High-temperature-resistant axial flow fan applied to subway

Abstract

The utility model relates to a high-temperature-resistant axial flow fan applied to a subway, which comprises an air duct of the fan, mounting brackets are arranged on two sides of the air duct, and a cylindrical motor mounting barrel is inserted into the air duct. A plurality of front heat dissipation supporting pipes are fixedly connected to the outer wall of the front side of the motor mounting barrel, a plurality of rear heat dissipation supporting pipes opposite to the front heat dissipation supporting pipes are fixedly connected to the outer wall of the rear side of the motor mounting barrel, and the outer ends of the front heat dissipation supporting pipes and the outer ends of the rear heat dissipation supporting pipes are fixedly connected to the inner wall of the air guide barrel; a front through hole and a rear through hole which are communicated with the front heat dissipation supporting pipe and the rear heat dissipation supporting pipe are respectively formed in the cylinder wall of the motor mounting cylinder; a longitudinal communicating pipe is inserted and fixed between the front heat dissipation supporting pipe and the rear heat dissipation supporting pipe, and the two ends of the communicating pipe are communicated with the front heat dissipation supporting pipe and the rear heat dissipation supporting pipe respectively; according to the subway axial flow fan, a support framework for supporting the motor is modified, the cooling effect of the motor can be improved on the basis that cooling liquid is matched with airflow generated by the axial flow fan, and the high-temperature resistance of the subway axial flow fan is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of axial flow fan, more specifically to a high temperature resistant axial flow fan applied to subway. BACKGROUND

[0002] With the advance of city construction, many large and medium-sized cities have launched subway projects, and in the construction of increasingly developed high-grade highways and high-speed railways, a large number of underground tunnels will appear, and subway ventilators are an essential part of underground tunnels, responsible for ventilation of large underground spaces; the current subway tunnel ventilator is set in the underground tunnel, which is relatively hot, and the subway ventilator is generally an axial flow fan, which generates a large amount of heat when running, and the heat is mainly concentrated on the motor of the fan, and the motor outside the subway ventilator is provided with a motor mounting cylinder, which will affect the heat dissipation of the motor, and when the heat of the motor cannot be dissipated, it will cause damage to the motor and affect the service life of the subway ventilator; therefore, a high-temperature-resistant subway ventilator that can accelerate the heat dissipation of the motor and improve the high-temperature resistance of the subway ventilator needs to be designed. SUMMARY

[0003] The utility model discloses a high temperature resistant axial flow fan applied to subway, which improves the heat dissipation effect of the motor and the high-temperature resistance of the subway axial flow fan based on the airflow generated by the cooling liquid cooperating with the axial flow fan.

[0004] A high temperature resistant axial flow fan applied to subway, comprising a fan guide tube, the two sides of the guide tube are provided with mounting brackets, a cylindrical motor mounting cylinder is inserted in the guide tube, a conical flow guide cover is formed at the rear end of the motor mounting cylinder, a motor is inserted at the front end, a rotating shaft of the motor extends out of the motor mounting cylinder and is connected with an impeller, and the impeller is inserted in the guide tube; a plurality of front heat dissipation support pipes are fixedly connected to the outer wall of the front side of the motor mounting cylinder, and a plurality of rear heat dissipation support pipes opposite to the front heat dissipation support pipes are fixedly connected to the outer wall of the rear side of the motor mounting cylinder; the outer wall of the motor mounting cylinder is formed with front through holes and rear through holes respectively, which are in communication with the front heat dissipation support pipes and the rear heat dissipation support pipes;

[0005] The front heat dissipation support pipes and the rear heat dissipation support pipes are fixedly connected with a longitudinal communication pipe, and the two ends of the communication pipe are in communication with the front heat dissipation support pipes and the rear heat dissipation support pipes respectively;

[0006] The motor mounting cylinder is provided with a longitudinal heat dissipation cylinder, the rear end of the heat dissipation cylinder is fixed to the flow guide cover, and the front end abuts against a circular cover plate, the outer ring of the cover plate abuts against the front end surface of the motor mounting cylinder and is inserted with a plurality of screws, the screws are screwed on the motor mounting cylinder respectively, a shaft hole is formed in the middle of the cover plate, a plurality of mounting holes are formed around the cover plate of the shaft hole, the motor is inserted in the heat dissipation cylinder, the rotating shaft of the motor is inserted in the shaft hole of the cover plate, bolts are inserted in the mounting holes of the cover plate and are screwed on the shell of the motor.

