Building outer wall energy-saving structure with efficient heat exchange function and method

By introducing a plate heat recovery device and a solar power supply system into the exterior wall of the building, combined with the rainwater collection and heating water tank, the problem of high heat exchange energy consumption in the exterior wall of the building is solved, efficient indoor and outdoor temperature regulation and air filtration are achieved, and energy consumption and water resource use are reduced.

CN120486620AInactive Publication Date: 2025-08-15HUBEI LICHEN TECHNOLOGY CO LTD +1
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510803383.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-17
Publication Date
2025-08-15
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

The existing building exterior wall heat exchange system has high energy consumption and poor indoor and outdoor temperature regulation, resulting in large energy consumption and uneco-friendly.

Method used

The building exterior wall structure with a plate heat recovery device is adopted, combined with a blower and an exhaust fan working together, and the heating water tank is collected by solar power supply and rainwater to achieve efficient heat exchange and air filtration, and indoor and outdoor air exchange is performed through the plate heat recovery device.

Benefits of technology

It realizes efficient indoor and outdoor heat exchange regulation, reduces energy consumption, saves water resources, has air filtration and cleaning functions, and reduces the need for frequent replacements.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120486620A_ABST
    Figure CN120486620A_ABST
Patent Text Reader

Abstract

The invention provides a building outer wall energy-saving structure and method with an efficient heat exchange function, and relates to the technical field of energy-saving buildings. The building outer wall energy-saving structure with the efficient heat exchange function comprises a building wall, a water tank is fixedly connected to the bottom end of the inner wall of the building wall, a partition plate is fixedly connected to the middle of the inner wall of the water tank, a hot water cavity is formed in one side of the partition plate, a cold water cavity is formed in the other side of the partition plate, and the water tank is fixedly connected with a plate type heat recoverer through a water conveying assembly. A supporting shell is fixedly connected to the outer wall of the plate type heat recoverer, second filter plates are arranged on the four sides of the outer wall of the supporting shell, a supporting frame is fixedly connected to the top end of the supporting shell, an air inlet assembly is installed at the upper end of the supporting frame, and an air supply pipe is fixedly connected to the bottom end of the supporting shell. The indoor temperature is effectively adjusted through natural resources, the air feeder and the exhaust fan work cooperatively, indoor air and outdoor air are subjected to heat exchange through the plate type heat recoverer, and efficient and energy-saving adjustment of indoor and outdoor heat exchange is achieved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of energy-saving building design, and in particular to an energy-saving structure and method for building exterior walls with a high-efficiency heat exchange function. Background Art

[0002] Energy conservation in buildings is an important development direction of the construction industry. Traditional building exterior walls have certain deficiencies in heat insulation and heat dissipation. For example, the self-heating efficiency of glass building curtain walls is low in hot weather, which will increase the indoor temperature and affect comfort. The metal heat exchange wall of the data room has a small contact area with the outside air. In order to solve these problems, a variety of building exterior wall technologies with heat exchange functions have emerged. For example, some of them use external heat exchange mechanisms and internal heat exchange mechanisms to use air flow and water flow to remove heat, thereby improving the heat dissipation efficiency of the building curtain wall.

[0003] At present, the existing technology of heat exchange on the exterior walls of buildings mostly achieves thermal insulation by installing thermal insulation panels. However, as the housing area increases, the indoor and outdoor temperature regulation is poor, and frequent replacement is required, which consumes a lot of energy and is not environmentally friendly, resulting in poor indoor and outdoor exchange effect of the building. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention provides an energy-saving structure for building exterior walls with efficient heat exchange function, which solves the problem of high energy consumption of heat exchange in building exterior walls.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: an energy-saving building exterior wall structure with efficient heat exchange function, comprising a building wall, wherein the bottom end of the inner wall of the building wall is fixedly connected to a water tank, the middle of the inner wall of the water tank is fixedly connected to a partition plate, one side of the partition plate is a hot water chamber, and the other side of the cold water chamber, the water tank is fixedly connected to a plate-type heat recovery device through a water delivery component, the outer wall of the plate heat recovery device is fixedly connected to a supporting shell, two filter plates are provided on four sides of the outer wall of the supporting shell, the top of the supporting shell is fixedly connected to a supporting frame, the upper end of the supporting frame is equipped with an air intake assembly, the bottom end of the supporting shell is fixedly connected to an air supply pipe, exhaust assemblies are installed on both sides of the supporting shell, the supporting shell is fixedly connected to a thermal insulation board on the side facing the outdoor, the outer wall of the thermal insulation board is fixedly connected to the bottom end of the building wall, the top of the thermal insulation board is fixedly connected to an air inlet plate, the top of the air inlet plate is equipped with an energy supply assembly, and the inner door is fixedly installed on the side of the building wall facing the indoor by bolts.

