Heat preservation and ventilation device for low-carbon building

Abstract

The invention relates to the technical field of low-carbon building ventilation equipment, and discloses a heat preservation and ventilation device for a low-carbon building. The device comprises a box body arranged on the outer vertical face of a building, and a waste heat recovery system is installed in the box body; the indoor air inlet assembly and the outdoor air inlet assembly are connected with corresponding inlets of the waste heat recovery system respectively, the outdoor air pipeline is connected with an outdoor outlet of the outdoor air pipeline and communicated with the indoor exhaust pipe, the flow channel switching assembly comprises a three-way pipe, a second exhaust pipe, an indoor exhaust pipe and a valve switching mechanism, and the two sets of valve elements are arranged in the two exhaust pipes in a sliding mode respectively. The valve driving mechanism drives the valve element to slide, the first temperature sensor is arranged in the waste heat recovery system cold air bin, and the first temperature sensor and the waste heat recovery system cold air bin are electrically connected with the PLC board. The PLC board reads temperature data, the position of the valve element is adjusted to switch the flow channel, outdoor fresh air is fed into a room after being preheated through waste heat recovery, the problem that the indoor temperature is rapidly reduced during ventilation in winter is effectively solved, and cooperation of ventilation and heat preservation and energy conservation is achieved.

Description

Technical Field

[0001] This application relates to the field of indoor ventilation equipment technology, and more particularly to thermal insulation and ventilation devices for low-carbon buildings. Background Technology

[0002] In the field of low-carbon buildings, thermal insulation and ventilation systems are core equipment for balancing indoor air quality and energy consumption control. They must achieve efficient air circulation between indoors and outdoors while avoiding excessive energy loss due to ventilation. However, existing ventilation equipment generally suffers from the technical challenge of rapid temperature drop when used in low-temperature winter environments, severely impacting living comfort and energy efficiency.

[0003] In winter, the temperature difference between indoors and outdoors can reach 20-30℃. Conventional ventilation systems mostly use direct displacement ventilation, where cold outdoor air enters the room without effective preheating and mixes rapidly with warm indoor air, causing a sharp drop in indoor temperature in a short period of time. To maintain a comfortable temperature, the indoor heating system needs to operate at a high load continuously, which not only significantly increases building energy consumption but may also cause discomfort due to temperature fluctuations.

[0004] In existing technologies, while some ventilation equipment integrates simple waste heat recovery structures, they often employ a single heat exchange channel design, resulting in low heat exchange efficiency and an inability to fully recover the heat carried by indoor exhaust air. Furthermore, their airflow switching largely relies on manual operation or simple mechanical control, making it difficult to adjust the ratio of fresh air to return air in real time according to changes in indoor and outdoor temperatures, leading to untimely preheating or insufficient heat recovery. In addition, some equipment lacks targeted insulation and airflow buffering designs, making it easy for cold air to blow directly into the room, further exacerbating uneven indoor temperatures and discomfort.

[0005] Furthermore, the filtration and preheating functions of existing ventilation equipment are mostly independent. Dust and impurities carried by cold outdoor air can easily clog heat exchange channels, reducing heat exchange efficiency. Additionally, condensate tends to accumulate in pipes at low temperatures, affecting equipment operational stability and lifespan. These problems make it difficult for conventional ventilation devices to achieve an effective balance between ventilation, insulation, and energy conservation in winter, limiting their widespread application in low-carbon buildings. Therefore, developing a thermal insulation and ventilation device that can efficiently recover waste heat, precisely regulate airflow, and prevent rapid drops in indoor temperature has become a pressing technical need in this field. Summary of the Invention

[0006] This application provides a low-carbon building insulation and ventilation device that solves the problem in the prior art where outdoor cold air enters the room directly without effective preheating during winter ventilation, causing a rapid drop in indoor temperature and making it impossible to adjust airflow switching in real time according to temperature. It achieves efficient recovery of indoor exhaust waste heat to preheat outdoor fresh air, and precise adjustment of flow channel switching through temperature sensing and PLC control to avoid large fluctuations in indoor temperature, thus balancing ventilation and heat preservation and energy saving.

[0007] This invention provides a low-carbon building insulation and ventilation device, comprising: a housing, installed on the exterior facade of a building; a waste heat recovery system installed inside the housing; an indoor air intake assembly, with its intake end disposed on an interior wall and its other end connected to the indoor gas inlet of the waste heat recovery system; an outdoor air intake assembly, with its intake end disposed on the exterior wall of the housing and its other end connected to the outdoor gas inlet of the waste heat recovery system; an outdoor gas pipe, with one end connected to the outdoor gas outlet of the waste heat recovery system; and a flow channel switching assembly, including a tee pipe, a second exhaust pipe, an indoor exhaust pipe, and a valve switching mechanism. The first end of the tee pipe is connected to the indoor gas exhaust port of the waste heat recovery system; one end of the second exhaust pipe is connected to the second end of the tee pipe and its other end is connected to the exterior wall of the housing; one end of the indoor exhaust pipe is connected to the third end of the tee pipe and its other end is disposed on the interior wall. The valve switching mechanism is located inside the housing and has two sets of valve cores, which are slidably disposed in the second exhaust pipe and the indoor exhaust pipe, respectively, to block the connection between the second exhaust pipe and the indoor exhaust pipe and the tee pipe; a valve drive mechanism, with its output end connected to the two sets of valve cores, is used to drive the two sets of valve cores to slide in the second exhaust pipe and the indoor exhaust pipe, respectively; a first temperature sensor, with its identification end located in the cold air chamber of the waste heat recovery system; and a PLC board, with both the first temperature sensor and the valve drive mechanism electrically connected to the PLC board; wherein the end of the outdoor gas pipe away from the waste heat recovery system is connected to the indoor exhaust pipe, and the PLC board is used to read the data from the first temperature sensor and adjust the positions of the two sets of valve cores in the second exhaust pipe and the indoor exhaust pipe, respectively, through the valve drive mechanism.

[0008] In one possible implementation, the valve switching mechanism includes: a first plug, slidably disposed within the second exhaust pipe, for sealing the connection between the second exhaust pipe and the tee pipe; and a second plug, slidably disposed within the indoor exhaust pipe, for sealing the connection between the indoor exhaust pipe and the tee pipe.

[0009] In one possible implementation, the valve drive mechanism includes: a first extension rod, one end of which is fixedly connected to the first plug; a second extension rod, one end of which is fixedly connected to the second plug, the first extension rod and the second extension rod being arranged parallel to each other; a first guide groove formed on the outer wall of the first extension rod; and a second guide groove formed on the outer wall of the second extension rod, the cross-sections of the first guide groove and the second guide groove being both right-angled triangles.

