Fan module and parallel air supply mechanism

Abstract

The utility model relates to a fan module and a parallel air supply mechanism. The utility model relates to a fan module, which comprises a shell, a fan cavity and an air duct cavity, the shell is provided with the fan cavity and the air duct cavity along the airflow direction, and the fan cavity is provided with an air inlet; one end of the air duct chamber is communicated and connected with the fan chamber, the other end of the air duct chamber is provided with an air outlet, and the air outlet horizontally discharges air or obliquely discharges air upwards relative to the horizontal plane; a certain angle is formed between the air inlet airflow direction of the air inlet and the air outlet airflow direction of the air outlet; and the fan is fixedly arranged in the shell, and the air inlet end of the fan faces the air inlet. According to the fan module disclosed by the utility model, eddy current pressure drop loss which is easy to occur when a plurality of fan modules are used in parallel can be effectively avoided; and meanwhile, modular design is adopted, the multiple fan modules can be connected in parallel to form a parallel air supply mechanism according to the actual air volume requirement, and noise reduction is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to a fan module and a parallel air supply mechanism. Background Art

[0002] At present, in the field of Wuheng Comfort Home, more and more people choose to use full air treatment systems, using large-volume air handling units to perform centralized cooling and heating, reheating, sterilization, filtration and other functions on indoor return air and outdoor fresh air to achieve better comfort and health experience.

[0003] In the prior art, in order to facilitate the installation of the air handling system, the floor air supply mode is usually used, which does not require drilling holes in the beams and is safer to install. The current large-volume floor air supply air handling system must balance the air volume and noise under limited conditions. In order to ensure the minimum air supply volume, most air handling systems on the market often have a faster fan speed and louder noise in the air supply mechanism. Moreover, the air supply mechanism of the current air handling system often needs to be customized, otherwise it is easy to have problems with the mismatch between the air volume and the space, such as insufficient air volume in a larger room, or waste of energy in a smaller room, and the versatility is poor. Utility Model Content

[0004] Based on this, the purpose of the utility model is to provide a fan module with a modular design, which guides the airflow through the air duct chamber to prevent air flow from flowing across the air, effectively reduce wind resistance, and improve fan efficiency; and it is convenient to assemble multiple modules into a parallel air supply mechanism to achieve significant noise reduction.

[0005] A fan module, comprising:

[0006] The housing is provided with a fan chamber and an air duct chamber along the air flow direction, the fan chamber is provided with an air inlet; one end of the air duct chamber is conductively connected to the fan chamber, and the other end is provided with an air outlet; the air inlet air flow direction of the air inlet is at a certain angle to the air outlet air flow direction of the air outlet; the air duct chamber includes two opposite and parallel side walls, and the air duct chamber gradually converges along the air flow direction;

[0007] The fan is fixedly arranged inside the fan chamber, and its air inlet end is arranged toward the air inlet.

[0008] Furthermore, the air inlet is opened at the top of the fan chamber, and the air inlet end of the fan is clamped at the air inlet; the air inlet airflow direction of the air inlet is perpendicular to the air outlet airflow direction of the air outlet.

[0009] Furthermore, the fan is a backward centrifugal fan.

[0010] Furthermore, the cross-sectional shape of the fan chamber is square; a plurality of arc-shaped guide plates are arranged in the fan chamber, and two ends of the guide plates are respectively tangentially connected to two adjacent side walls of the fan chamber.

[0011] Furthermore, taking the plane parallel to the air inlet as the cross section, the cross-sectional diameter of the guide plate is 0.1-0.4 times the diameter of the fan impeller.

[0012] Furthermore, the air duct chamber is provided with a first guide wall, the first guide wall is a curved surface, and its convex direction is toward the outside of the air duct chamber; one end of the first guide wall is connected to the side wall of the fan chamber, and the other end thereof extends to the air outlet.

[0013] Furthermore, the diameter of the first guide wall is greater than or equal to 1.2 times the diameter of the fan impeller.

