Energy-saving ventilation device for building

Abstract

This utility model discloses an energy-saving building ventilation device. The ventilation box contains a hollow cavity with an air inlet and an air outlet on opposite sides. An openable / closed door divides the hollow cavity into upper and lower parts; the door can be opened and closed as needed. A dust removal structure is located in the upper part of the hollow cavity, using electrostatic adsorption to attract dust from the circulating air. A collection frame is placed in the lower part of the hollow cavity. This system filters and cleans dust from the air, improving the quality of the ventilated air. An internal partition baffle optimizes the ventilation channel, and a support plate is installed to clean dust adsorbed on the dust removal roller, facilitating the reuse of the dust removal structure. Ventilation regulating components are installed at both the air inlet and outlet to increase air intake efficiency. An opening and closing device is provided on the ventilation regulating components to close the air inlet and outlet when not ventilating, effectively cutting off ventilation and preventing debris from entering the ventilation device.

Description

Technical Field

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

[0002] Building ventilation systems are devices used to improve ventilation within buildings. Their main function is to exhaust polluted indoor air while introducing fresh air to maintain indoor air quality that meets hygiene standards. Building ventilation systems effectively promote indoor-outdoor air exchange, providing a healthy and safe working environment for people inside the building and keeping the air fresh. In emergencies, they have the ability to quickly remove smoke, ensuring personnel safety.

[0003] Common ventilation devices include window ventilators, natural ventilators, and wall-mounted ventilators. They mainly achieve ventilation of the building interior through the interaction of air inside and outside the building. However, in actual use, the outside air contains particulate matter such as dust, and directly introducing outside air into the building can easily affect the air quality inside the building. Utility Model Content

[0004] To address the aforementioned shortcomings of existing technologies, an energy-saving building ventilation device is provided that filters and cleans dust from the air, thereby improving the quality of the ventilated air.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] Energy-saving building ventilation system, characterized in that: it includes

[0007] The ventilation box has a hollow cavity inside, and air inlets and outlets that communicate with the hollow cavity are respectively provided on opposite sides of the box.

[0008] The opening and closing airtight door structure is horizontally arranged in the middle of the hollow cavity, dividing the hollow cavity into upper and lower parts; when the weight of dust at the top of the opening and closing airtight door exceeds a set value, the opening and closing airtight door opens.

[0009] The dust removal structure is located in the upper part of the hollow cavity and is connected to an external power source. It uses electrostatic adsorption to attract dust in the air flowing between the air inlet and the air outlet; and during non-air intake periods, it gathers the dust onto the upper surface of the opening and closing airtight door structure.

[0010] The collection frame is located in the lower part of the hollow cavity by being pulled out.

[0011] According to the above technical solution, several parallel and spaced partition baffles are provided inside the hollow cavity. The upper area of ​​the hollow cavity is divided into a single ventilation channel by the partition baffles. The dust removal structure is located in the single ventilation channel, and the air inlet and air outlet are located at the beginning and end of the single ventilation channel, respectively.

[0012] According to the above technical solution, the dust collection structure includes several dust collection rollers located at the upper part of the hollow cavity, and the dust collection rollers include a support crossbar and adsorption fan blades fixed to the periphery of the support crossbar.

[0013] According to the above technical solution, it also includes a support plate, which is slidably connected to the side walls of the hollow cavities at both ends of the support roller. A horizontal through groove is also provided on the side wall of the hollow cavity, and the end of the dust removal roller passes through the horizontal through groove and is fixedly installed on the support plate.

[0014] According to the above technical solution, a reciprocating transmission column and a reset transmission column are fixedly provided on the support plate; a first support block, a reciprocating drive linkage rotatably connected to the first support block via a rotating shaft, and a drive motor for driving the reciprocating drive linkage to rotate are provided on the upper surface of the ventilation box corresponding to the position of the support plate, and the reciprocating drive linkage and the reciprocating transmission column are adapted to each other; a second support block, an L-shaped reset linkage rotatably connected to the second support block via a rotating shaft, and a reset torsion spring located between the L-shaped reset linkage and the second support block are provided on the upper surface of the ventilation box corresponding to the position of the support plate, and the L-shaped reset linkage and the reset transmission column and the reciprocating drive linkage are adapted to each other.

