Fresh air fan

Abstract

The utility model provides a fresh air draught fan which comprises a draught fan shell, the draught fan shell comprises a first end plate, a second end plate and a connecting beam, the connecting beam is arranged between the first end plate and the second end plate, and the first end plate is provided with an air inlet; the impeller is installed in the fan shell, the impeller is provided with an impeller shaft, and the impeller shaft is rotatably installed on the second end plate; the air outlet plate is located between the first end plate and the second end plate and surrounds the peripheral side of the impeller, air outlets are evenly formed in the air outlet plate, and the air outlets communicate with an inner cavity of the fan shell; and the driving device is provided with an output shaft connected with the impeller shaft. The fan solves the problem that an existing fan cannot achieve a uniform and good ventilation effect.

Description

Technical Field

[0001] This utility model relates to the field of ventilation equipment technology, and more specifically, to a fresh air fan. Background Technology

[0002] With the rapid development of society, the application of fans is becoming more and more widespread. Traditional fans mostly adopt a fixed volute structure with a single air outlet direction, resulting in uneven airflow distribution around the fan and failing to achieve a uniform and good ventilation effect. Utility Model Content

[0003] The problem solved by this invention is that existing fans cannot achieve uniform and good ventilation.

[0004] To address the aforementioned problems, this utility model provides a fresh air fan, comprising: a fan housing, the fan housing including a first end plate, a second end plate, and a connecting beam, the connecting beam being disposed between the first end plate and the second end plate, the first end plate having an air inlet; an impeller, the impeller being installed inside the fan housing, the impeller having an impeller shaft rotatably mounted on the second end plate; an air outlet plate, the air outlet plate being located between the first end plate and the second end plate and surrounding the periphery of the impeller, the air outlet plate having evenly distributed air outlets communicating with the inner cavity of the fan housing; and a drive device, the drive device having an output shaft connected to the impeller shaft.

[0005] The technical effects achieved by adopting this technical solution are as follows: the drive device controls the impeller to rotate, so that the airflow enters from the air inlet and is blown out from the air outlet around the impeller. Fresh air can be blown evenly around the fresh air fan, avoiding excessive or insufficient local air pressure on any side, thereby achieving better ventilation effect.

[0006] Furthermore, the air outlet plate includes at least one mesh plate, and the air outlet is a mesh hole on the mesh plate.

[0007] The technical effects achieved by adopting this technical solution are as follows: the grid plate is formed by stamping interlaced metal wires, which is easy to process and also plays a role in dust prevention while providing ventilation.

[0008] Furthermore, the air outlet plate includes: a frame, the frame being connected to the fan housing, and the mesh plate being sandwiched between the frame and the fan housing.

[0009] The technical effects achieved by adopting this technical solution are as follows: the air outlet plate adopts a separate frame and mesh plate structure, which is convenient for individual replacement and saves costs; and the mesh plate is easier to disassemble and clean, thus improving cleaning efficiency.

[0010] Furthermore, the air outlet plate is detachably connected to the fan housing.

[0011] The technical effects achieved by adopting this technical solution are: it facilitates the replacement, maintenance and cleaning of the air outlet plate; it also facilitates the inspection and maintenance of the impeller.

[0012] Furthermore, the fan housing includes a first locking member, which is disposed on the connecting beam, the periphery of the first end plate, and the periphery of the second end plate; the periphery of the air outlet plate has a first locking hole, and the first locking member cooperates with the first locking hole so that the air outlet plate is installed between the first end plate and the second end plate.

[0013] The technical effects achieved by adopting this technical solution are as follows: the first locking component realizes the positioning and installation of the air outlet plate; specifically, the air outlet plate is positioned and locked to the connecting beam, the first end plate and the second end plate through the corresponding first locking holes on all four sides, so as to achieve the effect of stable air outlet.

[0014] Furthermore, the fan housing also includes a first reinforcing beam, which is disposed between adjacent connecting beams and between the first end plate and the second end plate; a second reinforcing beam is also provided inside the air outlet plate, and the first reinforcing beam and the second reinforcing beam are detachably connected.

