Exhaust fan convenient to clean

Abstract

The utility model discloses an exhaust fan convenient to clean, which comprises a front unit and a rear unit, the rear unit comprises a rear casing, a mounting cavity is arranged in the rear casing, a driving element is arranged in the mounting cavity, a front transmission coupler is arranged at the front end of the driving element, and an air inlet is arranged on the rear end face of the rear casing; the front unit comprises a front machine shell, the rear end of the front machine shell communicates with the rear machine shell, an air outlet is formed in the front end face of the front machine shell, a fan blade module is rotationally arranged in the front machine shell, and a rear transmission coupler is arranged at the rear end of the fan blade module. The front transmission coupler and the rear transmission coupler are in coupling transmission; the front machine shell is detachably connected with the rear machine shell. In the disassembly process, the front unit is separated from the rear unit, the front machine shell and the fan blade module can be taken down at the same time, meanwhile, due to the fact that the driving element is located on the rear machine shell, the whole front unit can be directly flushed and cleaned, and the fan blade module does not need to be independently disassembled.

Description

Technical Field

[0001] The utility model relates to an exhaust fan which is convenient to clean. Background Art

[0002] Prior art, such as Chinese utility model patent document with publication number CN217976682U, discloses an exhaust fan, including a rear shell, a volute symmetrically arranged at the bottom of the rear shell, an exhaust hole being opened on the side of the volute, a ventilation impeller rotatably connected to the inside of the volute, the ventilation impeller being transmission-connected to a ball motor at the back center of the volute, a junction box electrically connected to the ball motor being installed on one side of the back of the volute, a grid plate being clamped and fixed on the top of the rear shell, and a positioning assembly being symmetrically installed on the bottom of the rear shell.

[0003] Based on the above, when the existing exhaust fan is cleaned and maintained later, it is necessary to first remove the grille plate and then remove the internal ventilation impeller. The problem with this structure is that the grille plate and the ventilation impeller cannot be quickly removed from the housing. This step-by-step disassembly method will affect the disassembly efficiency and installation efficiency. Especially when the exhaust fan is installed at a higher position, the worker is operating at a high altitude. In this working environment, how to quickly separate or assemble the components is a problem to be solved. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model provides an exhaust fan which is convenient for disassembly and assembly and subsequent cleaning.

[0005] An exhaust fan designed for easy cleaning according to this purpose comprises a front unit and a rear unit, wherein the rear unit comprises a rear casing, a mounting cavity is arranged in the rear casing, a driving element is arranged in the mounting cavity, a front transmission coupler is arranged at the front end of the driving element, and an air inlet is arranged on the rear end surface of the rear casing;

[0006] The front unit comprises a front casing, the rear end of the front casing is connected to the rear casing, an air outlet is arranged on the front end surface of the front casing, a fan blade module is rotatably arranged in the front casing, and a rear transmission coupler is arranged at the rear end of the fan blade module;

[0007] The front transmission coupler is coupled to the rear transmission coupler for transmission;

[0008] The front housing is detachably connected to the rear housing.

[0009] Preferably, the front housing is provided with a connector connected to the rear housing, the left and right sides of the connector are provided with pin holes, and the left and right sides of the rear housing are provided with spring pins that can be plugged into the pin holes.

[0010] Preferably, a fixing part is fixedly connected to the rear end face of the front casing, the connecting part is arranged on the fixing part, a mounting part is arranged on the fixing part, the fan blade module includes a rotating shaft and a fan blade element, the rotating shaft is rotatably arranged on the mounting part, and the fan blade element is connected to the rotating shaft.

[0011] Preferably, the front side of the front casing is opened, an air outlet grille is connected to the front end surface of the front casing, and the air outlet is arranged on the air outlet grille.

[0012] Preferably, the air outlet grille and the front casing are fixed to each other by snap-fitting.

[0013] Preferably, the connecting member is a ring-shaped structure, the inner wall of the connecting member is fitted with the outer wall of the rear housing, and the rear end face of the fixing member is fitted with the front end face of the rear housing for limiting position.

[0014] Compared with the prior art, the utility model divides the exhaust fan into a unit and a rear unit, wherein the rear unit includes a rear casing, wherein an installation cavity is provided in the rear casing, wherein a driving element is provided in the installation cavity, a front transmission coupler is provided at the front end of the driving element, and an air inlet is provided on the rear end face of the rear casing; the front unit includes a front casing, wherein the rear end of the front casing is connected to the rear casing, an air outlet is provided on the front end face of the front casing, a blade module is rotatably provided in the front casing, and a rear transmission coupler is provided at the rear end of the blade module; the front transmission coupler is coupled and transmitted with the rear transmission coupler. When disassembling, the front unit is separated from the rear unit, so that the front casing and the blade module can be removed at the same time. At the same time, since the driving element is located in the rear casing, the entire front unit can be directly flushed and cleaned without separately disassembling the blade module. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0016] Figure 2 This is one of the cross-sectional structural schematic diagrams of the utility model;

[0017] Figure 3 This is the second schematic diagram of the cross-sectional structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the cross-sectional exploded structure of the utility model. DETAILED DESCRIPTION

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0020] See also Figure 1-Figure 4, an exhaust fan that is easy to clean, comprising a front unit 20 and a rear unit 10, wherein the rear unit 10 comprises a rear housing 110, wherein a mounting cavity 120 is provided in the rear housing 110, wherein a driving element 30 is provided in the mounting cavity 120, wherein a front transmission coupler 440 is provided at the front end of the driving element 30, and an air inlet 130 is provided on the rear end surface of the rear housing 110;

[0021] The front unit 20 includes a front housing 210, the rear end of the front housing 210 is connected to the rear housing 110, an air outlet 200 is provided on the front end surface of the front housing 210, a fan module 40 is rotatably provided in the front housing 210, and a rear transmission coupler 430 is provided at the rear end of the fan module 40;

[0022] The front transmission coupler 440 is coupled and transmitted with the rear transmission coupler 430;

[0023] The front housing 210 is detachably connected to the rear housing 110 .

