Energy-saving air conditioner ventilation device

Abstract

The utility model belongs to air conditioning ventilation technical field, concretely relates to a kind of energy-saving air conditioning ventilation device, including filter mechanism and split heat recovery mechanism, the side of filter mechanism away from split heat recovery mechanism is fixedly connected with pipeline one, the side of split heat recovery mechanism away from filter mechanism is fixedly connected with pipeline two, and one side of pipeline two fixed on the split heat recovery mechanism is equipped with circulating pipeline, the side of pipeline two away from circulating pipeline is equipped with shunt pipeline, and the connecting place of pipeline two inside close to pipeline two and shunt pipeline is equipped with heat exchange mechanism, the utility model can control the path of the new air inhaled and the operation of split heat recovery mechanism by the value of indoor and outdoor temperature difference according to different seasonal conditions by multiple temperature sensors detecting the air temperature of different regions.

Description

Technical Field

[0001] This utility model belongs to the field of air conditioning and ventilation technology, and specifically relates to an energy-saving air conditioning and ventilation device. Background Technology

[0002] Currently, many digital split-type circulating heat recovery systems used in cold or frigid regions require an electric heating or high-temperature hot water coil preheating section. Because the outdoor fresh air temperature is relatively low, even after split heat recovery, the fresh air temperature still needs to be preheated before passing through the subsequent hot and cold water pipes to prevent the water pipes from freezing and cracking. This requires a large amount of heat energy to preheat the fresh air. When the indoor air needs to be cooled, the fresh air needs to be cooled again, which will cause energy waste. However, if a preheating section is not set up, there is a safety issue of water pipes freezing and cracking. Utility Model Content

[0003] This utility model provides an energy-saving air conditioning ventilation device to address the above-mentioned problems.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: An energy-saving air conditioning ventilation device includes a filter mechanism and a split heat recovery mechanism. A first pipe is fixedly connected to the side of the filter mechanism away from the split heat recovery mechanism, and a second pipe is fixedly connected to the side of the split heat recovery mechanism away from the filter mechanism. A circulation pipe is installed on one side of the second pipe fixed to the split heat recovery mechanism, and a diversion pipe is installed on the side of the second pipe away from the circulation pipe. The diversion pipe and the second pipe are interconnected. One end of the circulation pipe is interconnected with the split heat recovery mechanism, and the other end of the circulation pipe is interconnected with the end of the second pipe away from the split heat recovery mechanism. A heat exchange mechanism is provided inside the second pipe near the connection between the second pipe and the diversion pipe. The diversion pipe does not contact the heat exchange mechanism. Solenoid valves are installed inside pipe one, inside the branch pipe near its connection with pipe two, and inside pipe two on the side away from the split heat recovery mechanism. Temperature sensors with the same structure are installed inside pipe one, inside pipe two on the side near the split heat recovery mechanism, inside pipe two near its connection with the circulation pipe, and at the end of the circulation pipe near pipe two. The solenoid valves and the temperature sensors are electrically connected to the same processor, and the processor is electrically connected to the split heat recovery mechanism.

[0005] Furthermore, the filtration mechanism includes a box fixedly connected to one end of the pipeline near the split heat recovery mechanism. Branch pipes are fixedly connected to both ends of the side wall of the box away from the pipeline along the length of the box. The ends of the branch pipes away from the box are fixedly connected to the split heat recovery mechanism. A collection box is installed at the bottom of each branch pipe. The box has a hollow structure and is interconnected with the pipeline and the two branch pipes. A filter screen is installed inside the branch pipe and can slide along the length of the branch pipe. A vertically arranged diversion plate is rotatably connected to the middle of the side of the box away from the pipeline. The bottom end of the diversion plate away from the pipeline rotates to the middle of the bottom inner wall of the box away from the pipeline.

[0006] Furthermore, a gear is coaxially fixedly connected to the top of the diversion plate. The end of the gear away from the diversion plate rotates on the inner wall of the top of the housing. Both sides of the gear along the length of the housing are equipped with identical limiting wheels. The same belt is fitted in the groove of each of the two limiting wheels. The side wall of the belt near the gear is the tooth side, which has several evenly distributed teeth. The gear meshes with the tooth side of the belt. The end of the belt extends towards the split heat recovery mechanism and into the side wall of the branch pipe. A power storage mechanism is fixed to the end of the belt. The power storage mechanism is located inside the top wall of the branch pipe and is connected to the filter screen.

