A diagonal flow duct fan

Abstract

The present invention discloses an oblique flow duct fan, which is convenient for disassembly and maintenance. A first air deflector and a second air deflector are respectively provided at both ends of the main housing of the present invention; a semi-enclosed set of a first mounting frame and a second mounting frame are provided on the outside of the main housing, the first mounting frame and the second mounting frame are matched and correspondingly arranged, the middle of the first mounting frame and the second mounting frame are provided with a mounting seat that is flat outward, and the outer wall of the main housing is provided with a clamping seat for the ends of the first mounting frame and the second mounting frame; a booster cover is embedded in the main housing near one end of the first air deflector, the booster cover is tightly embedded in the inner wall of the main housing, and a first inner drum ring is provided at the end of the booster cover away from the main housing, the cross-section of the first inner drum ring is an arc-shaped, the first inner drum ring is convex inwardly away from the end of the main housing, and the first inner drum ring gradually shrinks to the inner wall of the booster cover toward one end of the main housing. The present invention can achieve the effect of increasing the air intake of the fan and can realize convenient and accurate installation of the main housing.

Description

Technical Field

[0001] The present invention relates to the technical field of fans, in particular to a combined structure applied to high-pressure duct fans, and more particularly to a pressurized, diagonal-flow duct fan that is easy to disassemble and assemble. Background Art

[0002] In buildings, duct ventilation systems are generally used as ventilation equipment to exchange outside air to ensure the cleanliness of the air inside the building. In this duct ventilation system, duct fans are generally used to draw outside air into the building or discharge the air inside the building to the outside.

[0003] Diagonal flow duct fans are one type of duct fans. Diagonal flow duct fans are commonly used in industrial plants and buildings as ventilation equipment for indoor ventilation or duct pressurization, mainly for room ventilation and pressurization of ventilation equipment.

[0004] Currently, diagonal flow duct fans are inconvenient to install and difficult to disassemble. They are not installed tightly or firmly enough, and are prone to vibration during operation. Existing diagonal flow duct fans do not have a pressurized structure, which prevents the compressed airflow from being drawn into the fan, and do not increase the fan's air intake volume. The main unit (core component) of the existing diagonal flow duct fan is inconvenient to install, and the main unit (core component) needs to be assembled into the fan housing step by step, making it difficult to install the main unit as a whole. Summary of the Invention

[0005] The purpose of the present invention is to overcome the shortcomings of the prior art and provide an oblique flow duct fan that is easy to install. The installation structure adopts a slide rail buckle structure, which is easy to disassemble and maintain.

[0006] Another object of the present invention is to provide an oblique flow duct fan that allows the air flow to rise inside the shell toward the fan, allowing the high-speed air flow to be compressed and rolled into the fan blades, thereby achieving the effect of increasing the fan's air intake.

[0007] Furthermore, another object of the present invention is to provide an oblique flow duct fan in which the fan main unit assembly is integrally assembled on the main unit base, thereby realizing a structural design that is convenient for assembly and easy for assembly.

[0008] A diagonal flow duct fan includes a main body housing, with a first air deflector and a second air deflector provided at both ends of the main body housing; a semi-enclosed set of first and second mounting brackets are provided on the outside of the main body housing, the first and second mounting brackets being arranged in a matching manner, a mounting seat with an outwardly flat surface is provided in the middle of the first and second mounting brackets, and a clamping seat for clamping the ends of the first and second mounting brackets is provided on the outer wall of the main body housing;

[0009] A boost cover is embedded in one end of the main engine housing close to the first air guide cover, and the boost cover is tightly embedded in the inner wall of the main engine housing. A first inner drum ring is provided at the end of the boost cover away from the main engine housing. The cross section of the first inner drum ring is an arc-shaped. The end of the first inner drum ring (boost arc ring) away from the main engine housing is convex inwardly, and the end of the first inner drum ring toward the main engine housing gradually shrinks to the inner wall of the boost cover;

[0010] A coaxially arranged host base is provided in the host housing near a port of the second air guide cover. The host base is bowl-shaped (cup-shaped) with a circular arc bottom. A separation distance (air guide channel) is provided between the host base and the inner wall of the host housing. A plurality of guide wings are circumferentially distributed on the host base between the separation distances between the host base and the inner wall of the host housing. The guide wings are axially arranged in the host housing, and the host base is arranged in the host housing through the guide wings.

[0011] Furthermore, in some embodiments, a first mounting bracket and a second mounting bracket are provided on the outer wall of the host housing in a manner opposite to each other; the first mounting bracket includes a mounting seat, and wings are provided on both sides of the mounting seat, extending outward and covering the outer wall of the host housing; a positioning groove is provided on the outer surface of the mounting seat, the opening of the positioning groove faces the second mounting bracket in a manner opposite to each other, a second mounting hole is provided in the positioning groove, and a recessed limit groove is provided in the positioning groove;

[0012] The mounting seat is provided with an inwardly extending positioning plate, the positioning plate is located beside the positioning slot opening, the positioning plate extends a protruding portion toward the second mounting bracket disposed oppositely, and a through third mounting hole is formed on the positioning plate;

[0013] The second mounting frame has a symmetrical structure with the first mounting frame, and the mounting seat of the second mounting frame has a structure that matches the mounting seat of the first mounting frame. The positioning plate of the second mounting frame is staggered with the positioning plate of the first mounting frame, and a raised limit block is provided on the inner bottom of the positioning plate;

[0014] The positioning plate of the first mounting frame is inserted into the positioning slot of the second mounting frame, the third mounting hole in the positioning plate on the first mounting frame is matched and correspondingly arranged with the second mounting hole in the positioning slot on the second mounting frame, and the limit block on the positioning plate in the first mounting frame is matched and correspondingly arranged with the limit slot on the positioning slot in the second mounting frame.

