Axial flow gas booster fan and fuel cell using the same

Abstract

The present invention discloses an axial-flow gas booster fan and a fuel cell used therein, the axial-flow gas booster fan comprising a motor, a fan housing and a wind wheel, characterized in that: the fan housing comprises a front cover, a rear cover and a sleeve, the front cover and the rear cover are respectively mounted on two ends of the sleeve, a first cavity is arranged in the sleeve, the motor is arranged in the first cavity, an air inlet is arranged in the middle of the front cover, an air outlet is arranged in the middle of the rear cover, a second cavity is also arranged in the front cover, the wind wheel is placed in the second cavity, the air inlet, the first cavity, the second cavity and the air outlet are connected, the motor comprises a rotating shaft, the end of the rotating shaft is connected to the wind wheel, a flow channel is formed between the motor and the sleeve, a plurality of guide blades are protrudingly arranged on the inner wall surface of the sleeve at circumferential intervals, the installation structure is simple, the integration is high, the volume is small, the performance is excellent and the boosting effect is good.

Description

Technical field:

[0001] The invention relates to an axial flow gas booster fan and a fuel cell using the same. Background technology:

[0002] Hydrogen fuel cells can directly convert the chemical energy of hydrogen into electrical energy without combustion. Due to their high efficiency and power density, zero emissions, and silent operation, they are very suitable for fuel cell vehicles. In the hydrogen circulation system of hydrogen fuel cell vehicles, the three main types of fuel cell hydrogen boosting are currently diaphragm pumps, worm rotor pumps, and ejectors; diaphragm pumps are reliable and quiet, but are limited by the inherent characteristics of positive displacement booster pumps and are large in size; worm rotor pumps have excellent performance, but are noisy, have a short lifespan, and are close in size to diaphragm pumps; ejectors are small in size, but have higher requirements for the inlet hydrogen pressure. Summary of the invention:

[0003] The object of the present invention is to provide an axial flow gas booster fan and a fuel cell using the same, which has a simple installation structure, high integration, small size, excellent performance and good boosting effect.

[0004] The purpose of the present invention is achieved through the following technical solutions.

[0005] An axial flow gas booster fan comprises a motor, a fan housing and a wind wheel, characterized in that: the fan housing comprises a front cover, a rear cover and a sleeve, the front cover and the rear cover are respectively mounted on the two ends of the sleeve, a first cavity is arranged in the sleeve, the motor is installed in the first cavity, an air inlet is opened in the middle of the front cover, an air outlet is opened in the middle of the rear cover, a second cavity is also arranged in the front cover, the wind wheel is placed in the second cavity, the air inlet, the first cavity, the second cavity and the air outlet are connected, the motor comprises a rotating shaft, the end of the rotating shaft is connected to the wind wheel, a flow channel is formed between the motor and the sleeve, and a plurality of guide blades are arranged on the inner wall surface of the sleeve at circumferential intervals.

[0006] The inner side of the guide vane is tightly matched with the outer surface of the motor.

[0007] A mounting seat is provided at one end of the sleeve close to the front cover, an axial hole is provided in the middle of the mounting seat, the rotating shaft of the motor passes through the axial hole of the mounting seat and is connected to the wind wheel, and the motor is mounted on the mounting seat.

[0008] The edge of the mounting seat is provided with a plurality of wind blade connecting ribs connected to the inner wall surface of the sleeve, the mounting seat is provided with a plurality of first threaded holes, and the top surface of the motor is provided with a plurality of second threaded holes. The motor is fixed in the sleeve by screwing screws into the first threaded holes and the second threaded holes.

[0009] The plurality of wind blade connecting ribs and the plurality of guide blades are in corresponding positions.

[0010] A plurality of heat dissipation ribs are arranged on the bottom end surface of the motor.

[0011] The sleeve, guide vanes, wind blade connecting ribs and mounting seat are integrally injection molded.