[0015] According to the above technical solution, the opening and closing airtight door structure includes two downward-opening airtight doors and an arc-shaped return spring connecting the opening and closing airtight doors and the lower inner wall of the hollow cavity.

[0016] According to the above technical solution, it also includes a ventilation regulating component, which is equipped with an air inlet and an air outlet;

[0017] The ventilation control assembly includes a ventilation support pipe fixedly connected to the air inlet or outlet, a support frame fixed inside the ventilation pipe, a circulating fan rotatably connected to the support frame, and a motor that drives the circulating fan to rotate.

[0018] According to the above technical solution, it also includes an opening and closing device, which includes an opening and closing support pipe fixedly connected to the outside of the ventilation support pipe, an opening and closing control shaft fixed in the middle of the opening and closing support pipe, and a plurality of opening and closing adjusting fan blades rotatably connected between the opening and closing control shaft and the inner wall of the opening and closing support pipe; the opening and closing support pipe and the ventilation support pipe are coaxially arranged, and a single opening and closing adjusting fan blade is radially arranged with the opening and closing control shaft as the center; when the opening and closing adjusting fan blade rotates to a certain set angle, the plurality of opening and closing adjusting fan blades are attached to each other to form a sealing plate, the sealing plate has a ring structure, the inner section is attached to the opening and closing control shaft, and the outer section is attached to the inner wall of the opening and closing support pipe.

[0019] According to the above technical solution, it also includes a drive ring rotatably connected to the outside of the opening and closing support tube. Several opening and closing transmission columns are fixedly provided on the circumference of the drive ring, and the positions of the opening and closing transmission columns match the positions of the opening and closing adjusting fan blades.

[0020] The rotating shaft of the opening and closing adjusting fan blade passes through and protrudes from the outer wall of the opening and closing support tube. A fixing block is provided at the protruding end of the rotating shaft, and a drive slide is provided on the fixing block along the axis of the opening and closing support tube; the transmission column is placed in the drive slide groove.

[0021] According to the above technical solution, a sector gear is provided at the top of the circumference of the drive ring, and a transmission rack and a linear drive unit for driving the transmission rack to move linearly are provided at the top of the ventilation box near the air inlet and air outlet. The transmission rack and the sector gear mesh with each other, and the linear drive unit drives the transmission rack to move linearly, thereby achieving the purpose of driving the sector gear to rotate.

[0022] This utility model has the following beneficial effects:

[0023] 1. By setting up a ventilation box, airflow enters through the air inlet and exits through the air outlet, passing through the hollow cavity of the ventilation box. The dust collection structure located in the upper part of the hollow cavity, when connected to an external power source, uses electrostatic attraction to attract dust, thus removing dust from the incoming air. During non-ventilation periods, the power is disconnected, and the dust inside the dust collection structure is shaken off onto the opening and closing airtight door structure. Once the dust accumulates to a certain level on the upper part of the opening and closing airtight door structure, the door is opened, collecting the dust into the collection frame. The opening and closing airtight door structure serves to isolate the collection frame from the dust collection structure at the top, preventing dust from the collection frame from being brought into the room during ventilation.

[0024] Based on the above structure, dust in the air is filtered and cleaned, improving the quality of the ventilated air.

[0025] 2. A partition baffle is built into the hollow cavity to optimize the ventilation channel within the cavity, thereby increasing the length of the ventilation channel and improving the dust removal effect.

[0026] 3. A reciprocating support plate is installed, with dust removal rollers mounted on it for cleaning dust adsorbed on the rollers, facilitating the reuse of the dust removal structure. To improve the automation and ease of use of the device, a reciprocating drive column, a reset drive column, a reciprocating drive linkage, and an L-shaped reset linkage are added to enable the reciprocating movement of the support plate on the ventilation box.

[0027] 4. Ventilation adjustment components are installed at both the air inlet and outlet to increase air intake efficiency; and when there is thick smoke or odor in the room, the reversing of the circulating fan will quickly expel the thick smoke or odor.

[0028] 5. Install opening and closing devices on the ventilation regulating components to close the air inlet and outlet when not ventilated, thereby cutting off ventilation and preventing debris from entering the ventilation device.

[0029] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0031] Figure 1 A structural schematic diagram of an embodiment of this utility model is provided.