[0015] Furthermore, in some embodiments, the mounting base is provided with wings extending outwardly and covering the outer wall of the host housing on both sides, and a first slot is provided at one end of the wings away from the mounting base; a locking plate extending inwardly is provided at the bottom of the first slot, a locking slot is provided on the locking plate, and connecting side strips are provided on both sides of the lock slot; a first hook is provided at one end of the first slot away from the wings;

[0016] A through first mounting hole is formed on the mounting seat and is located beside the positioning groove;

[0017] A locking seat is provided between the first card slot of the first mounting bracket and the first card slot of the second mounting bracket, and a locking seat is provided between the first card slots arranged opposite to each other. Latch pins corresponding to the lock slots are provided at both ends of the locking seat, and the latch pins are inserted through the lock slots.

[0018] Side clamps are provided on both sides of the locking seat, and the bottom surface of the locking seat and the side clamps form a card slot; a second card slot that matches the corresponding side strip is opened between the side clamp and the latch, and the side strip is embedded in the second card slot, and the side clamps on both sides of the locking seat embed the lock plate in the locking seat card slot, and a through screw hole is opened on the bottom surface of the locking seat.

[0019] Furthermore, in some embodiments, a card seat is provided on the outer wall of the host housing and matches the first card slot. The card seat is a long slide rail seat. A second hook is provided on one side of the card seat and matches the first hook. The first hook and the second hook are locked with each other. A slot is provided on the card seat and matches the latch. The latch passes through the lock slot and is inserted into the slot. The side of the card seat away from the second hook is tightly arranged on the side wall of the first card slot near the wing.

[0020] A nut clamping hole is provided on the base, which is vertically matched with the screw hole. The opening of the nut clamping hole is set on the side away from the second hook. A nut is embedded in the nut clamping hole. The side of the nut is tightly set on the inner wall of the nut clamping hole. The bottom end of the nut clamping hole is set with an angle that is the same as the angle of the top end of the nut. The end of the screw is locked on the nut after passing through the screw hole.

[0021] Furthermore, in some embodiments, a second inner drum ring is provided in the main housing near one end of the second air duct, the cross section of the second inner drum ring is an arc-shaped, the end of the second inner drum ring near the second air duct is convex inward, and the end of the second inner drum ring away from the second air duct is gradually contracted to the inner wall of the main housing;

[0022] The tangent point of the circumference of the second inner drum ring at one end facing the supercharged cover gradually expands in an arc shape, and the end of the second inner drum ring facing the supercharged cover is obliquely arranged on the inner wall of the main engine housing;

[0023] The tangent point of the first inner drum ring's circumference gradually expands in an arc shape at one end of the ring close to the main body shell. The first inner drum ring is obliquely arranged on the inner wall of the boost cover at one end facing the main body shell. The boost cover and the first inner drum ring are integrally injection molded.

[0024] Furthermore, in some embodiments, the end of the first inner drum ring away from the main body housing is closed, the transverse section of the first inner drum ring is a closed structure, and the cross-sectional structure of the end of the first inner drum ring away from the main body housing is a closed arc;

[0025] A semicircular fan seat is provided in the boost cover, and a number of evenly distributed fan blades are provided on the semicircular fan seat. The side of the fan blade away from the semicircular fan seat is provided with a curved arc that matches the arc shape of the first inner drum ring. The outer end of the fan blade is an oblique arc shape, and the front end radius of the fan blade (the distance from the outer edge of the fan blade to the center of the semicircular fan seat) is smaller than the rear end radius of the fan blade;

[0026] A pressurizing net is provided at one end of the first air guide cover away from the main engine housing. The pressurizing net is composed of a number of scattering guide plates. The first air guide cover and the pressurizing net are integrally injection-molded.

[0027] A pressurizing net is provided at one end of the second air guide cover away from the main engine housing. The pressurizing net is composed of a number of scattering air guide plates. The second air guide cover and the pressurizing net are integrally injection-molded.

[0028] Furthermore, in some embodiments, a host base is provided in the host housing near a port of the second air deflector, and the host base is coaxially arranged in an opening at one end of the host housing near the second air deflector; there are also a plurality of guide wings circumferentially distributed between the host base and the inner wall of the host housing, the guide wings are axially arranged in the host housing, and the host housing and the second inner drum ring, the host base, and the guide wings are integrally injection molded.

[0029] Furthermore, in some embodiments, a plurality of host mounting posts facing the first air duct are provided in the host base, and a set of matching alignment plates are provided between adjacent host mounting posts. The alignment plates are provided on the host base, and the top ends of the alignment plates away from the host base protrude (are higher) than the top ends of the host mounting posts.