[0014] Furthermore, the air duct chamber is further provided with a second flow guide wall, and the second flow guide wall is arranged facing the first flow guide wall;

[0015] One end of the second guide wall is connected to the side wall of the fan chamber, and the other end extends to the air outlet;

[0016] The second guide wall is a curved surface, and its convex direction is toward the interior of the air duct chamber; or, the second guide wall is a flat surface.

[0017] Furthermore, the first guide wall and the second guide wall gradually converge along the airflow direction.

[0018] A parallel air supply mechanism comprises: at least two groups of fan modules described in the utility model are arranged in parallel.

[0019] The beneficial effects of the utility model are:

[0020] (1) By designing the airflow diversion, the wind resistance can be effectively reduced and the fan efficiency can be improved;

[0021] (2) The modular design allows multiple fan modules to be connected in parallel to form a parallel air supply mechanism according to the actual air volume requirements, and is applied to ground-supply air treatment systems with different air volume requirements;

[0022] (3) By designing independent air chambers and flow channels for individual fans, the eddy current pressure drop loss caused by excessive wind speed of a single fan can be effectively avoided;

[0023] (4) When multiple fan modules are combined into a parallel air supply mechanism, the fan output power of a single fan module can be reduced, the fan speed can be reduced, and noise can be reduced;

[0024] (5) The number of fan modules connected in parallel can be adjusted according to the actual air volume requirements, which is highly flexible and applicable; and the fan modules are easy to load and unload, and are convenient for maintenance and replacement.

[0025] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A structural schematic diagram of a fan module is provided for an embodiment of the present application;

[0027] Figure 2 Cross-section view of the fan module Figure 1 ;

[0028] Figure 3 Cross-section view of the fan module Figure 2 ;

[0029] Figure 4 Implementation method 1 of the air duct chamber;

[0030] Figure 5 The second embodiment of the air duct chamber;

[0031] Figure 6 A schematic diagram of the structure of the parallel air supply mechanism provided in an embodiment of the present application.

[0032] In the figure: 100-fan module; 10-housing; 11-fan chamber; 111-air inlet; 112-guide plate; 12-air duct chamber; 121-air outlet; 122-first guide wall; 123-second guide wall; 124-first connecting wall; 125-second connecting wall; 13-first fixed surface; 14-second fixed surface; 15-fixed structure; 20-fan; 200-parallel air supply mechanism. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] In the description of the present invention, it should be noted that the terms "vertical direction", "upper", "lower", "horizontal" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, "first", "second", "third", and "fourth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection, a mechanical connection, an electrical connection, a direct connection, or a connection through an intermediate medium, or the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the prior art, in order to facilitate the installation of the air handling system, the floor air supply mode is usually used, which does not require drilling holes in the beams and is safer to install. The current large-volume floor air supply air handling system must balance the air volume and noise under limited conditions. In order to maintain the minimum air supply volume, most air handling systems on the market often have a faster fan speed and louder noise in the air supply mechanism. Moreover, the current floor air supply air handling system is prone to insufficient air volume in larger spaces, or energy waste in smaller spaces. In this case, it is usually necessary to customize the air supply mechanism according to the actual space in the room, resulting in poor versatility of the floor air supply air handling system.

[0037] Based on this, an embodiment of the present application provides a fan module, which improves the fan efficiency by designing the airflow diversion; at the same time, it adopts a modular design, and multiple fan modules can be arranged in parallel according to the actual air volume requirements to form a parallel air supply mechanism, which can significantly reduce noise.