[0010] In one possible implementation, the valve actuation mechanism further includes: a drive rod disposed between the first extension rod and the second extension rod; two sets of triangular plates, each set fixedly disposed at both ends of the drive rod and slidably disposed within the first guide groove and the second guide groove; a clamping plate fixedly disposed within the housing, the drive rod slidably passing through the clamping plate; and an electric push rod disposed on one side of the drive rod, its fixed end installed within the housing and its output end fixedly connected to the side wall of the drive rod. The electric push rod is electrically connected to the PLC board, the PLC board being used to identify the temperature within the waste heat recovery system and adjust the horizontal position of the drive rod. The drive rod drives the first plug and the second plug to slide within the second exhaust pipe and the indoor exhaust pipe via the triangular plates.

[0011] In one possible implementation, the waste heat recovery system includes: a shell, internally comprising an air intake zone, a buffer zone, and a transition zone, the air intake zone, buffer zone, and transition zone being arranged sequentially along the gas flow direction; double partitions, fixedly disposed at intervals within the shell, for separating the air intake zone, buffer zone, and transition zone; multiple honeycomb tubes, the multiple honeycomb tubes being fixedly disposed at intervals within the transition zone, the two ends of each honeycomb tube being connected to the air intake zone and the buffer zone respectively; an indoor fan, the air intake end of which is fixedly connected to one end of the three-way pipe, the air intake end of the indoor fan being connected to the buffer zone; wherein the end of the indoor air intake component furthest from the indoor space is connected to the air intake zone, the end of the outdoor air intake component closest to the waste heat recovery system is connected to the transition zone, and the identification end of the first temperature sensor is disposed within the transition zone.

[0012] In one possible implementation, the indoor air intake assembly includes: a first L-tube, one end of which passes through the housing and is fixedly connected to the indoor gas inlet of the waste heat recovery system, and the other end of which is disposed in a hole drilled in the indoor wall, with the end of the first L-tube near the indoor wall inclined upwards; an air intake cover plate, with multiple air intake holes opened on its circumferential outer wall, and the air intake cover plate being threadedly connected to the inner wall of the end of the first L-tube near the indoor wall; an air intake filter element disposed on the inner wall of the end of the first L-tube near the indoor wall; and sound-absorbing cotton wrapped around the circumferential outer wall of the first L-tube and located between the first L-tube and the hole drilled in the wall; wherein the inner wall of the first L-tube is provided with a boss, the boss being used to restrict the air intake filter element from sliding axially along the first L-tube.

[0013] In one possible implementation, the outdoor air intake assembly includes an electrothermal filtration mechanism, which comprises: an air intake hopper fixedly disposed on the bottom surface of the housing, the large end of the air intake hopper communicating with the outer wall of the housing; an extension tube, one end of which is fixedly connected to the small end of the air intake hopper and arranged vertically; an electric heating chamber, cylindrical in shape and closed at both ends, the electric heating chamber and the extension tube being coaxially arranged, the end of the extension tube away from the air intake hopper penetrating the bottom surface of the electric heating chamber and extending into the interior of the electric heating chamber; an electric heating wire disposed in the interlayer of the electric heating chamber, the electric heating chamber having a double-layer structure, the electric heating wire being electrically connected to the PLC board, the PLC board being used to adjust the power of the electric heating wire by identifying the temperature within the waste heat recovery system; a spiral scraper, coaxially fixedly disposed on the inner wall of the electric heating chamber; and an air filter disposed within the electric heating chamber, its circumferential outer wall abutting against the spiral scraper, the spiral scraper extending vertically downward on the side near the air filter.

[0014] In one possible implementation, the outdoor air intake assembly further includes a filter element drive mechanism, which comprises: a drive motor, fixedly installed inside the housing; a swing rod, one end of which is fixedly connected to the output end of the drive motor; a guide rail, horizontally arranged, with the end of the swing rod away from the drive motor slidably disposed within the guide rail; a vertical block, fixedly disposed at the lower part of the guide rail and fixedly connected to the bottom surface of the guide rail; a slide rail, fixedly disposed on the inner wall of the housing, with the vertical block slidably disposed vertically within the slide rail; a groove, horizontally formed on the surface of the vertical block; a rack, slidably disposed within the groove; a gear, disposed on the surface of the vertical block and meshing with the rack; and vertical rods, spaced vertically at intervals on the surface of the vertical block. The gear is fixedly sleeved on the circumferential outer wall of the vertical rod; there are two sets of mounting ears, which are fixedly disposed vertically at intervals on the surface of the vertical block, and the upper part of the vertical rod is rotatably installed in the two sets of mounting ears, and the bottom end of the vertical rod is fixedly connected to the top surface of the air filter; a first air guide pipe is connected to the inner wall of the air filter at one end; an air storage box is fixedly disposed in the box body, and the other end of the first air guide pipe is fixedly connected to the air storage box; a second air guide pipe is fixedly connected to the air storage box at one end; an outdoor fan is fixedly connected to the other end of the second air guide pipe at its inlet end; and a third air guide pipe is fixedly connected to the outlet of the outdoor fan at one end and connected to the outdoor gas inlet of the waste heat recovery system at the other end.

[0015] In one possible implementation, the outdoor air intake assembly further includes a steam sterilization mechanism, which comprises: an electric steam generator fixedly disposed within the housing; a water supply pipe, one end of which is fixedly connected to the water inlet of the electric steam generator, and the other end passing through the outer wall of the housing and disposed at the end of the indoor air intake assembly near the interior; a steam pipe, one end of which is fixedly connected to the steam outlet of the electric steam generator; an elastic airbag disposed within the housing and fixedly connected to the other end of the steam pipe; a guide rod, one end of which is fixedly disposed on one side of the drive motor, and the other end of which is disposed near the vertical rod, the elastic airbag being sleeved on the outer wall of the guide rod; a pressure plate slidably sleeved on the circumferential outer wall of the guide rod, one side of the pressure plate being fixedly connected to the end of the elastic airbag, and one end of the rack being fixedly connected to the side of the pressure plate away from the elastic airbag; and a jet pipe, one end of which is fixedly connected to the elastic airbag, and the other end passing through the top surface of the electric heating chamber and extending into the air filter.

[0016] In one possible implementation, the end of the water supply pipe near the room is arranged corresponding to the end of the first L-pipe of the indoor air intake assembly near the room. The end of the jet pipe extending into the air filter has multiple steam nozzles, which are evenly distributed around the circumference of the jet pipe. The elastic airbag contracts and expands as the pressure plate slides, and is used to spray steam through the jet pipe onto the inner wall of the air filter.

