CN219317215U - A single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles - Google Patents

Abstract

The utility model provides a single-stage high-speed hydrogen fuel cell centrifugal compressor for a hydrogen fuel cell automobile, which comprises an impeller, a motor stator main body, a motor rotor and a shell, wherein an impeller shell is arranged outside the impeller, the impeller is connected with the motor rotor, and the motor rotor is rotationally connected with the motor stator main body; the motor stator main body is arranged in the shell, and the rear end of the shell is provided with a rear end cover; a front end cover is arranged between the motor stator main body and the motor rotor; the rear end of the shell is provided with an air inlet cylinder, a filter element is arranged in the air inlet cylinder, the shell is provided with a cooling liquid outlet and a cooling liquid inlet, the cooling liquid outlet and the cooling liquid inlet are connected with external cooling liquid circulation equipment, the shell is externally provided with a junction box, and the junction box is electrically connected with a motor stator main body; the fixed seat is connected with the impeller shell and the shell, and the shell is connected with the impeller shell. According to the utility model, the motor and the cooling liquid are cooled by the air sucked by the impeller, so that the power supply is saved, the occupied space is reduced, the overall heat dissipation efficiency is improved, and the market popularization and application are facilitated.

Description

A single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles

technical field

The utility model belongs to the field of compressors, in particular to a single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles.

Background technique

Hydrogen fuel cell vehicles, as the name suggests, are vehicles powered by hydrogen fuel cells. The air compressor is an important part of the fuel cell, providing the oxygen needed for the reaction of the stack.

As we all know, the single-stage high-speed hydrogen fuel cell centrifugal compressor used in hydrogen fuel cell vehicles needs to cool the motor when it is used. When cooling, it needs to use external coolant or external air cooling equipment. In this way, it not only wastes power, but also occupies space.

Therefore, it is very necessary to invent a single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles.

Utility model content

In order to solve the above technical problems, the utility model provides a single-stage high-speed hydrogen fuel cell centrifugal compressor for a hydrogen fuel cell vehicle, including an impeller, an impeller casing, a motor stator body, a motor rotor, a casing, a rear end cover and a fixing seat, Wherein: the impeller casing is fixedly installed on the outside of the impeller, and the impeller is fixedly connected to one end of the motor rotor, and the motor rotor is connected to the interior of the motor stator body in rotation, and is coaxial with the motor stator body; the motor stator body is fixedly installed on The inside of the casing, and the rear end of the casing is fixedly installed with a rear end cover; the front end cover is fixedly installed between the motor stator main body and the front end of the motor rotor; The air intake cylinder is used for the entry of external air, and a filter element is fixedly installed inside the outer end of each of the air intake cylinders, and the filter element is used to filter impurities in the external air, and the two sides above the casing are respectively fixedly installed with cooling The liquid outlet and the cooling liquid inlet, the cooling liquid outlet and the cooling liquid inlet are respectively fixedly connected with the external cooling liquid circulation equipment, and a junction box is fixedly installed on one side of the surface of the casing, and the junction box is electrically connected with the main body of the motor stator; The top of one end of the fixing seat is fixedly connected with the bottom of the impeller casing, and the top of the other end of the fixing seat is fixedly connected with the bottom of the casing rear end, and the front end of the casing is fixedly connected with one side of the impeller casing.

Preferably, the impeller housing includes a housing, a cavity, a suction hole, a high-pressure outlet cylinder and a sealing cylinder, and a cavity is opened inside the housing, and a sealing cover is fixedly installed on the outside of the housing; There is a suction hole on the inner side, and the suction hole communicates with the inside of the cavity, and the impeller sucks the external air into the cavity through the suction hole and the air inlet cylinder; a high-pressure outlet cylinder is fixedly installed on the side above the housing, and The high-pressure gas outlet communicates with the interior of the cavity, and the outer end of the high-pressure gas outlet is connected to the gas pipe corresponding to the hydrogen fuel cell to deliver the high-pressure gas in the cavity to the hydrogen fuel cell; The suction hole is coaxial, and the outside of the suction hole is fixedly connected to one end of the sealing cylinder, which is coaxial with the suction hole; the other end of the sealing cylinder is fixedly connected to the front end of the casing, and the outside of the casing The bottom is fixedly connected with the top of one end of the fixed seat.