[0012] The front cover includes a first pipe, a first transition cone and a first cylindrical portion, one end of the first transition cone is connected to the first pipe, and the other end is connected to the first cylindrical portion, one end of the first pipe is provided with an air inlet, a second cavity is formed in the first cylindrical portion and the first transition cone, a first mounting flange is provided on the edge of one end of the first cylindrical portion close to the sleeve, and a second mounting flange is provided on the edge of one end of the sleeve close to the front cover.

[0013] The back cover includes a second pipe, a second transition cone and a second cylindrical portion, one end of the second transition cone is connected to the second pipe, one end of the second pipe is provided with an air outlet, a third cavity is formed inside the second cylindrical portion and the second transition cone, a third mounting flange is provided at an edge of one end of the second cylindrical portion close to the sleeve, and a fourth mounting flange is provided at an edge of one end of the sleeve close to the back cover.

[0014] A fuel cell comprises a casing, a stack module, a booster fan and a hydrogen inlet regulating valve assembly, wherein the stack module, the booster fan and the hydrogen inlet regulating valve assembly are installed inside the casing, and is characterized in that: the booster fan is the above-mentioned axial flow gas booster fan, and the unreacted residual hydrogen coming out of the stack module is transported to the air inlet of the axial flow gas booster fan, and the air outlet of the axial flow gas booster fan transports the unreacted residual hydrogen into the stack module again for reaction.

[0015] The axial flow gas booster fan comprises a motor, a fan housing and a wind wheel, and the fan housing comprises a front cover, a rear cover and a sleeve, the front cover and the rear cover are respectively mounted on the top and the bottom of the sleeve, a first cavity is arranged in the sleeve, the motor is mounted in the first cavity, an air inlet is arranged in the middle of the front cover, an air outlet is arranged in the middle of the rear cover, a second cavity is also arranged in the front cover, the wind wheel is placed in the second cavity, the air inlet, the first cavity, the second cavity and the air outlet are connected, a first pipe is arranged on the front cover, an air inlet is arranged at one end of the first pipe, a second pipe is arranged on the rear cover, an air outlet is arranged at one end of the second pipe, the first pipe and the second pipe are respectively connected to the hydrogen inlet and the hydrogen exhaust port of the fuel cell module through connecting pipes

[0016] Compared with the prior art, the present invention has the following effects:

[0017] 1) The present invention includes a motor, a fan housing and a wind wheel, and is characterized in that: the fan housing includes a front cover, a rear cover and a sleeve, the front cover and the rear cover are respectively installed at the two ends of the sleeve, a first cavity is provided in the sleeve, the motor is installed in the first cavity, an air inlet is opened in the middle of the front cover, an air outlet is opened in the middle of the rear cover, a second cavity is also provided in the front cover, the wind wheel is placed in the second cavity, the air inlet, the first cavity, the second cavity and the air outlet are connected, the motor includes a rotating shaft, the end of the rotating shaft is connected to the wind wheel, a flow channel is formed between the motor and the sleeve, a plurality of guide blades are protrudingly arranged on the inner wall surface of the sleeve at circumferential intervals, the installation structure is simple, the integration is high, the volume is small, the performance is excellent and the boosting effect is good.

[0018] 2) Other advantages are described in detail in the specific embodiments. Description of the drawings:

[0019] Figure 1 is a three-dimensional diagram of the first embodiment of the present invention;

[0020] Figure 2 is a three-dimensional exploded view of the first embodiment of the present invention;

[0021] Figure 3 is a three-dimensional exploded view from another angle of the first embodiment of the present invention;

[0022] Figure 4 is a side view of the first embodiment of the present invention;

[0023] Figure 5 yes Figure 4 Sectional view of AA in the middle;

[0024] Figure 6 yes Figure 5 Cross-sectional view of the middle BB;

[0025] Figure 7 It is a partial structural schematic diagram of the first embodiment of the present invention;

[0026] Figure 8 It is a partial structural exploded view of the first embodiment of the present invention;

[0027] Fig. 9 It is a partial structural front view of the first embodiment of the present invention;