[0017] One or more technical solutions provided in the embodiments of the present invention have at least the following technical effects or advantages: Indoor air enters the indoor gas inlet of the waste heat recovery system through the indoor air intake component, while outdoor air enters the outdoor gas inlet of the waste heat recovery system through the outdoor air intake component. Heat exchange occurs between the two within the waste heat recovery system. A first temperature sensor collects real-time temperature data from the cold air chamber of the waste heat recovery system and transmits it to the PLC board. The PLC board controls the valve drive mechanism based on the temperature data, driving two sets of valve cores to slide within the second exhaust pipe and the indoor exhaust pipe, respectively, thus switching the flow path. When indoor exhaust gas needs to be discharged, the valve core opens the second exhaust pipe and blocks the indoor exhaust pipe, allowing the exhaust gas to exit the housing through the tee pipe and the second exhaust pipe. When preheated fresh air needs to be introduced into the room, the valve core blocks the second exhaust pipe and opens the indoor exhaust pipe, allowing the outdoor fresh air, preheated by waste heat recovery, to flow into the indoor exhaust pipe through the outdoor gas pipeline and be introduced into the room along with the treated indoor air.

[0018] The waste heat recovery system achieves heat exchange between indoor and outdoor air. By linking the PLC board with temperature sensors and valve drive mechanisms, the flow channel switching is precisely adjusted to prevent cold outdoor air from directly entering the room and causing a rapid drop in temperature. The overall structure has a high degree of integration and can achieve a dynamic balance between ventilation and heat preservation without manual intervention, effectively improving the energy-saving effect and living comfort of low-carbon buildings. At the same time, the layout of each component is reasonable and the operation is stable and reliable. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments of the present invention or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the box structure provided in an embodiment of this application; Figure 2 This is a schematic diagram of the ventilation device structure provided in the embodiments of this application; Figure 3 This is a schematic diagram of the waste heat recovery system provided in an embodiment of this application; Figure 4 for Figure 3 Enlarged view of region A in the middle; Figure 5 for Figure 3 Enlarged view of region B in the middle; Figure 6 This is a schematic diagram of the indoor air intake component structure provided in an embodiment of this application; Figure 7 This is a schematic diagram of the filter element drive mechanism provided in an embodiment of this application; Figure 8 This is a schematic diagram of the gas storage tank structure provided in an embodiment of this application; Figure 9 This is a schematic diagram of the installation of the elastic airbag provided in an embodiment of this application; Figure 10 This is a schematic diagram of the valve drive mechanism provided in an embodiment of this application.

[0021] icon: 100 - Box; 200- Waste heat recovery system; 210 - Outer shell; 211 - Air intake area; 212 - Buffer area; 213 - Transition area; 220 - Double partition; 230 - Honeycomb tube; 240 - Indoor fan; 300 - Indoor air intake assembly; 310 - First L-pipe; 311 - Boss; 320 - Intake cover; 330 - Intake filter; 340 - Sound-absorbing cotton; 400 - Outdoor air intake assembly; 410 - Electric heating filter mechanism; 411 - Air inlet hopper; 412 - Extension tube; 413 - Electric heating chamber; 414 - Heating wire; 415 - Spiral scraper; 416 - Air filter; 420 - Filter cartridge drive mechanism; 421-Drive motor; 422-Swing rod; 423-Guide rail; 424-Vertical block; 425-Slide rail; 426-Slide groove; 427-Rack; 428-Gear; 429-Vertical rod; 430 - Install ear; 431-First air duct; 432-Air storage tank; 433-Second air duct; 434-Outdoor fan; 435-Third air duct; 436-Steam sterilization mechanism; 437-Electric steam generator; 438-Water supply pipe; 439-Steam pipe; 440 - Elastic airbag; 441-Guide rod; 442-Pressure plate; 443-Jet pipe; 500 - Outdoor gas pipeline; 600-Flow channel switching component; 610 - Tee pipe; 620 - Second exhaust pipe; 630 - Indoor exhaust pipe; 640 - Valve switching mechanism; 641 - First plug; 642 - Second plug; 700 - Valve drive mechanism; 710-First extension rod; 711-First guide groove; 720-Second extension rod; 721-Second guide groove; 730-Drive rod; 740-Triangular piece; 750-Clamping plate; 760-Electric push rod; 800-First temperature sensor; 900-PLC board. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the embodiments of the present invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of the present invention according to the specific circumstances.

[0024] Example 1 Please see Figures 1-10A low-carbon building insulation and ventilation device includes: a housing 100 installed on the exterior facade of a building; a waste heat recovery system 200 installed inside the housing 100; an indoor air intake assembly 300 with its intake end disposed on the interior wall and its other end connected to the indoor gas inlet of the waste heat recovery system 200; an outdoor air intake assembly 400 with its intake end disposed on the exterior wall of the housing 100 and its other end connected to the outdoor gas inlet of the waste heat recovery system 200; and an outdoor gas pipeline 500, one end of which is connected to the indoor gas inlet of the waste heat recovery system 200. External gas outlet; flow channel switching assembly 600, including a three-way pipe 610, a second exhaust pipe 620, an indoor exhaust pipe 630, and a valve switching mechanism 640. The first end of the three-way pipe 610 is connected to the indoor gas exhaust port of the waste heat recovery system 200. One end of the second exhaust pipe 620 is connected to the second end of the three-way pipe 610, and the other end is connected to the outer wall of the housing 100. One end of the indoor exhaust pipe 630 is connected to the third end of the three-way pipe 610, and the other end is located on the indoor wall. The valve switching mechanism 640... A valve drive mechanism 700 is disposed within the housing 100 and has two sets of valve cores. The two sets of valve cores are slidably disposed within the second exhaust pipe 620 and the indoor exhaust pipe 630, respectively, to block the connection points between the second exhaust pipe 620 and the indoor exhaust pipe 630 and the tee pipe 610. A valve drive mechanism 700 has its output end connected to the two sets of valve cores, driving the two sets of valve cores to slide within the second exhaust pipe 620 and the indoor exhaust pipe 630, respectively. A first temperature sensor 800 has its identification end disposed within the waste heat recovery system. The system includes a cold air chamber 200; a PLC board 900, the first temperature sensor 800, and the valve drive mechanism 700, all of which are electrically connected to the PLC board 900; wherein the outdoor gas pipe 500, at one end away from the waste heat recovery system 200, is connected to the indoor exhaust pipe 630; the PLC board 900 is used to read the data from the first temperature sensor 800 and adjust the positions of the two sets of valve cores in the second exhaust pipe 620 and the indoor exhaust pipe 630 respectively through the valve drive mechanism 700.