[0024] Furthermore, the front transmission coupler 440 is coupled to the rear transmission coupler 430 by plugging them together front and back. When separating, the rear housing 110 is fixed, and the front housing 210 drives the front transmission coupler 440 to move forward relative to the rear transmission coupler 430 to achieve separation.

[0025] Based on the above embodiment, the front unit and the rear unit can be separated, so that when disassembling, the front housing and the fan module can be removed at the same time. Therefore, since the driving element is located in the rear housing, the entire front unit can be directly flushed and cleaned without removing the fan module separately.

[0026] Furthermore, the driving element 30 is a motor.

[0027] See also Figures 1 to 4 The front housing 210 is provided with a connector 240 connected to the rear housing 110, and the left and right sides of the connector 240 are provided with pin holes 250, and the left and right sides of the rear housing 110 are provided with spring latches 50 that can be plugged into the pin holes 250. Based on this embodiment, when disassembling, the front housing and the rear housing can be separated by simply pressing the spring latch to withdraw the spring latch from the pin hole, which is convenient for disassembly. In this embodiment, the spring latch is an existing commercially available product.

[0028] Furthermore, the front housing 210 and the rear housing 110 may be connected by existing connection methods such as a detachable snap connection or a bolted connection.

[0029] See also Figure 2A fixing member 230 is fixedly connected to the rear end face of the front housing 210, the connecting member 240 is arranged on the fixing member 230, and a mounting member 400 is arranged on the fixing member 230. The fan blade module 40 includes a rotating shaft 410 and a fan blade element 420. The rotating shaft 410 is rotatably arranged on the mounting member 400, and the fan blade element 420 is connected to the rotating shaft 410.

[0030] See also Figure 3 The front side of the front housing 210 is opened, an air outlet grille 220 is connected to the front end surface of the front housing 210 , and the air outlet 200 is arranged on the air outlet grille 220 .

[0031] In the present invention, the air outlet grille 220 and the front housing 210 are fixed to each other by being clamped.

[0032] See also Figure 2 The connecting member 240 is a ring-shaped structure, the inner wall of the connecting member 240 is in contact with the outer wall of the rear housing 110, and the rear end face of the fixing member 230 is in contact with the front end face of the rear housing 110 for limiting position. In this embodiment, the fixing member 230 is in contact with the rear housing 110 to constrain the front and rear positions of the two, and at the same time, under the action of the connecting member 240, the spring latch 50 is connected to the connecting member 240.

[0033] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments. The above embodiments and the description are only to illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. An exhaust fan that is easy to clean, characterized in that: The invention comprises a front unit (20) and a rear unit (10), wherein the rear unit (10) comprises a rear casing (110), wherein a mounting cavity (120) is provided in the rear casing (110), wherein a driving element (30) is provided in the mounting cavity (120), wherein a front transmission coupler (440) is provided at the front end of the driving element (30), and an air inlet (130) is provided on the rear end surface of the rear casing (110); The front unit (20) comprises a front casing (210), the rear end of the front casing (210) is connected to the rear casing (110), an air outlet (200) is arranged on the front end surface of the front casing (210), a fan blade module (40) is rotatably arranged in the front casing (210), and a rear transmission coupler (430) is arranged at the rear end of the fan blade module (40); The front transmission coupler (440) is coupled to the rear transmission coupler (430) for transmission; The front housing (210) and the rear housing (110) are detachably connected.

2. The conveniently cleanable exhaust fan according to claim 1, characterized in that: The front housing (210) is provided with a connecting piece (240) connected to the rear housing (110), the connecting piece (240) is provided with pin holes (250) on the left and right sides, and the rear housing (110) is provided with spring pins (50) that can be plugged into the pin holes (250) on the left and right sides.

3. The conveniently cleanable exhaust fan according to claim 2, characterized in that: A fixing member (230) is fixedly connected to the rear end face of the front housing (210); the connecting member (240) is arranged on the fixing member (230); a mounting member (400) is arranged on the fixing member (230); the fan blade module (40) comprises a rotating shaft (410) and a fan blade element (420); the rotating shaft (410) is rotatably arranged on the mounting member (400); and the fan blade element (420) is connected to the rotating shaft (410).

4. The conveniently cleanable exhaust fan according to claim 1, characterized in that: The front side of the front casing (210) is provided with an opening, an air outlet grille (220) is connected to the front end surface of the front casing (210), and the air outlet (200) is provided on the air outlet grille (220).

5. The conveniently cleanable exhaust fan according to claim 4, characterized in that: The air outlet grille (220) and the front housing (210) are mutually clamped and fixed.

6. The conveniently cleanable exhaust fan according to claim 3, characterized in that: The connecting piece (240) is a ring-shaped structure, the inner wall of the connecting piece (240) is fitted with the outer wall of the rear housing (110), and the rear end surface of the fixing piece (230) is fitted with the front end surface of the rear housing (110) for limiting position.

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