Oblique flow pipeline fan

Abstract

The utility model provides an oblique flow pipeline fan. The oblique flow pipeline fan comprises a shell, a motor, a wind wheel and a silencing ring, an air duct is formed in the shell and is provided with an air inlet and an air outlet; the motor is arranged in the air duct and is in driving connection with the wind wheel, the silencing ring is arranged on the inner wall of the air duct in a mode of surrounding the air outlet, the silencing ring is arranged on the side, facing the air outlet, of the wind wheel, and a plurality of silencing holes are evenly formed in the silencing ring. Compared with the prior art, the oblique flow pipeline fan has the advantages that the damping and noise reduction effects can be realized through the silencing holes, so that the user experience is improved; through the waterproof design of the sealing ring and the junction box, the overall waterproof performance is good, and the situation that rainwater permeates into the shell or the junction box to damage the machine after the external environment is caught in rain is prevented; due to the design of the check valve, mosquitoes can be effectively prevented from entering a room; the shell can be directly and rapidly installed through a threaded piece, and complex operation is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, and particularly relates to an axial-flow duct fan. Background Art

[0002] In some high-rise buildings or shopping malls, ducts are often needed to transport air. During the long-distance transportation process, the pressure often drops. When reaching the destination, the air volume is greatly reduced. At the same time, the load of the fan at the far end is relatively large, the power consumption is high, and the failure rate is high, which is not suitable for long-distance transportation. Therefore, an axial-flow fan needs to be set to boost the air pressure to solve this dilemma. Therefore, the axial-flow duct fan is an essential ventilation product in modern living places, which can effectively adjust the air, remove moisture, dust, and odor, and make the indoor air fresh and clean.

[0003] The existing axial-flow duct fans have relatively high noise due to the vibration of the outer shell caused by the air flow. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the defects and deficiencies in the prior art and provide an axial-flow duct fan.

[0005] An embodiment of the utility model provides an axial-flow duct fan, which includes: a housing, a motor, a wind wheel, and a silencing ring;

[0006] A duct is formed inside the housing, and the duct has an air inlet and an air outlet;

[0007] The motor is arranged inside the duct and is drivingly connected to the wind wheel. The silencing ring is arranged on the inner wall of the duct in a manner of surrounding the air outlet. The silencing ring is arranged on the side of the wind wheel facing the air outlet, and a plurality of silencing holes are uniformly arranged on the silencing ring.

[0008] In some optional embodiments, a check valve is arranged at the air outlet, and the check valve is rotationally matched with the housing.

[0009] In some optional embodiments, the housing includes a front seat, a rear seat, and a sealing ring. The front seat and the rear seat together form the duct, and the sealing ring is arranged between the front seat and the rear seat.

[0010] In some optional embodiments, the axial-flow duct fan further includes a motor fixing base. The motor fixing base is arranged inside the duct. The motor fixing base is provided with an assembly part and a plurality of ventilation channels surrounding the assembly part. The motor is installed on the assembly part. The wind wheel is located on the side of the motor fixing base facing the air inlet, and the silencing ring is located on the side of the motor fixing base facing the air outlet.

[0011] In some alternative embodiments, the housing includes a front seat, a rear seat and a sealing ring. The front seat and the rear seat together surround and form the air duct. The air inlet is located on the front seat, and the air outlet is located on the rear seat. The motor fixing base presses the sound insulation ring into the rear seat, and then the motor fixing base is fixedly connected to the rear seat.

[0012] In some alternative embodiments, an installation seat and a plurality of air guide plates are arranged on the inner side of the sound insulation ring. The installation seat is connected to the inner side of the sound insulation ring through the air guide plates, and the plurality of air guide plates are uniformly arranged around the installation seat;

[0013] The motor fixing base presses against the sound insulation ring and the installation seat.

[0014] In some alternative embodiments, the inner diameter of the sound insulation ring gradually decreases in the direction away from the motor fixing base, and the sound insulation holes are within the projection range of the ventilation channel in the extending direction of the air duct.

[0015] In some alternative embodiments, a junction box is arranged on the housing. A storage cavity and wiring terminals located in the storage cavity are arranged in the junction box. The wiring terminals are electrically connected to the motor. A screw lock is arranged on the side of the junction box, and a wiring hole communicating with the inside and outside of the storage cavity is arranged in the screw lock.