[0025] In the above embodiment, indoor air enters the indoor gas inlet of the waste heat recovery system 200 through the indoor air intake component 300, and outdoor air enters the outdoor gas inlet of the waste heat recovery system 200 through the outdoor air intake component 400. Heat exchange is completed between the two within the waste heat recovery system 200. The first temperature sensor 800 collects the temperature data of the cold air chamber of the waste heat recovery system 200 in real time and transmits it to the PLC board 900. The PLC board 900 controls the valve drive mechanism 700 to operate based on the temperature data, driving the two sets of valve cores respectively in the second row... The air pipe 620 and the indoor exhaust pipe 630 slide within each other to achieve flow channel switching. When it is necessary to discharge indoor exhaust gas, the valve core opens the second exhaust pipe 620 and blocks the indoor exhaust pipe 630. The exhaust gas is discharged from the box 100 through the three-way pipe 610 and the second exhaust pipe 620. When it is necessary to send preheated fresh air into the room, the valve core blocks the second exhaust pipe 620 and opens the indoor exhaust pipe 630. The outdoor fresh air, which has been preheated by waste heat recovery, flows into the indoor exhaust pipe 630 through the outdoor gas pipe 500 and is sent into the room together with the treated indoor air.

[0026] The waste heat recovery system 200 achieves heat exchange between indoor and outdoor air. By linking the PLC board 900 with the temperature sensor and valve drive mechanism 700, the flow channel switching is precisely adjusted to prevent cold outdoor air from directly entering the room and causing a rapid drop in temperature. The overall structure has a high degree of integration and can achieve a dynamic balance between ventilation and heat preservation without manual intervention, effectively improving the energy-saving effect and living comfort of low-carbon buildings. At the same time, the layout of each component is reasonable and the operation is stable and reliable.

[0027] Example 2 Please see Figures 1-10 The valve switching mechanism 640 includes: a first plug 641, which is slidably disposed in the second exhaust pipe 620 and is used to block the connection between the second exhaust pipe 620 and the three-way pipe 610; and a second plug 642, which is slidably disposed in the indoor exhaust pipe 630 and is used to block the connection between the indoor exhaust pipe 630 and the three-way pipe 610.

[0028] In the above embodiments, the first plug 641 and the second plug 642 serve as two sets of valve cores, corresponding to the inner diameters of the second exhaust pipe 620 and the indoor exhaust pipe 630. When the valve drive mechanism 700 outputs power, the first plug 641 slides along the axial direction of the second exhaust pipe 620. When it slides to the connection point between the three-way pipe 610 and the second exhaust pipe 620, it seals the flow channel. Similarly, the second plug 642 slides along the axial direction of the indoor exhaust pipe 630. When it slides to the connection point between the three-way pipe 610 and the indoor exhaust pipe 630, it seals the flow channel. By sliding the two plugs in opposite directions, the second exhaust pipe 620 and the indoor exhaust pipe 630 are alternately opened and closed, thereby completing the flow channel switching.

[0029] The valve core adopts a plug-type structure, which fits tightly against the inner wall of the exhaust pipe, providing strong sealing performance and effectively preventing heat loss or reduced ventilation efficiency caused by air leakage in the flow channel. The sliding design of the plug, combined with the axial guidance of the exhaust pipe, results in low movement resistance, smooth switching, simple structure, and low failure rate. It can achieve precise opening and closing of the flow channel for a long time, providing reliable protection for the overall device's heat preservation and ventilation coordination.

[0030] Example 3 Please see Figures 1-10 The valve drive mechanism 700 includes: a first extension rod 710, one end of which is fixedly connected to the first plug 641; a second extension rod 720, one end of which is fixedly connected to the second plug 642, the first extension rod 710 and the second extension rod 720 being arranged parallel to each other; a first guide groove 711, which is formed on the outer wall of the first extension rod 710; and a second guide groove 721, which is formed on the outer wall of the second extension rod 720, the cross-sections of the first guide groove 711 and the second guide groove 721 being both right-angled triangles.

[0031] In the above embodiment, the first extension rod 710 and the second extension rod 720 are arranged in parallel. The first guide groove 711 and the second guide groove 721 opened on their outer walls are both right-angled triangular sections, forming inclined force-bearing surfaces. When the external driving force acts on the guide groove, the hypotenuse of the right-angled triangle serves as the force-bearing contact surface, converting the lateral driving force into the axial driving force of the extension rod, causing the first plug 641 and the second plug 642 to slide synchronously in opposite directions. The right-angled structure of the guide groove can limit the sliding direction, prevent the extension rod from deviating, and ensure the accuracy of the valve core movement.

[0032] The guide groove design with a right-angled triangular cross-section achieves efficient conversion of driving force, eliminating the need for a complex transmission structure to drive the valve core and simplifying the overall design of the valve drive mechanism 700. The guide groove fits tightly with the subsequent drive components, providing excellent motion guidance and effectively reducing jamming during valve core sliding. This improves the response speed and stability of flow channel switching. Furthermore, the integrated structure of the extension rod and guide groove offers high strength and a long service life.

[0033] Example 4 Please see Figures 1-10The valve drive mechanism 700 further includes: a drive rod 730 disposed between the first extension rod 710 and the second extension rod 720; two sets of triangular plates 740, each set fixedly disposed at both ends of the drive rod 730 and slidably disposed within the first guide groove 711 and the second guide groove 721; a clamping plate 750 fixedly disposed within the housing 100, the drive rod 730 slidably passing through the clamping plate 750; and an electric push rod 760 disposed between the drive rod 730 and the second extension rod 720. On one side of the drive rod 730, its fixed end is installed inside the housing 100, and its output end is fixedly connected to the side wall of the drive rod 730. The electric push rod 760 is electrically connected to the PLC board 900. The PLC board 900 is used to identify the temperature inside the waste heat recovery system 200 and adjust the horizontal position of the drive rod 730. The drive rod 730 drives the first plug 641 and the second plug 642 to slide inside the second exhaust pipe 620 and the indoor exhaust pipe 630 through the triangular piece 740.

[0034] In the above embodiment, the PLC board 900 controls the electric push rod 760 to move based on the temperature data from the first temperature sensor 800. The output end of the electric push rod 760 pushes the drive rod 730 to slide horizontally along the guide direction of the clamping plate 750. The triangular pieces 740 at both ends of the drive rod 730 are respectively embedded in the first guide groove 711 and the second guide groove 721. As the drive rod 730 moves horizontally, the inclined surface of the triangular piece 740 interacts with the inclined side of the guide groove, generating an axial thrust, which drives the first extension rod 710 and the second extension rod 720 to slide in opposite directions, thereby driving the first plug 641 and the second plug 642 to slide in the corresponding exhaust pipe, realizing the switching of flow channel on and off. The clamping plate 750 plays a limiting and guiding role for the drive rod 730, ensuring the stability of its movement trajectory.

[0035] Technical benefits: Through the coordinated transmission of the electric push rod 760, drive rod 730, triangular plate 740 and guide groove, the valve core is automatically and precisely driven, with high transmission efficiency and rapid action response. The closed-loop control of PLC board 900 can adjust the valve core position in real time according to temperature changes, with high flow channel switching accuracy, effectively ensuring waste heat recovery efficiency and indoor temperature stability. The overall drive structure is compact, occupying little space in the housing, and has good compatibility with other components, further improving the integration and intelligence level of the device.

