Airtight ventilating fan structure

Abstract

The airtight ventilating fan structure comprises a rear cover, a bulkhead, a window frame, a fan assembly, a linkage assembly and a louver blade assembly, the window frame, the louver blade assembly and the linkage assembly are matched to form an opening state and a closing state, the airtight ventilating fan structure further comprises a flexible sealing frame, a first ventilation opening is formed in the bulkhead, and the window frame, the louver blade assembly, the rear cover and the bulkhead define a containing space. The linkage assembly is provided with an operating rod and connected with the louvre blade assembly. Steel plates and honeycomb plates are further included; the device further comprises a grid plate. According to the structural design, through cooperation of the window frame, the louver blade assembly and the linkage assembly, the opening and closing functions of the ventilator are achieved. Due to the arrangement of the flexible sealing frame, the louvre blades can be tightly attached in the closed state, external air, dust, peculiar smell and the like are effectively prevented from entering a room through gaps, the air tightness of the ventilating fan is improved, a better air environment is provided for the room, meanwhile, energy loss is reduced, and energy conservation and emission reduction are facilitated.

Description

Technical Field

[0001] This utility model relates to the field of ventilation fan manufacturing technology, and in particular to an airtight ventilation fan structure. Background Technology

[0002] Currently, there are many types of exhaust fans on the market; however, most have structural design flaws that fail to meet users' high requirements for airtightness and ventilation efficiency. Traditional exhaust fans have poor sealing performance, with inadequate sealing between the slats and the window frame. When closed, noticeable gaps often remain, allowing outside dust and odors to easily enter the room, affecting indoor air quality. This can also lead to heat or cold air loss, increasing energy consumption. Furthermore, some exhaust fans have simple slat structures, lacking effective sealing measures at the joints when closed, further reducing the sealing effect. In addition, the choice of materials and overall structural design of exhaust fans are also inadequate. Some exhaust fans are made of materials that are not sturdy and durable enough, easily leading to damage and deformation after prolonged use, thus affecting the performance and lifespan of the exhaust fan. Moreover, during ventilation, the airflow guidance and exhaust are not smooth enough, resulting in low ventilation efficiency and an inability to effectively refresh indoor air in a timely manner. Summary of the Invention

[0003] This utility model addresses the shortcomings of existing technologies that cannot simultaneously achieve airtightness and ventilation by providing a new airtight ventilation fan structure.

[0004] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0005] An airtight ventilation fan structure includes a rear cover, a bulkhead, a window frame, a fan assembly, a linkage assembly, and a window blade assembly. The window frame, window blade assembly, and linkage assembly cooperate to form an open state and a closed state. It also includes a flexible sealing frame. The bulkhead is provided with a first ventilation opening. The rear cover and the window frame are respectively fixed to both sides of the first ventilation opening. The window blade assembly includes at least two window blades and a blade sealing strip provided on the window blades. The window blades are rotatably connected to the window frame. The blade sealing strip is provided at the tail end of the window blade away from the rotatable connection. The flexible sealing frame is fixed to the window frame. In the closed state, the tail end of the window blade abuts against the flexible sealing frame. The window frame, window blade assembly, rear cover, and bulkhead together form an accommodating space. The fan assembly is placed in the accommodating space. The linkage assembly is fixed to the window frame. The linkage assembly is provided with a control lever and is connected to the window blade assembly.

[0006] It also includes a steel plate and a honeycomb panel. The steel plate is fixed to the surface of the first ventilation opening on one side of the rear cover. The steel plate is provided with a second ventilation opening. The honeycomb panel is fixed to the steel plate and covers the second ventilation opening.

[0007] It also includes a grid plate, which is fixed to the window frame. The steel plate, honeycomb plate, grid plate, and window frame bulkhead together form a ventilation space, and the fan assembly is placed in the ventilation space.

[0008] This structural design, through the cooperation of the window frame, window slat assembly, and linkage components, enables the ventilation fan to open and close. The flexible sealing frame ensures a tight seal when the window slats are closed, effectively preventing outside air, dust, and odors from entering the room through gaps. This improves the airtightness of the ventilation fan, provides a better indoor air environment, and reduces energy loss, thus contributing to energy conservation and emission reduction.

[0009] The opening and closing of the window shutters can be controlled by using the joystick.

[0010] The combination of steel plate, honeycomb panel, and mesh panel, with the steel plate fixed to the surface of the first vent on one side of the rear cover and a second vent provided, and the honeycomb panel fixed to the steel plate and covering the second vent, enhances the overall structural strength of the ventilation fan, improves its durability and impact resistance, and better adapts to the needs of use in different environments. Furthermore, the honeycomb panel has excellent ventilation and filtration functions, ensuring normal air circulation while initially filtering incoming air, blocking some large dust particles and impurities, further improving indoor air quality, enhancing the practicality and functionality of the ventilation fan, and enabling it to perform better during ventilation.