[0006] Preferably, the water delivery assembly includes a water pump fixedly connected to both sides of the inner wall of the water tank, the output end of the water pump on one side is fixedly connected to a hot water pipe, and the output end of the water pump on the other side is fixedly connected to a cold water pipe, and the hot water pipe and the cold water pipe are jointly fixedly connected to the inner wall of the plate heat recovery device.

[0007] Preferably, the thermal insulation board is fixedly connected to a water collecting plate on the outdoor side, the inner wall of the water collecting plate is provided with a downward water guide channel on the indoor side, the top of the water tank is provided with a water inlet on the outdoor side, and the water guide channel and the water inlet are interconnected.

[0008] Preferably, the air intake assembly includes a filter plate 1 located above the support frame, the outer wall of the filter plate 1 facing the outdoors is sleeved with a plug-in plate, the other end of the plug-in plate is fixedly connected to the inner wall of the building wall, and the filter plate 1 is located below the air intake plate.

[0009] Preferably, an air blower is fixedly mounted on the inner wall of the air supply pipe, and an adjusting blade is provided on the side of the air blower facing the indoor room. Both sides of the adjusting blade are rotatably connected to the inner wall of the air supply pipe, and an air outlet is provided on the inner wall of the inner door, and the other end of the air supply pipe is connected to the inner wall of the air outlet.

[0010] Preferably, the exhaust assembly includes a return air duct fixedly connected to one side of the inner wall of the inner door and a return air shell fixedly connected to the other side of the outer wall of the supporting shell, the return air duct is fixedly connected to a filter plate three facing the outdoor, the inner wall of the return air shell is sleeved on the outside of the filter plate two, an exhaust fan is fixedly installed on the inner wall of the return air shell, the other end of the return air shell is fixedly connected to an exhaust duct, the other end of the exhaust duct passes through the outer wall of the water collecting plate and extends to the outdoors.

[0011] Preferably, the energy supply component includes a solar panel fixedly connected to the top of the air inlet plate, the outer wall of the solar panel is fixedly connected to the inner wall of the building wall, the end of the solar panel facing the interior is fixedly connected to a battery pack, and the water pump and the exhaust fan are both electrically connected to the battery pack.

[0012] Preferably, a power supply heat conduction pipe is fixedly connected to the bottom end of the battery pack, and the other end of the power supply heat conduction pipe extends into the hot water cavity on the inner wall of the water tank.

[0013] The energy-saving method for building exterior walls with high-efficiency heat exchange function comprises the following steps:

[0014] Step 1: First, the building wall will serve as the outward-facing wall of the house during construction. When it rains, rainwater will flow downward through the water guide channel on the inner wall of the water collection plate to the hot water cavity and cold water cavity on both sides of the inner wall of the water tank for collection;

[0015] Step 2: On sunny days, the solar panels on top of the building wall absorb solar energy and convert it into electricity and store it in the battery pack. The battery pack transmits the electricity to the various electrical components inside the building wall through the power conversion element. The rainwater collected in the hot water chamber is first heated by the power transmission heat pipe;

[0016] Step 3: When the indoor and outdoor temperatures need to be adjusted, the supply fan and exhaust fan will be controlled to start working. The supply fan draws the cleaned air inside the supporting shell upwards, creating negative pressure inside it, and then the fresh air enters the building wall through the air inlet plate. After being filtered by the filter plate 1, it enters the interior of the supporting shell, is filtered and cooled by the plate-type heat recovery device, and is then discharged from the supply air duct into the room. On the other side, the indoor air is drawn by the exhaust fan and passes through the return air duct, filter plate 3, plate-type heat recovery device, return air shell and exhaust duct in sequence, and then discharged to the outside.