[0007] The motor mounting cylinder, the cover plate and the heat dissipation cylinder are surrounded to form an annular heat dissipation cavity, and the heat dissipation cavity, the front heat dissipation support pipe, the rear heat dissipation support pipe and the communication pipe are filled with cooling liquid.

[0008] Preferably, the front heat dissipation support pipe or the rear heat dissipation support pipe is provided with at least three groups, and the front heat dissipation support pipe or the rear heat dissipation support pipe is uniformly distributed in a ring shape around the central axis of the air guide cylinder.

[0009] The central axis of the motor mounting cylinder, the central axis of the air guide cylinder and the central axis of the heat dissipation cylinder are on the same straight line.

[0010] Preferably, a liquid inlet hole connected with the rear heat dissipation support pipe is formed in the cylinder wall of the top of the air guide cylinder, a liquid outlet hole connected with the front heat dissipation support pipe is formed in the cylinder wall of the bottom of the air guide cylinder, an upper sealing plug is screwed and fixed in the liquid inlet hole, and a lower sealing plug is screwed in the liquid outlet hole.

[0011] Preferably, the hole diameter of the rear through hole of the motor mounting cylinder is equal to the inner diameter of the rear heat dissipation support pipe, the hole diameter of the front through hole is equal to the inner diameter of the front heat dissipation support pipe, and the inner diameter of the front heat dissipation support pipe is greater than the inner diameter of the rear heat dissipation support pipe.

[0012] Preferably, a plurality of heat dissipation fins are formed on the outer wall of the heat dissipation cylinder, and the heat dissipation fins are uniformly distributed in a ring shape around the central axis of the heat dissipation cylinder.

[0013] The width of the heat dissipation fin is smaller than the distance between the heat dissipation cylinder and the motor mounting cylinder.

[0014] Preferably, a wire inlet hole is formed in the cylinder wall of the rear side of the heat dissipation cylinder, a wire inlet pipe connected with the wire inlet hole is fixed to the heat dissipation cylinder, the wire inlet pipe is inserted in the rear heat dissipation support pipe, and the outer end of the wire inlet pipe is inserted and fixed to the air guide cylinder.

[0015] Preferably, the mounting bracket comprises two groups of front and rear distributed support plates, the upper end of the support plate is fixed to the outer wall of the air guide cylinder and is formed with an arc-shaped reinforcing plate, and the reinforcing plate is fixed to the outer wall of the air guide cylinder.

[0016] The horizontal bottom plate is fixed between the support plates by insertion, and the bottom plate is formed with inclined support plates on the side close to the air duct, the upper side of the inclined support plate is fixed to the air duct, and the front and rear sides are fixed to the support plates respectively; a plurality of bolt through holes are formed on the bottom plate.

[0017] Preferably, a plurality of reinforcing rings are fixed on the air duct by insertion.

[0018] The metro axial flow fan rectification support motor support structure, based on the cooling liquid cooperation axial flow fan generated airflow can improve the heat dissipation effect of motor, improve the high temperature resistance of metro axial flow fan.

[0019] The metro axial flow fan rectification support motor support structure, based on the cooling liquid cooperation axial flow fan generated airflow can improve the heat dissipation effect of motor, improve the high temperature resistance of metro axial flow fan. BRIEF DESCRIPTION OF DRAWINGS

[0020] Fig. 1 It is a three-dimensional structure schematic diagram of the utility model;

[0021] Fig. 2 It is a front view of the utility model sectional structure schematic diagram;

[0022] Fig. 3 It is a side view of the utility model half sectional structure schematic diagram.

