Combined axial flow fan

Abstract

The utility model discloses a combined axial flow fan, which relates to the technical field of axial flow fans, and comprises a motor, a plurality of groups of support frames are fixedly arranged on a shell of the motor in a circumferential array manner, the plurality of groups of support frames are fixedly arranged on a shell, and the shell is formed by splicing a plurality of groups of guide cylinders end to end. According to the design scheme, through the design that the multiple sets of supporting frames are fixedly installed on the outer shell of the motor in the circumferential array mode, when the axial flow fan is assembled, the motor is fixedly installed on the machine shell through the supporting frames, and due to the fact that the lengths of all the sets of supporting frames are the same, the axis of the motor and the axis of the machine shell are automatically aligned through the supporting frames; therefore, the position of the motor does not need to be adjusted repeatedly, the installation efficiency is improved, the length of the machine shell can be prolonged by additionally installing other guide cylinders according to different installation occasions, and the axial flow fan can be suitable for various installation occasions.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fans, in particular to a combined axial flow fan. Background Art

[0002] Axial flow fans are fans whose airflow direction is in the same direction as the axis of the fan blades, such as electric fans and air conditioner outdoor fans. They are called "axial flow" because the gas flows parallel to the fan axis. Axial flow fans are usually used in places where the flow rate requirements are high and the pressure requirements are low, such as ventilation in general factories, warehouses, offices, and residential areas. They can also be used in air coolers (air coolers), evaporators, condensers, spray dust suppression equipment, etc.

[0003] The axial flow fan is mainly composed of impeller, casing, motor and other parts. The motor is installed in the casing through a bracket. When installing the motor of the existing axial flow fan, the axis of the motor shaft is difficult to align with the axis of the casing. This causes the installation and debugging process of the motor to take a long time, affecting the installation efficiency. The length of the casing is fixed and cannot be flexibly adjusted according to the actual installation situation. Utility Model Content

[0004] In order to overcome the above-mentioned defects in the prior art, the utility model provides a combined axial flow fan.

[0005] The technical solution adopted by the utility model to solve its technical problems is: a combined axial flow fan, including a motor, a plurality of groups of support frames are fixedly installed in a circumferential array on the outer shell of the motor, and the plurality of groups of the support frames are fixedly installed on the casing, and the casing is composed of a plurality of groups of guide tubes spliced ​​end to end.

[0006] Furthermore, the guide tube is composed of two groups of semicircular shells, and several groups of limiting grooves are opened on the end faces of the semicircular shells. The other end of the semicircular shells is provided with limiting protrusions corresponding to the limiting grooves, and the limiting grooves and the limiting protrusions are both provided with first through holes.

[0007] Furthermore, a plurality of mounting grooves are provided on the side wall of the motor, the support frame is fixedly installed in the mounting grooves, and a positioning plate is provided at one end of the support frame away from the motor, and the positioning plate is cooperatively installed in the limiting groove.

[0008] Furthermore, an air inlet hood is detachably installed at the end of the casing, and the air inlet hood is composed of four groups of cover shells spliced ​​together. A connecting protrusion is provided at the end of the air inlet hood, and a connecting groove is provided on the connecting protrusion. A connecting block corresponding to the connecting groove is provided at the end of the air inlet hood away from the connecting protrusion, and a threaded hole is provided on the connecting block. A second through hole corresponding to the threaded hole is provided on the side wall of the connecting groove.

[0009] Furthermore, a connecting plate corresponding to the limiting groove is provided at one end of the connecting protrusion close to the housing, and a third through hole is formed on the connecting plate.

[0010] The beneficial effect of the utility model is that the design of the utility model is designed that a plurality of groups of support frames are fixedly installed in a circumferential array on the outer casing of the motor. When the axial flow fan is assembled, the motor is fixedly installed on the casing through the support frames. Since the length of each group of support frames is the same, the motor and the axis of the casing are automatically aligned through the support frames, so there is no need to repeatedly adjust the position of the motor, thereby improving the installation efficiency, and according to different installation occasions, the length of the casing can be extended by adding other guide tubes, so that the axial flow fan can be suitable for a variety of installation occasions. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0012] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0013] Figure 2 It is an exploded view of the utility model;

[0014] Figure 3 It is the front view of the utility model;

[0015] Figure 4 It is a structural schematic diagram of the hood of the utility model;

[0016] Figure 5 It is a structural schematic diagram of the motor of the utility model;

[0017] Figure 6 This is a schematic diagram of the structure of the semicircular housing of the utility model;

[0018] Figure 7 The structure of the cover of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 8 The structure of the cover of the utility model is shown in FIG. Figure 2 .

[0020] In the figure: 1. motor, 11. mounting groove, 2. support frame, 21. positioning plate, 3. casing, 31. guide tube, 32. semicircular casing, 33. limiting groove, 34. limiting protrusion, 35. first through hole, 4. air inlet cover, 41. casing, 42. connecting protrusion, 43. connecting groove, 44. connecting block, 45. threaded hole, 46. second through hole, 47. connecting plate, 48. third through hole. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical solution of the utility model, the utility model is further described below in conjunction with the accompanying drawings. Obviously, the accompanying drawings described below are only one embodiment of the utility model. For ordinary technicians in this field, without paying any creative work, other embodiments can be obtained based on this drawing and embodiment, which all belong to the protection scope of the utility model.

[0022] according to Figure 1-8 As shown, a combined axial flow fan includes a motor 1, on the outer shell of the motor 1 are fixedly mounted a plurality of support frames 2 by a circumferential array of bolts, the plurality of support frames 2 are fixedly mounted on a casing 3 by bolts, and the casing 3 is composed of a plurality of guide tubes 31 spliced ​​end to end.