[0007] Furthermore, the energy storage mechanism installed inside the branch pipe includes a rack rod fixedly connected to the top of the filter screen sidewall. A storage groove is provided on the inner wall of the top of the branch pipe. The rack rod slides on the inner sidewall of the storage groove. A gear two is meshed on the side of the rack rod away from the filter screen. The gear two is rotatably installed in the storage groove. A rack rod with the same structure is meshed on the side of the gear two away from the filter screen. A sliding plate two is fixedly connected to the sidewall of the rack rod away from the filter screen.

[0008] Furthermore, the second sliding plate slides horizontally on the inner wall of the storage slot one away from the second gear. The first sliding plate slides on the side wall of the second sliding plate near the opening of the storage slot one. The first sliding plate is fixed to the inner wall of the storage slot one. The third sliding plate slides on the top of the second sliding plate away from the first sliding plate. The middle of the end of the second sliding plate away from the first sliding plate is fixedly connected to the middle of the belt side. The middle of the upper surface of the third sliding plate is fixedly connected to the middle of the belt side. The ends of the first and second limiting blocks away from the first sliding plate are both inclined surfaces, and the inclined surfaces of the first and second limiting blocks face each other towards the side that is close to each other.

[0009] Further, a connecting member is fixed on one side wall of the third slide plate close to the belt. The connecting member is in a shape of "冂". The first limiting block is located in the notch of the connecting member and they do not contact each other. The connecting member is fixedly connected to the belt. The first limiting block is located between the belt and the third slide plate. A horizontally arranged reset spring is fixed at the bottom end of the side wall of the first limiting block close to the third slide plate. The end of the reset spring far from the first limiting block is fixedly connected to the third slide plate.

[0010] Further, the same fixing frame is fixedly connected to the side walls on both sides of the first slide plate along its width direction. The fixing frame is arranged avoiding the second slide plate and the third slide plate. The middle part of the fixing frame is located on the side of the third slide plate far from the second slide plate and the opening of the fixing frame faces the second slide plate. A horizontally arranged rotating rod is rotated in the middle part of the fixing frame. The length direction of the rotating rod extends towards the first limiting block. The end of the rotating rod close to the first limiting block is a slope. A stop block is arranged on the side wall of the rotating rod close to the third slide plate. The side wall of the stop block far from the second limiting block is a slope and the inclination angle of the slope of the stop block is complementary to the inclination angle of the slope at the end of the second limiting block.

[0011] Further, sliders are fixed at both the top end and the bottom end of the filter screen. The sliders slide on the inner side wall of the branch pipe. The sliders enable the filter screen to slide in the branch pipe along the length direction of the branch pipe. A cleaning mechanism is arranged on the side of the filter screen close to the box body. The cleaning mechanism includes a vertically arranged screw rod rotatably connected to the inner wall of the bottom of the branch pipe and a vertically arranged sliding rod fixedly connected to the inner wall of the bottom of the branch pipe. The screw rod and the sliding rod are respectively arranged on both sides of the filter screen. The same cleaning plate slides on the outer arc walls of the screw rod and the sliding rod. A channel one is penetrated and opened at the position corresponding to the cleaning plate on the inner wall of the branch pipe. The channel one is connected to the collection box.

[0012] Compared with the prior art, the utility model has the following advantages: The utility model detects the air temperature in different areas through multiple temperature sensors, and can control the flow path of the inhaled fresh air and the operation of the split heat recovery mechanism according to the value of the indoor and outdoor temperature difference in different seasons. That is, in spring, summer and autumn, when the indoor and outdoor temperature difference is small, the split heat recovery mechanism stops operating to reduce energy consumption. In winter, if cooling is required indoors, the fresh air bypasses the heat exchange mechanism through the shunt pipeline, thus avoiding freezing of the pipeline, saving energy consumption and protecting the pipeline at the same time.

