Fresh air fan device with noise reduction function

Abstract

The utility model discloses a fresh air fan device with a noise reduction function, and relates to the field of fresh air fan devices. The fresh air fan comprises a fresh air fan shell, a partition partition plate and a pipeline connecting base, the partition partition plate is fixed in the fresh air fan shell, and vibration stopping glue is pasted to the interior of the fresh air fan shell and the inner side and the outer side of the partition partition plate. A groove-shaped structure allowing the two sets of filter plates and the set of heat exchange core bodies to be connected in an inserted mode is formed in the partition partition plate, an air conveying pipe is fixed to the end, away from the vertical central axis of the fresh air fan shell, of the pipeline connecting base, the outer side of the air conveying pipe is sleeved with silencing cotton, and a silencing bin is fixed to the interior of the air conveying pipe; according to the fresh air fan device, the all-around noise reduction function can be well achieved for the interior of the fresh air fan device, the air supply pipeline and the air exhaust pipeline, and meanwhile the heat exchange core body and the air inlet and exhaust filter screen can be conveniently and rapidly extracted and replaced.

Description

Technical Field

[0001] This utility model relates to the field of fresh air fan devices, specifically a fresh air fan device with noise reduction function. Background Technology

[0002] A fresh air ventilator is an effective air purification device that circulates indoor air by introducing fresh outdoor air and expelling stale indoor air, thus ensuring indoor air quality. It plays a vital role in improving the health of living and working environments, especially in areas with poor air quality, effectively blocking harmful substances such as smog and bacteria. With people's increasing pursuit of healthy living, fresh air ventilators have become one of the key devices for improving quality of life in modern society.

[0003] However, traditional fresh air ventilation systems generate significant noise during operation, as the supply and exhaust fans can disrupt the user's daily life. The noise can only be stopped by turning off the fresh air ventilation system, thus defeating the purpose of installing a fresh air ventilation system. Utility Model Content

[0004] Based on this, the purpose of this utility model is to provide a fresh air fan device with noise reduction function, which can effectively reduce noise and silence the inside of the fresh air fan device, as well as the air supply and exhaust ducts, thereby greatly reducing the noise emitted by the fresh air fan. At the same time, it can also facilitate the quick extraction and replacement of the heat exchange core and the air intake and exhaust filters, saving time and costs during installation and subsequent maintenance and replacement, and improving convenience.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a fresh air fan device with noise reduction function, comprising a fresh air fan shell, a partition plate, and a pipe connection seat. The partition plate is fixed inside the fresh air fan shell, and vibration damping adhesive is pasted on the inside of the fresh air fan shell and on both the inner and outer sides of the partition plate. The partition plate has a groove-shaped structure inside for inserting two sets of filter plates and one set of heat exchange cores, and is respectively inserted into the two sets of filter plates and one set of heat exchange cores. An air supply pipe is fixed at one end of the pipe connection seat away from the vertical central axis of the fresh air fan shell, and sound-absorbing cotton is sleeved on the outside of the air supply pipe, and a sound-absorbing chamber is fixed inside the air supply pipe.

[0006] By adopting the above technical solution, the partition plate is used to divide the internal space of the fresh air fan casing, the vibration damping adhesive is used to attach vibration damping material to the inside of the fresh air fan casing and both sides of the partition plate, the two sets of filter plates are used to filter the air passing through the exhaust duct and the air inlet duct outlet, the heat exchange core provides heat exchange function for the incoming and outgoing air through the internal exhaust duct and air inlet duct, the pipe connector is used to provide stable installation function for the air supply pipe, the air supply pipe is used to exhaust the stale air in the room and transport the fresh air from the outside, the sound-absorbing cotton is used to wrap the outside of the air supply pipe to absorb sound and reduce noise, and the sound-absorbing chamber is used to absorb sound and reduce noise of the air flowing inside the air supply pipe.

[0007] Furthermore, a fan connecting seat is fixed to the bottom of the fresh air fan housing, and a fan protective cover is fastened to the top of the fresh air fan housing by bolts.

[0008] By adopting the above technical solution, the fan connection seat fixed at the bottom of the fresh air fan casing provides a stable support for the entire fan unit. The fan protective cover on the top of the fresh air fan casing, which is fastened with bolts, not only provides additional protection for the internal components of the fan, but also prevents dust, debris and other contaminants from entering the fan and affecting its normal operation and lifespan.