Preferably, the other end of the sealing cylinder is provided with an annular groove, and four internally threaded fixing holes are evenly distributed inside the annular groove, and a sealing gasket corresponding to the internally threaded fixing holes is placed inside the annular groove.

Preferably, the casing includes a casing main body, a connecting plate, an air cavity and a cooling liquid sealing cavity, the front end of the casing main body is fixedly installed with a connecting plate, and the connecting plate is coaxial with the main body of the casing, and the connecting plate It is fixedly connected with one end of the sealing cylinder with a ring groove; several air cavities are opened through the inside of the main body of the casing, and the air cavities can transport air, and through the air, the cooling of the motor stator main body and the inside of the coolant sealing cavity Liquid cooling, the rear end of each of the air chambers communicates with the inside of each of the air intake cylinders, and the front end of each of the air chambers communicates with the inside of the suction hole; the main body of the casing There is a cooling liquid sealing cavity inside, and the cooling liquid sealing cavity is under the air cavity, the front side of the cooling liquid sealing cavity is connected with the inside of the cooling liquid inlet, and the rear side of the cooling liquid sealing cavity is connected with the cooling liquid outlet. The interior is connected; the lower part of the outer rear end of the casing main body is fixedly connected with the upper part of the other end of the fixing seat.

Preferably, the diameter of the connecting plate is the same as that of the sealing cylinder, and the surface of the connecting plate is provided with threaded holes corresponding to the internally threaded fixing holes, and the threaded holes on the surface of the connecting plate are fixedly connected to the internally threaded fixing holes by bolts .

Compared with the prior art, the utility model has the advantages of:

When the utility model transports gas for the hydrogen fuel cell of a hydrogen fuel cell vehicle, the gas transported through the impeller can cool down the body of the motor and the cooling liquid inside the body, thereby reducing the trouble of cooling with the aid of external equipment and making the utility model It is more efficient and energy-saving when compressing gas as a whole.

Description of drawings

Fig. 1 is a schematic diagram of the overall structure of the utility model.

Fig. 2 is a schematic diagram of the interior of the impeller housing and the structure of the impeller of the present invention.

Fig. 3 is a schematic diagram of the casing structure of the present invention.

In the picture:

Impeller 1, impeller casing 2, casing 21, cavity 22, suction hole 23, high-pressure outlet cylinder 24, sealing cylinder 25, ring groove 26, internal thread fixing hole 27, motor stator main body 3, motor rotor 4, casing 5 , casing main body 51, connection plate 52, air cavity 53, coolant seal cavity 54, rear cover 6, air intake cylinder 7, filter element 8, coolant outlet 9, coolant inlet 10, junction box 11, fixing seat 12 .

Detailed ways

In order to enable those skilled in the art to better understand the utility model solution, the technical solution in the utility model embodiment will be clearly and completely described below. Obviously, the described embodiment is only a part of the utility model embodiment , but not all examples. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

Below in conjunction with accompanying drawing, the utility model is further described:

Embodiment one

Referring to Figures 1-3, a single-stage high-speed hydrogen fuel cell centrifugal compressor for a hydrogen fuel cell vehicle includes an impeller 1, an impeller housing 2, a motor stator body 3, a motor rotor 4, a casing 5, a rear end cover 6 and a fixed Seat 12, wherein: the outside of the impeller 1 is fixedly installed with the impeller casing 2, and the impeller 1 is fixedly connected with one end of the motor rotor 4, and the motor rotor 4 is connected with the inner rotation of the motor stator main body 3, and is coaxial with the motor stator main body 3 The motor stator main body 3 is fixedly installed inside the casing 5, and the rear end of the casing 5 is fixed with a rear end cover 6 by bolts; the front end cover is fixed by bolts between the motor stator main body 3 and the front end of the motor rotor 4 A week of the casing 5 rear side surface is evenly distributed and fixedly installed with three air intake tubes 7, and the air intake tube 7 is used for the entry of external air, and the inside of each air intake tube 7 outer ends is fixedly connected with a filter core 8 by threads, and the filter core 8 uses To filter the impurities in the external air, and the two sides above the casing 5 are fixedly installed with the cooling liquid outlet 9 and the cooling liquid inlet 10 respectively, and the cooling liquid outlet 9 and the cooling liquid inlet 10 are respectively fixedly connected with the external cooling liquid circulation equipment, One side of the surface of the casing 5 is fixedly equipped with a junction box 11, and the junction box 11 is electrically connected with the motor stator main body 3; The top of the other end is fixedly connected to the bottom of the rear end of the casing 5 through a shock absorber, and the front end of the casing 5 is fixedly connected to one side of the impeller casing 2;