[0013] The utility model filters the fresh air through the filtering mechanism. When the filter screen is full and blocked, the filter screen will move under the blowing of the fresh air, and then drive the drainage plate to rotate to switch the flow direction of the fresh air, and switch to the filter screen on the other side for filtering. That is, continuous filtering operation is realized, and at the same time, the continuous supply of air is ensured. During this period, the filter screen on the other side is cleaned by the cleaning mechanism, ensuring the filtering effect of the filter screen and avoiding frequent maintenance by staff. Description of the Drawings

[0014] Figure 1 This is a connection diagram of the present invention; Figure 2 This is a schematic diagram of the filter mechanism of this utility model; Figure 3 This is a schematic diagram of the filter mechanism of this utility model; Figure 4 Cross-sectional view of the internal structure of the filter mechanism of this utility model Figure 1 ; Figure 5 Cross-sectional view of the internal structure of the filter mechanism of this utility model Figure 2 ; Figure 6 This utility model Figure 5 Enlarged view of the structure at point A in the middle circle; Figure 7 This is a schematic diagram of the energy storage mechanism of this utility model; Figure 8 This is a schematic diagram of the cleaning mechanism of this utility model.

[0015] In the diagram, 10 is the filtration mechanism; 11 is the split heat recovery mechanism; 12 is the solenoid valve; 13 is the temperature sensor; 14 is the heat exchange mechanism; 15 is the circulation pipe; 16 is the diversion pipe; 17 is the branch pipe; 18 is the collection box; 19 is the filter screen; 20 is the diversion plate; 21 is the gear one; 22 is the belt; 23 is the limit wheel; 24 is the rack and pinion; 25 is the gear two; 30 is the slide plate one; 31 is the slide plate two; 32 is the slide plate three; 33 is the limit block one; 34 is the return spring; 35 is the limit block two; 36 is the rotating rod; 40 is the lead screw; 41 is the slide rod; and 42 is the cleaning plate. Detailed Implementation

[0016] To further illustrate the technical solution of this utility model, the following embodiments will be used to further explain this utility model.

[0017] like Figures 1 to 8 As shown, an energy-saving air conditioning ventilation device includes a filter mechanism 10 and a split heat recovery mechanism 11. A pipe is fixedly connected to the side of the filter mechanism 10 away from the split heat recovery mechanism 11, and a pipe is fixedly connected to the side of the split heat recovery mechanism 11 away from the filter mechanism 10. A circulation pipe 15 is installed on one side of the pipe 2 fixed to the split heat recovery mechanism 11, and a diversion pipe 16 is installed on the side of the pipe 2 away from the circulation pipe 15. The diversion pipe 16 and the pipe 2 are interconnected. One end of the circulation pipe 15 is interconnected with the split heat recovery mechanism 11, and the other end of the circulation pipe 15 is interconnected with the end of the pipe 2 away from the split heat recovery mechanism 11. A heat exchange mechanism 14 is provided inside the pipe 2 near the connection between the pipe 2 and the diversion pipe 16. The diversion pipe 16 does not contact the heat exchange mechanism 14. Solenoid valves 12 are provided inside pipe one, inside the branch pipe 16 near its connection with pipe two, and inside pipe two on the side away from the split heat recovery mechanism 11. Temperature sensors 13 with the same structure are provided inside pipe one, inside pipe two on the side near the split heat recovery mechanism 11, inside pipe two near its connection with circulation pipe 15, and at the end of circulation pipe 15 near pipe two. The solenoid valves 12 and the temperature sensors 13 are electrically connected to the same processor, and the processor is electrically connected to the split heat recovery mechanism 11.