[0036] Example 5 Please see Figures 1-10The waste heat recovery system 200 includes: a shell 210, internally comprising an air inlet zone 211, a buffer zone 212, and a transition zone 213, the air inlet zone 211, buffer zone 212, and transition zone 213 being arranged sequentially along the gas flow direction; double partitions 220, fixedly disposed at intervals within the shell 210, for separating the air inlet zone 211, buffer zone 212, and transition zone 213; and multiple honeycomb tubes 230, the multiple honeycomb tubes 230 being fixedly disposed at intervals within the transition zone 213, each honeycomb tube 230... The two ends of 0 are respectively connected to the air intake area 211 and the buffer area 212; the indoor fan 240 has its air intake end fixedly connected to one end of the three-way pipe 610, and the air intake end of the indoor fan 240 is connected to the buffer area 212; wherein the end of the indoor air intake component 300 away from the room is connected to the air intake area 211, and the end of the outdoor air intake component 400 near the waste heat recovery system 200 is connected to the transition area 213, and the identification end of the first temperature sensor 800 is located in the transition area 213.

[0037] In the above embodiment, the outer shell 210 of the waste heat recovery system 200 is divided by double partitions 220 to form an air intake zone 211, a buffer zone 212, and a transition zone 213. Indoor air enters the air intake zone 211 through the indoor air intake component 300, and outdoor air enters the transition zone 213 through the outdoor air intake component 400. Multiple honeycomb tubes 230 are arranged at intervals in the transition zone 213. Indoor air enters the tube through one end of the honeycomb tube 230, and outdoor air flows around the honeycomb tube 230 in the transition zone 213, achieving heat exchange through the walls of the honeycomb tube 230 to preheat the outdoor fresh air. The heat-exchanged indoor air enters the buffer zone 212 and is sent to the flow channel switching component 600 through the indoor fan 240 and the three-way pipe 610. The first temperature sensor 800 is located in the transition zone 213 to collect the air temperature data after heat exchange in real time, providing a basis for the control of the PLC board 900.

[0038] The honeycomb tube 230 structure increases the heat exchange contact area between indoor and outdoor air. Combined with the airflow guidance design of the transition zone 213, it improves the heat exchange efficiency and ensures that the outdoor fresh air can fully absorb the residual heat of the indoor exhaust air. The partitioned design of the air intake zone 211, buffer zone 212, and transition zone 213 makes the airflow orderly and avoids insufficient heat exchange caused by airflow turbulence. At the same time, the buffer zone 212 can stabilize the airflow pressure and ensure the smoothness of subsequent ventilation. The precise installation position of the first temperature sensor 800 ensures that the collected data truly reflects the heat exchange effect and provides reliable support for the precise control of the flow channel switching.

[0039] Example 6 Please see Figures 1-10The indoor air intake assembly 300 includes: a first L-tube 310, one end of which passes through the housing 100 and is fixedly connected to the indoor gas inlet of the waste heat recovery system 200, and the other end is arranged in a hole drilled in the indoor wall, with the end of the first L-tube 310 near the indoor wall inclined upwards; an air intake cover 320, with multiple air intake holes on its circumferential outer wall, and the air intake cover 320 is threadedly connected to the inner wall of the end of the first L-tube 310 near the indoor wall; an air intake filter element 330, disposed on the inner wall of the end of the first L-tube 310 near the indoor wall; and sound-absorbing cotton 340, wrapped around the circumferential outer wall of the first L-tube 310 and located between the first L-tube 310 and the hole drilled in the wall; wherein the inner wall of the first L-tube 310 is provided with a boss 311, the boss 311 being used to restrict the air intake filter element 330 from sliding axially along the first L-tube 310.

[0040] In the above embodiment, the first L-tube 310 is inclined upward at the end near the room to reduce indoor dust and debris falling into the tube. One end of the tube passes through the housing 100 and is connected to the indoor gas inlet of the waste heat recovery system 200. The other end extends into the room through a hole drilled in the wall. The air inlet cover 320 is fixed to the end of the first L-tube 310 by a threaded connection. Its circumferential air inlet hole is used to guide indoor air to enter smoothly. The air inlet filter element 330 is located at the end of the first L-tube 310 near the room. It is limited by the protrusion 311 on the inner wall to prevent sliding and displacement, and filters the indoor air entering. The sound-absorbing cotton 340 is wrapped around the circumferential outer wall of the first L-tube 310 and filled between the first L-tube 310 and the hole drilled in the wall to absorb the noise generated by the airflow.

[0041] The upward-sloping first L-tube 310 works in conjunction with the air inlet cover 320 with through holes to ensure smooth air intake and also to provide dust protection. The air intake filter 330 effectively filters dust and impurities in the indoor air, preventing blockage of the honeycomb tube 230 of the waste heat recovery system 200, ensuring heat exchange efficiency and the service life of the device. The sound-absorbing cotton 340 significantly reduces airflow noise during the air intake process, improving the quietness of the living environment. The filter element is limited by the boss 311 and connected by the threaded cover, making it easy to disassemble and install, and convenient for later maintenance and replacement. The overall structure combines practicality and convenience.

[0042] Example 7 Please see Figures 1-10The outdoor air intake assembly 400 includes an electrothermal filter mechanism 410, which includes: an air intake hopper 411 fixedly disposed on the inner bottom surface of the housing 100, the large end of the air intake hopper 411 communicating with the outer wall of the housing 100; an extension pipe 412, one end of which is fixedly connected to the small end of the air intake hopper 411 and is arranged vertically; and an electric heating chamber 413, which is cylindrical and closed at both ends, the electric heating chamber 413 and the extension pipe 412 being coaxially arranged, the end of the extension pipe 412 away from the air intake hopper 411 penetrating the bottom surface of the electric heating chamber 413 and extending to the electric heating chamber 412. Inside the heating chamber 413; a heating wire 414 is disposed between the layers of the heating chamber 413, which has a double-layer structure; the heating wire 414 is electrically connected to the PLC board 900, which is used to adjust the power of the heating wire 414 by identifying the temperature within the waste heat recovery system 200; a spiral scraper 415 is coaxially fixed to the inner wall of the heating chamber 413; an air filter 416 is disposed inside the heating chamber 413, with its circumferential outer wall abutting against the spiral scraper 415, and the spiral scraper 415 extending vertically downward on the side near the air filter 416.

