Fan fixing assembly for a ceiling-mounted fresh air system

Abstract

The utility model relates to fan field especially for new trend system fan fixing subassembly for ceiling type. The new fan and exhaust fan are all modular components, the modular components contain fan plastic shell spare (3), are arranged fan motor composition (2) in fan plastic shell spare (3), still contain fan installation fixed sheet metal plate (1), fan installation fixed sheet metal plate (1) will fan motor composition (2) be fixed in fan plastic shell spare (3);Screw hole can directly be arranged on the fan installation fixed sheet metal plate (1) fan plastic flow guide ring (6);Screw hole can be arranged on the fan installation fixed sheet metal plate (1) directly install the sheet metal part of casing.

Description

Technical Field

[0001] This utility model relates to the field of fans, and in particular to a fan fixing component for a ceiling-mounted fresh air system. Background Technology

[0002] With the continuous improvement of living standards, modern people have increasingly stringent requirements for indoor air quality, which has led to the gradual popularization of fresh air systems in various types of buildings. In common ceiling-mounted fresh air systems, centrifugal fans are widely used as their core power components. However, in traditional designs, the air guide ring and the fan body are two independent, separate parts, installed separately in the internal cavity of the ceiling-mounted fresh air system.

[0003] The existing technology has the following main drawbacks: 1. High installation precision requirements and low efficiency: In the actual assembly process of traditional ceiling-mounted fresh air systems, since the air guide ring and the fan are two separate independent parts, operators need to spend a lot of effort to precisely adjust their relative positions during installation. This not only makes the installation process complex and time-consuming, resulting in low work efficiency, but more importantly, it is difficult to ensure the precise concentricity between the air guide ring and the fan impeller, as well as the optimal axial installation distance. Such precision deviations during installation will directly lead to additional aerodynamic noise during fan operation, while also causing significant air pressure loss, ultimately resulting in increased overall system noise and a decrease in effective air delivery volume.

[0004] 2. Air vent interfaces are prone to detachment: Traditional ceiling-mounted fresh air systems typically have smooth end faces at the air vent interfaces used to connect supply / exhaust ducts, lacking effective anti-detachment structures. This design, relying solely on friction or tape for fixation after duct installation, makes the ducts highly susceptible to loosening or even complete detachment under system vibration or external forces, leading to air leakage, affecting system performance, and even causing secondary pollution.

[0005] 3. Complex structure and compromised aerodynamic performance: The split installation method causes the inlet flow field of the fan to be disturbed by the installation deviation of the guide ring, which disrupts the uniformity and stability of the airflow before it enters the impeller. This non-uniform inflow state degrades the aerodynamic performance of the fan, not only reducing efficiency but also being the source of additional noise and aerodynamic losses.

[0006] In summary, the installation accuracy challenges and anti-detachment defects of the air outlet interface caused by the traditional split-type air guide ring design are key issues that urgently need to be addressed in terms of performance and reliability of current ceiling-mounted fresh air systems.

[0007] On October 24, 2025, a search was conducted in the China Patent Publication Database using "fresh air and fan and fixed and guide ring" as the abstract keywords and the option to allow synonym expansion was selected. No relevant literature was found.

[0008] On October 24, 2025, an abstract search was conducted on CNKI (China National Knowledge Infrastructure) using the keywords "fresh air and fan and fixed and guide ring", but no relevant literature was found. Utility Model Content

[0009] The purpose of this utility model is to provide a better mounting component for a ceiling-mounted fresh air system fan. The specific purpose is explained in the details of the implementation section.

[0010] To achieve the above objectives, the present invention adopts the following technical solution: For ceiling-mounted fresh air system fan fixing components, the fresh air system includes a housing, inside which a fresh air fan and an exhaust fan are arranged. The fresh air fan and exhaust fan are respectively arranged in the fresh air duct and the exhaust air duct. Multiple air outlets 5 are arranged on the body for return air, air intake and exhaust air. Multiple sets of plates in the body divide the whole body into air intake area and air exhaust area. The feature is that both the fresh air fan and the exhaust fan are modular components. The modular component includes a fan plastic shell 3, in which a fan motor assembly 2 is arranged, and also includes a fan mounting and fixing sheet metal plate 1, which fixes the fan motor assembly 2 in the fan plastic shell 3. The fan mounting plate 1 has screw holes that allow the fan's plastic guide ring 6 to be directly mounted. The fan mounting plate 1 has screw holes and can be directly mounted on the sheet metal parts of the housing.