It should be noted that, when delivering the required gas to the hydrogen fuel cell of a hydrogen fuel cell vehicle, the motor rotor 4 can drive the impeller 1 to rotate, so that the impeller 1 can pass through the filter core 8, the air intake cylinder 7, the air chamber 53 and the air intake The holes 23 filter the external air and suck it into the cavity 22 for compression, and finally deliver it to the hydrogen fuel cell through the high-pressure outlet cylinder 24; the filter element 8 adopts the prior art, such as the activated carbon filter element in the prior art.

The impeller casing 2 includes a casing 21, a cavity 22, an air suction hole 23, a high-pressure outlet cylinder 24 and a sealing cylinder 25, and a cavity 22 is opened inside the casing 21, and a sealing cover is fixed on the outside of the casing 21 by bolts , the sealing process is carried out between the sealing cover and the housing 21; the inner side of the housing 21 is provided with a suction hole 23, and the suction hole 23 communicates with the inside of the cavity 22, and the impeller 1 passes through the suction hole 23 and the intake cylinder 7 External air is sucked into the cavity 22; a high-pressure gas outlet 24 is fixedly installed on one side above the housing 21, and the high-pressure gas outlet 24 communicates with the interior of the cavity 22, and the outer end of the high-pressure gas outlet 24 is connected to the gas pipe corresponding to the hydrogen fuel cell , to deliver the high-pressure gas in the cavity 22 to the hydrogen fuel cell; the impeller 1 is rotatably installed inside the cavity 22, the impeller 1 is coaxial with the suction hole 23, and the outside of the suction hole 23 is in contact with one end of the sealing cylinder 25 Welding and fixed connection, the sealing cylinder 25 is coaxial with the suction hole 23; the other end of the sealing cylinder 25 is fixedly connected with the front end of the casing 5 through bolts, and the lower part of the outer casing 21 is fixedly connected with the top of one end of the fixed seat 12;

Through the setting of the outer sealing cover of the housing 21, when the impeller 1 fails in the later stage, it is convenient to disassemble and repair the impeller 1 alone. Or when the motor rotor 4 breaks down, it is convenient for disassembly and maintenance.

The other end of the sealing cylinder 25 is provided with an annular groove 26, and four internally threaded fixing holes 27 are evenly distributed inside the annular groove 26, and a sealing gasket corresponding to the internally threaded fixing holes 27 is placed inside the annular groove 26, The gasket is between the sealing cylinder 25 and the connection plate 52;

Through the arrangement of the ring groove 26 and the sealing gasket, the sealing performance between the sealing cylinder 25 and the connection plate 52 can be ensured, and the gas leakage can be prevented when the impeller 1 sucks gas.

The casing 5 includes a casing main body 51, a connecting plate 52, an air cavity 53 and a coolant sealing cavity 54. The front end of the casing main body 51 is fixedly mounted with a connecting plate 52 by welding, and the connecting plate 52 is coaxial with the casing main body 51. , the connection plate 52 is fixed and sealed with one end of the sealing cylinder 25 with the ring groove 26; several air cavities 53 are opened through the inside of the casing main body 51, and the air cavities 53 can transport air, and pass air to the motor stator main body. 3 and the cooling liquid inside the cooling liquid sealing chamber 54 to cool down, the rear end of each air chamber 53 communicates with the inside of each air intake tube 7 respectively, and the front end of each air chamber 53 is respectively connected to the suction hole 23 The inside is connected; the inside of the casing main body 51 is provided with a coolant seal cavity 54, and the coolant seal cavity 54 is located below the air cavity 53, and the front side of the coolant seal cavity 54 communicates with the inside of the coolant inlet 10, The rear side inside the coolant seal cavity 54 communicates with the inside of the coolant outlet 9; the lower part of the outer rear end of the casing main body 51 is fixedly connected to the upper part of the other end of the fixing seat 12;