[0043] In the above embodiment, outdoor air enters the extension pipe 412 through the air intake hopper 411. The extension pipe 412 is vertically arranged and penetrates the bottom surface of the electric heating chamber 413, guiding the air into the electric heating chamber 413. The electric heating chamber 413 has a double-layer structure. The electric heating wire 414 in the interlayer generates heat after being energized, heating the air in the electric heating chamber 413. The spiral scraper 415 is coaxially fixed to the inner wall of the electric heating chamber 413 and abuts against the outer wall of the air filter 416 located in the chamber. When the air passes through the air filter 416, the air filter 416 filters dust and impurities in the air. The spiral scraper 415 can scrape off the pollutants attached to the outer wall of the air filter 416. The PLC board 900 adjusts the power of the electric heating wire 414 according to the temperature data in the waste heat recovery system 200 to achieve precise control of the heating temperature.

[0044] The dual-layer structure design of the heating wire 414 and the heating chamber 413 ensures uniform heating with minimal heat loss, rapidly increasing the temperature of the outdoor fresh air. Combined with the subsequent waste heat recovery system 200 for further preheating, it effectively prevents cold air from entering the room. The contact design between the spiral scraper 415 and the air filter 416 allows for real-time removal of contaminants from the outer wall of the air filter 416 during operation, preventing increased ventilation resistance and decreased filtration efficiency due to clogging, and extending the service life of the air filter 416. The overall mechanism integrates outdoor air heating and filtration, improving fresh air quality and operational stability.

[0045] Example 8 Please see Figures 1-10The outdoor air intake assembly 400 further includes a filter element drive mechanism 420, which includes: a drive motor 421, fixedly installed inside the housing 100; a swing rod 422, one end of which is fixedly connected to the output end of the drive motor 421; a guide rail 423, horizontally arranged, with the end of the swing rod 422 away from the drive motor 421 slidably disposed within the guide rail 423; and a vertical block 424, fixedly disposed on the guide rail 423. The lower part is fixedly connected to the bottom surface of the guide rail 423; the slide rail 425 is fixedly disposed on the inner wall of the housing 100, and the vertical block 424 is vertically slidably disposed in the slide rail 425; the slide groove 426 is horizontally opened on the surface of the vertical block 424; the rack 427 is slidably disposed in the slide groove 426; the gear 428 is disposed on the surface of the vertical block 424 and meshes with the rack 427; the vertical rod 429 is vertically spaced on the vertical block 424. On the surface, the gear 428 is fixedly sleeved on the circumferential outer wall of the vertical rod 429; there are two sets of mounting ears 430, which are fixedly disposed vertically at intervals on the surface of the vertical block 424; the upper part of the vertical rod 429 is rotatably mounted in the two sets of mounting ears 430; the bottom end of the vertical rod 429 is fixedly connected to the top surface of the air filter 416; the first air guide pipe 431 is connected at one end to the inner wall of the air filter 416; the air storage box 43 2. Fixedly installed inside the housing 100, the other end of the first air guide pipe 431 is fixedly connected to the gas storage box 432; the second air guide pipe 433 is fixedly connected to the gas storage box 432 at one end; the outdoor fan 434 has its air inlet end fixedly connected to the other end of the second air guide pipe 433; the third air guide pipe 435 has its one end fixedly connected to the air outlet of the outdoor fan 434, and its other end connected to the outdoor gas inlet of the waste heat recovery system 200.

[0046] In the above embodiment, after the drive motor 421 starts, it drives the swing rod 422 to rotate. The end of the swing rod 422 away from the drive motor 421 slides in the guide rail 423, pushing the guide rail 423 to drive the vertical block 424 to slide vertically along the slide rail 425. The rack 427 on the surface of the vertical block 424 slides in the slide groove 426 and meshes with the gear 428 to drive the vertical rod 429 to rotate around the mounting ear 430. The bottom end of the vertical rod 429 is fixedly connected to the top surface of the air filter 416, thereby driving the air filter 416 to rotate in the electric heating chamber 413. During the rotation of the air filter 416, its inner wall is connected to the air storage box 432 through the first air guide pipe 431. The outdoor fan 434 draws filtered air from the air storage box 432 through the second air guide pipe 433 and sends it into the outdoor gas inlet of the waste heat recovery system 200 through the third air guide pipe 435.

[0047] The rotation of the air filter 416 is achieved through the linkage of components such as the drive motor 421, swing rod 422, guide rail 423, rack 427, and gear 428. When the air filter 416 rotates, it works in conjunction with the spiral scraper 415 to more thoroughly remove contaminants from the outer wall, resulting in a cleaner cleaning effect than a static air filter 416. The rotating air filter 416 also enhances airflow turbulence, improving filtration efficiency and air circulation speed. Combined with the suction effect of the outdoor fan 434, it ensures an adequate supply of fresh air. All transmission components are tightly integrated, resulting in efficient power transmission. The rotation speed of the air filter 416 can be adjusted according to ventilation requirements, adapting to different filtration and cleaning needs under various operating conditions.

[0048] Example 9 Please see Figures 1-10 The outdoor air intake assembly 400 further includes a steam sterilization mechanism 436, which comprises: an electric steam generator 437 fixedly disposed within the housing 100; a water supply pipe 438, one end of which is fixedly connected to the water inlet of the electric steam generator 437, and the other end passing through the outer wall of the housing 100 and disposed at the indoor air intake assembly 300 near the indoor side; a steam pipe 439, one end of which is fixedly connected to the steam outlet of the electric steam generator 437; an elastic airbag 440 disposed within the housing 100 and fixedly connected to the other end of the steam pipe 439; and a guide. A rod 441 is fixed at one end to one side of the drive motor 421, and the other end is set near the vertical rod 429. The elastic airbag 440 is sleeved on the outer wall of the guide rod 441. A pressure plate 442 is slidably sleeved on the circumferential outer wall of the guide rod 441. One side of the pressure plate 442 is fixedly connected to the end of the elastic airbag 440. One end of the rack 427 is fixedly connected to the side of the pressure plate 442 away from the elastic airbag 440. An air jet pipe 443 is fixedly connected at one end to the elastic airbag 440, and the other end passes through the top surface of the electric heating chamber 413 and extends into the air filter 416.

[0049] In the above embodiment, the electric steam generator 437 replenishes water through the water supply pipe 438. After being powered on, it heats the water to generate high-temperature steam. The steam is transported through the steam pipe 439 to the elastic airbag 440 for storage. The guide rod 441 supports and guides the elastic airbag 440. When the rack 427 drives the pressure plate 442 to slide along the guide rod 441, the pressure plate 442 squeezes the elastic airbag 440, causing the airbag to contract and spray the high-temperature steam inside through the jet pipe 443 into the air filter 416. The jet pipe 443 extends into the air filter 416, allowing the steam to act directly on the inner wall of the air filter 416, achieving disinfection and sterilization of the air filter 416 and softening of pollutants. The elasticity of the elastic airbag 440 can buffer the pressure, making the steam injection uniform and stable.