[0018] The filtration mechanism 10 includes a housing fixedly connected to one end of the pipeline near the split heat recovery mechanism 11. Branch pipes 17 are fixedly connected to both ends of the side wall of the housing away from the pipeline along the length of the housing. The end of each branch pipe 17 away from the housing is fixedly connected to the split heat recovery mechanism 11. A collection box 18 is installed at the bottom of each branch pipe 17. The housing is a hollow structure, and the housing, pipeline, and the two branch pipes 17 are interconnected. A filter screen 19 is installed inside each branch pipe 17, and the filter screen 19 can slide along the length of the branch pipe 17. A vertically arranged diversion plate 20 is rotatably connected to the middle of the side of the housing away from the pipeline. The bottom end of the diversion plate 20 away from the pipeline is rotatably located on the middle of the bottom inner wall of the housing away from the pipeline. A gear 21 is coaxially fixed to the top of the diversion plate 20. The end of the gear 21 away from the diversion plate 20 rotates on the inner wall of the top of the housing. Both sides of the gear 21 along the length of the housing are equipped with identical limiting wheels 23. The same belt 22 is fitted into the grooves of both limiting wheels 23. The side wall of the belt 22 closest to the gear 21 is the tooth side, with several evenly distributed teeth. The gear 21 meshes with the tooth side of the belt 22. The end of the belt 22 extends past the limiting wheel 23 towards the split heat recovery mechanism 11 and into the inner wall of the branch pipe 17. A power storage mechanism is fixed to the end of the belt 22, located inside the top wall of the branch pipe 17. The power storage mechanism is connected to the filter screen 19. The energy storage mechanism inside the branch pipe 17 includes a rack 24 fixedly connected to the top of the side wall of the filter screen 19. A storage groove is provided on the inner wall of the top of the branch pipe 17. The rack 24 slides on the inner side wall of the storage groove. A gear 25 is meshed on the side of the rack 24 away from the filter screen 19. The gear 25 is rotatably disposed in the storage groove. The rack 24 with the same structure is meshed on the side of the gear 25 away from the filter screen 19. A sliding plate 31 is fixedly connected to the side wall of the rack 24 away from the filter screen 19. The sliding plate 31 slides horizontally on the inner side wall of the storage groove away from the gear 25. A sliding plate 30 slides on the side wall of the sliding plate 31 near the opening of the storage groove. The sliding plate 30 is fixed to the inner side wall of the storage groove. A third slide plate 32 slides on the top of the second slide plate 31 away from the first slide plate 30. A first limiting block 33 is fixedly connected to the middle of the end of the second slide plate 31 away from the first slide plate 30, near the belt 22. A second limiting block 35 is fixedly connected to the middle of the upper surface of the third slide plate 32, near the belt 22. The ends of both the first limiting block 33 and the second limiting block 35 away from the first slide plate 30 are inclined surfaces, and the inclined surfaces of the first limiting block 33 and the second limiting block 35 face each other towards the side closest to each other. A connector is fixed to the side wall of the third slide plate 32 near the belt 22. The connector is U-shaped, and the first limiting block 33 is located within the recess of the connector without contacting it. The connector is fixedly connected to the belt 22, and the first limiting block 33 is located between the belt 22 and the third slide plate 32.A horizontally arranged return spring 34 is fixed to the bottom of the side wall of the limiting block 33 near the sliding plate 32. The end of the return spring 34 away from the limiting block 33 is fixedly connected to the sliding plate 32. The same fixing frame is fixedly connected to both sides of the sliding plate 30 along its width direction. The fixing frame is positioned away from the sliding plates 31 and 32. The middle part of the fixing frame is located on the side of the sliding plate 32 away from the sliding plate 31, and the opening of the fixing frame faces the sliding plate 31. A horizontally arranged rotating rod 36 is rotatably mounted in the middle of the fixing frame. The length direction of the rotating rod 36 extends towards the limiting block 33. The end of the rotating rod 36 near the limiting block 33 is inclined. A stop is provided on the side wall of the rotating rod 36 near the sliding plate 32. The side wall of the stop away from the limiting block 35 is inclined, and the inclination angle of the inclined surface of the stop and the inclined surface of the end of the limiting block 35 are complementary.

[0019] The filter screen 19 has sliders fixed at both its top and bottom ends. The sliders slide on the inner wall of the branch pipe 17, allowing the filter screen 19 to slide along the length of the branch pipe 17. A cleaning mechanism is provided on the side of the filter screen 19 near the housing. The cleaning mechanism includes a vertically arranged lead screw 40 rotatably connected to the inner wall of the bottom of the branch pipe 17 and a vertically arranged slide rod 41 fixedly connected to the inner wall of the bottom of the branch pipe 17. The lead screw 40 and the slide rod 41 are respectively arranged on both sides of the filter screen 19. The same cleaning plate 42 slides on the outer arc wall of both the lead screw 40 and the slide rod 41. A channel is opened through the inner wall of the branch pipe 17 at the position corresponding to the cleaning plate 42. The channel is connected to the collection box 18.