[0009] Furthermore, the inside of the fan protective cover has a groove-shaped structure that corresponds to the inside of the partition plate, and a quick-release cover is engaged in the groove-shaped structure inside the fan protective cover and is fastened together by bolts.

[0010] By adopting the above technical solution, the groove-shaped structure inside the fan protective cover, which corresponds to the upper and lower parts inside the partition plate, provides a precise installation position for the quick-release cover, ensuring that the quick-release cover can be securely locked inside the fan protective cover, and providing a convenient way to disassemble and assemble the heat exchange core and filter plate.

[0011] Furthermore, the heat exchange core has two sets of channels, an exhaust channel and an inlet channel, which are arranged in an alternating manner. A lifting handle is provided on the inner side of the top of the heat exchange core.

[0012] By adopting the above technical solution, the exhaust duct and the air inlet duct can provide independent air delivery channels for stale air and fresh air gaps, thereby preventing the mixing of new and old air while also performing a more energy-efficient heat exchange function. The lifting handle opened on the top inner side of the heat exchange core provides users with a convenient operating point.

[0013] Furthermore, each of the two sets of filter plates has two sets of lifting blocks on its top, and the two sets of filter plates are respectively fitted to the exhaust end of the exhaust duct and the exhaust end of the air inlet duct.

[0014] By adopting the above technical solution, two sets of lifting blocks are opened on the top of both sets of filter plates. This design provides users with convenient operation points. The filter plates are respectively set to fit the exhaust end of the exhaust duct and the exhaust duct. This layout can ensure that the air after heat exchange must be filtered again by the filter plates before being discharged.

[0015] Furthermore, a supply fan is installed on one side of the interior of the fresh air fan housing, and an exhaust fan is installed at another location inside the fresh air fan housing. The input ends of both the supply fan and the exhaust fan are connected to pipe connectors.

[0016] By adopting the above technical solution, the supply fan is used to transport the external air gap to the inside of the fresh air fan casing and then to the room through the air inlet duct. The exhaust fan is used to transport the stale air from the room to the inside of the fresh air fan casing and then to the outside through the exhaust duct.

[0017] Furthermore, four sets of pipe connection seats are fixed on the outer side of the fresh air fan housing, and the four sets of pipe connection seats are arranged in pairs and symmetrically based on the vertical central axis of the fresh air fan housing.

[0018] By adopting the above technical solution, the four sets of pipe connection seats fixed on the outside of the fresh air fan casing are used to deliver fresh air and exhaust stale air respectively. They are staggered and each pair forms a group.

[0019] In summary, the present invention has the following main advantages:

[0020] 1. This utility model incorporates vibration damping adhesive, sound-absorbing cotton, and a sound-absorbing chamber. Vibration damping adhesive is applied to the inside of the fresh air fan casing and the inner and outer sides of the partition plate, providing excellent vibration damping. Simultaneously, the sound-absorbing cotton is fitted onto the outside of the air duct, reducing the noise emitted from inside the air duct when airflow passes through it. Furthermore, the sound-absorbing chamber inside the air duct further reduces the noise generated by airflow passing through it, thus providing comprehensive noise reduction for the entire device.

[0021] 2. In this utility model, the fan protective cover and the partition plate have a groove-shaped structure inside for inserting the heat exchange core and two sets of filter plates. When it is necessary to replace the heat exchange core and the two sets of filter plates, the quick-release cover can be engaged with the threaded fastening of the fan protective cover, so that the heat exchange core and the two sets of filter plates can be replaced without removing the fan protective cover. The top inner side of the heat exchange core has a handle for the operator to lift, and the top of the two sets of filter plates has a block-shaped structure for the operator to pinch, which can better facilitate the operator to remove and replace the heat exchange core and the two sets of filter plates. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall structure of the quick-release cover of this utility model in the disassembled state;

[0024] Figure 3 This is a schematic diagram of the overall structure of the heat exchange core and filter plate of this utility model in a disassembled state.

[0025] Figure 4 This is a schematic diagram of the overall structure connecting the outer shell of the fresh air fan and the partition plate of this utility model;

[0026] Figure 5 This is a schematic diagram of the cross-sectional structure of the connection between the air duct and the sound-absorbing cotton of this utility model.