[0028] Fig.10 yes Fig. 9 Cross-sectional view of CC;

[0029] Fig.11 This is a schematic diagram of fuel cell control according to the second embodiment of the present invention. Specific implementation method:

[0030] The present invention is further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0031] Embodiment 1:

[0032] like Figures 1 to 10 As shown, the present embodiment provides an axial flow gas booster fan, comprising a motor 1, a fan housing 2 and a wind wheel 3, characterized in that: the fan housing 2 comprises a front cover 21, a rear cover 22 and a sleeve 23, the front cover 21 and the rear cover 22 are respectively mounted at the two ends of the sleeve 23, a first cavity 233 is provided in the sleeve 23, the motor 1 is mounted in the first cavity 233, an air inlet 210 is provided in the middle of the front cover 21, an air outlet 220 is provided in the middle of the rear cover 2 ... A second cavity 211 is also provided in the cover 21, and the wind wheel 3 is placed in the second cavity 211. The air inlet 210, the first cavity 233, the second cavity 211 and the air outlet 210 are connected. The motor 1 includes a rotating shaft 11, and the end of the rotating shaft 11 is connected to the wind wheel 3. A flow channel 20 is formed between the motor 1 and the sleeve 23. A plurality of guide blades 234 are protrudingly arranged at circumferential intervals on the inner wall surface of the sleeve 23. The installation structure is simple, the integration is high, the volume is small, the performance is excellent, and the supercharging effect is good.

[0033] The inner side 2340 of the guide vane 234 is closely matched with the outer surface of the motor 1, with high assembly precision and better flow guiding performance. The guide vane 234 is arranged parallel to the rotating shaft, so that the airflow can flow more smoothly in the axial direction.

[0034] A mounting seat 235 is provided at one end of the sleeve 23 close to the front cover 21, and an axial hole 236 is provided in the middle of the mounting seat 235. The rotating shaft 11 of the motor 1 passes through the axial hole 236 of the mounting seat 235 and is connected to the wind wheel 3. The motor 1 is installed on the mounting seat 235, and the installation structure is simple.

[0035] The edge of the mounting seat 235 is provided with a plurality of wind blade connecting ribs 237 connected to the inner wall surface of the sleeve 23. The mounting seat 235 is provided with a plurality of first threaded holes 238. The top end surface 12 of the motor 1 is provided with a plurality of second threaded holes 13. The motor 1 is fixed in the sleeve 23 by screwing the screws 100 into the first threaded holes 238 and the second threaded holes 13. The mounting structure is simple and firm.

[0036] The plurality of wind blade connecting ribs 237 and the plurality of guide blades 234 are in corresponding positions, and the structural arrangement is reasonable.

[0037] A plurality of heat dissipation ribs 15 are disposed on the bottom end surface 14 of the motor 1, which has a good heat dissipation effect.

[0038] The sleeve 23, the guide vane 234, the wind blade connecting rib 237 and the mounting seat 235 are integrally injection-molded, and have a simple structure and are easy to manufacture.

[0039] The front cover 21 includes a first pipe 212, a first transition cone portion 213 and a first cylindrical portion 214. One end of the first transition cone portion 213 is connected to the first pipe 212, and the other end is connected to the first cylindrical portion 214. An air inlet 210 is provided at one end of the first pipe 212. A second cavity 211 is formed in the first cylindrical portion 214 and the first transition cone portion 213. A first mounting flange 215 is provided at an edge of one end of the first cylindrical portion 214 close to the sleeve. A second mounting flange 239 is provided at an edge of one end of the sleeve 23 close to the front cover 21. The first pipe 212 is convenient for connecting to an external connecting pipe, and the mounting structure is simple.