[0032] Figure 2 A schematic diagram of an embodiment of this utility model (excluding ventilation and adjustment components).

[0033] Figure 3 Another structural schematic diagram of an embodiment of this utility model (excluding ventilation adjustment components).

[0034] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0035] Figure 5 A longitudinal structural cross-sectional view of the ventilation box body provided for an embodiment of this utility model.

[0036] Figure 6 A partial transverse structural cross-sectional view of the ventilation box body provided for an embodiment of this utility model.

[0037] Figure 7 A schematic diagram of the ventilation regulating component and opening / closing device provided for embodiments of this utility model.

[0038] Figure 8 Another structural schematic diagram of the ventilation regulating component and opening / closing device provided for embodiments of this utility model.

[0039] In the diagram, 1. Ventilation box; 1-1. Hollow cavity; 2. Air inlet; 3. Air outlet; 4. Opening and closing airtight door structure; 4-1. Opening and closing airtight door; 4-2. Arc-shaped return spring; 5. Dust removal structure; 6. Collection frame; 5-1. Dust removal roller; 5-3. Support plate; 5-4. Reciprocating transmission column; 5-5. Return transmission column; 5-6. First support block; 5-7. Reciprocating drive linkage; 5-8. Second support block; 5-9. L-shaped return linkage; 7. Dividing baffle; 8. Ventilation adjustment assembly; 8-1. Ventilation support pipe 8-2. Support frame; 8-3. Circulating fan; 9. Opening and closing device; 9-1. Opening and closing support tube; 9-2. Opening and closing control shaft; 9-3. Opening and closing adjusting fan blades; 9-31. Rotating shaft; 9-4. Drive ring; 9-5. Opening and closing transmission column; 9-6. Fixing block; 9-61. Drive slide; 9-7. Sector gear; 9-8. Transmission rack; 9-9. Linear drive unit; 9-91. Guide slide; 9-92. Guide transmission block; 9-93. Return spring; 9-94. Electromagnet; 9-95. Magnetic suction plate. Detailed Implementation

[0040] The following is in conjunction with the appendix Figure 1-8 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0041] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0042] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0043] Reference Figures 1-6As shown, this utility model provides an energy-saving building ventilation device.

[0044] Example 1

[0045] include

[0046] The ventilation box 1 has a hollow cavity 1-1 inside. On opposite sides of the box, there are air inlets 2 and air outlets 3 that communicate with the hollow cavity. The air inlets are connected to the external environment, and the air outlets are connected to the interior of the building.

[0047] The opening and closing airtight door structure 4 is horizontally arranged in the middle of the hollow cavity, dividing the hollow cavity into upper and lower parts; when the weight of the dust at the top of the opening and closing airtight door is greater than the set value, the opening and closing airtight door opens.

[0048] Dust removal structure 5 is located in the upper part of the hollow cavity and is connected to an external power source. It uses electrostatic adsorption to attract dust in the air flowing between the air inlet and the air outlet; and during non-air intake periods, it gathers the dust onto the upper surface of the opening and closing airtight door structure.

[0049] The collection frame 6 is located in the lower part of the hollow cavity by means of a pull-out mechanism. A collection port is provided in the lower part of the ventilation box, and the collection frame is slidably connected to the collection port.

[0050] This invention features a ventilation box where airflow enters through the inlet and exits through the outlet, passing through the hollow cavity of the ventilation box. A dust-collecting structure located in the upper part of the hollow cavity, when connected to an external power source, uses electrostatic attraction to attract dust, thus removing dust from the incoming air. During non-ventilation periods, the power is disconnected, allowing dust to be shaken off the dust-collecting structure and onto a hinged door. Once a certain amount of dust accumulates on the upper part of the hinged door, it is opened to collect the dust into a collection frame. The hinged door structure serves to isolate the collection frame from the top dust-collecting structure, preventing dust from the collection frame from being brought into the room during ventilation.

[0051] Based on the above structure, dust in the air is filtered and cleaned, improving the quality of the ventilated air.

[0052] Example 2

[0053] Based on Example 1, in order to optimize the airflow channel in the upper part of the hollow cavity, several parallel and spaced partition baffles 7 are provided inside the hollow cavity. The top of the partition baffles is attached to or fixed to the inner wall of the top of the hollow cavity, and the bottom of the partition baffles is attached to the bottom of the opening and closing airtight door structure. The upper part of the hollow cavity is divided into a single ventilation channel by several partition baffles. The dust removal structure is located in the single ventilation channel, and the air inlet and air outlet are located at the beginning and end of the single ventilation channel, respectively.

