valve 501 to open. This temperature value is the temperature of the heat collector tube 201 detected by the second temperature sensor 602. Based on the preset water temperature value transmitted by the first temperature sensor 601, the controller also controls the minimum temperature value at which the air intake fan 502 closes, the lower solenoid valve 501 closes, and the upper solenoid valve 501 opens. Initially, the air intake fan 502 blows air into the U-shaped tube 5, and the air passes through the upper solenoid valve... Gas is supplied into the inlet pipe 204 via 501, and then sequentially enters multiple heat collector tubes 201 to be heated. It is then discharged through the outlet pipe 203. When the temperature of the heat collector tube 201 detected by the second temperature sensor 602 is lower than a preset minimum value, the PLC controller 6 controls the upper solenoid valve 501 to close and the lower solenoid valve 501 to open, thus reversing the gas flow. At this time, the gas flows through the lower solenoid valve 501 into the heat-conducting coil 7. Hot water heats the gas through the heat-conducting coil 7, and the heated gas flows through the left side of the heat-conducting coil 7. When the water temperature received from the first temperature sensor 601 is lower than the preset minimum temperature value, the PLC controller 6 controls the intake fan 502 to shut down, the lower solenoid valve 501 to close, and the upper solenoid valve 501 to open. When the water is ready for use again, the personnel control the intake fan 502 to start working. This allows for the pre-storage of heat and automatic switching of the gas flow direction when the heat collection tube 201 cools down and can no longer be used at night. It also utilizes the pre-storage heat to heat the gas, improving the overall heat exchange utilization time and applicability, and reducing the phenomenon of only being usable during the day.

[0044] Furthermore, the air collection and outlet assembly includes a Y-shaped connector 401. The left end of the heat-conducting coil 7 and the left end of the air outlet connector 203 are both connected and fixed with a one-way valve 4 with the left side as the outlet. The right ends of the Y-shaped connector 401 are respectively connected and fixed with the left side of the corresponding one-way valve 4. The Y-shaped connector 401 and the one-way valve 4 cooperate to connect the left end of the Y-shaped connector 401 to the external air supply pipe. When hot air is discharged from the air outlet connector 203 or the heat-conducting coil 7, it will be supplied unidirectionally into the Y-shaped connector 401 through the corresponding one-way valve 4 to carry out the hot air supply work.

[0045] The usage method of this embodiment is as follows: When using the solar air heat exchanger, connect the left end of the Y-shaped pipe 401 to the external air supply pipe. The initial state is that the upper solenoid valve 501 is open. The PLC controller 6 is used to preset the minimum temperature value for controlling the upper solenoid valve 501 to close and the lower solenoid valve 501 to open. This temperature value is the temperature value of the heat collection tube 201 detected by the second temperature sensor 602. The air intake fan 502 is closed, the lower solenoid valve 501 is closed, and the upper solenoid valve 501 is opened according to the preset water temperature value transmitted by the first temperature sensor 601.

[0046] The solar collector tube 201 is used to absorb solar energy, concentrate heat, and heat the gas passing through it. The reflective prism 205 is used to reflect sunlight onto the solar collector tube 201 for better heat collection. The heat-conducting plate 301 is used to transfer a portion of the heat from the corresponding solar collector tube 201 into the water tank 1 to heat the water. The heat insulation sleeve 3 is used to insulate the heat-conducting plate 301 on the outside. The insulation layers 101 set on the inner and outer sides keep the heated water in the water tank 1 warm, so that the heat can be retained for a longer period of time for use. This achieves the effect of heating the water and reserving heat for later use, which is convenient for utilizing the heat of the water when there is no sunlight at night and the external solar collector tube 201 is cool.

[0047] During initial use, the air intake fan 502 blows air into the U-shaped pipe 5. The air is supplied into the air intake pipe 204 via the upper solenoid valve 501, and then sequentially enters multiple heat collector pipes 201 to be heated. The air is then discharged one-way through the air outlet pipe 203 and the upper one-way valve 4 into the Y-shaped pipe 401, thus supplying hot air. At night, without sunlight, the heat collector pipes 201 cool down. The first temperature sensor 601 and the second temperature sensor 602 detect the water temperature and the temperature of the heat collector pipes 201, respectively, and transmit the temperature values ​​to the PLC controller 6. When the temperature value of the heat collector pipes 201 detected by the second temperature sensor 602 is lower than the preset minimum value, the PLC controller 6 controls the upper solenoid valve 501 to close and the lower solenoid valve 502 to close. When 501 is turned on, the gas flow is redirected. At this time, the gas enters the heat-conducting coil 7 through the lower solenoid valve 501. Hot water heats the gas through the heat-conducting coil 7. The heated gas is discharged through the left end of the heat-conducting coil 7. When the water temperature received by the first temperature sensor 601 is lower than the preset minimum temperature value, the PLC controller 6 controls the intake fan 502 to turn off, the lower solenoid valve 501 to close, and the upper solenoid valve 501 to open. When the gas is used again during the day, the intake fan 502 is turned on by the operator. This achieves the effect of automatically switching the gas flow direction when the heat collection tube 201 cools down and can no longer be used at night, and using the pre-stored heat to heat the gas, thereby improving the overall heat exchange utilization time and applicability, and reducing the phenomenon of only being usable during the day.