[0015] The technical effects achieved by adopting this technical solution are as follows: The first reinforcing beam is used to further improve the strength of the fan casing and prevent deformation of the connecting beam, the first end plate, and the second end plate; the second reinforcing beam is used to improve the bending resistance of the air outlet plate; the first reinforcing beam and the second reinforcing beam work together to enhance the installation strength of the air outlet plate, and the two can be detached to facilitate the cleaning and replacement of the air outlet plate.

[0016] Furthermore, the first reinforcing beam includes a second locking member; the second reinforcing beam has a second locking hole on its periphery, and the second locking member engages with the second locking hole.

[0017] The technical effects achieved by adopting this technical solution are as follows: the second locking component is used for positioning and installation of the second locking hole, so that the first reinforcing beam and the second reinforcing beam can be accurately matched, thereby improving installation efficiency.

[0018] Furthermore, the fan housing includes a bottom baffle connected between the first end plate and the second end plate, and the bottom baffle is located below the impeller.

[0019] The technical effect achieved by adopting this technical solution is that the bottom of the fan casing does not need to be blown, and the bottom baffle can guide the airflow to the outer areas on both sides of the fan casing, thus avoiding air volume loss.

[0020] Furthermore, the connecting beams located on both sides of the bottom of the first end plate and the second end plate are bottom connecting beams, and the bottom connecting beams and the bottom baffle are an integral structure.

[0021] The technical effects achieved by adopting this technical solution are as follows: After the position of the bottom baffle is fixed, the air outlet plate can be directly installed to the connecting beams on both sides of the bottom baffle, saving the installation time of the connecting beams and improving installation efficiency.

[0022] Furthermore, the impeller shaft has a shaft hole, and the output shaft of the drive device is inserted into the shaft hole.

[0023] The technical effects achieved by adopting this technical solution are as follows: it saves on couplings, and the impeller shaft does not need to extend out of the fan housing to connect with the output shaft, thus shortening the axial dimension of the fresh air fan and reducing space occupation.

[0024] In summary, the above-mentioned technical solutions of this application can have one or more of the following advantages or beneficial effects: i) The drive device controls the impeller to rotate, so that the airflow enters from the air inlet and is blown out from the air outlet plate around the impeller. Fresh air can be blown evenly around the fan, avoiding excessive or insufficient local air pressure on any side, thereby achieving better ventilation effect; ii) The air outlet plate adopts a separate frame and grid plate structure, which is convenient for individual replacement, saves costs, and makes it easier to disassemble and clean the grid plate, improving cleaning efficiency; iii) The first locking part and the second locking part realize the positioning and installation of the air outlet plate, improving the installation efficiency of the air outlet plate. Attached Figure Description

[0025] Figure 1 A schematic diagram of the structure of a fresh air fan provided by this utility model;

[0026] Figure 2 for Figure 1 A magnified view of a portion of region I;

[0027] Figure 3 for Figure 2 Schematic diagram of the structure of the grid plate;

[0028] Figure 4 for Figure 1 Schematic diagram of the connection between the blower casing and the grid plate;

[0029] Figure 5 for Figure 4 A magnified view of a portion of region II;

[0030] Figure 6 for Figure 4 Schematic diagram of the structure of the medium-sized fan casing;

[0031] Figure 7 This is a structural schematic diagram of a fresh air fan from another perspective;

[0032] Figure 8 for Figure 7 A magnified view of a portion of region III.

[0033] Explanation of reference numerals in the attached figures:

[0034] 100-Fresh air blower; 110-Blower housing; 111-First end plate; 112-Second end plate; 113-Connecting beam; 114-First locking element; 115-First reinforcing beam; 116-Second locking element; 117-Bottom baffle; 120-Impeller; 121-Impeller shaft; 130-Air outlet plate; 131-Grid plate; 132-Frame; 133-First locking hole; 134-Second reinforcing beam; 135-Second locking hole; 140-Drive device; 141-Output shaft. Detailed Implementation

[0035] The purpose of this utility model is to provide a new type of fan for achieving a uniform airflow effect around the fan.