[0017] Step 4: When you need to clean the internal components, you can remove the bolts on the outer wall of the indoor side of the building wall and open the inner door to facilitate cleaning of the internal components.

[0018] Preferably, the water temperature in the hot water chamber in step 2 is 37 degrees Celsius.

[0019] The present invention provides an energy-saving structure and method for building exterior walls with efficient heat exchange function. It has the following beneficial effects:

[0020] 1. The present invention effectively regulates the indoor temperature by utilizing natural resources. The supply fan and exhaust fan work together to exchange heat between indoor and outdoor air through the plate-type heat recovery device, achieving efficient and energy-saving regulation of indoor and outdoor heat exchange, while also having air filtration and cleaning functions.

[0021] 2. The present invention utilizes solar energy for energy supply. Solar panels convert solar energy into electrical energy and store it in battery packs to supply power to electrical components, thereby reducing building energy consumption and achieving energy saving.

[0022] 3. The present invention introduces rainwater into the water tank through the water collecting plate. On sunny days, the rainwater in the hot water chamber is heated so that the hot and cold water on both sides of the water tank can be used for heat exchange in the plate heat recovery device. No additional water source is required, thus saving water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a three-dimensional schematic diagram of the outdoor of the present invention;

[0024] Figure 2 It is a three-dimensional schematic diagram of the interior surface of the present invention;

[0025] Figure 3 This is a schematic diagram of the interior of a building wall according to the present invention;

[0026] Figure 4 is a schematic cross-sectional view of the support shell of the present invention;

[0027] Figure 5 This is a schematic structural diagram of a plate-type heat recovery device according to the present invention;

[0028] Figure 6Schematic diagram of the return air duct of the present invention;

[0029] Figure 7 A schematic diagram of the blower of the present invention;

[0030] Figure 8 Schematic diagram of the water collecting plate of the present invention;

[0031] Figure 9 Schematic diagram of the partition plate of the present invention.

[0032] Among them, 1. building wall; 2. exhaust duct; 3. water collecting plate; 4. air inlet plate; 5. solar panel; 6. inner door; 7. return air duct; 8. air outlet; 9. adjusting fan blades; 10. supporting shell; 11. plug-in board; 12. filter plate 1; 13. supporting frame; 14. power supply heat pipe; 15. hot water pipe; 16. air supply fan; 17. water tank; 18. air supply duct; 19. return air shell; 20. filter plate 2; 21. plate heat recovery device; 22. cold water pipe; 23. water pump; 24. filter plate 3; 25. exhaust fan; 26. battery pack; 27. water guide channel; 28. thermal insulation board; 29. water inlet; 30. partition plate. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0034] Example:

[0035] like Figure 1 、 Figure 5 and Figure 9 As shown, an embodiment of the present invention provides an energy-saving structure for a building exterior wall with a high-efficiency heat exchange function, including a building wall 1, a water tank 17 is fixedly connected to the bottom end of the inner wall of the building wall 1, a partition plate 30 is fixedly connected to the middle of the inner wall of the water tank 17, one side of the partition plate 30 is a hot water chamber, and the other side is a cold water chamber, the water tank 17 is fixedly connected to a plate-type heat recovery device 21 through a water delivery component, the water delivery component includes a water pump 23 fixedly connected to both sides of the inner wall of the water tank 17, the output end of the water pump 23 on one side is fixedly connected to a hot water pipe 15, and the output end of the water pump 23 on the other side is fixedly connected to a cold water pipe 22, the hot water pipe 15 and the cold water pipe 22 are fixedly connected to the inner wall of the plate-type heat recovery device 21, the heat preservation and insulation board 28 is fixedly connected to a water collecting plate 3 on the side facing the outdoors, the inner wall of the water collecting plate 3 is provided with a downward water guide channel 27 on the side facing the indoors, the top of the water tank 17 is provided with a water inlet 29 on the side facing the outdoors, and the water guide channel 27 and the water inlet 29 are connected to each other;

[0036] Specifically, the thermal insulation board 28 is made of polystyrene foam board with good thermal insulation performance, low price and easy processing. A small groove is opened on the upper side of the water collecting plate 3 to facilitate rainwater to enter the pipe and flow along the water guide channel 27 into the water inlet 29 of the water tank 17 for collection. The material of the partition plate 30 is also made of polystyrene foam board to prevent the rainwater in the cold water chamber and the hot water chamber from transferring heat to each other. The plate heat recovery device 21 is composed of many plates, with a small size and a small footprint. The internal frame structure is equipped with a sealing gasket. The frame is strong and stable, and the sealing gasket can fill the gap between the plate and the frame to effectively prevent air leakage.