[0054] As shown in the figure, two partition plates are installed in the upper space. These plates are fixed to opposite inner walls of the hollow cavity, on different sides of the inner walls where the air inlet and outlet are located. The partition plates divide the upper part of the hollow cavity into three ventilation zones, which are interconnected to form an S-shaped ventilation duct. During ventilation, the airflow direction is controlled, and the dust removal structure, electrically connected to an external power source, uses electrostatic adsorption to attract dust from the airflow.

[0055] In Examples 1 and 2, a preferred form of dust removal structure is provided. The dust collection structure includes a plurality of dust removal rollers 5-1 disposed in the upper part of the hollow cavity, and the dust removal rollers include a support crossbar and adsorption fan blades fixed to the periphery of the support crossbar.

[0056] In this preferred form of dust removal structure, in order to facilitate cleaning of dust on the fan blades, a support plate 5-3 is also included. The support plate is slidably connected to the side walls of the hollow cavities at both ends of the support roller. A horizontal through groove is also provided on the side wall of the hollow cavity. The end of the dust removal roller passes through the horizontal through groove and is fixedly installed on the support plate.

[0057] This embodiment has two arrangement configurations;

[0058] First, as shown in the figure, the hollow cavity is a rectangular cavity. The air inlet and outlet are located on one set of opposite sidewalls of the hollow cavity. A first sliding groove is provided on another set of opposite sidewalls of the hollow cavity, and the first sliding groove does not penetrate through the sidewall of the hollow cavity. Within the range of the first sliding groove, multiple horizontal through slots are set according to the installation position of the dust removal roller. The two ends of the dust removal roller pass through the horizontal through slots and are fixedly connected in the first sliding groove. As the support plate slides in the first sliding groove, it drives the dust removal roller to slide in the horizontal channel.

[0059] Second, the first chute is set on a set of opposite sidewalls of the hollow cavity where the air inlet and air outlet are located, which is not shown in the figure; the difference between this embodiment and the embodiment in the figure is that the positions of the air duct and the dust removal rod need to be rotated by 90°.

[0060] When the ventilation function of this device is not in use, the support plate slides repeatedly within the first groove, causing the end of the support roller to slide within the horizontal channel. This causes the adsorption fan blades within the support roller to vibrate, dislodging dust onto the top of the lower opening and closing airtight door structure. The support plate also provides a certain degree of sealing to the horizontal channel within the first groove.

[0061] In the above structure, in order to realize the function of automatic reciprocating movement of the support plate in the first slide groove, a reciprocating transmission column 5-4 and a reset transmission column 5-5 are fixedly provided on the support plate; a first support block 5-6, a reciprocating drive linkage 5-7 rotatably connected to the first support block via a rotating shaft, and a drive motor for driving the reciprocating drive linkage to rotate are provided on the upper surface of the ventilation box corresponding to the position of the support plate, the reciprocating drive linkage and the reciprocating transmission column are adapted to each other; a second support block 5-8, an L-shaped reset linkage 5-9 rotatably connected to the second support block via a rotating shaft, and a reset torsion spring located between the L-shaped reset linkage and the second support block are provided on the upper surface of the ventilation box corresponding to the position of the support plate, the L-shaped reset linkage and the reset transmission column and the reciprocating drive linkage are adapted to each other.

[0062] After ventilation is completed, the power supply to the dust removal structure is disconnected, and the drive motor drives the reciprocating drive linkage to rotate. During the rotation of the reciprocating drive linkage, when the reciprocating drive linkage comes into contact with the reciprocating transmission column, the reciprocating drive linkage pushes the reciprocating transmission column to move, thereby causing the reciprocating transmission column to drive the support plate and the reset transmission column to move synchronously, and the dust removal roller also moves synchronously with the support plate.

[0063] The reciprocating drive linkage continues to rotate. When the dust removal roller moves to the end of the first chute, the reciprocating drive linkage and the reset transmission column separate, and the reciprocating drive linkage continues to rotate in the direction of rotation. Subsequently, the reciprocating drive linkage and the L-shaped reset linkage come into contact.