[0011] Bulletproof plates can be added to the outside of the window leaf assembly and window frame to increase strength.

[0012] The honeycomb panel is a shielded honeycomb panel that can shield electromagnetic signals.

[0013] The opening and closing of the window leaf can be controlled by an unlimited switch, which will automatically stop when the limit is reached, or it can be controlled by a limit switch, which will stop when the leaf touches the limit switch.

[0014] Preferably, in the airtight ventilation fan structure described above, the window blade includes a rotating connecting part, a blade, and a baffle. The upper edge of the blade is connected to the rotating connecting part, and the lower edge of the blade is connected to the baffle. In the closed state, the baffle covers the rotating connecting part of the adjacent blade.

[0015] This window slat assembly design, when closed, allows the baffle to cover the rotating connection of adjacent slats, thereby reducing leakage of rainwater and other substances from the gaps in the rotating connection, enhancing the overall sealing of the window slat, further improving the sealing effect when the ventilation fan is closed, and improving the overall performance and user experience of the product.

[0016] Preferably, in the airtight ventilation fan structure described above, a blade sealing strip is fixed to the lower edge of the blade and the inner side of the baffle. When the blade is closed, the blade sealing strip abuts against the rotating connection of the adjacent window blade.

[0017] The blade sealing strip ensures that, when closed, it tightly abuts against the rotating connection of adjacent window blades, further enhancing the sealing performance between window blades and between window blades and the window frame. This multi-layer sealing structure effectively solves the problem of poor sealing caused by the simple structure of traditional ventilation fans, improving the airtightness of the ventilation fan and providing users with a better experience.

[0018] Preferably, in the airtight ventilation fan structure described above, the flexible sealing frame is provided with blade slot protrusions, which are disposed between two adjacent window blades. In the closed state, the blade slot protrusions abut against the space between the blade sealing strips and the rotating connection parts of the two adjacent window blades.

[0019] The flexible sealing frame's blade seam protrusion design effectively fills the tiny gaps between the slats when closed, further enhancing the stability of the seal. Even if the slats undergo minor deformation due to long-term use, impact, or wear, the blade seam protrusions still provide excellent sealing compensation, extending the lifespan of the ventilation fan and the duration of its sealing performance, thus reducing maintenance costs and replacement frequency.

[0020] As a preferred embodiment, in the airtight ventilation fan structure described above, the window blade is provided with a blade groove, and the end of the baffle is provided with a baffle bend, the baffle bend extending into the blade groove in the closed state.

[0021] The combination of the baffle bending and the blade groove further enhances the shielding of the gaps between adjacent blades, which helps to reduce the infiltration of rainwater.

[0022] As a preferred embodiment, in the airtight ventilation fan structure described above, the window frame includes an outer frame and an inner frame. The outer frame is connected to the bulkhead, and the inner frame connects the outer frame to the rotating connection part. The inner frame is provided with a shaft hole, and the rotating connection part is rotatably connected to the shaft hole by means of a pin. The inner frame is provided with an anti-protrusion groove, and the shaft hole is located in the anti-protrusion groove.

[0023] The anti-protrusion groove is used to accommodate the pin inserted into the shaft hole, preventing the pin from colliding with the outer frame and ensuring smooth opening of the window leaf.

[0024] Preferably, in the airtight ventilation fan structure described above, the blade thickness W1 is 10mm and the outer frame thickness W2 is 17mm.

[0025] Specifying the exact thickness of the blades and outer frame allows for optimization of the overall size and weight of the ventilation fan while ensuring the structural strength of the window blades. This ensures that the fan meets the requirements for airtightness and structural stability without compromising ventilation efficiency and ease of installation due to excessive thickness, thus helping to achieve a balance between performance and cost. The profile wall thickness used for the blades is 1.2mm, and the profile wall thickness used for the outer frame is 2mm.

[0026] As a preferred embodiment, in the airtight ventilation fan structure described above, the fan assembly includes a fixing plate, a fan, and a power component. The power component is fixed to the steel plate, and the fan is fixed to the window frame by means of the fixing plate.

[0027] This structural design of the fan assembly fixes the power unit to the steel plate, and the fan is fixed to the window frame with the help of the fixing plate. This makes the installation of the fan assembly more stable, the operation more stable, reduces vibration and noise, improves the ventilation efficiency and service life of the ventilation fan, and also facilitates the installation, disassembly and maintenance of the fan assembly.