[0027] In the diagram: 1. Fresh air fan housing; 2. Fan connector; 3. Fan protective cover; 4. Quick-release cover; 5. Partition plate; 6. Vibration damping adhesive; 7. Heat exchange core; 71. Exhaust duct; 72. Inlet duct; 8. Filter plate; 9. Supply fan; 10. Exhaust fan; 11. Pipe connector; 12. Air duct; 13. Sound-absorbing cotton; 14. Sound-absorbing chamber; 15. Filter screen. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0029] In the description of this utility model, 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 only for the convenience of describing this utility model and 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 this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", "linking", and "setting" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] The embodiments of this utility model will be described below based on its overall structure.

[0032] In this embodiment:

[0033] A fresh air fan device with noise reduction function, such as Figures 1-5 As shown, the device includes a fresh air fan housing 1, a partition plate 5, and a pipe connector 11. The partition plate 5 is fixed inside the fresh air fan housing 1, and the inside of the fresh air fan housing 1 and the inner and outer sides of the partition plate 5 are covered with vibration damping adhesive 6. The partition plate 5 has a groove-shaped structure inside for inserting two sets of filter plates 8 and one set of heat exchange cores 7, and is inserted into the two sets of filter plates 8 and one set of heat exchange cores 7 respectively. The pipe connector 11 is fixed with an air supply pipe 12 at one end away from the vertical central axis of the fresh air fan housing 1, and the outside of the air supply pipe 12 is fitted with sound-absorbing cotton 13, and the inside of the air supply pipe 12 is fixed with a sound-absorbing chamber 14.

[0034] The air ventilator casing 1 and the inner and outer sides of the partition plate 5 fixed inside it are covered with vibration damping adhesive 6, which can effectively isolate and reduce the vibration and noise generated during the operation of the ventilator. The damping characteristics of the vibration damping adhesive 6 can absorb some vibration energy, thereby reducing the transmission of noise and providing users with a quieter and more comfortable environment. The groove structure opened inside the partition plate 5 facilitates the insertion of two sets of filter plates 8 and a set of heat exchange cores 7. This modular design not only simplifies the installation and replacement process, but also ensures the high efficiency and stability of air treatment. The air duct 12 fixed at one end of the duct connector 11, the sound-absorbing cotton 13 on its outer side and the sound-absorbing chamber 14 fixed inside constitute a multi-layer noise reduction system, which further reduces the noise generated during air flow, making the air entering the room both fresh and quiet, significantly improving the quality and comfort of the living environment.

[0035] See Figure 1 , Figure 2 , Figure 3 and Figure 4 The bottom of the fresh air fan housing 1 is fixed with a fan connecting seat 2, and the top of the fresh air fan housing 1 is fixed with a fan protective cover 3 by bolts.

[0036] The fan connecting seat 2, which is fixed at the bottom of the fresh air fan housing 1, ensures that the fan can remain stable during operation and will not shift or tip over due to vibration or external force, thereby enhancing the safety and reliability of the equipment. The fan protective cover 3, which is fastened to the top of the fresh air fan housing 1 by bolts, makes the disassembly and assembly of the fan protective cover 3 simple and quick, facilitating subsequent maintenance and repair of the fan.

[0037] See Figure 2 , Figure 3 and Figure 4 The inside of the fan protective cover 3 has a groove structure that corresponds to the inside of the partition plate 5. The groove structure inside the fan protective cover 3 is fitted with a quick-release cover 4 and is fastened by bolts.

[0038] The groove-shaped structure inside the fan protective cover 3, which corresponds to the upper and lower grooves inside the partition plate 5, provides a precise installation position for the quick-release cover 4, improves the overall structural strength of the equipment, and effectively prevents external dust and debris from entering the fan, protecting the cleanliness and normal operation of the fan components. When it is necessary to maintain or replace the heat exchange core 7 and filter plate 8, the user only needs to loosen the bolts to easily remove the quick-release cover 4 and then carry out the work on the heat exchange core 7 and filter plate 8.

[0039] See Figure 2 and Figure 3 The heat exchange core 7 has two sets of channels, namely an exhaust duct 71 and an air inlet duct 72, which are arranged in an alternating manner. A lifting handle is provided on the inner side of the top of the heat exchange core 7.

[0040] The heat exchange core 7 has two sets of channels, an exhaust duct 71 and an intake duct 72, which are staggered. This design ensures that fresh air and stale air can fully exchange heat inside the heat exchange core 7 without mixing, thereby improving the efficiency of heat exchange and ensuring stable and comfortable indoor temperature. The pull handle on the top inner side of the heat exchange core 7 allows users to easily pull it out of the groove structure of the partition plate 5 when replacing or cleaning the heat exchange core 7, greatly reducing the difficulty and complexity of operation and improving the user experience.