[0036] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0037] See Figures 1-7 This utility model provides a fresh air fan 100, which includes: a fan housing 110, the fan housing 110 including a first end plate 111, a second end plate 112 and a connecting beam 113, the connecting beam 113 being disposed between the first end plate 111 and the second end plate 112, the first end plate 111 having an air inlet; an impeller 120, the impeller 120 being installed inside the fan housing 110, the impeller 120 having an impeller shaft 121, the impeller shaft 121 being rotatably mounted on the second end plate 112; an air outlet plate 130, the air outlet plate 130 being located between the first end plate 111 and the second end plate 112 and surrounding the periphery of the impeller 120, the air outlet plate 130 having evenly distributed air outlets, the air outlets being connected to the inner cavity of the ventilation housing 110; and a drive device 140, the drive device 140 having an output shaft 141 connected to the impeller shaft 121.

[0038] In this embodiment, the drive device 140 controls the impeller 120 to rotate, so that the airflow enters from the air inlet and is blown out from the air outlet 130 around the impeller 120. The fresh air can be blown evenly around the fresh air fan 100, avoiding excessive or insufficient local air pressure on any side, thereby achieving a better ventilation effect. The drive device 140 is a motor.

[0039] In one specific embodiment, the air outlet plate 130 includes at least one mesh plate 131, and the air outlet is a mesh hole on the mesh plate 131.

[0040] It should be noted that the grid plate 131 is formed by stamping interlaced metal wires, which is easy to process and also serves to prevent dust while providing ventilation.

[0041] In one specific embodiment, the air outlet plate 130 includes: a frame 132, which is connected to the fan housing 110, and a mesh plate 131 sandwiched between the frame 132 and the fan housing 110.

[0042] It should be noted that the air outlet plate 130 adopts a separate structure of frame 132 and mesh plate 131, which is convenient for individual replacement and saves costs; and the mesh plate 131 is easier to disassemble and clean, improving cleaning efficiency.

[0043] In one specific embodiment, the air outlet plate 130 is detachably connected to the fan housing 110, which facilitates the replacement, maintenance and cleaning of the air outlet plate 130; it also facilitates the maintenance of the impeller 120.

[0044] In one specific embodiment, the fan housing 110 includes a first locking member 114, which is disposed on the periphery of the connecting beam 113, the first end plate 111, and the second end plate 112; the periphery of the air outlet plate 130 has a first locking hole 133, and the first locking member 114 cooperates with the first locking hole 133 so that the air outlet plate 130 is installed between the first end plate 111 and the second end plate 112.

[0045] It should be noted that the first locking component 114 enables the positioning and installation of the air outlet plate 130; specifically, the air outlet plate 130 is positioned and locked to the connecting beam 113, the first end plate 111, and the second end plate 112 through the corresponding first locking holes 133 on all four sides, thereby achieving the effect of stable air outlet of the air outlet plate 130.

[0046] Preferably, the first locking element 114 is a screw that extends outward from the inside of the connecting beam 113, the first end plate 111, and the second end plate 112, and passes through the grid plate 131 and the frame 132, further securing the grid plate 131. The screw is locked to the outside by a nut, and the grid plate 131 and the frame 132 can be disassembled after removing the nut, making it more convenient.

[0047] In one specific embodiment, the fan housing 110 further includes a first reinforcing beam 115, which is disposed between adjacent connecting beams 113 and between the first end plate 111 and the second end plate 112; the air outlet plate 130 is also provided with a second reinforcing beam 134, and the first reinforcing beam 115 and the second reinforcing beam 134 are detachably connected.

[0048] For example, the first reinforcing beam 115 is parallel to the connecting beam 113, and the two ends of the first reinforcing beam 115 are respectively facing the first end plate 111 and the second end plate 112. Two, three or four reinforcing beams 115 can be set between adjacent connecting beams 113, and there is no limitation here.

[0049] It should be noted that the first reinforcing beam 115 is used to further improve the strength of the fan casing 110 and prevent deformation of the connecting beam 113, the first end plate 111, and the second end plate 112; the second reinforcing beam 134 is used to improve the bending resistance of the air outlet plate 130; the first reinforcing beam 115 and the second reinforcing beam 134 together enhance the installation strength of the air outlet plate 130, and the two can be detached to facilitate the cleaning and replacement of the air outlet plate 130.