[0028] Preferably, in the airtight ventilation fan structure described above, the flexible sealing frame is provided with a surrounding protrusion, the window frame is provided with a T-shaped snap-fit ​​part, the flexible sealing frame is provided with a snap-fit ​​groove, and the snap-fit ​​part cooperates with the snap-fit ​​groove.

[0029] The design of the protrusions on the flexible sealing frame and the T-shaped snap-fit ​​part and snap-fit ​​groove on the window frame makes the connection between the flexible sealing frame and the window frame tighter and more secure, facilitating installation and disassembly. At the same time, the protrusions can further enhance the sealing performance of the flexible sealing frame, improve the overall airtightness of the ventilation fan, and effectively prevent air from leaking from the gap between the sealing frame and the window frame.

[0030] Preferably, the airtight ventilation fan structure described above includes a linkage assembly comprising a drive assembly, two vertical linkage rods, a rack, a primary linkage, two secondary linkages, a blade linkage corresponding to the number of window slats, a horizontal linkage, two linkage fixing components, and two tertiary linkages. The drive assembly is fixed to the inner side of the window frame. The rack is rotatably connected to one end of the primary linkage, and the other end of the primary linkage is fixedly connected to the horizontal linkage. The drive assembly drives the primary linkage to rotate by controlling the rack to move up and down, which in turn drives the horizontal linkage to rotate. One end of each secondary linkage is fixedly connected to the horizontal linkage, and the other end is rotatably connected to the two tertiary linkages. The other ends of the two tertiary linkages are rotatably connected to the two vertical linkage rods. One end of the blade linkage is connected to the vertical linkage rod, and the other end abuts against the inner side of the window slats.

[0031] The complex structural design of this linkage component, through the coordinated action of components such as the drive component, rack and pinion, various linkages, and vertical linkage rods, achieves synchronous control of the window slat assembly, enabling it to reliably and stably perform opening and closing operations. This ensures the ease of operation and stability of the ventilation fan during use. At the same time, this linkage method helps to improve the synchronicity of the opening and closing of the window slats, further optimizing the sealing performance and ventilation effect of the ventilation fan.

[0032] Meanwhile, the setup of primary, secondary, and tertiary linkages increases the foldability of the linkage components, compresses space, and allows for a thinner ventilation fan. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of this utility model;

[0034] Figure 2 This is a cross-sectional view of the present invention;

[0035] Figure 3 for Figure 2 A magnified view of a section at point A in the middle;

[0036] Figure 4 This is an exploded view of the present invention;

[0037] Figure 5 This is a schematic diagram of the structure of the window leaf in this utility model;

[0038] Figure 6 A schematic diagram of the flexible sealing frame in this utility model;

[0039] Figure 7 This is a schematic diagram of the linkage component in the open state of this utility model;

[0040] Figure 8 This is a schematic diagram of the linkage component in the closed state of this utility model;

[0041] Figure 9 This is a schematic diagram of the inner frame structure in this utility model;

[0042] Figure 10 for Figure 9 A magnified view of a section at point B. Detailed Implementation

[0043] The following is in conjunction with the appendix Figure 1-10 The present invention will be further described in detail with reference to specific embodiments, but these are not intended to limit the present invention: Example

[0044] An airtight ventilation fan structure includes a rear cover 1, a bulkhead, a window frame 3, a fan assembly 4, a linkage assembly 5, and a window blade assembly 6. The window frame 3, the window blade assembly 6, and the linkage assembly 5 cooperate to form an open state and a closed state. It also includes a flexible sealing frame 7. The bulkhead is provided with a first ventilation opening 2. The rear cover 1 and the window frame 3 are respectively fixed to both sides of the first ventilation opening 2. The window blade assembly 6 includes at least two window blades 61 and blade sealing strips 62 provided on the window blades 61. The window blades 61 are rotatably connected to the window frame 3. The blade sealing strips 62 are provided at the tail end of the window blades 61 away from the rotatable connection. The flexible sealing frame 7 is fixed to the window frame 3. In the closed state, the tail end of the window blades 61 abuts against the flexible sealing frame 7. The window frame 3, the window blade assembly 6, the rear cover 1, and the bulkhead together form an accommodating space. The fan assembly 4 is placed in the accommodating space. The linkage assembly 5 is fixed to the window frame 3. The linkage assembly 5 is provided with a control lever. The linkage assembly is connected to the window blade assembly 6.