[0030] The host base is provided with a fan host assembly, and the fan host assembly is assembled and arranged on the host base as a whole;

[0031] The fan host assembly includes a host fixing frame, a motor seat is provided on a side of the host fixing frame facing the first air guide cover, and the host fixing frame is fixed to the host mounting column by screws;

[0032] A coaxially arranged motor is provided on the motor seat, a rotating shaft is arranged in the motor for rotation, a semicircular fan seat is provided at one end of the rotating shaft away from the motor seat, and a plurality of evenly distributed fan blades are provided on the outer side of the semicircular fan seat.

[0033] Furthermore, in some embodiments, both sides of the motor mount and the host fixing frame are provided with alignment slots corresponding to the alignment card plates, the alignment slots of the motor mount and the host fixing frame are embedded in adjacent alignment card plates, and the host fixing frame and the motor mount are locked on the host mounting column;

[0034] A lead hole is provided on the side wall of the main body shell, a wire groove is provided between the lead hole and the main body base, and the wire groove is connected with the inner cavity of the main body base.

[0035] The present invention uses a first inner drum ring to lift the airflow near the fan's casing wall, compressing the high-speed airflow and entraining it into the fan blades, thereby increasing the fan's air intake. A second inner drum ring further compresses the airflow near the casing wall, increasing the air pressure at the outlet. The high-pressure duct fan provided by the present invention can overcome the low air pressure problem of existing diagonal flow duct fans, thereby increasing the fan's air intake.

[0036] The oblique flow duct fan provided by the present invention can improve the problem of inconvenient installation of oblique flow duct fans in the prior art. It adopts a slide rail installation structure, which makes installation convenient, easy to maintain and disassemble, and can be locked firmly after installation. Its structural design is reasonable and practical.

[0037] Furthermore, the oblique flow duct fan provided by the present invention realizes the convenient installation of the main unit (core component) as a whole, allowing the main unit (core component) to be aligned and snap-fitted into the fan housing as a whole. The assembly process has sufficient operating space, so that the main unit (as a whole) can be conveniently and accurately installed on the main unit base. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 A perspective view of an embodiment of the present invention;

[0039] Figure 2 This is an exploded schematic diagram of the mounting bracket portion of an embodiment of the present invention;

[0040] Figure 3 This is a schematic diagram of the assembly of the mounting frame portion of an embodiment of the present invention;

[0041] Figure 4 Schematic cross-sectional view of the locking seat portion of an embodiment of the present invention;

[0042] Figure 5 This is a schematic structural diagram of the mounting frame portion of an embodiment of the present invention;

[0043] Figure 6 This is a cross-sectional structural diagram of the card holder portion according to an embodiment of the present invention;

[0044] Figure 7 Schematic diagram of the card holder portion from multiple angles according to an embodiment of the present invention;

[0045] Figure 8 Schematic diagram of an air duct according to an embodiment of the present invention;

[0046] Figure 9 Schematic cross-sectional view of the housing of the host computer according to an embodiment of the present invention;

[0047] Figure 10 This is a schematic structural diagram of the housing of a host computer according to an embodiment of the present invention;

[0048] Figure 11This is a schematic diagram of the assembly of a pressurized cover according to an embodiment of the present invention;

[0049] Figure 12 Schematic diagram of the structure of an embodiment of the present invention;

[0050] Figure 13 Schematic cross-sectional view of the base portion of the host according to an embodiment of the present invention;

[0051] Figure 14 This is a schematic diagram of the assembly of a host computer according to an embodiment of the present invention;

[0052] Figure 15 This is a schematic diagram of the alignment of the card slot portion according to an embodiment of the present invention;

[0053] Figure 16 It is a structural schematic diagram of the alignment card part of an embodiment of the present invention. DETAILED DESCRIPTION

[0054] In order to further understand the features, technical means, specific objectives and functions achieved by the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0055] See also Figure 1 , Figure 1 The three-dimensional structure of the product of this embodiment can be observed in the figure. This embodiment includes a main body housing 31, with a first air deflector 32 and a second air deflector 33 respectively provided at both ends. A pressurization net 35 is provided on the outer ends of the first air deflector 32 and the second air deflector 33. A semi-enclosed set of first and second mounting frames 10, 11 are provided on the outside of the main body housing 31. The first and second mounting frames 10, 11 are arranged in a corresponding manner. The middle portions of the first and second mounting frames 10, 11 are provided with an outwardly flat mounting seat 12. The outer wall of the main body housing 31 is provided with a snap-on (fixed) seat 34 for snapping (securing) the ends of the first and second mounting frames 10, 11.

[0056] A first mounting bracket 10 and a second mounting bracket 11 are provided on the outer wall of the main housing 31 and are opposite to each other.

[0057] Furthermore, in one embodiment of the present application, the first mounting bracket 10 includes a mounting base 12. Flap 14 extending outwardly and covering the outer wall of the main body housing 31 is provided on both sides of the mounting base 12. A positioning groove 29 is defined on the outer surface of the mounting base 12. The (inward) opening of the positioning groove 29 faces the second mounting bracket 11 disposed opposite thereto. A second mounting hole 51 is defined through the positioning groove 29. A recessed (or through-going) limiting groove 52 is defined in the positioning groove 29.