[0011] A further technical solution of this utility model is that a protrusion 7 is arranged on the docking cylinder of the air outlet 5, and the protrusion 7 can be snapped onto the inner wall of the corresponding air duct.

[0012] A further technical solution of this utility model is that the corresponding air duct is a corrugated pipe.

[0013] A further technical solution of this utility model is that the housing of the ceiling-mounted fresh air system fan is embedded in the ceiling, the duct runs in the ceiling, and the air duct leads to the downward opening of the ceiling.

[0014] A further technical solution of this utility model is that the sheet metal part of the housing has mounting screw holes corresponding to the sheet metal plate 1 for mounting and fixing the fan.

[0015] A further technical solution of this utility model is that the protrusions 7 of the docking cylinder of the air outlet 5 include multiple protrusions and are evenly distributed around the docking cylinder.

[0016] The present invention, employing the above technical solution, has the following advantages over the prior art: This patent uses a fan mounting and fixing sheet metal plate, a fan motor, a fan plastic shell, and a fan plastic guide ring. It adopts a pre-installation and then insertion into the ceiling-mounted fresh air system. The fan plastic guide ring and fan plastic shell are molded using plastic molds, resulting in higher installation efficiency and ensuring installation accuracy, thus guaranteeing fan performance. Compared to the shortcomings of the prior art, such as "high installation accuracy requirements and low efficiency," this patent offers high installation accuracy and efficiency. Compared to the shortcomings of the prior art, such as "the air outlet interface is prone to detachment," the air outlet of this patent is less prone to detachment. Attached Figure Description

[0017] To further illustrate this utility model, the following description is provided in conjunction with the accompanying drawings: Figure 1 This is a pre-assembled structural diagram of the utility model; Figure 2 This is a quick-assembly part for the fan outlet of a utility model; Figure 3 A perspective view of the utility model; The components include: 1. Sheet metal plate for fan mounting; 2. Fan motor assembly; 3. Fan plastic housing; 4. Ceiling-mounted fresh air system assembly; 5. Air outlet; 6. Fan plastic air guide ring; 7. Protrusion. Detailed Implementation

[0018] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "top," and "bottom," 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 the present invention 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 the present invention. In addition, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the present invention can be understood according to the specific circumstances.

[0019] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0020] This patent provides multiple parallel solutions; the different descriptions represent improved or parallel solutions based on a basic solution. Each solution has its own unique characteristics. Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other. Fixing methods not described herein can be any type of fixing, such as threaded fixing, bolt fixing, or adhesive bonding.

[0021] Example 1: Referring to all the attached drawings; A fan fixing assembly for a ceiling-mounted fresh air system, the fresh air system includes a housing, inside which a fresh air fan and an exhaust fan are arranged, the fresh air fan and the exhaust fan are respectively arranged in the fresh air duct and the exhaust air duct, and multiple air outlets 5 are arranged on the body for return air, air intake and exhaust air, and multiple sets of plates in the body divide the whole body into air intake area and air exhaust area; The feature is that both the fresh air fan and the exhaust fan are modular components. The modular component includes a fan plastic shell 3, in which a fan motor assembly 2 is arranged, and also includes a fan mounting and fixing sheet metal plate 1, which fixes the fan motor assembly 2 in the fan plastic shell 3. The fan mounting plate 1 has screw holes that allow the fan's plastic guide ring 6 to be directly mounted. The fan mounting sheet metal plate 1 has screw holes for direct mounting on the sheet metal parts of the housing. The substantial technical effects and implementation process, i.e., basic functions and non-obvious aspects, are as follows: This patent uses a fan mounting sheet metal plate, a fan motor, a fan plastic housing, and a fan plastic air guide ring. It adopts a pre-installation and then insertion into the ceiling-mounted fresh air system. The fan plastic air guide ring and fan plastic housing are molded using plastic molds, resulting in higher installation efficiency and ensuring installation accuracy, thus guaranteeing fan performance. Compared to the shortcomings of existing technologies, such as "high installation accuracy requirements and low efficiency," this patent offers high installation accuracy and efficiency. Compared to the shortcomings of existing technologies, such as "easy detachment of the air outlet interface," the air outlet of this patent is less prone to detachment.