[0045] It also includes a steel plate 8 and a honeycomb panel 9. The steel plate 8 is fixed to the surface of the first ventilation opening 2 on one side of the rear cover 1. The steel plate 8 is provided with a second ventilation opening 81. The honeycomb panel 9 is fixed on the steel plate 8 and covers the second ventilation opening 81.

[0046] It also includes a grid plate 10, which is fixed to the window frame 3. The steel plate 8, honeycomb plate 9, grid plate 10, and window frame 3 form a ventilation space, and the fan assembly 4 is placed in the ventilation space.

[0047] Preferably, the window leaf 61 includes a rotating connection part 611, a blade 612, and a baffle 613. The upper edge of the blade 612 is connected to the rotating connection part 611, and the lower edge of the blade 612 is connected to the baffle 613. When closed, the baffle 613 covers the rotating connection part 611 of the adjacent blade 612.

[0048] Preferably, a blade sealing strip 62 is fixed to the lower edge of the blade 612 and the inner side of the baffle 613. When the blade is closed, the blade sealing strip 62 abuts against the rotating connection part 611 of the adjacent window blade 61.

[0049] Preferably, the flexible sealing frame 7 is provided with a leaf gap protrusion 71, which is disposed between two adjacent window blades 61. When closed, the leaf gap protrusion 71 abuts against the space between the blade sealing strip 62 and the rotating connection part 611 of the two adjacent window blades 61.

[0050] Preferably, the window leaf 61 is provided with a blade groove 614, and the tail end of the baffle 613 is provided with a baffle bend 615, which extends into the blade groove 614 in the closed state.

[0051] Preferably, the window frame 3 includes an outer frame 31 and an inner frame 32. The outer frame 31 is connected to the bulkhead, and the inner frame 32 connects the outer frame 31 and the rotating connection part 611. The inner frame 32 is provided with a shaft hole 321, and the rotating connection part 611 is rotatably connected to the shaft hole 321 by means of a pin. The inner frame 32 is provided with an anti-protrusion groove 322, and the shaft hole 321 is disposed in the anti-protrusion groove 322.

[0052] Preferably, the blade 612 has a thickness W1 of 10 mm, and the outer frame 31 has a thickness W2 of 17 mm.

[0053] Preferably, the fan assembly 4 includes a fixing plate 41, a fan 42, and a power assembly 43. The power assembly is fixed to the steel plate 8, and the fan 42 is fixed to the window frame 3 by means of the fixing plate 41.

[0054] Preferably, the flexible sealing frame 7 is provided with a surrounding protrusion 72, the window frame 3 is provided with a T-shaped snap-fit ​​part 33, the flexible sealing frame 7 is provided with a snap-fit ​​groove 73, and the snap-fit ​​part 33 cooperates with the snap-fit ​​groove 73.

[0055] Preferably, the linkage assembly 5 includes a drive assembly 51, two vertical linkage rods 52, a rack 53, a primary linkage 54, two secondary linkages 55, a blade linkage 56 corresponding to the number of window leaf 61, a horizontal linkage 57, two linkage fixing parts 58, and two tertiary linkages 59. The drive assembly 51 is fixed to the inside of the window frame 3. The rack 53 is rotatably connected to one end of the primary linkage 54, and the other end of the primary linkage 54 is fixedly connected to the horizontal linkage 57. The drive assembly 51 drives the primary linkage 54 to rotate by controlling the rack 53 to move up and down, and finally drives the horizontal linkage 57 to rotate. One end of each secondary linkage 55 is fixedly connected to the horizontal linkage 57, and the other end is rotatably connected to the two tertiary linkages 59 respectively. The other ends of the two tertiary linkages 59 are rotatably connected to the two vertical linkage rods 52 respectively. One end of the blade linkage 56 is connected to the vertical linkage 52, and the other end abuts against the inside of the window leaf 61.

[0056] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall be covered by the present utility model.