[0050] High-temperature steam can not only effectively kill bacteria, mold and other microorganisms attached to the air filter 416, improving the hygiene quality of fresh air, but also soften stubborn pollutants in the pores of the air filter 416. Combined with the rotation of the air filter 416 and the scraping of the spiral scraper 415, it can achieve deep cleaning of the air filter 416, further extending the service life of the air filter 416. The cooperative structure of the elastic airbag 440 and the pressure plate 442 can achieve pressurized steam injection without an additional power source. The structure is ingenious, energy-saving and efficient, and the steam injection direction is precise, with strong disinfection and cleaning targeting, ensuring the stable filtration and ventilation performance of the air filter 416.

[0051] Example 10 Please see Figures 1-10 The water supply pipe 438 is arranged at one end near the room and the first L pipe 310 of the indoor air intake assembly 300 is arranged at one end near the room. The jet pipe 443 extends into the air filter 416 and has multiple steam jet holes. The multiple steam jet holes are evenly distributed around the circumference of the jet pipe 443. The elastic airbag 440 contracts and expands as the pressure plate 442 slides, and is used to spray steam through the jet pipe 443 onto the inner wall of the air filter 416.

[0052] In the above embodiment, the end of the water supply pipe 438 closest to the room is arranged correspondingly to the end of the first L-pipe 310 closest to the room, which can conveniently replenish the water source required by the electric steam generator 437 without the need to lay an additional long-distance water supply pipe 438. The end of the jet pipe 443 extending into the air filter 416 has multiple circumferentially evenly distributed steam nozzles. When the elastic airbag 440 contracts, the high-temperature steam inside is evenly sprayed through the nozzles in all directions onto the inner wall of the air filter 416, covering the entire internal area of ​​the air filter 416. As the pressure plate 442 slides back and forth, the elastic airbag 440 alternately contracts and expands, achieving intermittent steam injection, ensuring both disinfection and cleaning effects while avoiding excessive steam consumption.

[0053] The evenly distributed steam nozzles around the circumference allow steam to fully cover the inner wall of the air filter 416, ensuring thorough disinfection and sterilization without any blind spots. This uniform and thorough cleaning effectively prevents localized contaminant residue. The contraction and expansion of the elastic airbag 440 enables intermittent steam injection, saving energy and ensuring full contact between the steam and the air filter 416, thus enhancing disinfection, sterilization, and contaminant softening effects. The corresponding arrangement of the water supply pipe 438 simplifies pipe connections, reduces installation difficulty, and facilitates future maintenance and water replenishment, further improving the practicality and convenience of the device.

[0054] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0055] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A low-carbon building insulation and ventilation device, characterized in that, include: The box (100) is installed on the exterior facade of the building; Waste heat recovery system (200) is installed inside the housing (100); An indoor air intake assembly (300) has its intake end arranged on an indoor wall and its other end connected to the indoor gas inlet of the waste heat recovery system (200); An outdoor air intake assembly (400) has its intake end located on the outer wall of the housing (100) and its other end connected to the outdoor gas inlet of the waste heat recovery system (200). An outdoor gas pipeline (500) is connected at one end to the outdoor gas outlet of the waste heat recovery system (200); The flow channel switching assembly (600) includes a three-way pipe (610), a second exhaust pipe (620), an indoor exhaust pipe (630), and a valve switching mechanism (640). The first end of the three-way pipe (610) is connected to the indoor gas exhaust port of the waste heat recovery system (200). One end of the second exhaust pipe (620) is connected to the second end of the three-way pipe (610), and the other end is connected to the outer wall of the housing (100). One end of the indoor exhaust pipe (630) is connected to the third end of the three-way pipe (610), and the other end is arranged on the indoor wall. The valve switching mechanism (640) is located inside the housing (100) and has two sets of valve cores. The two sets of valve cores are slidably arranged in the second exhaust pipe (620) and the indoor exhaust pipe (630) respectively, for sealing the connection between the second exhaust pipe (620) and the indoor exhaust pipe (630) and the three-way pipe (610). The valve drive mechanism (700) has its output end connected to two sets of valve cores for driving the two sets of valve cores to slide within the second exhaust pipe (620) and the indoor exhaust pipe (630), respectively. The first temperature sensor (800) has its identification end located in the cold air chamber of the waste heat recovery system (200); The PLC board (900) is electrically connected to both the first temperature sensor (800) and the valve drive mechanism (700); wherein... The outdoor gas pipe (500) is connected to the indoor exhaust pipe (630) at the end away from the waste heat recovery system (200). The PLC board (900) is used to read the data of the first temperature sensor (800) and adjust the positions of the two sets of valve cores in the second exhaust pipe (620) and the indoor exhaust pipe (630) respectively through the valve drive mechanism (700).

2. The low-carbon building insulation and ventilation device according to claim 1, characterized in that, The valve switching mechanism (640) includes: The first plug (641) is slidably disposed inside the second exhaust pipe (620) and is used to block the connection between the second exhaust pipe (620) and the three-way pipe (610); The second plug (642) is slidably disposed inside the indoor exhaust pipe (630) and is used to block the connection between the indoor exhaust pipe (630) and the tee pipe (610).

3. The low-carbon building insulation and ventilation device according to claim 2, characterized in that, The valve drive mechanism (700) includes: The first extension rod (710) is fixedly connected at one end to the first plug (641); The second extension rod (720) is fixedly connected at one end to the second plug (642), and the first extension rod (710) and the second extension rod (720) are arranged parallel to each other; The first guide groove (711) is formed on the outer wall of the first extension rod (710); The second guide groove (721) is formed on the outer wall of the second extension rod (720), and the cross sections of the first guide groove (711) and the second guide groove (721) are both right-angled triangles.

4. The low-carbon building insulation and ventilation device according to claim 3, characterized in that, The valve drive mechanism (700) further includes: A drive rod (730) is disposed between the first extension rod (710) and the second extension rod (720); The triangular piece (740) is provided in two sets. The two sets of triangular pieces (740) are respectively fixed at both ends of the drive rod (730) and are respectively slidably disposed in the first guide groove (711) and the second guide groove (721). The clamping plate (750) is fixedly installed inside the box (100), and the drive rod (730) slides through the clamping plate (750); An electric push rod (760) is located on one side of the drive rod (730). Its fixed end is installed inside the housing (100), and its output end is fixedly connected to the side wall of the drive rod (730). The electric push rod (760) is electrically connected to the PLC board (900). The PLC board (900) is used to identify the temperature inside the waste heat recovery system (200) and adjust the horizontal position of the drive rod (730). The drive rod (730) drives the first plug (641) and the second plug (642) to slide inside the second exhaust pipe (620) and the indoor exhaust pipe (630) through the triangular piece (740).