[0037] The outer wall of the plate heat recovery device 21 is fixedly connected to the support shell 10, and filter plates 20 are opened on the four sides of the outer wall of the support shell 10. The top of the support shell 10 is fixedly connected to the support frame 13, and the upper end of the support frame 13 is equipped with an air intake assembly, and the bottom end of the support shell 10 is fixedly connected to the air supply pipe 18. Exhaust assemblies are installed on both sides of the support shell 10. The air intake assembly includes a filter plate 12 located above the support frame 13, and the outer wall of the filter plate 12 facing the outdoor side is sleeved with a plug-in plate 11. The other end of the plug-in plate 11 is fixedly connected to the inner wall of the building wall 1. The filter plate 12 is located below the air inlet plate 4, and the inner wall of the air supply pipe 18 is fixedly equipped with a blower 16. The blower 1 6 is provided with an adjusting fan blade 9 on the indoor side, and both sides of the adjusting fan blade 9 are rotatably connected to the inner wall of the air supply pipe 18. An air supply port 8 is provided on the inner wall of the inner door 6, and the other end of the air supply pipe 18 is interconnected with the inner wall of the air supply port 8. The exhaust assembly includes a return air duct 7 fixedly connected to one side of the inner wall of the inner door 6 and a return air shell 19 fixedly connected to the other side of the outer wall of the support shell 10. The return air duct 7 is fixedly connected to the filter plate three 24 on the outdoor side, the inner wall of the return air shell 19 is sleeved on the outside of the filter plate two 20, and an exhaust fan 25 is fixedly installed on the inner wall of the return air shell 19. The other end of the return air shell 19 is fixedly connected to the exhaust pipe 2, and the other end of the exhaust pipe 2 passes through the outer wall of the water collecting plate 3 and extends to the outdoors;

[0038] Specifically, the adjustable fan blade 9 is connected to the inner wall of the air supply pipe 18 through a damping rotating rod. The air supply direction can be changed by moving it up and down. The connections between the four sides of the support shell 10 and the return air shell 19, the support frame 13 and the air supply pipe 18 are all designed with sealing gaskets to prevent gas leakage in actual use. The support shell 10 itself is an assembled frame structure, which is assembled by bolt plates and other structures for easy disassembly.

[0039] The support shell 10 is fixedly connected to a thermal insulation board 28 on the side facing outdoors, the outer wall of the thermal insulation board 28 is fixedly connected to the bottom end of the building wall 1, the top of the thermal insulation board 28 is fixedly connected to an air inlet plate 4, the top of the air inlet plate 4 is installed with an energy supply component, the building wall 1 is fixedly installed with an inner door 6 on the side facing indoors by bolts, the energy supply component includes a solar panel 5 fixedly connected to the top of the air inlet plate 4, the outer wall of the solar panel 5 is fixedly connected to the inner wall of the building wall 1, and the end of the solar panel 5 facing indoors is fixedly connected to a battery pack 26, the water pump 23 and the air blower 16 and exhaust fan 25 are all electrically connected to the battery pack 26, the bottom end of the battery pack 26 is fixedly connected to a power supply heat pipe 14, and the other end of the power supply heat pipe 14 extends to the hot water cavity on the inner wall of the water tank 17;

[0040] Specifically, energy is transmitted between the solar panels 5 and the battery pack 26 through electric wires. The upper side of the power transmission heat pipe 14 is a shell that protects the circuit. The part located in the water tank 17 is a heat-conducting metal column. The connection lines between the electrical components and the battery pack 26 are hidden in the inner wall of the building wall 1, and sealing strips are provided at the connection between the inner door 6 and the building wall 1.