[0016] In some alternative embodiments, a box cover and a sealing plate are arranged on the junction box. The storage cavity has an opening. The box cover closes the opening of the storage cavity, and the box cover presses the sealing plate against the periphery of the opening of the storage cavity.

[0017] In some alternative embodiments, a plurality of mounting holes for threaded parts to pass through are arranged on the side of the housing.

[0018] Compared with the prior art, the mixed-flow duct fan of the present invention can achieve the effects of shock absorption and noise reduction through the sound insulation holes, thereby improving the user experience; through the waterproof design of the sealing ring and the junction box, the overall waterproof performance is good, preventing rainwater from seeping into the housing or the junction box after being exposed to rain in the external environment and causing damage to the machine; the design of the check valve can effectively prevent mosquitoes from entering the room; the housing can be directly and quickly installed through threaded parts, reducing complicated operations.

[0019] In order to more clearly understand the present invention, the specific embodiments of the present invention will be described below in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic structural diagram of a mixed-flow duct fan according to an embodiment of the present invention;

[0021] Figure 2 Cross-sectional view of an axial-flow duct fan according to an embodiment of the present utility model;

[0022] Figure 3 First exploded view of an axial-flow duct fan according to an embodiment of the present utility model;

[0023] Figure 4 Second exploded view of an axial-flow duct fan according to an embodiment of the present utility model;

[0024] Figure 5 Partial cross-sectional view of an axial-flow duct fan according to an embodiment of the present utility model.

[0025] Description of reference numerals:

[0026] 10. Housing; 11. Air duct; 111. Air inlet; 112. Air outlet; 113. Check valve; 114. Positioning groove; 12. Front seat; 13. Rear seat; 14. Sealing ring; 15. Motor fixing base; 151. Assembly part; 152. Ventilation channel; 16. Junction box; 161. Storage cavity; 162. Terminal; 163. Screw lock; 164. Wiring hole; 165. Box cover; 166. Sealing plate; 167. Capacitor; 168. Wire clip; 17. Mounting hole; 20. Motor; 30. Impeller; 40. Sound-absorbing ring; 41. Sound-absorbing hole; 42. Mounting seat; 43. Air guide plate. Detailed implementation manners

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model. In the description of the present utility model, unless otherwise specified, "a plurality of" means two or more, and "several" means one or more. In addition, unless otherwise specified, 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 quantity of the indicated technical features.

[0028] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0029] In the description of the present utility model, unless otherwise clearly specified and defined, the terms "installed", "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0030] In the description of the present utility model, the description referring to terms such as "one embodiment", "some optional implementation manners" or "some optional embodiments" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0031] Please refer to Figure 1 and Figure 2 , an embodiment of the present utility model provides an axial-flow duct fan, including: a housing 10, a motor 20, a wind wheel 30 and a silencing ring 40.

[0032] Please refer to Figure 3 , a duct 11 is formed inside the housing 10. The duct 11 has an air inlet 111 and an air outlet 112. The motor 20 is disposed inside the duct 11 and is drivingly connected to the wind wheel 30. The silencing ring 40 is arranged on the inner wall of the duct 11 in a manner surrounding the air outlet 112. The silencing ring 40 is disposed on the side of the wind wheel 30 facing the air outlet 112. A plurality of silencing holes 41 are uniformly arranged on the silencing ring 40. During operation, the motor 20 drives the wind wheel 30 to rotate, causing the air flow to enter the duct 11 from the air inlet 111 and then blow out from the air outlet 112 of the duct 11. The air flow on the inner wall of the duct 11 near the air outlet 112 can flow into the silencing holes 41, disturbing the air flow, thereby preventing the part of the housing 10 near the air outlet 112 from being vibrated by the air flow, and thus achieving the effect of shock absorption and noise reduction.

[0033] In some alternative embodiments, a check valve 113 is provided at the air outlet 112. The check valve 113 is rotationally engaged with the housing. The design of the check valve 113 can effectively prevent mosquitoes from entering the room. The design of the check valve 113 can adopt a wind pressure type or an active type. The wind pressure type check valve 113 can be opened at the air outlet 112 under the push of the air flow. When the motor 20 stops running and there is no air flow to push the check valve 113, the check valve 113 returns to the position of closing the air outlet 112 under the drive of its own gravity. Of course, the check valve 113 can be configured to rotate under the drive of the drive motor 20, so as to close or open the air outlet 112.