[0058] The mounting base 12 is provided with an inwardly extending positioning plate 28, which is located beside the (inwardly facing) opening of the positioning slot 29. The extending protrusion of the positioning plate 28 faces the second mounting bracket 11 disposed opposite thereto. The positioning plate 28 is provided with a through-going third mounting hole 54, and the inner bottom of the positioning plate 28 is provided with a raised stop block 53.

[0059] A through first mounting hole 13 is defined in the mounting seat 12 . The first mounting hole 13 is located beside the positioning slot 29 .

[0060] Furthermore, in one embodiment of the present application, the second mounting bracket 11 has the same structure as the first mounting bracket 10 , and the second mounting bracket 11 is matched with the first mounting bracket 10 and is correspondingly arranged. The structure of the second mounting bracket 11 is equivalent to rotating the first mounting bracket 10 180°.

[0061] Furthermore, in one embodiment of the present application, the mounting base 12 of the second mounting frame 11 has a structure corresponding to (the same as) the mounting base 12 of the first mounting frame 10. The mounting base 12 of the second mounting frame 11 is matched and correspondingly arranged with the mounting base 12 of the first mounting frame 10. The structure of the mounting base 12 of the second mounting frame 11 is equivalent to rotating the mounting base 12 of the first mounting frame 10 by 180° (relative matching).

[0062] Furthermore, the positioning plate 28 of the second mounting frame 11 has a structure corresponding to (the same as) the positioning plate 28 of the first mounting frame 10. The positioning plate 28 of the second mounting frame 11 is staggered with the positioning plate 28 of the first mounting frame 10. The structure of the positioning plate 28 of the second mounting frame 11 is equivalent to rotating the positioning plate 28 of the first mounting frame 10 180° (staggered relative).

[0063] Furthermore, in one embodiment of the present application, the positioning plate 28 of the first mounting frame 10 is inserted into the positioning slot 29 of the second mounting frame 11, the third mounting hole 54 in the positioning plate 28 on the first mounting frame 10 is matched with the second mounting hole 51 in the positioning slot 29 on the second mounting frame 11, and the limit block 53 on the positioning plate 28 in the first mounting frame 10 is matched with the limit slot 52 on the positioning slot 29 in the second mounting frame 11.

[0064] Furthermore, in one embodiment of the present application, a first card slot 15 is provided at the end of the protective wing 14 extending outward from both sides of the mounting seat 12 and covering the outer wall of the main body shell 31. In other words, the first card slot 15 is provided at the end of the protective wing 14 away from the mounting seat 12; the bottom (bottom surface) of the first card slot 15 is provided with a locking plate 16 extending inward. In other words, the bottom of the first card slot 15 is provided with a locking plate 16 extending toward the positioning plate 28, and a through locking slot 17 is provided on the locking plate 16, and side strips 19 of the connecting portion are provided on both sides of the lock slot 17; a first hook 18 is provided at the end of the first card slot 15 away from the protective wing 14.

[0065] For further information, see Appendix Figure 3 As shown, Figure 3 The figure shows the assembly schematic structure of the mounting frame part of the diagonal flow duct fan of the present application; a locking seat 21 is provided between the first card slot 15 of the first mounting frame 10 and the first card slot 15 of the second mounting frame 11. In other words, a locking seat 21 is provided between the oppositely arranged first card slots 15, and latches 23 corresponding to the locking slots 17 are provided at both ends of the locking seat 21, and the latches 23 are inserted through the locking slots 17; side clamping plates 22 are provided on both sides of the locking seat 21, and the bottom surface of the locking seat 21 and the side clamping plates 22 form a card slot; a second card slot 24 matching the corresponding side strip 19 is provided between the side clamping plates 22 and the latch 23, and the side strip 19 is embedded in the second card slot 24, and the side clamping plates 22 of the locking seat 21 embed (fix) the lock plate 16 in the card slot of the locking seat 21, and a through screw hole 25 is provided on the bottom surface of the locking seat 21.

[0066] The outer wall of the main body shell 31 is provided with a card seat 34 that matches the first card slot 15, and a second hook 55 that matches the first hook 18 is provided on one side of the card seat 34, and the first hook 18 and the second hook 55 are arranged to be locked with each other; a slot 56 that matches the pin 23 is opened on the card seat 34, and the pin 23 passes through the lock slot 17 and is inserted into the slot 56.

[0067] Furthermore, in one embodiment of the present application, a nut clamping hole 57 is provided on the clamping base 34. Further, a nut clamping hole 57 is provided on the clamping base 34 and is vertically matched with the screw hole 25. The opening of the nut clamping hole 57 is set at an end away from the second hook 55. A nut 27 is embedded in the nut clamping hole 57. The (parallel) side surfaces of the (hexagonal) nut 27 are tightly set on the inner wall of the nut clamping hole 57. The bottom end of the nut clamping hole 57 is set at the same angle as the (hexagonal) top end of the nut 27. The end of the screw 26 is locked on the nut 27 after passing through the screw hole 25.