[0038] See also Figure 1 and Figure 2The embodiment of the present application provides a fan module, including: a housing 10 and a fan 20, and the fan 20 is arranged inside the housing 10. Specifically, the housing 10 is provided with a fan chamber 11 and an air duct chamber 12 along the air flow direction, the fan chamber 11 is provided with an air inlet 111, one end of the air duct chamber 12 is correspondingly connected to the side wall of the fan chamber 11, and the other end is provided with an air outlet 121. The fan 20 is arranged inside the housing 10, located between the air inlet 111 and the air outlet 121, and its air inlet end is arranged toward the air inlet 111, and the air flow is guided through the fan chamber 11 and the air duct chamber 12, so that the outlet airflow direction of the air outlet 121 is at a certain angle to the inlet airflow direction of the air inlet 111. Preferably, the air duct chamber 12 includes two opposite and parallel side walls, and the width of the flow duct is kept consistent along the airflow direction, which can reduce the collision of the airflows of adjacent fan modules 100 when multiple fan modules 100 are arranged in parallel. At the same time, the air duct chamber 12 gradually converges along the airflow direction, which is conducive to increasing the flow rate of the airflow.

[0039] Furthermore, the air outlet 121 discharges air horizontally, or discharges air at an angle upward relative to a horizontal plane. In this way, the fan module 100 is easily applied to a floor air supply air treatment system.

[0040] See also Figure 1-5 Furthermore, in some embodiments, the air inlet 111 is opened at the top of the fan chamber 11, and the air inlet end of the fan 20 is clamped at the air inlet 111, so that the airflow outside the fan module 100 directly enters the fan chamber 11 through the fan 20, avoiding the generation of vortices at the air inlet 111 and affecting the flow rate of the air inlet. Preferably, in this embodiment, the airflow direction of the air inlet 111 is perpendicular to the airflow direction of the air outlet 121. Specifically, the airflow enters the air inlet end of the fan 20 vertically, and then is guided through the fan chamber 11 and the air duct chamber 12, and is blown out horizontally to the outside through the air outlet 121.

[0041] Preferably, in the present embodiment, the fan 20 is a backward centrifugal fan with a large pressure head and high efficiency. It is understandable that the airflow enters the inside of the fan 20 through the air inlet end of the fan 20, and then blows to the side walls around the fan chamber 11 through the impeller of the fan 20. At this time, a certain distance is set between the impeller of the fan 20 and the side wall of the fan chamber 11, and this space is used to accommodate the airflow. When the distance between the edge of the impeller of the fan 20 and the side wall of the fan chamber 11 is too small, the wind loss of the airflow is large, which affects the flow rate of the airflow and reduces the efficiency of the fan 20. In some embodiments, the fan chamber 11 can be cylindrical, or a polyhedron shape similar to a cylinder, so that the air outlet of the fan 20 can contact the side wall of the fan chamber 11 more evenly, avoid the pressure loss caused by eddy currents, and thus ensure the airflow rate.

[0042] See also Figure 2and Figure 3 In this embodiment, the horizontal cross-section of the fan chamber 11 is square, which is conducive to the parallel installation of multiple fan modules 100. Further, in this arrangement, multiple guide plates 112 are arranged in the fan chamber 11, and the two ends of the guide plates 112 are tangentially connected to two adjacent side walls respectively to avoid eddy currents at the right-angle connection between the two adjacent side walls, causing pressure loss and affecting the flow rate of the airflow in the fan chamber 11.

[0043] Preferably, the cross-sectional diameter of the guide plate 112 is 0.1-0.4 times the diameter of the impeller of the fan 20, taking the plane parallel to the air inlet as the cross-section. Within this diameter range, the guide plate 112 can effectively reduce the vortex while allowing the fan chamber 11 to have enough space to accommodate the airflow, so as to ensure a suitable airflow field.

[0044] See also Figure 2 Further, in some embodiments, the air duct chamber 12 is provided with a first guide wall 122, one end of which is connected to a side wall of the fan chamber 11, and the other end extends to the air outlet 121, for guiding the airflow in the fan chamber 11 to the air outlet 121. The first guide wall 122 is an arc-shaped surface, and the convex direction of the arc-shaped surface is toward the outside of the air duct chamber 12. Preferably, the cross-sectional diameter of the first guide wall 122 is greater than or equal to 1.2 times the impeller diameter of the fan 20. This setting can ensure a better airflow field and effectively reduce wind loss.