[0050] In one specific embodiment, the first reinforcing beam 115 includes a second locking member 116; the second reinforcing beam 134 has a second locking hole 135 on its periphery, and the second locking member 116 cooperates with the second locking hole 135.

[0051] It should be noted that the second locking member 116 is used for positioning and installation of the second locking hole 135, so that the first reinforcing beam 115 and the second reinforcing beam 134 can be accurately matched, thereby improving installation efficiency.

[0052] In one specific embodiment, the fan housing 110 includes a bottom baffle 117, which is connected between the first end plate 111 and the second end plate 112, and is located below the impeller 120.

[0053] It should be noted that the bottom of the fan housing 110 does not require air blowing. The bottom baffle 117 can guide the airflow to the outer areas on both sides of the fan housing 110 to avoid air volume loss.

[0054] In one specific embodiment, the connecting beams 113 located on the bottom sides of the first end plate 111 and the second end plate 112 are bottom connecting beams 113, and the bottom connecting beams 113 and the bottom baffle 117 are an integral structure.

[0055] It should be noted that after the bottom baffle 117 is fixed in position, the air outlet plate 130 can be directly installed to the connecting beams 113 on both sides of the bottom baffle 117, saving the installation time of the connecting beams 113 and improving installation efficiency.

[0056] In one specific embodiment, the impeller shaft 121 has a shaft hole, and the output shaft 141 of the drive device 140 is inserted into the shaft hole.

[0057] It should be noted that by eliminating the need for a coupling, the impeller shaft 121 does not need to extend out of the fan housing 110 to connect with the output shaft 141, thus shortening the axial dimension of the fresh air fan 100 and reducing space occupation. The output shaft 141 is connected to the shaft hole via a key to achieve synchronous rotation.

[0058] Although the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A fresh air fan, characterized by, The fresh air fan comprises: a fan shell comprising a first end plate, a second end plate and connecting beams arranged between the first end plate and the second end plate, the first end plate having an air inlet; a impeller installed in the fan shell, the impeller having an impeller shaft rotatably installed on the second end plate; an air outlet plate located between the first end plate and the second end plate and surrounding the impeller, the air outlet plate having uniformly arranged air outlet holes communicating with the inner cavity of the fan shell; a driving device having an output shaft connected with the impeller shaft.

2. The fresh air fan of claim 1, wherein, The air outlet plate comprises at least one grid plate, and the air outlet holes are grid holes on the grid plate.

3. The fresh air fan of claim 2, wherein, The air outlet plate comprises a frame connected with the fan shell, and the grid plate is clamped between the frame and the fan shell.

4. The fresh air fan according to any one of claims 1-3, characterized in that, The air outlet plate and the fan shell are detachably connected.

5. The fresh air fan of claim 4, wherein, The fan shell comprises a first locking member arranged on the connecting beams, the first end plate and the second end plate; The air outlet plate has a first locking hole on the periphery, and the first locking member cooperates with the first locking hole to enable the air outlet plate to be installed between the first end plate and the second end plate.

6. The fresh air fan of claim 5, wherein, The fan shell further comprises a first reinforcing beam arranged between adjacent connecting beams and between the first end plate and the second end plate; The air outlet plate further comprises a second reinforcing beam, and the first reinforcing beam and the second reinforcing beam are detachably connected.

7. The fresh air fan of claim 6, wherein, The first reinforcing beam comprises a second locking member; The second reinforcing beam has a second locking hole on the periphery, and the second locking member cooperates with the second locking hole.

8. The fresh air fan of claim 1, wherein, The fan shell comprises a bottom baffle connected between the first end plate and the second end plate, and the bottom baffle is located below the impeller.

9. The fresh air fan of claim 8, wherein, The connecting beams located on both sides of the bottom of the first end plate and the second end plate are bottom connecting beams, and the bottom connecting beams and the bottom baffle are of an integral structure.

10. The fresh air fan of claim 1, wherein, The impeller shaft has a shaft hole, and the output shaft of the driving device is inserted into the shaft hole.

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