[0068] During use, after the first mounting bracket 10 and the second mounting bracket 11 are locked and docked with each other, the outer plane of the mounting base 12 faces the installation surface of the building, and the screws are passed through the first mounting hole 13, the second mounting hole 51, and the third mounting hole 54 to lock the mounting base 12 on the building surface. Then, the card seat 34 (slide rail seat) on the main body shell 31 is slid into the first card slot 15 at the end of the wing 14 (first mounting bracket 10, second mounting bracket 11), and the nut 27 is embedded in the nut card hole 57. The pin 23 of the locking base 21 passes through the lock slot 17 and is inserted into the slot 56. The screw 26 passes through the screw hole 25 and is locked on the nut 27. The fan installation is completed, and the installation structure is stable and reliable.

[0069] See attached Figure 9 As shown, Figure 9The relevant structure of the host housing 31 of this embodiment can be observed in the figure. This embodiment includes the host housing 31, and the outer wall of the host housing 31 is provided with a first mounting bracket 10 and a second mounting bracket 11. The middle of the first mounting bracket 10 and the second mounting bracket 11 is provided with an outwardly flat mounting seat 12. The air inlet end of the host housing 31 is provided with a first air deflector 32, and the air outlet end of the host housing 31 is provided with a second air deflector 33.

[0070] A boost cover 36 is embedded in one end of the main housing 31 close to the first air guide cover 32, and the boost cover 36 is tightly embedded in the inner wall of the main housing 31;

[0071] A first inner drum ring 37 is provided at the end of the boost cover 36 away from the main body shell 31. The first inner drum ring 37 is arc-shaped. The first inner drum ring 37 (boost arc ring) protrudes inward at the end away from the main body shell 31, and the ring (periphery) of the first inner drum ring 37 close to the main body shell 31 gradually shrinks in an arc shape to the inner wall of the boost cover 36; in other words, the ring (end) of the first inner drum ring 37 toward the end of the main body shell 31 gradually expands in an arc shape, and the first inner drum ring 37 is obliquely arranged on the inner wall of the boost cover 36 toward the end of the main body shell 31, and the boost cover 36 and the first inner drum ring 37 are integrally injection molded.

[0072] Furthermore, in one embodiment of the present application, a second inner drum ring 41 is provided in the main housing 31 near one end of the second air duct 33, and the second inner drum ring 41 is arc-shaped. The end of the second inner drum ring 41 near the second air duct 33 protrudes inward, and the end ring (end) of the second inner drum ring 41 away from the second air duct 33 gradually shrinks in an arc shape to the inner wall of the main housing 31; in other words, the end ring (periphery) of the second inner drum ring 41 toward the boost cover 36 gradually expands in an arc shape, and the end of the second inner drum ring 41 toward the boost cover 36 is obliquely arranged on the inner wall of the main housing 31.

[0073] For further information, see Appendix Figure 11 As shown, Figure 11 The specific structure of the end portion of the first inner drum ring 37 of this embodiment is shown in the figure; the end of the first inner drum ring 37 away from the main body shell 31 is closed, and further, the transverse section of the first inner drum ring 37 is a closed (closed) structure, and the cross-sectional structure of the first inner drum ring 37 away from the main body shell 31 is a closed arc.

[0074] A main unit base 42 is provided in an end of the main unit housing 31 near the second air guide cover 33. The main unit base 42 is coaxially arranged in the opening of the main unit housing 31 near the second air guide cover 33, and there are also a number of guide wings 43 circumferentially distributed between the main unit base 42 and the inner wall of the main unit housing 31. The guide wings 43 are axially arranged in the main unit housing 31. The main unit housing 31, the second inner drum ring 41, the main unit base 42, and the guide wings 43 are integrally injection molded by plastic.

[0075] Furthermore, in one embodiment of the present application, a semicircular fan seat 38 is provided in the boost cover 36, and a number of evenly distributed fan blades 39 are provided on the semicircular fan seat 38. The fan blade 39 is provided with a curved arc on the side (outer side) away from the semicircular fan seat 38, which matches the arc shape of the first inner drum ring 37 (spacing); in other words, the outer end of the fan blade 39 is an oblique arc, and the front end radius of the fan blade 39 (the distance between the outer edge of the blade and the center of the semicircular fan seat 38) is smaller than the rear end radius of the fan blade 39.

[0076] Furthermore, in one embodiment of the present application, a first air deflector 32 is provided with a pressurized net 35 at one end away from the main housing 31, and the pressurized net 35 is composed of a number of scattering deflectors. The first air deflector 32 and the pressurized net 35 are integrally molded by plastic injection molding; a second air deflector 33 is provided with a pressurized net 35 at one end away from the main housing 31, and the pressurized net 35 is composed of a number of scattering deflectors. The second air deflector 33 and the pressurized net 35 are integrally molded by plastic injection molding.

[0077] Furthermore, in one embodiment of the present application, the diagonal flow duct fan is equipped with a first air deflector 32 mounted on the outside of the air inlet end of the main unit housing 31, and a second air deflector 33 mounted on the outside of the air outlet end of the main unit housing 31. The first air deflector 32 and the plenum screen 35 (a combination of scattering deflectors) are integrally injection molded from plastic. A plenum screen 36, which mates with the air inlet end of the main unit housing 31, is mounted within the air inlet end housing of the main unit housing 31. A main unit base 42 is coaxially disposed within a port of the main unit housing 31, and air deflectors 43 are circumferentially distributed between the main unit base 42 and the inner wall of the main unit housing 31.