[0020] Core structure and connection relationships The filter unit 10 is connected to duct 1 on one side (for connecting to the outside and drawing in fresh air), and to the split heat recovery unit 11 on the other side via branch pipe 17; the split heat recovery unit 11 is connected to duct 2 on one side (for connecting to the indoor and sending fresh air into the indoor), and circulation duct 15 (for exhausting indoor air) and diversion duct 16 (only connected to duct 2, for auxiliary supply of fresh air) are connected to duct 2.

[0021] A heat exchange mechanism 14 is installed inside pipe 2 near the branch pipe 16, and the branch pipe 16 does not contact the heat exchange mechanism 14; solenoid valves 12 are installed in pipe 1, near pipe 2 in branch pipe 16, and inside pipe 2 (away from the split heat recovery mechanism 11) to control the intake and flow direction of fresh air; temperature sensors 13 are installed in pipe 1, near the split heat recovery mechanism 11 in pipe 2, near the circulation pipe 15 in pipe 2, and inside the circulation pipe 15 (near pipe 2) to detect the outdoor temperature, the filtered fresh air temperature, the incoming fresh air temperature, and the indoor temperature, respectively.

[0022] All solenoid valves 12 and temperature sensors 13 are electrically connected to the same processor, which is also electrically connected to the separate heat recovery mechanism 11.

[0023] Key Functionality Implementation Fresh air flow control: Solenoid valve 12 in duct 1 controls the intake of fresh air, and solenoid valve 12 in duct 2 near the branch pipe 16 works in conjunction with the branch pipe 16 near the branch pipe 2 to control the direction of fresh air flow. When solenoid valve 12 in branch pipe 16 near the branch pipe 2 is open and solenoid valve 12 in duct 2 is closed, fresh air enters the room directly through branch pipe 16 without being heated by heat exchange mechanism 14; when solenoid valve 12 in branch pipe 16 near the branch pipe 2 is closed and solenoid valve 12 in duct 2 is open, fresh air enters the room after heat exchange through heat exchange mechanism 14 in branch pipe 2.

[0024] Heat recovery control: When the temperature difference between the detection signal of temperature sensor 13 in pipe 1 (detecting outdoor temperature) and the detection signal of temperature sensor 13 in circulation pipe 15 (detecting indoor temperature) is ≥5℃, the processor starts the split heat recovery mechanism 11. When indoor air is discharged through circulation pipe 15, it exchanges heat with the filtered fresh air at the split heat recovery mechanism 11, reducing the energy consumption of heat exchange mechanism 14; when the temperature difference is <5℃, heat recovery is meaningless and the mechanism does not start.

[0025] Filtration mechanism working principle When the filter 19 filtering the fresh air is blocked, the fresh air pushes it to slide backward in the branch pipe 17. As the filter 19 slides, it drives the corresponding rack 24 to move backward. The rack 24 drives the gear 25 to rotate, and the gear 25 drives the rack 24 on the other side to move forward. The rack 24 drives the slide plate 31 to move, which in turn drives the limit block 33 to move. As the limit block 33 moves, the return spring 34 is compressed. When the limit block 33 contacts the rotating rod 36, it compresses the rotating rod 36. After being lifted, the stop on the rotating rod 36 releases the restriction on the second limiting block 35, the compression potential energy of the return spring 34 is released, driving the third sliding plate 32 to move forward, which in turn pulls the belt 22 to move forward. Through the meshing relationship between the belt 22 and the first gear 21, the guide plate 20 is driven to complete the reversing operation. At the same time, the belt 22 on the other side drives the third sliding plate 32 to move backward. When the second limiting block 35 on the third sliding plate 32 moves to the rear side of the stop on the rotating rod 36, the stop re-limits the second limiting block 35. When the third sliding plate 32 moves backward, the corresponding return spring 34 is compressed, which in turn drives the first limiting block 33 and the second sliding plate 31 connected to it to move backward. The second sliding plate 31 drives the rack 24 connected to it to move backward. The rack 24 drives the second gear 25 to rotate. The second gear 25 drives the rack 24 on the other side to move forward, thus pushing out the new filter screen 19 to perform the filtration work.