[0045] See also Figure 2 and Figure 4 Furthermore, in some embodiments, the air duct chamber 12 is further provided with a second guide wall 123, one end of which is connected to the other side wall of the fan chamber 11, and the other end extends to the air outlet 121. The second guide wall 123 is arranged facing the first guide wall 122, and is an arc-shaped surface; the outer convex direction of the arc-shaped surface is toward the inside of the air duct chamber 12, and at the same time, along the airflow direction, the second guide wall 123 gradually approaches the first guide wall 122, so that the airflow channel gradually closes. In this way, the flow rate of the airflow when it is blown out through the air outlet 121 can be increased.

[0046] See also Figure 2 and Figure 5 In some other embodiments, the second guide wall 123 may also be a plane, connected to and coplanar with a side wall of the fan chamber 11. In this arrangement, the fan module 100 has a high degree of integrity. At the same time, this plane-shaped second guide wall 123 is suitable for sheet metal production, which is conducive to production and processing and saves costs. It is understandable that the second guide wall 123 may also be other forms of shapes that are easy to reduce wind resistance, guide the airflow to the air outlet 121, and blow it out through the air outlet 121.

[0047] Furthermore, the air duct chamber 12 also includes a first connecting wall 124 and a second connecting wall 125. The first connecting wall 124 is arranged on one side of the first guide wall 122 and the second guide wall 123, and the second connecting wall 125 is arranged on the other side of the first guide wall 122 and the second guide wall 123. The first connecting wall 124 and the second connecting wall 125 are respectively connected to the first guide wall 122 and the second guide wall 123, and are arranged to form an air duct.

[0048] In this embodiment, the first connecting wall 124 and the second connecting wall 125 are arranged in parallel and symmetrically, and one end of the first connecting wall 124 is connected to a side wall of the fan chamber 11 and is coplanar with the side wall to form a first fixed surface 13. The second connecting wall 125 is connected to the side wall of the fan chamber 11 opposite to the first connecting wall 124 and is coplanar with the side wall to form a second fixed surface 14. When multiple groups of fan modules 100 are arranged in parallel, the first fixed surface 13 of one fan module 100 is fixed to the second fixed surface 14 of the adjacent fan module 100. In this way, when a single fan module 100 fails, only the single fan module 100 needs to be disassembled for repair or replacement, which has strong applicability and low maintenance cost.

[0049] See also Figure 1 and Figure 2 Specifically, a detachable fixing structure 15 is provided on the first fixing surface 13 and the second fixing surface 14. For example, a slide groove is provided on the first fixing surface 13, and a slider is provided on the second fixing surface 14. When multiple groups of fan modules 100 are arranged in parallel, it is only necessary to insert the slider into the slide groove and slide it to a fixed position to achieve the fixing between adjacent fan modules 100. In some other embodiments, the fixing structure 15 may also be a buckle structure that cooperates with each other; the fixing structure 15 may also lock the adjacent first fixing surface 13 and the second fixing surface 14 of two adjacent groups of fan modules 100 by fasteners, which will not be described in detail here.

[0050] Furthermore, in some embodiments, a buffer pad (not shown) is provided on the first fixed surface 13 and / or the second fixed surface 14. When two fan modules 100 are installed side by side, the buffer pads respectively abut against the first fixed surface 13 of one fan 20 and the second fixed surface 14 of the other fan 20, so as to avoid collision due to working vibration of the fan 20 when multiple groups of fan modules 100 are arranged side by side, thereby causing loud noise.