[0078] The first inner drum ring 37 lifts the airflow close to the shell wall, compressing the high-speed airflow and rolling it into the fan blades, thereby increasing the fan's air intake; the second inner drum ring 41 squeezes the airflow close to the shell wall again, achieving the effect of increasing the air output pressure.

[0079] Furthermore, in one embodiment of the present application, a first mounting bracket 10 and a second mounting bracket 11 are provided on the outside of the main housing 31, thereby forming the overall shape of the fan. A coaxially arranged main housing base 42 is provided in the main housing 31 near a port of the second air guide cover 33. The main housing base 42 is bowl-shaped (cup-shaped) with a circular bottom. A separation distance (air guide channel) is provided between the main housing base 42 and the inner wall of the main housing 31. A plurality of guide wings 43 are circumferentially distributed on the main housing base 42 between the separation distances. The guide wings 43 are axially arranged in the main housing 31. The main housing base 42 is fixed to the main housing 31 via the guide wings 43. The main housing 31, the main housing base 42, and the guide wings 43 are integrally injection molded.

[0080] Several mainframe mounting posts 44 are provided in the mainframe base 42, facing the first air duct 32. Preferably, a mainframe mounting post 44 is provided at each of the four corners of the mainframe base 42, i.e., four mainframe mounting posts 44 are provided in the mainframe base 42. Alignment plates 45 are provided on the sides of the mainframe mounting posts 44. Furthermore, a set of symmetrically matched alignment plates 45 are provided between two adjacent mainframe mounting posts 44. The alignment plates 45 are provided on the mainframe base 42, with the top end of the alignment plates 45, which is away from the top end of the mainframe base 42, protruding above (higher than) the top end of the mainframe mounting posts 44.

[0081] A wire hole 47 is formed on the side wall of the main body housing 31. A wire groove 46 is formed between the wire hole 47 and the main body base 42. The wire groove 46 is connected to the inner cavity of the main body base 42. The main body base 42 is provided with a fan main body assembly, which is assembled and mounted on the main body base 42.

[0082] Furthermore, in one embodiment of the present application, the fan host assembly includes a host fixing frame 48, and a motor seat 49 is provided on the side of the host fixing frame 48 facing the first air duct 32, and the host fixing frame 48 is fixed on the host mounting column 44 by screws; a coaxially arranged motor 58 is provided on the motor seat 49, and a rotating shaft 59 rotatably connected to the motor 58 is provided, that is, a rotating shaft 59 is provided in the motor 58, and a semicircular fan seat 38 is provided at the end of the rotating shaft 59 away from the motor seat 49, and a plurality of evenly distributed fan blades 39 are provided on the outer side of the semicircular fan seat 38.

[0083] Furthermore, in one embodiment of the present application, a circuit board 50 is provided on one side of the host fixing frame 48 close to the host base 42, and a plurality of electrical components 40 are provided on the side of the circuit board 50 away from the host fixing frame 48. The electrical components 40 include switching power supplies, sensors and other components. The electrical components 40 on the circuit board 50 are arranged in the cavity of the host base 42.

[0084] The motor seat 49 (disk body) and the main frame 48 (disk body) are provided with alignment slots 30 on both sides that match the alignment card plate 45. The alignment slots 30 of the motor seat 49 and the main frame 48 are embedded in the adjacent alignment card plates 45. The main frame 48 and the motor seat 49 are locked (with screws) on the main mounting column 44.

[0085] Furthermore, in one embodiment of the present application, the present application includes a motor 58 coaxially arranged on a motor seat 49, a rotating shaft 59 rotatably connected to the motor 58, a main body base 42 coaxially arranged in a port of the main body housing 31, and guide wings 43 circumferentially distributed between the main body base 42 and the inner wall of the main body housing 31.

[0086] During production, one side of the main frame 48 is assembled with the circuit board 50 and the electrical component 40 assembly (the electrical component 40 is arranged on the side of the circuit board 50 away from the main frame 48), and the other side of the main frame 48 is assembled with the motor seat 49, and the motor 58 and the rotating shaft 59 are assembled on the motor seat 49. At this time, the assembly of the fan main assembly is completed; then the fan main assembly is aligned between the alignment slot 30 and the alignment card plate 45, and the alignment slot 30 of the main frame 48 and the motor seat 49 is embedded in the adjacent alignment card plate 45, and then the motor seat 49 and the main frame 48 are locked and set on the main mounting column 44 with screws to complete the assembly of the fan main assembly on the main base 42. The assembly process has sufficient operating space; finally, the semicircular fan seat 38 is placed on the top of the rotating shaft 59, and the semicircular fan seat 38 is fixed to the rotating shaft 59 with a nut to complete the assembly of the main unit in the main housing 31.

[0087] The above-described embodiment merely represents one embodiment of the present invention. While the description is relatively specific and detailed, it should not be construed as limiting the scope of the present invention. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the spirit of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be determined by the appended claims.