[0048] The PLC controller 6, solenoid valve 501, air intake fan 502, first temperature sensor 601, and second temperature sensor 602 in this utility model are well-known to those skilled in the art and belong to conventional methods or common knowledge. Those skilled in the art can arbitrarily select and match them according to their needs or convenience. In addition, the PLC controller receives the temperature value transmitted by the second temperature sensor 602 and controls the upper solenoid valve 501 to close and the lower solenoid valve 501 to open when the preset minimum value is reached, and receives the temperature value transmitted by the first temperature sensor 601 and controls the upper solenoid valve 501 to open, the lower solenoid valve 501 to close, and the air intake fan 502 to close when the preset minimum value is reached. These are all programmable numerical control methods well-known to those skilled in the art. They all belong to conventional methods or common knowledge of programmers for programmable controllers and will not be described in detail here.

[0049] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A solar air heat exchange device, comprising a heat collection tube (201), characterized in that: include: The heat collection tubes (201) are arranged in multiple groups at equal intervals. A double helical inner core is fixedly installed inside each heat collection tube (201). An arc-shaped vent pipe (202) is fixedly connected between the ends of two adjacent heat collection tubes (201). An air inlet pipe (204) is fixedly connected to one end of the rightmost heat collection tube (201), and an air outlet pipe (203) is fixedly connected to one end of the leftmost heat collection tube (201). The water tank (1) has two supports (2) fixedly installed on its top, and the top of the supports (2) is fixedly connected to the bottom of the corresponding multiple arc-shaped vent pipes (202); The heat-conducting components are multiple and located in the water inside the water tank (1). The heat-conducting components are embedded and fixed in the top of the water tank (1) and fixedly connected to the bottom of the corresponding heat collection tube (201). The heat-conducting coil (7) is located inside the water tank (1), and both ends of it extend outside the water tank (1); The PLC controller (6) is fixedly installed on the right side of the water tank (1); The first temperature sensor (601) is fixedly installed on the right side of the water tank (1) and electrically connected to the PLC controller (6), and its detection end extends into the water tank (1); The second temperature sensor (602) is fixedly installed on the top of the water tank (1) and electrically connected to the PLC controller (6), and its detection end is in active contact with the outside of one of the heat collection tubes (201). The switching air supply flow assembly is fixed between the right end of the heat conduction coil (7) and the air inlet pipe (204), and is electrically connected to the PLC controller (6); The gas collection and outlet assembly is fixed between the gas outlet pipe (203) and the left end of the heat conduction coil (7).

2. The solar air heat exchanger according to claim 1, characterized in that: The heat-conducting component includes a heat-conducting plate (301) embedded and fixed on the top of the water tank (1). The top of the heat-conducting plate (301) is fixedly connected to the bottom of the corresponding heat-collecting pipe (201). A heat-insulating sleeve (3) located above the water tank (1) is adhesively fitted on the outside of the heat-conducting plate (301). The bottom of the heat-conducting plate (301) is located in the water inside the water tank (1).

3. The solar air heat exchanger according to claim 1, characterized in that: The switching air supply flow assembly includes an air intake fan (502) fixedly installed on the right side of the water tank (1). The air outlet of the air intake fan (502) is connected to a U-shaped pipe (5). The right end of the heat conduction coil (7) and the right end of the air intake pipe (204) are both connected to a solenoid valve (501). The two ends of the U-shaped pipe (5) are respectively connected to the right end of the corresponding solenoid valve (501). The two solenoid valves (501) and the air intake fan (502) are all electrically connected to the PLC controller (6).

4. The solar air heat exchanger according to claim 1, characterized in that: The gas collection and outlet assembly includes a Y-shaped connector (401). The left end of the heat-conducting coil (7) and the left end of the gas outlet connector (203) are both connected and fixed with a one-way valve (4) with the left side as the outlet. The two ends of the right side of the Y-shaped connector (401) are respectively connected and fixed with the left side of the corresponding one-way valve (4).

5. A solar air heat exchanger according to claim 1, characterized in that: The water tank (1) is fixedly connected to both the outer and inner sides with a heat insulation layer (101). The heat insulation layer (100) located on the outer side is movably sleeved on the outside of multiple heat-conducting plates (301), the first temperature sensor (601), and the second temperature sensor (602).

6. A solar air heat exchanger according to claim 1, characterized in that: Water valves are fixedly connected to the top and bottom of the rear side of the water tank (1), and a reflective prism (205) is fixedly installed on the top of the water tank (1) between two adjacent heat collection tubes (201).

7. A solar air heat exchanger according to claim 1, characterized in that: Both sides of the water tank (1) are provided with through holes that are fixedly connected to the outside of the heat-conducting coil (7).

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