[0034] In some alternative embodiments, the housing 10 includes a front seat 12, a rear seat 13 and a sealing ring 14. The front seat 12 and the rear seat 13 together form an air duct 11. The front seat 12 and the rear seat 13, and the sealing ring 14 is arranged between the front seat 12 and the rear seat 13. Structures such as the sound damping ring 40, the motor 20, and the impeller 30 are assembled on the rear seat 13 or the front seat 12, and then the front seat 12 is connected to the rear seat 13, so as to facilitate the installation of the internal structure of the air duct 11. The sealing ring 14 improves the waterproof performance between the front seat 12 and the rear seat 13, avoiding the problem that the diagonal flow duct fan can only be installed indoors and cannot withstand the sun and rain outdoors, and effectively avoiding the situation of internal water ingress and resulting in electric leakage or machine damage after the housing 10 is drenched by rain.

[0035] In order to facilitate the installation of the motor 20, in some alternative embodiments, the diagonal flow duct fan further includes a motor fixing base 15. The motor fixing base 15 is arranged in the air duct 11. The motor fixing base 15 is provided with an assembly part 151 and a plurality of ventilation channels 152 surrounding the assembly part 151. The ventilation channels 152 allow the air flow to pass through. After the air flow enters the air inlet 111, it passes through the ventilation channels 152 and then flows to the air outlet 112. The motor 20 is installed on the assembly part 151, and the impeller 30 is located on the side of the motor fixing base 15 facing the air inlet 111, and the sound damping ring 40 is located on the side of the motor fixing base 15 facing the air outlet 112.

[0036] In some alternative embodiments, the motor fixing base 15 presses the sound damping ring 40 into the rear seat 13, so as to fix the sound damping ring 40, and then the motor fixing base 15 is fixedly connected to the rear seat 13.

[0037] In order to improve the fixing stability of the sound damping ring 40, in some alternative embodiments, a positioning groove 114 is provided on the inner wall of the rear seat 13. When the motor fixing base 15 presses the sound damping ring 40 into the rear seat 13, the side of the sound damping ring 40 away from the motor fixing base 15 extends into the positioning groove 114, and the positioning groove 114 positions the sound damping ring 40 to improve the stability of the sound damping ring 40.

[0038] In some alternative embodiments, a mounting base 42 and a plurality of air guide plates 43 are provided on the inner side of the silencing ring 40. The mounting base 42 is connected to the inner side of the silencing ring 40 through the air guide plates 43. The plurality of air guide plates 43 are uniformly arranged around the mounting base 42. After the air flow passes through the ventilation channel 152, it then passes through the silencing ring 40. The air guide plates 43 can guide the air flow to flow towards the air outlet 112. The motor fixing base 15 presses against the silencing ring 40 and the mounting base 42. The mounting base 42 is positioned by being pressed by the motor fixing base 15, and the silencing ring 40 is pressed by the motor fixing base 15 against the inner wall of the air duct 11, thereby realizing the overall stability of the silencing ring 40, the air guide plates 43 and the mounting base 42, and reducing the vibration of the silencing ring 40, the air guide plates 43 and the mounting base 42. In this embodiment, the motor fixing base 15 presses against the mounting base 42 through the assembly portion 151.

[0039] In some alternative embodiments, the inner diameter of the silencing ring 40 gradually decreases in the direction away from the motor fixing base 15, and the sound absorption holes 41 are within the projection range of the ventilation channel 152 in the extending direction of the air duct 11, so that the air flow blows directly towards the sound absorption holes 41 of the silencing ring 40 after passing through the ventilation channel 152, achieving a better noise reduction effect.

[0040] Please refer to Figure 4 and Figure 5 , in some alternative embodiments, a junction box 16 is provided on the housing 10. A storage cavity 161 and a terminal block 162 located within the storage cavity 161 are provided in the junction box 16. The terminal block 162 is electrically connected to the motor 20. A screw lock 163 is provided on the side of the junction box 16. A wiring hole 164 communicating with the inside and outside of the storage cavity 161 is provided in the screw lock 163. The electric wire passes through the wiring hole 164 and then enters the junction box 16, and then is connected to the terminal block 162 to achieve power connection. The screw lock 163 can be docked with other structures. At this time, since the screw lock 163 is locked with other structures, the risk of liquid entering the junction box 16 from the wiring hole 164 is reduced, which is beneficial to improving the waterproof performance of the junction box 16.