[0041] The energy-saving method for building exterior walls with high-efficiency heat exchange function comprises the following steps:

[0042] Step 1: First, the building wall 1 will serve as the outward-facing wall of the house during construction. When it rains, rainwater will flow downward through the water guide channel 27 on the inner wall of the water collection plate 3 to the hot water cavity and cold water cavity on both sides of the inner wall of the water tank 17 for collection;

[0043] Step 2: On sunny days, the solar panels 5 on top of the building wall 1 absorb solar energy and convert it into electrical energy for storage in the battery pack 26. The battery pack 26 transmits the electrical energy to the various electrical components inside the building wall 1 through the power conversion element. The rainwater collected in the hot water chamber is first heated by the power transmission heat pipe 14. The water temperature in the hot water chamber is 37 degrees Celsius.

[0044] Step 3: When the indoor and outdoor temperatures need to be adjusted, the supply fan 16 and the exhaust fan 25 are controlled to start working. The supply fan 16 draws the cleaned air inside the supporting shell 10 upward, creating a negative pressure inside the supporting shell, and then the fresh air enters the building wall 1 through the air inlet plate 4. After being filtered by the filter plate 12, it enters the interior of the supporting shell 10, is filtered and cooled by the plate-type heat recovery device 21, and is then discharged from the air supply duct 18 into the room. On the other side, the indoor air is drawn by the exhaust fan 25 and passes through the return air duct 7, the filter plate 3 24, the plate-type heat recovery device 21, the return air shell 19 and the exhaust duct 2 in sequence, and is then discharged to the outside.

[0045] Step 4: When it is necessary to clean the internal components, the bolts on the outer wall of the indoor side of the building wall 1 can be removed and the inner door 6 can be opened to facilitate cleaning of the internal components.

[0046] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An energy-saving building exterior wall structure with efficient heat exchange function, characterized in that: The invention comprises a building wall (1), wherein the bottom end of the inner wall of the building wall (1) is fixedly connected to a water tank (17), the middle part of the inner wall of the water tank (17) is fixedly connected to a partition plate (30), one side of the partition plate (30) is a hot water chamber, and the other side is a cold water chamber, the water tank (17) is fixedly connected to a plate-type heat recovery device (21) through a water delivery component, the outer wall of the plate-type heat recovery device (21) is fixedly connected to a support shell (10), the outer wall of the support shell (10) is provided with two filter plates (20), the top of the support shell (10) is fixedly connected to a support frame (13), and the An air intake assembly is installed at the upper end of the support frame (13), an air supply pipe (18) is fixedly connected to the bottom end of the support shell (10), exhaust assemblies are installed on both sides of the support shell (10), a heat preservation and heat insulation board (28) is fixedly connected to the side of the support shell (10) facing the outdoors, an outer wall of the heat preservation and heat insulation board (28) is fixedly connected to the bottom end of the building wall (1), an air intake plate (4) is fixedly connected to the top end of the heat preservation and heat insulation board (28), an energy supply assembly is installed on the top end of the air intake plate (4), and an inner door (6) is fixedly installed on the side of the building wall (1) facing the indoors by bolts.

2. The energy-saving building exterior wall structure with high-efficiency heat exchange function according to claim 1, characterized in that: The water delivery assembly comprises a water pump (23) fixedly connected to both sides of the inner wall of the water tank (17), the output end of the water pump (23) on one side being fixedly connected to a hot water pipe (15), and the output end of the water pump (23) on the other side being fixedly connected to a cold water pipe (22), and the hot water pipe (15) and the cold water pipe (22) being fixedly connected to the inner wall of the plate-type heat recovery device (21).

3. The energy-saving building exterior wall structure with high-efficiency heat exchange function according to claim 2, characterized in that: The heat-insulating plate (28) is fixedly connected to a water collecting plate (3) on the side facing the outside, and a downward water guide channel (27) is provided on the inner wall of the water collecting plate (3) on the side facing the inside of the room. A water inlet (29) is provided on the top of the water tank (17) on the side facing the outside of the room, and the water guide channel (27) and the water inlet (29) are interconnected.