[0023] In the drawing: 1, air duct; 2, mounting bracket; 3, motor mounting cylinder; 4, front heat dissipation support pipe; 5, rear heat dissipation support pipe; 6, communication pipe; 7, heat dissipation cylinder; 8, wire inlet pipe; 9, cover plate; 10, screw; 20, reinforcing ring; 30, upper sealing plug. DETAILED DESCRIPTION

[0024] Embodiment: see Figs. 1 to 3 As shown in the drawing, a kind of high temperature resistance axial flow fan applied to subway, including the air duct 1 of fan, the both sides of air duct 1 are equipped with mounting bracket 2, air duct 1 is inserted with cylindrical motor mounting cylinder 3, the rear end of motor mounting cylinder 3 is formed with conical flow guide cover 31, front end is inserted with motor, the rotating shaft of motor is inserted and is fixedly connected with impeller outside motor mounting cylinder 3, impeller is inserted in air duct 1;The outer wall of motor mounting cylinder 3 front side is fixedly connected with a plurality of front heat dissipation support pipes 4, the outer wall of rear side is fixedly connected with a plurality of rear heat dissipation support pipes 5 opposite to front heat dissipation support pipe 4, and the outer end of front heat dissipation support pipe 4 and rear heat dissipation support pipe 5 is fixedly connected on the inner wall of air duct 1;The cylinder wall of motor mounting cylinder 3 is formed with front through hole 32 and rear through hole 33 respectively, which are connected with front heat dissipation support pipe 4 and rear heat dissipation support pipe 5;

[0025] The longitudinal communication pipe 6 is fixed between the front heat dissipation support pipe 4 and the rear heat dissipation support pipe 5 by insertion, and the two ends of the communication pipe 6 are respectively communicated with the front heat dissipation support pipe 4 and the rear heat dissipation support pipe 5;

[0026] The motor mounting cylinder 3 is provided with a longitudinal heat dissipation cylinder 7, the rear end of the heat dissipation cylinder 7 is fixed to the flow guide cover 31, the front end abuts against a circular cover plate 9, the outer ring of the cover plate 9 abuts against the front end surface of the motor mounting cylinder 3 and is provided with a plurality of screws 10, the screws 10 are screwed to the motor mounting cylinder 3 respectively, the middle part of the cover plate 9 is formed with a shaft hole 91, a plurality of mounting holes 92 are formed around the cover plate 9 of the shaft hole 91, the motor is inserted into the heat dissipation cylinder 7, the rotating shaft of the motor is inserted into the shaft hole 91 of the cover plate 9, the mounting holes 92 of the cover plate 9 are provided with bolts, the bolts are screwed to the shell of the motor.

[0027] The motor mounting cylinder 3, the cover plate 9 and the heat dissipation cylinder 7 are surrounded to form an annular heat dissipation cavity, the heat dissipation cavity, the front heat dissipation support pipe 4, the rear heat dissipation support pipe 5 and the communication pipe 6 are filled with cooling liquid.

[0028] The front heat dissipation support pipe 4 or the rear heat dissipation support pipe 5 is at least provided with three groups, the front heat dissipation support pipe 4 or the rear heat dissipation support pipe 5 is uniformly distributed in a ring shape around the central axis of the air guide cylinder 1, the front heat dissipation support pipe 4 or the rear heat dissipation support pipe 5 can be used as a support rod of the motor and can also be used as a heat dissipation pipe.

[0029] The central axis of the motor mounting cylinder 3, the central axis of the air guide cylinder 1 and the central axis of the heat dissipation cylinder 7 are on the same straight line.

[0030] The top wall of the air guide cylinder 1 is formed with an inlet hole 11 connected with the rear heat dissipation support pipe 5, the bottom wall of the air guide cylinder 1 is formed with an outlet hole 12 connected with the front heat dissipation support pipe 4, an upper sealing plug 30 is screwed and fixed in the inlet hole 11, a lower sealing plug is screwed in the outlet hole 12, the cooling liquid can be added through the inlet hole 11 and the cooling liquid can be discharged through the outlet hole 12.

[0031] The diameter of the rear through hole 33 of the motor mounting cylinder 3 is equal to the inner diameter of the rear heat dissipation support pipe 5, the diameter of the front through hole 32 is equal to the inner diameter of the front heat dissipation support pipe 4, the inner diameter of the front heat dissipation support pipe 4 is larger than the inner diameter of the rear heat dissipation support pipe 5, the front heat dissipation support pipe 4 is close to the impeller and first contacts the airflow generated by the impeller, so the front heat dissipation support pipe 4 starts to dissipate heat first, the heat generated by the motor is first transmitted to the heat dissipation cavity and then the heat dissipation cavity, the front heat dissipation support pipe 4 and the rear heat dissipation support pipe 5 form a temperature difference, based on the transmission from high to low temperature, combined with the different diameters of the front heat dissipation support pipe 4 and the rear heat dissipation support pipe 5, the cooling liquid flows from the heat dissipation cavity to the front heat dissipation support pipe 4, through the communication pipe 6 to the rear heat dissipation support pipe 5, and then back to the heat dissipation cavity, further improving the heat dissipation of the motor.