[0041] In some alternative embodiments, a capacitor 167, a circuit board or other electronic devices, etc. can also be provided in the junction box 16. In addition, a wire clip 168 can be provided in the junction box 16, and the wire clip 168 can clamp and fix the electric wire, thereby facilitating the arrangement of the electric wire.

[0042] In some alternative embodiments, a lid 165 and a sealing plate 166 are provided on the junction box 16. The storage cavity 161 has an opening, and the lid 165 closes the opening of the storage cavity 161. The lid 165 presses the sealing plate 166 against the periphery of the opening of the storage cavity 161, and the opening of the storage cavity 161 is sealed by the sealing plate 166, thereby improving the waterproof and airtight performance. The sealing plate 166 can be made of an elastic waterproof plate. In this embodiment, a raised portion surrounding the opening is provided on the junction box 16, and the sealing plate 166 abuts against the end portion of the raised portion and the side of the raised portion away from the opening, thereby improving the waterproof performance.

[0043] In some alternative embodiments, a plurality of mounting holes 17 for threaded members to pass through are provided on the side of the housing 10. When the housing 10 is installed, the explosion screws pass through the mounting holes 17 and then are directly locked and fixed to the installation position, thereby realizing the installation of the housing 10; alternatively, a screw rod is installed at the installation position such as the roof, ceiling, etc., the screw rod passes through the mounting holes 17, and the nut on the screw rod locks and fixes the housing 10, realizing rapid assembly. The overall installation is simple and the operation is convenient.

[0044] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A diagonal flow duct fan, characterized in that: include: Housing, motor, wind wheel and silencer ring; An air duct is formed in the shell, and the air duct has an air inlet and an air outlet; The motor is arranged in the air duct and is drivingly connected to the wind wheel. The silencer ring is arranged on the inner wall of the air duct in a manner of surrounding the air outlet. The silencer ring is arranged on the side of the wind wheel facing the air outlet, and a plurality of silencer holes are evenly arranged on the silencer ring.

2. The oblique flow duct fan according to claim 1, characterized in that: A check valve is provided at the air outlet, and the check valve is rotatably matched with the shell.

3. The oblique flow duct fan according to claim 1, characterized in that: The housing comprises a front seat, a rear seat and a sealing ring. The front seat and the rear seat are surrounded together to form the air duct. The sealing ring is arranged between the front seat and the rear seat.

4. The oblique flow duct fan according to claim 1, characterized in that: It also includes a motor fixing base, which is arranged in the air duct, and is provided with an assembly part and a plurality of ventilation channels surrounding the assembly part. The motor is installed on the assembly part, the wind wheel is located on the side of the motor fixing base facing the air inlet, and the silencer ring is located on the side of the motor fixing base facing the air outlet.

5. The oblique flow duct fan according to claim 4, characterized in that: The shell includes a front seat, a rear seat and a sealing ring. The front seat and the rear seat together surround and form the air duct. The air inlet is located on the front seat, and the air outlet is located on the rear seat. The motor fixing base presses the silencer ring into the rear seat, and then the motor fixing base is fixedly connected to the rear seat.

6. The oblique flow duct fan according to claim 5, characterized in that: A mounting seat and a plurality of air guide plates are arranged on the inner side of the muffler ring, the mounting seat is connected to the inner side of the muffler ring through the air guide plates, and the plurality of air guide plates are evenly arranged around the mounting seat; The motor fixing base is pressed against the muffler ring and the mounting seat.

7. The oblique flow duct fan according to claim 4, characterized in that: The inner diameter of the muffler ring gradually decreases in a direction away from the motor fixing base, and the muffler hole is located within the projection range of the ventilation channel in the extension direction of the air duct.

8. An oblique flow duct fan according to any one of claims 1 to 7, characterized in that: The shell is provided with a junction box, the junction box is provided with a storage cavity and a connection terminal located in the storage cavity, the connection terminal is electrically connected to the motor, and the side of the junction box is provided with a screw lock, and the screw lock is provided with a wiring hole connected to the inside and outside of the storage cavity.

9. The oblique flow duct fan according to claim 8, characterized in that: The junction box is provided with a box cover and a sealing plate, the storage cavity has an opening, the box cover closes the opening of the storage cavity, and the box cover presses the sealing plate around the opening of the storage cavity.

10. The oblique flow duct fan according to any one of claims 1 to 7, characterized in that: The side of the shell is provided with a plurality of mounting holes for the screw members to pass through.

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