4. The energy-saving building exterior wall structure with high-efficiency heat exchange function according to claim 1, characterized in that: The air intake assembly includes a filter plate (12) located above the support frame (13), and the filter plate (12) is sleeved with a plug-in plate (11) on the outer wall facing the outside of the room, and the other end of the plug-in plate (11) is fixedly connected to the inner wall of the building wall (1), and the filter plate (12) is located below the air intake plate (4).

5. The energy-saving building exterior wall structure with high-efficiency heat exchange function according to claim 4, characterized in that: An air blower (16) is fixedly mounted on the inner wall of the air supply pipe (18); an adjusting blade (9) is provided on the side of the air supply pipe (16) facing the indoor room; both sides of the adjusting blade (9) are rotatably connected to the inner wall of the air supply pipe (18); an air supply port (8) is provided on the inner wall of the inner door (6); and the other end of the air supply pipe (18) is connected to the inner wall of the air supply port (8).

6. The energy-saving building exterior wall structure with high-efficiency heat exchange function according to claim 3, characterized in that: The exhaust assembly comprises a return air duct (7) fixedly connected to one side of the inner wall of the inner door (6) and a return air shell (19) fixedly connected to the other side of the outer wall of the support shell (10); the return air duct (7) is fixedly connected to a filter plate three (24) on the side facing the outside of the room; the inner wall of the return air shell (19) is sleeved on the outside of the filter plate two (20); an exhaust fan (25) is fixedly installed on the inner wall of the return air shell (19); the other end of the return air shell (19) is fixedly connected to an exhaust duct (2); the other end of the exhaust duct (2) passes through the outer wall of the water collecting plate (3) and extends to the outside of the room.

7. The energy-saving building exterior wall structure with high-efficiency heat exchange function according to claim 6, characterized in that: The energy supply assembly comprises a solar panel (5) fixedly connected to the top of the air inlet plate (4); the outer wall of the solar panel (5) is fixedly connected to the inner wall of the building wall (1); the end of the solar panel (5) facing the interior is fixedly connected to a battery pack (26); the water pump (23) and the exhaust fan (25) are both electrically connected to the battery pack (26).

8. The energy-saving building exterior wall structure with high-efficiency heat exchange function according to claim 7, characterized in that: The bottom end of the battery pack (26) is fixedly connected to a power supply heat conduction pipe (14), and the other end of the power supply heat conduction pipe (14) extends into the hot water cavity on the inner wall of the water tank (17).

9. A method for energy saving of building exterior walls with a high-efficiency heat exchange function, using the energy-saving structure for building exterior walls with a high-efficiency heat exchange function as claimed in any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: First, the building wall (1) will serve as the outward-facing wall of the house during construction. When it rains, rainwater will flow downward through the water guide channel (27) on the inner wall of the water collecting plate (3) to the hot water cavity and the cold water cavity on both sides of the inner wall of the water tank (17) to collect the rainwater. Step 2: On sunny days, the solar panels (5) on the top of the building wall (1) absorb solar energy and convert it into electrical energy and store it in the battery pack (26). The battery pack (26) transmits the electrical energy to various electrical components inside the building wall (1) through the power conversion element, and first heats the rainwater collected in the hot water chamber through the power transmission heat pipe (14); Step 3: When the indoor and outdoor temperatures need to be adjusted, the air supply fan (16) and the exhaust fan (25) are controlled to start working. The air supply fan (16) draws the cleaned air inside the supporting shell (10) upwards, generating negative pressure inside the supporting shell, and then the fresh air enters the building wall (1) through the air inlet plate (4), and then enters the interior of the supporting shell (10) after being filtered by the filter plate 1 (12), and is filtered and cooled by the plate type heat recovery device (21) before being discharged from the air supply pipe (18) into the room. The air in the other side of the room is drawn by the exhaust fan (25) and passes through the return air pipe (7), the filter plate 3 (24), the plate type heat recovery device (21), the return air shell (19) and the exhaust pipe (2) in sequence, and then is discharged to the outside. Step 4: When it is necessary to clean the internal components, the bolts on the outer wall of the indoor side of the building wall (1) can be removed and the inner door (6) can be opened to facilitate cleaning of the internal components.

10. The energy-saving method for building exterior walls with high-efficiency heat exchange function according to claim 9, characterized in that: The water temperature in the hot water chamber in step 2 is 37 degrees Celsius.