[0026] Cleaning mechanism: includes lead screw 40, slide bar 41, and cleaning plate 42. The drive motor drives the lead screw 40 to rotate, causing the cleaning plate 42 to slide along the lead screw 40 and slide bar 41 to clean the filter screen 19. Dust falls into the collection box 18 through channel one. The cleaning plate 42 can be provided with arc-shaped protrusions to enhance the cleaning effect. When not in operation, it is located at the top or bottom to reduce air intake resistance.

[0027] The foregoing has shown and described the main features and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0028] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An energy-saving air conditioning ventilation device, comprising a filter mechanism (10) and a split heat recovery mechanism (11), wherein a first pipe is fixedly connected to the side of the filter mechanism (10) away from the split heat recovery mechanism (11), and a second pipe is fixedly connected to the side of the split heat recovery mechanism (11) away from the filter mechanism (10), characterized in that: A circulation pipe (15) is installed on one side of the pipe two fixed to the split heat recovery mechanism (11), and a diversion pipe (16) is installed on the side of the pipe two away from the circulation pipe (15). The diversion pipe (16) is connected to the pipe two. One end of the circulation pipe (15) is connected to the split heat recovery mechanism (11), and the other end of the circulation pipe (15) is connected to the end of the pipe two away from the split heat recovery mechanism (11). A heat exchange mechanism (14) is provided inside the pipe two near the connection between the pipe two and the diversion pipe (16). The diversion pipe (16) is not in contact with the heat exchange mechanism (14). Solenoid valves (12) are provided inside pipe one, inside the branch pipe (16) near its connection with pipe two, and inside pipe two away from the split heat recovery mechanism (11). Temperature sensors (13) with the same structure are provided inside pipe one, inside pipe two near the split heat recovery mechanism (11), inside pipe two near its connection with the circulation pipe (15), and at the end of the circulation pipe (15) near pipe two. The solenoid valves (12) and the temperature sensors (13) are electrically connected to the same processor, and the processor is electrically connected to the split heat recovery mechanism (11).

2. The energy-saving air conditioning ventilation device according to claim 1, characterized in that: The filtration mechanism (10) includes a box body fixedly connected to one end of the pipeline near the split heat recovery mechanism (11). Both ends of the side wall of the box body away from the pipeline are fixedly connected to the split heat recovery mechanism (11). The end of the branch pipe (17) away from the box body is fixedly connected to the split heat recovery mechanism (11). A collection box (18) is installed at the bottom of the branch pipe (17). The box body is a hollow structure. The box body, the pipeline, and the two branch pipes (17) are all interconnected. A filter screen (19) is installed inside the branch pipe (17). The filter screen (19) can slide along the length of the branch pipe (17) inside the branch pipe (17). A vertically arranged diversion plate (20) is rotatably connected to the middle of the side of the box body away from the pipeline. The bottom end of the diversion plate (20) away from the pipeline rotates to the middle of the side of the bottom inner wall of the box body away from the pipeline.

3. The energy-saving air conditioning ventilation device according to claim 2, characterized in that: The top of the diversion plate (20) is coaxially fixedly connected to a gear (21). The end of the gear (21) away from the diversion plate (20) rotates on the top inner wall of the box. Both sides of the gear (21) along the length of the box are provided with limit wheels (23) of the same structure. The grooves of the two limit wheels (23) are fitted with the same belt (22). The side wall of the belt (22) near the gear (21) is the tooth side. Several teeth are evenly distributed on the tooth side. The gear (21) and the tooth side of the belt (22) mesh with each other. The end of the belt (22) passes around the limit wheel (23) and extends towards the split heat recovery mechanism (11) to the inside of the side wall of the branch pipe (17). The end of the belt (22) is fixed with a power storage mechanism. The power storage mechanism is located inside the top wall of the branch pipe (17). The power storage mechanism is connected to the filter screen (19).