Claims

1. A diagonal flow duct fan, comprising: A host housing (31), wherein a first air guide cover (32) and a second air guide cover (33) are respectively provided at both ends of the host housing (31); the host housing (31) is characterized in that a semi-enclosed set of a first mounting frame (10) and a second mounting frame (11) are provided on the outside, the first mounting frame (10) and the second mounting frame (11) are matched and correspondingly arranged, a mounting seat (12) which is flat outward is provided in the middle of the first mounting frame (10) and the second mounting frame (11), and a clamping seat (34) for clamping the ends of the first mounting frame (10) and the second mounting frame (11) is provided on the outer wall of the host housing (31); A boost cover (36) is embedded in one end of the main engine housing (31) close to the first air guide cover (32), and the boost cover (36) is tightly embedded in the inner wall of the main engine housing (31). A first inner drum ring (37) is provided at one end of the boost cover (36) away from the main engine housing (31). The cross section of the first inner drum ring (37) is an arc-shaped, and the end of the first inner drum ring (37) away from the main engine housing (31) is convex inwardly. The first inner drum ring (37) gradually shrinks to the inner wall of the boost cover (36) toward one end of the main engine housing (31); A coaxially arranged main unit base (42) is provided in a main unit housing (31) near a port of the second flow guide cover (33). The main unit base (42) is a bowl-shaped unit with an arc bottom. A separation distance is provided between the main unit base (42) and the inner wall of the main unit housing (31). A plurality of flow guide wings (43) are circumferentially distributed on the main unit base (42) between the separation distances between the main unit base (42) and the inner wall of the main unit housing (31). The flow guide wings (43) are axially arranged in the main unit housing (31). The main unit base (42) is arranged in the main unit housing (31) through the flow guide wings (43). The outer wall of the main housing (31) is provided with a first mounting frame (10) and a second mounting frame (11) which are arranged opposite to each other; the first mounting frame (10) includes a mounting seat (12), and both sides of the mounting seat (12) are provided with wings (14) extending outwards and covering the outer wall of the main housing (31); A first card slot (15) is provided at one end of the protective wing (14) away from the mounting seat (12); a locking plate (16) extending inward is provided at the bottom of the first card slot (15); a through locking slot (17) is provided on the locking plate (16); and connecting side strips (19) are provided on both sides of the locking slot (17); a first hook (18) is provided at one end of the first card slot (15) away from the protective wing (14); The outer wall of the host housing (31) is provided with a card seat (34) that matches the first card slot (15), the card seat (34) is a long slide rail seat, and one side of the card seat (34) is provided with a second buckle (55) that matches the first buckle (18), and the first buckle (18) and the second buckle (55) are buckled with each other.

2. The oblique flow duct fan according to claim 1, characterized in that: A positioning groove (29) is provided on the outer surface of the mounting seat (12), the opening of the positioning groove (29) faces the second mounting frame (11) arranged opposite thereto, a through second mounting hole (51) is provided in the positioning groove (29), and a recessed limiting groove (52) is provided in the positioning groove (29); The mounting seat (12) is provided with a positioning plate (28) extending inward, the positioning plate (28) is located beside the opening of the positioning groove (29), the extended protrusion of the positioning plate (28) is directed toward the second mounting frame (11) arranged opposite thereto, and the positioning plate (28) is provided with a through third mounting hole (54); The second mounting frame (11) has a structure symmetrical to the first mounting frame (10), the mounting seat (12) of the second mounting frame (11) has a structure matching the mounting seat (12) of the first mounting frame (10), the positioning plate (28) of the second mounting frame (11) and the positioning plate (28) of the first mounting frame (10) are staggered, and the inner bottom of the positioning plate (28) is provided with a raised limiting block (53); The positioning plate (28) of the first mounting frame (10) is inserted into the positioning groove (29) of the second mounting frame (11), the third mounting hole (54) in the positioning plate (28) on the first mounting frame (10) and the second mounting hole (51) in the positioning groove (29) on the second mounting frame (11) are matched and correspondingly arranged, and the limiting block (53) on the positioning plate (28) in the first mounting frame (10) and the limiting groove (52) on the positioning groove (29) in the second mounting frame (11) are matched and correspondingly arranged.

3. The oblique flow duct fan according to claim 1, characterized in that: The mounting seat (12) is provided with a through first mounting hole (13), and the first mounting hole (13) is located beside the positioning groove (29); A locking seat (21) is provided between the first card slot (15) of the first mounting frame (10) and the first card slot (15) of the second mounting frame (11); a locking seat (21) is provided between the first card slots (15) arranged opposite to each other; latches (23) corresponding to the locking slots (17) are provided at both ends of the locking seat (21); the latches (23) penetrate through the locking slots (17); Side card plates (22) are provided on both sides of the locking seat (21), and the bottom surface of the locking seat (21) and the side card plates (22) form a card slot; a second card slot (24) matching the corresponding side strip (19) is provided between the side card plates (22) and the latch (23), and the side strip (19) is embedded in the second card slot (24). The side card plates (22) on both sides of the locking seat (21) embed the lock plate (16) in the card slot of the locking seat (21), and a through screw hole (25) is provided on the bottom surface of the locking seat (21).