[0032] The outer wall of the heat sink 7 is formed with a plurality of heat sink 72, which are evenly distributed in a ring around the central axis of the heat sink 7. The heat sink 72 can improve the heat transfer of the heat sink 7 to the coolant in the heat dissipation cavity.

[0033] The width of the heat sink 72 is smaller than the distance between the heat sink 7 and the motor mounting cylinder 3.

[0034] A wire inlet hole 71 is formed on the rear wall of the heat dissipation cylinder 7. A wire inlet pipe 8 connected to the wire inlet hole 71 is fixedly connected to the heat dissipation cylinder 7. The wire inlet pipe 8 is inserted into the rear heat dissipation support pipe 5. The outer end of the wire inlet pipe 8 is inserted into and fixed to the air guide duct 1. The power cord of the motor can be inserted into the wire inlet pipe 8. A terminal block can be provided at the outer end of the wire inlet pipe 8. The terminal block is fixed to the air guide duct 1.

[0035] The mounting bracket 2 includes two sets of front and rear distributed support plates 21. The upper end of the support plate 21 is fixed to the outer wall of the air duct 1 and has an arc-shaped reinforcing plate 211 formed thereon. The reinforcing plate 211 is fixed to the outer wall of the air duct 1.

[0036] A horizontal base plate 22 is inserted and fixed between the support plates 21. An inclined support plate 222 is formed on the side of the base plate 22 near the air duct 1. The upper side of the inclined support plate 222 is fixed to the air duct 1, and the front and rear sides are fixed to the support plates 21 respectively. Several bolt holes 221 are formed on the base plate 22.

[0037] The air duct 1 is fitted with several reinforcing rings 20.

[0038] Working principle: This structure is a high-temperature axial flow fan for subway applications. The high-temperature axial flow fan is reflected in the support structure supporting the motor. The support structure is designed with front and rear double pipes combined with the mounting cylinder 3 and the internal heat dissipation cylinder 7 to form a heat dissipation cavity that can hold coolant and multiple heat dissipation channels composed of the front heat dissipation support pipe 4, the rear heat dissipation support pipe 5 and the connecting pipe 6. The heat dissipation channels are in the airflow of the axial flow fan. Based on liquid cooling and air cooling, the heat dissipation effect of the installed motor can be improved.

[0039] The embodiments described above are illustrative of the present invention and are not intended to limit the present invention. Any person skilled in the art can modify the embodiments without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be as set forth in the claims.

Claims

1. A high-temperature-resistant axial flow fan applied to a subway, comprising a wind guide cylinder (1) of the fan, both sides of the wind guide cylinder (1) are provided with mounting brackets (2), a cylindrical motor mounting cylinder (3) is inserted in the wind guide cylinder (1), a conical flow guide cover (31) is formed at the rear end of the motor mounting cylinder (3), a motor is inserted at the front end, a rotating shaft of the motor extends out of the motor mounting cylinder (3) and is sleeved and fixed with an impeller, and the impeller is inserted in the wind guide cylinder (1); characterized in that: The outer wall of the front side of the motor mounting cylinder (3) is fixedly connected with a plurality of front heat dissipation support pipes (4), and the outer wall of the rear side is fixedly connected with a plurality of rear heat dissipation support pipes (5) opposite to the front heat dissipation support pipes (4); the outer ends of the front heat dissipation support pipes (4) and the rear heat dissipation support pipes (5) are fixedly connected to the inner wall of the air guide cylinder (1); the cylinder wall of the motor mounting cylinder (3) is respectively formed with a front through hole (32) and a rear through hole (33) in communication with the front heat dissipation support pipes (4) and the rear heat dissipation support pipes (5); The front heat dissipation support pipes (4) and the rear heat dissipation support pipes (5) are fixedly connected with a longitudinal communication pipe (6) therebetween, and the two ends of the communication pipe (6) are respectively in communication with the front heat dissipation support pipes (4) and the rear heat dissipation support pipes (5); The motor mounting cylinder (3) is inserted with a longitudinal heat dissipation cylinder (7), the rear end of the heat dissipation cylinder (7) is fixedly connected to the flow cover (31), and the front end abuts against a circular cover plate (9); the outer circle of the cover plate (9) abuts against the front end face of the motor mounting cylinder (3) and is inserted with a plurality of screws (10), and the screws (10) are respectively screwed on the motor mounting cylinder (3); the middle part of the cover plate (9) is formed with a shaft hole (91), a plurality of mounting holes (92) are formed around the cover plate (9) of the shaft hole (91), the motor is inserted in the heat dissipation cylinder (7), the rotating shaft of the motor is inserted in the shaft hole (91) of the cover plate (9), bolts are inserted in the mounting holes (92) of the cover plate (9), and the bolts are screwed on the shell of the motor; The motor mounting cylinder (3), the cover plate (9) and the heat dissipation cylinder (7) are surrounded to form an annular heat dissipation cavity, and the heat dissipation cavity, the front heat dissipation support pipes (4), the rear heat dissipation support pipes (5) and the communication pipe (6) are all filled with cooling liquid.