4. The energy-saving air conditioning ventilation device according to claim 3, characterized in that: The energy storage mechanism arranged inside the branch pipe (17) includes a rack bar (24) fixedly connected to the top end of the side wall of the filter screen (19). A first storage groove is formed on the inner wall of the top of the branch pipe (17). The rack bar (24) slides on the inner side wall of the first storage groove. A second gear (25) is meshed and connected to the side of the rack bar (24) away from the filter screen (19). The second gear (25) is rotatably arranged in the first storage groove. A rack bar (24) with the same structure is meshed and connected to the side of the second gear (25) away from the filter screen (19). A second sliding plate (31) is fixedly connected to the side wall of the rack bar (24) on the side away from the filter screen (19).

5. An energy-saving air conditioning ventilation device according to claim 4, characterized in that: The second sliding plate (31) horizontally slides on the inner side wall of the first storage groove away from the second gear (25). A first sliding plate (30) slides on the side wall of the second sliding plate (31) near the opening of the first storage groove. The first sliding plate (30) is fixed to the inner side wall of the first storage groove. A third sliding plate (32) slides on the top of the second sliding plate (31) away from the first sliding plate (30). A first limiting block (33) is fixedly connected to the middle of one end of the second sliding plate (31) near the belt (22) away from the first sliding plate (30). A second limiting block (35) is fixedly connected to the middle of the upper surface of the third sliding plate (32) near the belt (22). The ends of the first limiting block (33) and the second limiting block (35) away from the first sliding plate (30) are both inclined surfaces, and the inclined surfaces of the first limiting block (33) and the second limiting block (35) are arranged oppositely towards the side close to each other.

6. An energy-saving air conditioning ventilation device according to claim 5, characterized in that: A connecting piece is fixed to the side wall of the third sliding plate (32) near the belt (22). The connecting piece is in a "冂" shape. The first limiting block (33) is located in the notch of the connecting piece and they do not contact each other. The connecting piece is fixedly connected to the belt (22). The first limiting block (33) is located between the belt (22) and the third sliding plate (32). A horizontally arranged return spring (34) is fixed to the bottom end of the side wall of the first limiting block (33) near the third sliding plate (32). The end of the return spring (34) away from the first limiting block (33) is fixedly connected to the third sliding plate (32).

7. An energy-saving air conditioning ventilation device according to claim 6, characterized in that: The same fixing frame is fixedly connected to the two side walls of the first sliding plate (30) along its width direction. The fixing frame is arranged avoiding the second sliding plate (31) and the third sliding plate (32). The middle of the fixing frame is located on the side of the third sliding plate (32) away from the second sliding plate (31), and the opening of the fixing frame faces the second sliding plate (31). A horizontally arranged rotating rod (36) is rotated in the middle of the fixing frame. The length direction of the rotating rod (36) extends towards the first limiting block (33). The end of the rotating rod (36) near the first limiting block (33) is an inclined surface. A stop block is arranged on the side wall of the rotating rod (36) near the third sliding plate (32). The side wall of the stop block away from the second limiting block (35) is an inclined surface, and the inclination angle of the inclined surface of the stop block is complementary to the inclination angle of the inclined surface at the end of the second limiting block (35).

8. An energy-saving air conditioning ventilation device according to claim 2, characterized in that: The filter screen (19) is fixed with sliders at both the top and bottom. The sliders slide on the inner wall of the branch pipe (17). The sliders allow the filter screen (19) to slide along the length of the branch pipe (17) inside the branch pipe (17). A cleaning mechanism is provided on the side of the filter screen (19) near the box. The cleaning mechanism includes a vertically arranged screw rod (40) rotatably connected to the inner wall of the bottom of the branch pipe (17) and a vertically arranged slide rod (41) fixedly connected to the inner wall of the bottom of the branch pipe (17). The screw rod (40) and the slide rod (41) are respectively arranged on both sides of the filter screen (19). The same cleaning plate (42) slides on the outer arc wall of the screw rod (40) and the slide rod (41). A channel is opened through the inner wall of the branch pipe (17) at the position corresponding to the cleaning plate (42). The channel is connected to the collection box (18).

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