4. The oblique flow duct fan according to claim 1, characterized in that: The card base (34) is provided with a slot (56) that matches the latch (23), and the latch (23) is inserted into the slot (56) after passing through the lock slot (17); the side of the card base (34) away from the second hook (55) is tightly arranged on the side wall of the first card slot (15) close to the wing (14); A nut clamping hole (57) vertically matched with the screw hole (25) is provided on the base (34), the opening of the nut clamping hole (57) is set on the side away from the second hook (55), a nut (27) is embedded in the nut clamping hole (57), the side of the nut (27) is tightly set on the inner wall of the nut clamping hole (57), the bottom end of the nut clamping hole (57) is provided with an angle identical to the angle of the top end of the nut (27), and the end of the screw (26) is locked on the nut (27) after passing through the screw hole (25).

5. The oblique flow duct fan according to claim 1, characterized in that: A second inner drum ring (41) is provided in the main housing (31) at one end close to the second air guide cover (33). The cross section of the second inner drum ring (41) is an arc-shaped. The end of the second inner drum ring (41) close to the second air guide cover (33) is convex inward, and the end of the second inner drum ring (41) away from the second air guide cover (33) is gradually contracted to the inner wall of the main housing (31). The tangent point of the circumference of the second inner drum ring (41) at one end facing the boost cover (36) gradually expands in an arc shape, and the end of the second inner drum ring (41) facing the boost cover (36) is obliquely arranged on the inner wall of the main housing (31); The tangent point of the circumference of the first inner drum ring (37) at one end close to the main body shell (31) gradually expands in an arc shape, and the end of the first inner drum ring (37) facing the main body shell (31) is obliquely arranged on the inner wall of the boost cover (36), and the boost cover (36) and the first inner drum ring (37) are integrally injection molded.

6. The oblique flow duct fan according to claim 1, characterized in that: The end of the first inner drum ring (37) away from the main body housing (31) is closed, the transverse section of the first inner drum ring (37) is a closed structure, and the cross-sectional structure of the end of the first inner drum ring (37) away from the main body housing (31) is a closed arc; A semicircular fan seat (38) is provided in the boost cover (36), and a plurality of evenly distributed fan blades (39) are provided on the semicircular fan seat (38). A curved arc corresponding to the arc shape of the first inner drum ring (37) is provided on the side of the fan blade (39) away from the semicircular fan seat (38). The outer end of the fan blade (39) is an oblique arc shape, and the front end radius of the fan blade (39) is smaller than the rear end radius of the fan blade (39); A pressurizing net (35) is provided at one end of the first air guide cover (32) away from the main housing (31), the pressurizing net (35) being composed of a plurality of scattering air guide plates, and the first air guide cover (32) and the pressurizing net (35) are integrally injection-molded; A pressurizing net (35) is provided at one end of the second air guide cover (33) away from the main housing (31). The pressurizing net (35) is composed of a plurality of scattering air guide plates. The second air guide cover (33) and the pressurizing net (35) are integrally injection-molded.

7. The oblique flow duct fan according to claim 1, characterized in that: The host housing (31) is provided with a host base (42) in a port near the second air guide cover (33). The host base (42) is coaxially arranged in an opening at one end of the host housing (31) near the second air guide cover (33). The host base (42) also includes a plurality of air guide wings (43) circumferentially distributed between the host base (42) and the inner wall of the host housing (31). The air guide wings (43) are axially arranged in the host housing (31). The host housing (31), the second inner drum ring (41), the host base (42), and the air guide wings (43) are integrally injection molded.

8. The oblique flow duct fan according to claim 7, characterized in that: A plurality of host mounting posts (44) facing the first air guide cover (32) are provided in the host base (42), and a group of matching alignment cards (45) are provided between adjacent host mounting posts (44). The alignment cards (45) are arranged on the host base (42), and the top end of the alignment cards (45) away from the host base (42) protrudes from the top end of the host mounting post (44); A fan host assembly is provided on the host base (42), and the fan host assembly is assembled and arranged on the host base (42); The fan host assembly includes a host fixing frame (48), a motor seat (49) is provided on a side of the host fixing frame (48) facing the first air guide cover (32), and the host fixing frame (48) is fixed on the host mounting column (44) by screws; A coaxially arranged motor (58) is provided on the motor seat (49), a rotating shaft (59) is arranged in the motor (58) and is rotatably connected, a semicircular fan seat (38) is provided at one end of the rotating shaft (59) away from the motor seat (49), and a plurality of evenly distributed fan blades (39) are provided on the outer side of the semicircular fan seat (38).

9. The oblique flow duct fan according to claim 8, characterized in that: The motor seat (49) and the host fixing frame (48) are provided with alignment slots (30) corresponding to the alignment card plate (45) on both sides. The alignment slots (30) of the motor seat (49) and the host fixing frame (48) are embedded in the adjacent alignment card plates (45). The host fixing frame (48) and the motor seat (49) are locked on the host mounting column (44). A lead hole (47) is provided on the side wall of the main housing (31), a lead groove (46) is provided between the lead hole (47) and the main base (42), and the lead groove (46) is connected to the inner cavity of the main base (42).

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