[0064] As the reciprocating drive linkage continues to rotate, it pushes the L-shaped reset linkage to rotate. The rotation of the L-shaped reset linkage pushes the reset transmission column, causing the reset transmission column to drive the support plate and the reciprocating transmission column to move horizontally in opposite directions synchronously. The dust removal roller moves in opposite directions synchronously with the support plate, thus restoring it to its initial state.

[0065] Based on the above process, the continuous rotation of the reciprocating drive linkage drives the support plate to move back and forth in a cycle, thereby causing the dust removal roller to move horizontally back and forth synchronously to clean the dust on the periphery of the dust removal roller. The dust that falls off due to vibration falls onto the opening and closing airtight door structure; when the weight of the dust on the opening and closing airtight door structure is large, the opening and closing airtight door structure rotates under the action of gravity, and the dust falls back into the collection frame through the inclined opening and closing airtight door structure for collection.

[0066] Example 3

[0067] Based on the above structure, a preferred structural form of the opening and closing airtight door is presented. The opening and closing airtight door structure includes two downward-opening airtight doors 4-1, and an arc-shaped return spring 4-2 connecting the opening and closing airtight doors and the inner wall of the lower part of the hollow cavity. The arc-shaped return spring supports the opening and closing airtight door, and the door opens when the weight of the dust on the top of the opening and closing airtight door is greater than the supporting force of the arc-shaped return spring.

[0068] To facilitate opening and closing the airtight door when the weight of the dust is less than the supporting force of the arc-shaped return spring, the door's pivot passes through the hollow cavity, and a handle is provided at the end of the pivot. The user applies a rotational force to the handle, overcoming the force of the arc-shaped return spring, thus opening and closing the airtight door.

[0069] Example 4

[0070] Based on the above embodiments 1-3, in order to further optimize the effect of the ventilation device.

[0071] It also includes a ventilation control component 8, which has an air inlet and an air outlet.

[0072] The ventilation control assembly includes a ventilation support pipe 8-1 fixedly connected to the air inlet or outlet, a support frame 8-2 fixed inside the ventilation pipe, a circulating fan 8-3 rotatably connected to the support frame, and a motor driving the circulating fan. The motor is not shown in the diagram. The circulating fan has forward and reverse rotation functions and its speed can be adjusted as needed.

[0073] In the embodiment shown in the figure, both the air inlet and outlet are located in a circular perforated structure, and the ventilation support pipe is coaxially arranged with the corresponding air inlet and outlet. The circulating fans at the air inlet and outlet rotate in opposite directions to facilitate control of the airflow direction during ventilation and to achieve air exchange between the inside and outside of the building.

[0074] Example 5

[0075] See Figures 7-8As shown, based on the above embodiment 4, in order to prevent dust and other debris from entering the ventilation device when it is not in use, an opening and closing device 9 is also included. The opening and closing device includes an opening and closing support pipe 9-1 fixedly connected to the outside of the ventilation support pipe, an opening and closing control shaft 9-2 fixed in the middle of the opening and closing support pipe, and a plurality of opening and closing adjusting fan blades 9-3 rotatably connected between the opening and closing control shaft and the inner wall of the opening and closing support pipe via a rotating shaft 9-31. The opening and closing support pipe and the ventilation support pipe are coaxially arranged, and a single opening and closing adjusting fan blade is radially arranged with the opening and closing control shaft as the center. When the opening and closing adjusting fan blade rotates to a certain set angle, the plurality of opening and closing adjusting fan blades are attached to each other to form a sealing plate. The sealing plate has a ring structure, with the inner section attached to the opening and closing control shaft and the outer section attached to the inner wall of the opening and closing support pipe.

[0076] When ventilation is required, the opening and closing regulating fan blades are rotated, creating a gap between them to connect the spaces on both sides of the blades; this state is called the open state of the opening and closing device. After the opening and closing device is open, the circulating fans at the air inlet and outlet are controlled to rotate synchronously, allowing outside air to flow into the ventilation box through the air inlet and then into the building through the air outlet.