[0040] The rear cover 22 includes a second pipe 221, a second transition cone 222 and a second cylindrical portion 224. One end of the second transition cone 222 is connected to the second pipe 221. One end of the second pipe 221 is provided with an air outlet 220. The second cylindrical portion 224 and the second transition cone 222 form a third cavity 225. The second cylindrical portion 224 is provided with a third mounting flange 223 at one end edge close to the sleeve 23. The sleeve 23 is provided with a fourth mounting flange 230 at one end edge close to the rear cover 22. The second pipe 221 is convenient for connecting to an external connecting pipe, and the mounting structure is simple.

[0041] Embodiment 2:

[0042] like Figure 2 , Figure 3 , Figure 5 and Fig.11 As shown, a fuel cell of the present invention includes a box, a stack module, a booster fan and a hydrogen inlet regulating valve assembly, wherein the stack module, the booster fan and the hydrogen inlet regulating valve assembly are installed inside the box, and is characterized in that: the booster fan is the axial flow gas booster fan described in the above-mentioned embodiment 1, and the unreacted residual hydrogen coming out of the stack module is transported to the air inlet 210 of the axial flow gas booster fan, and the air outlet 220 of the axial flow gas booster fan transports the unreacted residual hydrogen to enter the stack module again for reaction. The use of an axial flow gas booster fan occupies a small cavity inside a fuel cell, has a simple installation structure, high integration, low noise and good boosting effect.

[0043] The axial flow gas booster fan comprises a motor 1, a fan housing 2 and a wind wheel 3. The fan housing 2 comprises a front cover 21, a rear cover 22 and a sleeve 23. The front cover 21 and the rear cover 22 are respectively mounted on the top 231 and the bottom 232 of the sleeve 23. A first cavity 233 is provided in the sleeve 23. The motor 1 is mounted in the first cavity 233. An air inlet 210 is provided in the middle of the front cover 21. An air outlet 220 is provided in the middle of the rear cover 22. A second cavity 233 is also provided in the front cover 21. 11. The wind wheel 3 is placed in the second cavity 211, the air inlet 210, the first cavity 233, the second cavity 211 and the air outlet 210 are connected, the front cover 21 is provided with a first pipe 212, one end of the first pipe 212 is provided with an air inlet 210, the rear cover 22 is provided with a second pipe 221, one end of the second pipe 221 is provided with an air outlet 220, the first pipe 221 and the second pipe 220 are respectively connected to the hydrogen inlet and the hydrogen outlet of the fuel cell module through connecting pipes.

[0044] The above embodiments are preferred implementation modes of the present invention, but the implementation modes of the present invention are not limited thereto. Any other changes, modifications, substitutions, combinations, and simplifications made without departing from the spirit and principle of the present invention are all equivalent replacement methods and are included in the protection scope of the present invention.

Claims

1. An axial flow gas booster fan, comprising a motor (1), a fan housing (2) and a fan wheel (3), characterized in that: The fan housing (2) comprises a front cover (21), a rear cover (22) and a sleeve (23). The front cover (21) and the rear cover (22) are respectively mounted on two ends of the sleeve (23). A first cavity (233) is provided in the sleeve (23). The motor (1) is mounted in the first cavity (233). An air inlet (210) is provided in the middle of the front cover (21). An air outlet (220) is provided in the middle of the rear cover (22). A second cavity (211) is further provided in the front cover (21). The wind wheel (3) is placed in the second cavity (211). The air inlet (210), the first cavity (233), the second cavity (211) and the air outlet (220) are connected. The motor (1) comprises a rotating shaft (11). The end of the rotating shaft (11) is connected to the wind wheel (3), and a flow channel (20) is formed between the motor (1) and the sleeve (23). The inner wall surface of the sleeve (23) is provided with a plurality of guide blades (234) protrudingly arranged at intervals in the circumferential direction; a mounting seat (235) is provided at one end of the sleeve (23) close to the front cover (21), and an axial hole (236) is provided in the middle of the mounting seat (235). The rotating shaft (11) of the motor (1) passes through the axial hole (236) of the mounting seat (235) and is connected to the wind wheel (3), and the motor (1) is mounted on the mounting seat (235); a plurality of wind blade connecting ribs (237) are provided on the edge of the mounting seat (235) and are connected to the inner wall surface of the sleeve (23), a plurality of first threaded holes (238) are provided on the mounting seat (235), and a plurality of second threaded holes (13) are provided on the top surface (12) of the motor (1) , screwing the screw (100) into the first threaded hole (238) and the second threaded hole (13) to fix the motor (1) in the sleeve (23); The plurality of wind blade connecting ribs (237) and the plurality of guide blades (234) are located correspondingly.