[0022] Example 2: As a further improvement, parallel, or optional independent solution, the connecting cylinder of the air outlet 5 is provided with a protrusion 7, which can be snapped onto the inner wall of the corresponding air duct. The substantial technical effect and its implementation process, i.e., the basic function and non-obviousness, are as follows: Compared with the defects of the prior art, such as "complex structure and impaired aerodynamic performance", this patent has a simple structure and is firmly fixed. It can be directly snapped on.

[0023] Example 3: As a further improvement, parallel, or optional independent solution, the corresponding duct is a corrugated pipe. The substantial technical effect and its implementation process, i.e., the basic function and non-obvious aspects, are as follows: the protrusions are inserted into the inner wall of the corrugated pipe, directly achieving fixation and positioning.

[0024] Example 4: As a further improvement, parallel, or optional independent solution, the housing of the ceiling-mounted fresh air system fan is embedded in the ceiling, with ductwork running within the ceiling and the duct leading to a downward-facing opening in the ceiling. The substantial technical effects and implementation process, i.e., the basic functions and non-obvious aspects, are as follows: This example indicates the installation location; however, it should be noted that various fresh air fans are currently available on the market, and similar implementations can all utilize this patent.

[0025] Example 5: As a further improvement, parallel, or optional independent solution, the sheet metal parts of the housing have mounting screw holes corresponding to the fan mounting and fixing sheet metal plate 1. The substantial technical effect and its implementation process, i.e., the basic function and non-obviousness, are as follows: Therefore, the overall installation structure is more stable, and the fan will not vibrate or move.

[0026] Example 6: As a further improvement, parallel, or optional independent solution, the protrusions 7 of the connecting cylinder of the air outlet 5 include multiple protrusions and are evenly distributed around the connecting cylinder. The substantial technical effects and implementation process, i.e., basic functions and non-obvious aspects, are as follows: the even distribution improves the fixing and centering effects. The protrusions around the air outlet effectively prevent PE threaded ducts from falling off when installing them; that is, the types of pipes that can be installed are not limited to corrugated pipes.

[0027] Innovatively, each of the above effects exists independently, yet a single structure can be used to combine the results.

[0028] It should be noted that the multiple modules in this patent are an integration of existing technology modules and do not involve any new modules. Even if some modules use programs, those programs are undoubtedly known programs.

[0029] Innovatively, each of the above effects exists independently, yet a single structure can be used to combine the results.

[0030] It should be noted that the multiple solutions provided in this patent include their own basic solutions, which are independent of each other and do not restrict each other. However, they can also be combined with each other without conflict to achieve multiple effects.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims.

Claims

1. A fan fixing component for a ceiling-mounted fresh air system, the fresh air system includes a housing, inside which a fresh air fan and an exhaust fan are arranged, the fresh air fan and the exhaust fan are respectively arranged in the fresh air duct and the exhaust air duct, and multiple air outlets (5) are arranged on the body for return air, air intake and exhaust air, and multiple sets of plates in the body divide the whole body into an air intake area and an air exhaust area; Its features are: The new air fan and exhaust fan are both modular components. The modular components include a fan plastic shell (3), in which a fan motor assembly (2) is arranged, and also include a fan mounting and fixing sheet metal plate (1). The fan mounting and fixing sheet metal plate (1) fixes the fan motor assembly (2) in the fan plastic shell (3). The fan mounting plate (1) has screw holes that allow the fan plastic guide ring (6) to be directly mounted. The fan mounting plate (1) has screw holes that allow it to be directly mounted on the sheet metal parts of the housing.

2. The fan mounting assembly for a ceiling-mounted fresh air system as described in claim 1, characterized in that: The connecting cylinder of the air outlet (5) is provided with a protrusion (7), which can be snapped onto the inner wall of the corresponding air duct.

3. The fan fixing assembly for a ceiling-mounted fresh air system as described in claim 1, characterized in that: The corresponding duct is a corrugated pipe.

4. The fan mounting assembly for a ceiling-mounted fresh air system as described in claim 1, characterized in that: The casing of the ceiling-mounted fresh air system fan is embedded in the ceiling, the duct runs through the ceiling, and the duct leads to the downward opening of the ceiling.

5. The fan fixing assembly for a ceiling-mounted fresh air system as described in claim 1, characterized in that: The sheet metal parts of the housing have mounting screw holes corresponding to the sheet metal plate (1) for mounting and fixing the fan.

6. The fan mounting assembly for a ceiling-mounted fresh air system as described in claim 2, characterized in that: The protrusions (7) of the connecting cylinder of the air vent (5) include multiple protrusions and are evenly distributed around the connecting cylinder.

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