When delivering the required gas to the hydrogen fuel cell of the hydrogen fuel cell vehicle, connect the external coolant circulation equipment through the coolant inlet 10 and the coolant outlet 9, so that the external coolant circulation equipment can deliver the coolant through the coolant inlet 10 into the cooling liquid sealing cavity 54, then absorb heat, and then return to the external cooling liquid circulation equipment from the cooling liquid outlet 9 for cooling, thereby controlling the temperature of the overall equipment; due to the action of the impeller 1, the gas will flow from the filter element 8 and air intake cylinder 7 into the air cavity 53, and then enter the sealing cylinder 25 from the air cavity 53, so that the gas will seal the cavity to the casing 5 and the cooling liquid during the flow of the gas in the air cavity 53 The coolant inside 54 and the motor stator main body 3 and motor rotor 4 inside the casing 5 perform cooling and cooling work, thereby improving the overall cooling efficiency, reducing the cooling pressure of the external coolant circulation equipment, and reducing the impact on the hydrogen fuel cell. The power consumption makes it more energy-saving overall.

In this embodiment, when the required gas is delivered to the hydrogen fuel cell of the hydrogen fuel cell vehicle, the whole body is fixedly installed on the required position of the vehicle through the fixing seat 12, and then the pipeline corresponding to the hydrogen fuel cell is passed through the high-pressure outlet cylinder 24 Make a fixed connection, and then electrically connect with the power supply of the car through the junction box 11; when working, the motor stator main body 3 drives the motor rotor 4 to rotate at a high speed, thereby driving the impeller 1 to rotate at a high speed, and the impeller 1 rotates at a high speed. The filter element 8, the air inlet cylinder 7, the air cavity 53 and the suction hole 23 filter the external air and suck it into the cavity 22 for compression, and finally deliver it to the hydrogen fuel cell through the high-pressure outlet cylinder 24; when the gas passes through the air cavity 53 , the gas will cool the cooling liquid inside the casing 5 and the cooling liquid sealing chamber 54, as well as the motor stator main body 3 and the motor rotor 4 inside the casing 5, thereby improving the overall cooling efficiency and reducing external cooling. The cooling pressure of the liquid circulation equipment and the reduction of the power consumption of the hydrogen fuel cell; when the filter element 8 needs to be cleaned later, it is only necessary to disassemble the filter element 8 from the intake cylinder 7, and then perform corresponding cleaning or replacement.

Utilize the technical solution described in the utility model, or those skilled in the art design a similar technical solution under the inspiration of the technical solution of the utility model, and achieve the above-mentioned technical effects, all fall into the protection scope of the utility model.

Claims (5)