[0051] See also Figure 1 , Figure 2 and Figure 6The embodiment of the present application also provides a parallel air supply mechanism 200, including at least two groups of fan modules 100 arranged in parallel, and the adjacent fan modules 100 are fixedly connected by the fixing structure 15 on the first fixing surface 13 and the second fixing surface 14 to achieve large air supply. The parallel air supply mechanism 200 can reduce the output power of a single fan module 100 and reduce the speed of its fan 20 to achieve noise reduction. At the same time, each fan module 100 is provided with an independent airflow channel, which will not interfere with the internal airflow of the adjacent fan module 100, and can reduce a large amount of eddy current pressure drop loss caused by the high wind speed of the single fan module 100, and the wind field drag reduction effect is good.

[0052] Compared with the prior art, the beneficial effects of the embodiments of the present application are:

[0053] (1) By designing the airflow diversion, the wind resistance can be effectively reduced and the fan efficiency can be improved;

[0054] (2) The modular design allows multiple fan modules to be connected in parallel to form a parallel air supply mechanism according to the actual air volume requirements, and is applied to ground-supply air treatment systems with different air volume requirements;

[0055] (3) By designing independent air chambers and flow channels for individual fans, the eddy current pressure drop loss caused by excessive wind speed of a single fan can be effectively avoided;

[0056] (4) When multiple fan modules are combined into a parallel air supply mechanism, the fan output power of a single fan module can be reduced, the fan speed can be reduced, and noise can be reduced;

[0057] (5) The number of fan modules connected in parallel can be adjusted according to the actual air volume requirements, which is highly flexible and applicable; and the fan modules are easy to load and unload, and are convenient for maintenance and replacement.

[0058] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and the utility model is also intended to include these modifications and modifications.

Claims

1. A fan module, characterized in that: include: The housing is provided with a fan chamber and an air duct chamber along the air flow direction, the fan chamber is provided with an air inlet; one end of the air duct chamber is conductively connected to the fan chamber, and the other end is provided with an air outlet; the air flow direction of the air inlet is at a certain angle to the air flow direction of the air outlet; the air duct chamber gradually converges along the air flow direction; The fan is fixedly arranged inside the fan chamber, and the air inlet end of the fan is arranged close to the air inlet.

2. A fan module according to claim 1, characterized in that: The air inlet is opened at the top of the fan chamber, and the fan is mounted at the air inlet; the air inlet airflow direction of the air inlet is perpendicular to the air outlet airflow direction of the air outlet.

3. A fan module according to claim 2, characterized in that: The fan is a backward centrifugal fan.

4. A fan module according to claim 2, characterized in that: The cross-sectional shape of the fan chamber is square; a plurality of arc-shaped guide plates are arranged in the fan chamber, and two ends of the guide plates are respectively tangentially connected to two adjacent side walls of the fan chamber.

5. A fan module according to claim 4, characterized in that: Taking the plane parallel to the air inlet as the cross section, the cross-sectional diameter of the guide plate is 0.1-0.4 times the diameter of the fan impeller.

6. A fan module according to claim 1, characterized in that: The air duct chamber is provided with a first guide wall, which is a curved surface with its outward convex direction facing the outside of the air duct chamber; one end of the first guide wall is connected to the side wall of the fan chamber, and the other end thereof extends to the air outlet.

7. A fan module according to claim 6, characterized in that: The diameter of the first guide wall is greater than or equal to 1.2 times the diameter of the fan impeller.

8. A fan module according to claim 6, characterized in that: The air duct chamber is further provided with a second flow guide wall, and the second flow guide wall is arranged facing the first flow guide wall; One end of the second guide wall is connected to the side wall of the fan chamber, and the other end extends to the air outlet; The second guide wall is a curved surface, and its convex direction is toward the interior of the air duct chamber; or, the second guide wall is a flat surface.

9. A fan module according to claim 8, characterized in that: The first guide wall and the second guide wall gradually converge along the airflow direction.

10. A parallel air supply mechanism, characterized in that: include: At least two groups of wind turbine modules described in any one of claims 1 to 9 are fixedly arranged in parallel.

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