[0041] See Figure 2 , Figure 3 and Figure 4 Two sets of lifting blocks are provided on the top of each of the two sets of filter plates 8, and the two sets of filter plates 8 are respectively fitted to the exhaust end of the exhaust duct 71 and the exhaust end of the inlet duct 72.

[0042] Each of the two sets of filter plates 8 has two sets of lifting blocks on its top, allowing users to easily pull the filter plates 8 out of the groove structure of the partition plate 5 when replacing or cleaning them. This greatly improves the convenience of operation and reduces the difficulty of maintenance. The two sets of filter plates 8 are respectively fitted to the exhaust end of the exhaust duct 71 and the air inlet duct 72, effectively removing dust, bacteria and other harmful substances from the air, ensuring the air quality entering the room or exiting the room, and providing residents with a healthier and fresher living environment.

[0043] See Figure 4 A supply fan 9 is installed on one side inside the fresh air fan housing 1, and an exhaust fan 10 is installed at another location inside the fresh air fan housing 1. Both the supply fan 9 and the exhaust fan 10 are connected to a pipe connector 11 at their input ends.

[0044] The fresh air fan 9 installed inside the outer casing 1 can efficiently draw in fresh air from the outside and deliver it into the room through the air supply pipe 12 connected by the pipe connector 11. The exhaust fan 10 installed at another location inside the fresh air fan casing 1 is responsible for exhausting stale or polluted air from the room to the outside through the air supply pipe 12 connected by another set of pipe connectors 11.

[0045] See Figure 1 , Figure 2 , Figure 3 and Figure 4 Four sets of pipe connection seats 11 are fixed on the outer side of the fresh air fan housing 1, and the four sets of pipe connection seats 11 are arranged in pairs and symmetrically based on the vertical central axis of the fresh air fan housing 1.

[0046] Among them, the four sets of pipe connection seats 11 are arranged in pairs and symmetrically based on the vertical central axis of the fresh air fan casing 1. This layout not only makes the equipment more beautiful and harmonious in appearance, but also ensures that the distribution of air supply and exhaust pipes is more balanced and reasonable, avoiding problems such as uneven air supply or poor air exhaust caused by improper pipe layout.

[0047] The implementation principle of this utility model is as follows: First, the fresh air fan housing 1 is fixed in a suitable position through the fan connecting seat 2, and the heat exchange core 7 and two sets of filter plates 8 are respectively inserted into the groove structure opened inside the partition plate 5. Then, the fan protective cover 3 is fastened to the fresh air fan housing 1 with existing bolts. Then, the quick-release cover 4 is inserted into the reserved slot inside the fan protective cover 3, and the quick-release cover 4 is connected to the fan protective cover 3 with existing bolts.

[0048] Then, the supply fan 9 and exhaust fan 10 inside the fresh air fan housing 1 are turned on through the control center. The supply fan 9 draws in fresh air from the outside through the air duct 12 connected to the pipe connector 11 at its input end. The fresh air undergoes a first filtration through the filter screen 15 inside the air duct 12. Subsequently, the filtered fresh air undergoes noise reduction treatment through the soundproof chamber 14 inside the air duct 12. At the same time, the soundproof cotton 13 on the outside of the air duct 12 provides a second filtration treatment for the air duct 12. The fresh air is then discharged into the internal space of the fresh air fan housing 1 through the supply fan 9. After one filtration, the fresh air enters the interior of the heat exchange core 7 through the air inlet duct 72.

[0049] Meanwhile, the exhaust fan 10 will absorb the stale air in the room through the air duct 12 connected to the pipe connector 11 at its input end, and filter the stale air through the filter screen 15 inside the air duct 12 for the first time. Then, the filtered stale air will be silenced by the soundproof chamber 14 inside the air duct 12. At the same time, the soundproof cotton 13 on the outside of the air duct 12 will provide a second time of soundproofing. After being discharged into the space inside the fresh air fan housing 1 by the exhaust fan 10, the stale air that has passed through the first filtration will enter the interior of the heat exchange core 7 through the exhaust duct 71. The exhaust duct 71 and the air inlet duct 72 inside the heat exchange core 7 are in a dual-channel mode, which allows the fresh air between the exhaust duct 71 and the air inlet duct 72 to exchange heat with the stale air.