[0023] In this embodiment, the guide tube 31 is composed of two groups of semicircular outer shells 32, which are fixedly connected by bolts. A plurality of groups of limiting grooves 33 are provided on the end surface of the semicircular outer shell 32, and a limiting protrusion 34 corresponding to the limiting groove 33 is provided at the other end of the semicircular outer shell 32. A first through hole 35 is provided on the limiting groove 33 and the limiting protrusion 34. The limiting protrusions 34 of two adjacent groups of guide tubes 31 are installed together with the limiting grooves 33, and the two adjacent groups of guide tubes 31 are fixed by installing bolts in the first through hole 35, so that the length of the casing 3 can be extended or shortened according to different installation occasions.

[0024] In this embodiment, a plurality of groups of mounting grooves 11 are provided on the side wall of the motor 1, and preferably the number of mounting grooves 11 is four. The support frame 2 is fixedly installed in the mounting grooves 11 by bolts. A positioning plate 21 is provided at one end of the support frame 2 away from the motor 1, and the positioning plate 21 is installed in the limiting groove 33.

[0025] In this embodiment, an air inlet hood 4 is detachably mounted on the end of the casing 3 by bolts. The air inlet hood 4 is a square structure as a whole, and a circular connecting port is provided at the connection with the casing 3. The air inlet hood 4 is composed of four groups of cover shells 41. A connecting protrusion 42 is provided at the end of the air inlet hood 4, and a connecting groove 43 is provided on the connecting protrusion 42. A connecting block 44 corresponding to the connecting groove 43 is provided at the end of the air inlet hood 4 away from the connecting protrusion 42, and a threaded hole 45 is provided on the connecting block 44. A second through hole 46 corresponding to the threaded hole 45 is provided on the side wall of the connecting groove 43. The connecting block 44 of the cover shell 41 is cooperatively installed in the connecting groove 43 of the adjacent cover shell 41 and fixed by bolts, so that the four groups of cover shells 41 are connected end to end to form the air inlet hood 4.

[0026] In this embodiment, a connecting plate 47 corresponding to the limiting groove 33 is provided at one end of the connecting protrusion 42 close to the housing 3. A third through hole 48 is opened on the connecting plate 47. The connecting plate 47 is clamped in the limiting groove 33 of the housing 3 and fixed by bolts.

[0027] When installing the utility model, the support frame 2 is first fixed in the installation groove 11 of the motor 1 by bolts, and then the positioning plates 21 at the ends of the support frame 2 are respectively installed in the limiting grooves 33 of the casing 3. Since the lengths of each group of support frames 2 are the same, the motor 1 can be automatically aligned with the axis of the casing 3 after the support frame 2 is installed. If the length of the casing 3 is to be extended, only other guide tubes 31 need to be installed to extend the length of the casing 3, so that it can be suitable for a variety of installation occasions. Finally, the air inlet cover 4 is installed at the air inlet end of the casing 3. The air inlet cover 4 is used to increase the air inlet area of ​​the pipeline. The air inlet cover 4 can be disassembled during transportation to reduce the space occupied by the air inlet cover 4, which is convenient for transportation.

[0028] The above embodiments are only exemplary embodiments of the present invention and are not intended to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art may make various modifications or equivalent substitutions to the present invention within the essence and protection scope of the present invention, and such modifications or equivalent substitutions shall also be deemed to fall within the protection scope of the present invention.

Claims

1. A combined axial flow fan, comprising a motor (1), characterized in that: A plurality of groups of support frames (2) are fixedly mounted in a circumferential array on the outer shell of the motor (1), and the plurality of groups of support frames (2) are fixedly mounted on the casing (3). The casing (3) is composed of a plurality of groups of guide tubes (31) spliced ​​end to end.

2. A combined axial flow fan according to claim 1, characterized in that: The guide tube (31) is composed of two groups of semicircular outer shells (32), and a plurality of groups of limiting grooves (33) are provided on the end surfaces of the semicircular outer shells (32). A limiting protrusion (34) corresponding to the limiting groove (33) is provided at the other end of the semicircular outer shell (32), and a first through hole (35) is provided on both the limiting groove (33) and the limiting protrusion (34).

3. A combined axial flow fan according to claim 2, characterized in that: A plurality of groups of mounting grooves (11) are provided on the side wall of the motor (1), the support frame (2) is fixedly installed in the mounting grooves (11), and a positioning plate (21) is provided at one end of the support frame (2) away from the motor (1), and the positioning plate (21) is cooperatively installed in the limiting groove (33).

4. A combined axial flow fan according to claim 2, characterized in that: An air inlet cover (4) is detachably mounted on the end of the housing (3), and the air inlet cover (4) is composed of four groups of cover shells (41) spliced ​​together. A connecting protrusion (42) is provided at the end of the air inlet cover (4), and a connecting groove (43) is provided on the connecting protrusion (42). A connecting block (44) corresponding to the connecting groove (43) is provided at one end of the air inlet cover (4) away from the connecting protrusion (42), and a threaded hole (45) is provided on the connecting block (44). A second through hole (46) corresponding to the threaded hole (45) is provided on the side wall of the connecting groove (43).

5. A combined axial flow fan according to claim 4, characterized in that: A connecting plate (47) corresponding to the limiting groove (33) is provided at one end of the connecting protrusion (42) close to the housing (3), and a third through hole (48) is provided on the connecting plate (47).

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