[0077] During ventilation, airflow passes through the ventilation duct and over the dust collection rollers of the dust collection structure, which are energized. Electrostatic adsorption is used to attract dust from the airflow, causing it to adhere to the periphery of the dust collection rollers. After ventilation, the opening and closing adjustment fan blades rotate and come into contact with each other, forming a sealed plate; this state is called the closed state of the opening and closing device. Simultaneously, when the dust collection rollers are de-energized, they are controlled to move horizontally back and forth, shaking the dust adsorbed on their periphery onto the opening and closing sealed door structure.

[0078] A method for driving the opening and closing adjustment fan blades to rotate is provided, which also includes a drive ring 9-4 rotatably connected to the outside of the opening and closing support tube. Several opening and closing transmission columns 9-5 are fixedly provided on the circumference of the drive ring, and the positions of the opening and closing transmission columns are matched with the positions of the opening and closing adjustment fan blades.

[0079] The rotating shaft of the opening and closing adjusting fan blade passes through and protrudes from the outer wall of the opening and closing support tube. A fixing block 9-6 is provided at the protruding end of the rotating shaft. A drive slide 9-61 is provided on the fixing block along the axis of the opening and closing support tube. The transmission column is placed in the drive slide groove.

[0080] To achieve the function of automatically rotating the fan blades by adjusting the opening and closing, a sector gear 9-7 is provided at the top of the drive ring, and a transmission rack 9-8 and a linear drive unit 9-9 for driving the transmission rack to move linearly are provided at the top of the ventilation box near the air inlet and air outlet. The transmission rack and the sector gear mesh with each other, and the linear drive unit drives the transmission rack to move linearly, thereby achieving the purpose of driving the sector gear to rotate.

[0081] The linear drive unit adopts the existing form of a motor-driven lead screw and nut pair or a linear telescopic cylinder structure. This application provides a preferred structural form of the linear drive unit, in which guide grooves 9-91 corresponding to the air inlet and outlet are opened on the upper surface of the ventilation box. A guide transmission block 9-92 is slidably arranged inside the guide groove, and a transmission rack is fixedly connected to one side of the guide transmission block through a support cross plate. A return spring 9-93 is provided on one side of the guide transmission block, and an electromagnet 9-94 and a magnetic suction plate 9-95 are provided on the other side. The electromagnet is electrically connected to an external power source. When the electromagnet is energized, the electromagnet and the corresponding magnetic suction plate are magnetically attracted to each other under the action of magnetic attraction, driving the guide transmission block to move in the guide groove, and the transmission return spring is in a stretched state. When the electromagnet is de-energized, the stretched transmission return spring releases elastic potential energy, and the guide transmission block moves to the initial position.

[0082] Before ventilation, disconnect the external power supply to the electromagnet. The electromagnet's magnetic attraction disappears, and the elastic recovery of the transmission return spring causes the guide transmission block to slide horizontally along the guide groove, driving the transmission rack to move synchronously. The meshing of the transmission rack with the corresponding sector gear causes the sector gear to rotate. During this process, the sector gear drives the drive ring to rotate, and the opening / closing transmission column moves synchronously with the drive ring. The sliding engagement between the opening / closing transmission column and the corresponding drive slide causes the fixed block to deflect synchronously, thereby driving the corresponding rotating shaft to rotate, and the opening / closing adjusting fan blades rotate with the rotating shaft. The synchronous rotation of the opening / closing adjusting fan blades opens the opening / closing support pipe, activating the circulating fan for ventilation.

[0083] After ventilation is completed, the external power supply of the electromagnet is turned on. Under the magnetic attraction between the electromagnet and the magnetic plate, the guide transmission block slides horizontally in the opposite direction, which in turn drives the transmission rack to move in the opposite direction, the sector gear to rotate in the opposite direction, and the opening and closing adjustment fan blades to rotate in the opposite direction until they are in contact with each other, and the opening and closing support tube is closed.

[0084] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. An energy-saving building ventilation system, characterized in that: include The ventilation box has a hollow cavity inside, and air inlets and outlets that communicate with the hollow cavity are respectively provided on opposite sides of the box. The opening and closing airtight door structure is horizontally arranged in the middle of the hollow cavity, dividing the hollow cavity into upper and lower parts; when the weight of dust at the top of the opening and closing airtight door exceeds a set value, the opening and closing airtight door opens. The dust removal structure is located in the upper part of the hollow cavity and is connected to an external power source. It uses electrostatic adsorption to attract dust in the air flowing between the air inlet and the air outlet; and during non-air intake periods, it gathers the dust onto the upper surface of the opening and closing airtight door structure. The collection frame is located in the lower part of the hollow cavity by being pulled out.