5. The low-carbon building insulation and ventilation device according to claim 4, characterized in that, The waste heat recovery system (200) includes: The outer shell (210) has an air intake area (211), a buffer area (212), and a transition area (213) inside, and the air intake area (211), the buffer area (212), and the transition area (213) are arranged sequentially along the gas flow direction; Double partitions (220) are fixedly disposed at intervals inside the outer shell (210) to separate the air intake area (211), the buffer area (212), and the transition area (213). A plurality of honeycomb tubes (230) are provided, and the plurality of honeycomb tubes (230) are fixedly disposed at intervals in the transition area (213). The two ends of each honeycomb tube (230) are respectively connected to the air intake area (211) and the buffer area (212). An indoor fan (240) has its air inlet fixedly connected to one end of the three-way pipe (610), and the air inlet of the indoor fan (240) is connected to the buffer area (212); wherein The indoor air intake component (300) is connected to the air intake area (211) at the end furthest from the indoor space, and the outdoor air intake component (400) is connected to the transition area (213) at the end closest to the waste heat recovery system (200). The identification end of the first temperature sensor (800) is located in the transition area (213).

6. The low-carbon building insulation and ventilation device according to claim 5, characterized in that, The indoor air intake assembly (300) includes: The first L-tube (310) has one end passing through the box (100) and fixedly connected to the indoor gas inlet of the waste heat recovery system (200), and the other end is arranged in a hole drilled in the indoor wall. The first L-tube (310) is inclined upward at the end closest to the indoor wall. The air intake cover (320) has multiple air intake holes on its outer circumferential wall. The air intake cover (320) is threadedly connected to the inner wall of the first L-tube (310) near the interior. An intake filter element (330) is disposed on the inner wall of the end of the first L-tube (310) near the interior. Sound-absorbing cotton (340) is wrapped around the circumferential outer wall of the first L-tube (310) and is located between the first L-tube (310) and the hole drilled in the wall; wherein The inner wall of the first L-tube (310) is provided with a boss (311), which is used to restrict the air intake filter (330) from sliding along the first L-tube (310) axially.

7. The low-carbon building insulation and ventilation device according to claim 6, characterized in that, The outdoor air intake assembly (400) includes an electrothermal filter mechanism (410), which includes: An air intake hopper (411) is fixedly installed on the inner bottom surface of the box (100), and the large opening end of the air intake hopper (411) is connected to the outer wall of the box (100); An extension tube (412) is fixedly connected at one end to the small opening end of the air inlet hopper (411) and is arranged vertically; The electric heating chamber (413) is cylindrical and closed at both ends. The electric heating chamber (413) and the extension tube (412) are coaxially arranged. The end of the extension tube (412) away from the air inlet hopper (411) passes through the bottom surface of the electric heating chamber (413) and extends into the interior of the electric heating chamber (413). A heating wire (414) is disposed in the interlayer of the heating chamber (413), which has a double-layer structure. The heating wire (414) is electrically connected to the PLC board (900), which is used to adjust the power of the heating wire (414) by identifying the temperature in the waste heat recovery system (200). A spiral scraper (415) is coaxially fixed to the inner wall of the electric heating chamber (413); An air filter (416) is disposed inside the electric heating chamber (413), and its circumferential outer wall abuts against the spiral scraper (415). The spiral scraper (415) extends vertically downward on the side near the air filter (416).

8. The low-carbon building insulation and ventilation device according to claim 7, characterized in that, The outdoor air intake assembly (400) further includes a filter element drive mechanism (420), which includes: The drive motor (421) is fixedly installed inside the housing (100); One end of the swing arm (422) is fixedly connected to the output end of the drive motor (421); The guide rail (423) is horizontally arranged, and the end of the swing rod (422) away from the drive motor (421) is slidably disposed in the guide rail (423); A vertical block (424) is fixedly disposed at the lower part of the guide rail (423) and is fixedly connected to the bottom surface of the guide rail (423); The slide rail (425) is fixedly installed on the inner wall of the box (100), and the vertical block (424) is vertically slidably installed in the slide rail (425); A groove (426) is horizontally formed on the surface of the vertical block (424); The rack (427) is slidably disposed within the groove (426); A gear (428) is disposed on the surface of the vertical block (424) and meshes with the rack (427); Vertical rods (429) are spaced vertically on the surface of the vertical block (424), and gears (428) are fixedly sleeved on the circumferential outer wall of the vertical rods (429); The mounting ears (430) are provided in two sets. The two sets of mounting ears (430) are fixedly disposed on the surface of the vertical block (424) at vertical intervals. The upper part of the vertical rod (429) is rotatably installed in the two sets of mounting ears (430). The bottom end of the vertical rod (429) is fixedly connected to the top surface of the air filter (416). The first air guide tube (431) is connected at one end to the inner wall of the air filter (416); An air storage box (432) is fixedly installed inside the box body (100), and the other end of the first air guide pipe (431) is fixedly connected to the air storage box (432); The second air guide tube (433) is fixedly connected at one end to the air storage box (432); The outdoor fan (434) has its air inlet end fixedly connected to the other end of the second air duct (433); The third air duct (435) is fixedly connected at one end to the air outlet of the outdoor fan (434) and at the other end to the outdoor gas inlet of the waste heat recovery system (200).

9. The low-carbon building insulation and ventilation device according to claim 8, characterized in that, The outdoor air intake assembly (400) further includes a steam sterilization mechanism (436), which includes: An electric steam generator (437) is fixedly installed inside the housing (100); The water supply pipe (438) is fixedly connected at one end to the water inlet of the electric steam generator (437), and the other end passes through the outer wall of the box (100) and is arranged at the end of the indoor air intake assembly (300) near the room. One end of the steam pipe (439) is fixedly connected to the steam output port of the electric steam generator (437); An elastic airbag (440) is disposed inside the box (100) and fixedly connected to the other end of the steam pipe (439); The guide rod (441) has one end fixed to one side of the drive motor (421) and the other end set close to the vertical rod (429). The elastic airbag (440) is sleeved on the outer wall of the guide rod (441). The pressure plate (442) is slidably sleeved on the circumferential outer wall of the guide rod (441). One side of the pressure plate (442) is fixedly connected to the end of the elastic airbag (440), and one end of the rack (427) is fixedly connected to the side of the pressure plate (442) away from the elastic airbag (440). The jet pipe (443) is fixedly connected at one end to the elastic airbag (440), and at the other end it penetrates the top surface of the electric heating chamber (413) and extends into the air filter (416).

10. The low-carbon building insulation and ventilation device according to claim 9, characterized in that, The water supply pipe (438) is arranged at one end near the room and the first L pipe (310) of the indoor air intake assembly (300) is arranged at one end near the room. The jet pipe (443) extends into the air filter (416) and has multiple steam jet holes. The multiple steam jet holes are evenly distributed along the circumference of the jet pipe (443). The elastic airbag (440) contracts and expands as the pressure plate (442) slides, and is used to spray steam through the jet pipe (443) onto the inner wall of the air filter (416).

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