2. The high-temperature-resistant axial flow fan for subway of claim 1, wherein: The front heat dissipation support pipes (4) or the rear heat dissipation support pipes (5) are at least provided with three groups, and the front heat dissipation support pipes (4) or the rear heat dissipation support pipes (5) are uniformly distributed in a ring shape around the central axis of the air guide cylinder (1); The central axes of the motor mounting cylinder (3), the air guide cylinder (1) and the heat dissipation cylinder (7) are on the same straight line.

3. The high-temperature-resistant axial flow fan for subway of claim 2, wherein: The cylinder wall of the top of the air guide cylinder (1) is formed with a liquid inlet hole (11) in communication with the rear heat dissipation support pipes (5), and the cylinder wall of the bottom of the air guide cylinder (1) is formed with a liquid outlet hole (12) in communication with the front heat dissipation support pipes (4); an upper sealing plug (30) is screwed and fixed in the liquid inlet hole (11), and a lower sealing plug is screwed in the liquid outlet hole (12).

4. The high-temperature-resistant axial flow fan for subway of claim 2, wherein: The hole diameter of the rear through hole (33) of the motor mounting cylinder (3) is equal to the inner diameter of the rear heat dissipation support pipe (5), the hole diameter of the front through hole (32) is equal to the inner diameter of the front heat dissipation support pipe (4), and the inner diameter of the front heat dissipation support pipe (4) is greater than the inner diameter of the rear heat dissipation support pipe (5).

5. The high-temperature-resistant axial flow fan for subway of claim 2, wherein: The outer wall of the heat dissipation cylinder (7) is formed with a plurality of heat dissipation fins (72), and the heat dissipation fins (72) are uniformly distributed in a ring shape around the central axis of the heat dissipation cylinder (7); The width of the heat dissipation fin (72) is less than the spacing between the heat dissipation cylinder (7) and the motor mounting cylinder (3).

6. The high-temperature-resistant axial flow fan for subway of claim 2, wherein: The rear side of the heat dissipation cylinder (7) is formed with a wire inlet hole (71), and a wire inlet pipe (8) is fixed to the heat dissipation cylinder (7) and communicates with the wire inlet hole (71), the wire inlet pipe (8) is inserted into the rear heat dissipation support pipe (5), and the outer end of the wire inlet pipe (8) is inserted and fixed to the air guide cylinder (1).

7. The high-temperature-resistant axial flow fan for subway of claim 1, wherein: The mounting bracket (2) comprises two groups of front and rear distributed support plates (21), the upper end of the support plate (21) is fixed to the outer wall of the air guide cylinder (1) and is formed with an arc-shaped reinforcing plate (211), and the reinforcing plate (211) is fixed to the outer wall of the air guide cylinder (1). The support plates (21) are fixed with a horizontal bottom plate (22) therebetween, the side close to the air guide cylinder (1) of the bottom plate (22) is formed with an inclined support plate (222), the upper side of the inclined support plate (222) is fixed to the air guide cylinder (1), and the front and rear sides are fixed to the support plates (21); and the bottom plate (22) is formed with a plurality of bolt through holes (221).

8. The high-temperature-resistant axial flow fan for subway of claim 1, wherein: The air guide cylinder (1) is inserted and fixed with a plurality of reinforcing rings (20).

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