2. The energy-saving building ventilation device according to claim 1, characterized in that: The hollow cavity is equipped with several parallel and spaced partitions, which divide the upper part of the hollow cavity into a single ventilation channel. The dust removal structure is located in the single ventilation channel, with the air inlet and air outlet located at the beginning and end of the single ventilation channel, respectively.

3. The energy-saving building ventilation device according to claim 1 or 2, characterized in that: The dust collection structure includes several dust collection rollers located at the top of the hollow cavity. The dust collection rollers include a support crossbar and adsorption fan blades fixed to the periphery of the support crossbar.

4. The energy-saving building ventilation device according to claim 3, characterized in that: It also includes a support plate, which is slidably connected to the side walls of the hollow cavities at both ends of the support roller. A horizontal through groove is also provided on the side wall of the hollow cavity, and the end of the dust removal roller passes through the horizontal through groove and is fixedly installed on the support plate.

5. The energy-saving building ventilation device according to claim 4, characterized in that: A reciprocating transmission column and a reset transmission column are fixedly provided on the support plate; a first support block, a reciprocating drive linkage connected to the first support block via a rotating shaft, and a drive motor for driving the reciprocating drive linkage are provided on the upper surface of the ventilation box corresponding to the position of the support plate, and the reciprocating drive linkage is adapted to the reciprocating transmission column; a second support block, an L-shaped reset linkage connected to the second support block via a rotating shaft, and a reset torsion spring located between the L-shaped reset linkage and the second support block are provided on the upper surface of the ventilation box corresponding to the position of the support plate, and the L-shaped reset linkage is adapted to the reset transmission column and the reciprocating drive linkage.

6. The energy-saving building ventilation device according to claim 1, characterized in that: The opening and closing airtight door structure includes two downward-opening airtight doors and an arc-shaped return spring connecting the opening and closing airtight doors and the inner wall of the lower part of the hollow cavity.

7. The energy-saving building ventilation device according to claim 1, characterized in that: It also includes ventilation control components, which are installed with air inlets and air outlets; The ventilation control assembly includes a ventilation support pipe fixedly connected to the air inlet or outlet, a support frame fixed inside the ventilation pipe, a circulating fan rotatably connected to the support frame, and a motor that drives the circulating fan to rotate.

8. The energy-saving building ventilation device according to claim 7, characterized in that: It also includes an opening and closing device, which includes an opening and closing support pipe fixedly connected to the outside of the ventilation support pipe, an opening and closing control shaft fixed in the middle of the opening and closing support pipe, and several opening and closing adjusting fan blades rotatably connected between the opening and closing control shaft and the inner wall of the opening and closing support pipe. The opening and closing support pipe and the ventilation support pipe are coaxially arranged, and a single opening and closing adjusting fan blade is radially arranged with the opening and closing control shaft as the center. When the opening and closing adjusting fan blade rotates to a certain set angle, several opening and closing adjusting fan blades are attached to each other to form a sealing plate. The sealing plate has a ring structure, with the inner section attached to the opening and closing control shaft and the outer section attached to the inner wall of the opening and closing support pipe.

9. The energy-saving building ventilation device according to claim 8, characterized in that: It also includes a drive ring rotatably connected to the outside of the opening and closing support tube. Several opening and closing transmission columns are fixedly provided on the circumference of the drive ring, and the positions of the opening and closing transmission columns are matched with the positions of the opening and closing adjusting fan blades. The rotating shaft of the opening and closing adjusting fan blade passes through and protrudes from the outer wall of the opening and closing support tube. A fixing block is provided at the protruding end of the rotating shaft, and a drive slide is provided on the fixing block along the axis of the opening and closing support tube; the transmission column is placed in the drive slide groove.

10. The energy-saving building ventilation device according to claim 9, characterized in that: A sector gear is provided at the top of the drive ring. A transmission rack and a linear drive unit for driving the transmission rack to move linearly are provided at the top of the ventilation box near the air inlet and air outlet. The transmission rack and sector gear mesh with each other, and the linear drive unit drives the transmission rack to move linearly, thereby achieving the purpose of driving the sector gear to rotate.

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