2. The axial flow gas booster fan according to claim 1, characterized in that: The inner side (2340) of the guide blade (234) is tightly matched with the outer surface of the motor (1).

3. The axial flow gas booster fan according to claim 1, characterized in that: A plurality of heat dissipation ribs (15) are provided on the bottom end surface (14) of the motor (1).

4. The axial flow gas booster fan according to claim 1, characterized in that: The sleeve (23), the guide blade (234), the wind blade connecting rib (237) and the mounting seat (235) are integrally injection molded.

5. An axial flow gas booster fan according to any one of claims 1 to 4, characterized in that: The front cover (21) comprises a first pipe (212), a first transition cone (213) and a first cylindrical portion (214); one end of the first transition cone (213) is connected to the first pipe (212), and the other end is connected to the first cylindrical portion (214); one end of the first pipe (212) is provided with an air inlet (210); a second cavity (211) is formed between the first cylindrical portion (214) and the first transition cone (213); a first mounting flange (215) is provided at an edge of one end of the first cylindrical portion (214) close to the sleeve; and a second mounting flange (239) is provided at an edge of one end of the sleeve (23) close to the front cover (21).

6. The axial flow gas booster fan according to claim 5, characterized in that: The rear cover (22) comprises a second pipe (221), a second transition cone (222) and a second cylindrical portion (224); one end of the second transition cone (222) is connected to the second pipe (221); one end of the second pipe (221) is provided with an air outlet (220); a third cavity (225) is formed between the second cylindrical portion (224) and the second transition cone (222); a third mounting flange (223) is provided at an edge of one end of the second cylindrical portion (224) close to the sleeve (23); and a fourth mounting flange (230) is provided at an edge of one end of the sleeve (23) close to the rear cover (22).

7. A fuel cell, comprising a box, a stack module, a booster fan and a hydrogen inlet regulating valve assembly, wherein the stack module, the booster fan and the hydrogen inlet regulating valve assembly are installed in the box, characterized in that: The booster fan is an axial flow gas booster fan as described in any one of claims 1 to 6 above, and the unreacted residual hydrogen coming out of the fuel cell module is transported to the air inlet (210) of the axial flow gas booster fan, and the air outlet (220) of the axial flow gas booster fan transports the unreacted residual hydrogen into the fuel cell module again for reaction.

8. A fuel cell according to claim 7, characterized in that: The axial flow gas booster fan comprises a motor (1), a fan housing (2) and a wind wheel (3); the fan housing (2) comprises a front cover (21), a rear cover (22) and a sleeve (23); the front cover (21) and the rear cover (22) are respectively mounted on the top (231) and the bottom (232) of the sleeve (23); a first cavity (233) is provided in the sleeve (23); the motor (1) is mounted in the first cavity (233); an air inlet (210) is provided in the middle of the front cover (21); and an air outlet (220) is provided in the middle of the rear cover (22). The front cover (21) is also provided with a second cavity (211), the wind wheel (3) is placed in the second cavity (211), the air inlet (210), the first cavity (233), the second cavity (211) and the air outlet (220) are connected, the front cover (21) is provided with a first pipe (212), one end of the first pipe (212) is provided with an air inlet (210), the rear cover (22) is provided with a second pipe (221), one end of the second pipe (221) is provided with an air outlet (220), and the first pipe (212) and the second pipe (221) are respectively connected to the hydrogen inlet and the hydrogen outlet of the fuel cell module through connecting pipes.

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