Claims

1. An airtight ventilation fan structure, comprising a rear cover (1), a bulkhead, a window frame (3), a fan assembly (4), a linkage assembly (5), and a window slat assembly (6), wherein the window frame (3), the window slat assembly (6), and the linkage assembly (5) cooperate to form an open state and a closed state, characterized in that: It also includes a flexible sealing frame (7), a first ventilation opening (2) is provided on the bulkhead, the rear cover (1) and the window frame (3) are respectively fixed on both sides of the first ventilation opening (2), the window leaf assembly (6) includes at least two window leaves (61) and a blade sealing strip (62) provided on the window leaves (61), the window leaves (61) are rotatably connected to the window frame (3), the blade sealing strip (62) is provided at the tail end of the window leaves (61) away from the rotatable connection, the flexible sealing frame (7) is fixed on the window frame (3), and when closed, the tail end of the window leaves (61) abuts against the flexible sealing frame (7), the window frame (3), the window leaf assembly (6), the rear cover (1) and the bulkhead enclose to form an accommodating space, the fan assembly (4) is placed in the accommodating space, the linkage assembly (5) is fixed on the window frame (3), the linkage assembly (5) is provided with a control lever, and the linkage assembly is connected to the window leaf assembly (6); It also includes a steel plate (8) and a honeycomb panel (9). The steel plate (8) is fixed to the surface of the first vent (2) on one side of the rear cover (1). The steel plate (8) is provided with a second vent (81). The honeycomb panel (9) is fixed on the steel plate (8) and covers the second vent (81). It also includes a grid plate (10), which is fixed to the window frame (3). The steel plate (8), honeycomb plate (9), grid plate (10), and window frame (3) form a ventilation space. The fan assembly (4) is placed in the ventilation space.

2. The airtight ventilation fan structure according to claim 1, characterized in that: The window leaf (61) includes a rotating connection part (611), a blade (612), and a baffle (613). The upper edge of the blade (612) is connected to the rotating connection part (611), and the lower edge of the blade (612) is connected to the baffle (613). When closed, the baffle (613) covers the rotating connection part (611) of the adjacent blade (612).

3. The airtight ventilation fan structure according to claim 2, characterized in that: A blade sealing strip (62) is fixed to the lower edge of the blade (612) and the inner side of the baffle (613). When the blade is closed, the blade sealing strip (62) abuts against the rotating connection part (611) of the adjacent window blade (61).

4. The airtight ventilation fan structure according to claim 3, characterized in that: The flexible sealing frame (7) is provided with a leaf slit protrusion (71), which is located between two adjacent window leaf (61). When closed, the leaf slit protrusion (71) abuts against the space between the blade sealing strip (62) and the rotating connection part (611) of the two adjacent window leaf (61).

5. The airtight ventilation fan structure according to claim 4, characterized in that: The window leaf (61) is provided with a blade groove (614), and the end of the baffle (613) is provided with a baffle bend (615), which extends into the blade groove (614) in the closed state.

6. The airtight ventilation fan structure according to claim 5, characterized in that: The window frame (3) includes an outer frame (31) and an inner frame (32). The outer frame (31) is connected to the bulkhead. The inner frame (32) connects the outer frame (31) and the rotating connection part (611). The inner frame (32) is provided with a shaft hole (321). The rotating connection part (611) is rotatably connected to the shaft hole (321) by means of a pin. The inner frame (32) is provided with an anti-protrusion groove (322). The shaft hole (321) is located in the anti-protrusion groove (322).

7. The airtight ventilation fan structure according to claim 6, characterized in that: The blade (612) has a thickness W1 of 10 mm, and the outer frame (31) has a thickness W2 of 17 mm.

8. The airtight ventilation fan structure according to claim 1, characterized in that: The fan assembly (4) includes a fixing plate (41), a fan (42), and a power assembly (43). The power assembly is fixed on the steel plate (8), and the fan (42) is fixed on the window frame (3) by means of the fixing plate (41).

9. The airtight ventilation fan structure according to claim 1, characterized in that: The flexible sealing frame (7) is provided with a surrounding protrusion (72), the window frame (3) is provided with a snap-fit ​​part (33) with a T-shaped cross section, the flexible sealing frame (7) is provided with a snap-fit ​​groove (73), and the snap-fit ​​part (33) cooperates with the snap-fit ​​groove (73).

10. The airtight ventilation fan structure according to claim 1, characterized in that: The linkage assembly (5) includes a drive assembly (51), two vertical linkage rods (52), a rack (53), a primary linkage (54), two secondary linkages (55), a blade linkage (56) corresponding to the number of window blades (61), a horizontal linkage (57), two linkage fasteners (58), and two tertiary linkages (59). The drive assembly (51) is fixed to the inside of the window frame (3). The rack (53) is rotatably connected to one end of the primary linkage (54), and the other end of the primary linkage (54) is connected to the horizontal linkage (59). 57) Fixed connection, the drive assembly (51) drives the first-level connecting rod (54) to rotate by controlling the rack (53) to move up and down and finally drives the transverse connecting rod (57) to rotate. One end of the second-level connecting rod (55) is fixedly connected to the transverse connecting rod (57) and the other end is rotatably connected to two third-level connecting rods (59). The other end of the two third-level connecting rods (59) is rotatably connected to two vertical linkage rods (52). One end of the blade connecting rod (56) is connected to the vertical linkage rod (52) and the other end abuts against the inner side of the window leaf (61).

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