1. A single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles, characterized in that it includes an impeller (1), an impeller housing (2), a motor stator body (3), a motor rotor (4), and a casing (5), the rear cover (6) and the fixing seat (12), wherein: the impeller housing (2) is fixedly installed on the outside of the impeller (1), and the impeller (1) is fixedly connected to one end of the motor rotor (4), The motor rotor (4) is rotationally connected with the interior of the motor stator main body (3), and is coaxial with the motor stator main body (3); the motor stator main body (3) is fixedly installed inside the casing (5), and The rear end of the casing (5) is fixedly installed with a rear end cover (6); the front end cover is fixedly installed between the motor stator main body (3) and the front end of the motor rotor (4); the rear side of the casing (5) A week of the surface is evenly distributed and fixedly installed with three air intake cylinders (7), and the air intake cylinder (7) is used for the entry of external air, and the inside of each described air intake cylinder (7) is fixedly equipped with a filter core (8), and the filter core ( 8) It is used to filter the impurities in the external air, and the two sides above the casing (5) are fixedly installed with the cooling liquid outlet (9) and the cooling liquid inlet (10), the cooling liquid outlet (9) and the cooling liquid inlet (10 ) is fixedly connected with the external coolant circulation equipment, and a junction box (11) is fixedly installed on one side of the surface of the casing (5), and the junction box (11) is electrically connected with the motor stator main body (3); the fixing seat (12) The top of one end is fixedly connected to the bottom of the impeller casing (2), and the top of the other end of the fixing seat (12) is fixedly connected to the bottom of the rear end of the casing (5). The front end of the casing (5) is connected to the impeller casing One side of (2) is fixedly connected. 2. A single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles according to claim 1, characterized in that: the impeller housing (2) includes a housing (21), a cavity (22), Inhalation hole (23), high-pressure air outlet cylinder (24) and sealing cylinder (25), and the inside of housing (21) is provided with cavity (22), and the outer side of this housing (21) is fixedly installed with sealing cover; The inner side of the housing (21) is provided with an air suction hole (23), and the air suction hole (23) communicates with the inside of the cavity (22), and the impeller (1) passes through the air suction hole (23) and the air intake cylinder (7 ) sucks the outside air into the cavity (22); one side above the housing (21) is fixedly equipped with a high-pressure air outlet (24), and the high-pressure air outlet (24) communicates with the inside of the cavity (22), the The outer end of the high-pressure outlet cylinder (24) is connected with the corresponding air pipe of the hydrogen fuel cell, and the high-pressure gas in the cavity (22) is delivered to the hydrogen fuel cell; the impeller (1) is installed in the cavity (22) in rotation, And coaxial with the suction hole (23), and the outside of the suction hole (23) is fixedly connected with an end of the sealing cylinder (25), and the sealing cylinder (25) is coaxial with the suction hole (23); The other end of the sealing cylinder (25) is fixedly connected with the front end of the casing (5), and the bottom of the outside of the casing (21) is fixedly connected with the top of one end of the fixing seat (12). 3. A single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles according to claim 2, characterized in that: the other end of the sealing cylinder (25) is provided with an annular groove (26), and the annular groove (26) The inside of the groove (26) is evenly distributed with four internally threaded fixing holes (27), and the inside of the ring groove (26) is provided with a sealing gasket corresponding to the internally threaded fixing holes (27). 4. A single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles according to claim 2, characterized in that: the casing (5) includes a casing main body (51), a connecting plate (52) , the air chamber (53) and the coolant seal chamber (54), the front end of the casing main body (51) is fixedly equipped with a connecting plate (52), and the connecting plate (52) is coaxial with the casing main body (51) , the connection plate (52) is fixedly connected to the sealing cylinder (25) with one end of the ring groove (26); the inside of the casing main body (51) is provided with several air cavities (53), the air cavities ( 53) air can be transported, and the cooling liquid inside the motor stator main body (3) and the cooling liquid sealing cavity (54) can be cooled by air; the rear end of each said air cavity (53) is connected with each said The inside of the intake cylinder (7) is connected, and the front end of each air cavity (53) is connected with the inside of the suction hole (23); the inside of the casing main body (51) is provided with a coolant seal chamber (54), and the cooling liquid sealing chamber (54) is below the air chamber (53), the front side of the cooling liquid sealing chamber (54) is connected with the inside of the cooling liquid inlet (10), and the cooling liquid sealing chamber ( 54) The rear side of the interior communicates with the interior of the coolant outlet (9); the lower part of the outer rear end of the casing main body (51) is fixedly connected with the upper part of the other end of the fixing seat (12). 5. A single-stage high-speed hydrogen fuel cell centrifugal compressor for hydrogen fuel cell vehicles according to claim 4, characterized in that: the diameter of the connecting plate (52) is the same as that of the sealing cylinder (25), and The surface of the connecting plate (52) is provided with threaded holes corresponding to the internally threaded fixing holes (27), and the threaded holes on the surface of the connecting plate (52) are fixedly connected with the internally threaded fixing holes (27) by bolts.

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