[0050] Fresh air is then discharged through exhaust duct 71 and undergoes a second filtration through filter plate 8 at the other end of exhaust duct 71. It is then discharged into the room through air duct 12 located at the top of the side of the fresh air fan housing 1 near the exhaust fan 10. During the discharge process, the air also undergoes a third filtration process, including sound absorption treatment by the sound absorption chamber 14 inside the air duct 12, sound absorption treatment by the sound absorption cotton 13 on the outside of the air duct 12, and a third filtration process by the filter screen 15 inside the air duct 12.

[0051] At the same time, the stale air introduced into the heat exchange core 7 by the exhaust fan 10 will be discharged from the heat exchange core 7 through the air inlet duct 72 and then filtered for a second time by a set of filter plates 8 at the outlet of the air inlet duct 72. After that, it will be discharged to the outside through the air duct 12 on the top side of the fresh air fan housing 1 near the supply air fan 9. When it is discharged, it will also be filtered by the soundproof chamber 14 inside the air duct 12, the soundproof cotton 13 on the outside of the air duct 12, and the filter screen 15 inside the air duct 12 for a third time, to ensure that the air discharged to the outside is environmentally friendly.

[0052] Finally, when it is necessary to replace the heat exchange core 7 and the two sets of filter plates 8 inside the fresh air fan housing 1 after a period of use, the bolts fixing the fan protective cover 3 and quick-release cover 4 are removed using existing tools such as wrenches. The quick-release cover 4 is then removed from the inside of the fan protective cover 3. The heat exchange core 7 and the two sets of filter plates 8 are then removed and replaced using the handle on the inner side of the top of the heat exchange core 7 and the lifting block on the top of the filter plate 8.

[0053] All parts not covered in this utility model are the same as or can be implemented using existing technologies, and will not be described in detail here.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A fresh air fan device with noise reduction function, characterized in that: Includes the fresh air fan housing (1), partition plate (5), and duct connection seat (11); The interior of the fresh air fan housing (1) is fixed with a partition plate (5), and the interior of the fresh air fan housing (1) and the inner and outer sides of the partition plate (5) are covered with vibration damping adhesive (6). The interior of the partition plate (5) is provided with a groove structure for inserting two sets of filter plates (8) and a set of heat exchange cores (7), and is respectively inserted into the two sets of filter plates (8) and the set of heat exchange cores (7). The end of the pipe connector (11) away from the vertical central axis of the fresh air fan housing (1) is fixed with an air supply pipe (12), and the outer side of the air supply pipe (12) is fitted with sound-absorbing cotton (13), and the interior of the air supply pipe (12) is fixed with a sound-absorbing chamber (14).

2. The fresh air fan device with noise reduction function according to claim 1, characterized in that: The bottom of the fresh air fan housing (1) is fixed with a fan connecting seat (2), and the top of the fresh air fan housing (1) is fixed with a fan protective cover (3) by bolts.

3. The fresh air fan device with noise reduction function according to claim 2, characterized in that: The inside of the fan protective cover (3) is provided with a groove structure that corresponds to the inside of the partition plate (5) and a quick-release cover (4) is engaged in the groove structure inside the fan protective cover (3) and is fastened by bolts.

4. The fresh air fan device with noise reduction function according to claim 1, characterized in that: The heat exchange core (7) has two sets of channels, namely an exhaust duct (71) and an air inlet duct (72), which are arranged in an alternating manner. A lifting handle is provided on the inner side of the top of the heat exchange core (7).

5. The fresh air fan device with noise reduction function according to claim 1, characterized in that: Two sets of lifting blocks are provided on the top of both sets of filter plates (8), and the two sets of filter plates (8) are respectively attached to the exhaust end of the exhaust duct (71) and the air inlet duct (72).

6. The fresh air fan device with noise reduction function according to claim 1, characterized in that: A supply fan (9) is installed on one side of the inside of the fresh air fan housing (1), and an exhaust fan (10) is installed at another location inside the fresh air fan housing (1). The input ends of both the supply fan (9) and the exhaust fan (10) are connected to pipe connectors (11).

7. The fresh air fan device with noise reduction function according to claim 1, characterized in that: Four sets of pipe connectors (11) are fixed on the outer side of the fresh air fan housing (1), and the four sets of pipe connectors (11) are arranged in pairs and symmetrically based on the vertical central axis of the fresh air fan housing (1).

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