KR101784675B1 - Air blower for fuel cell vehicle - Google Patents

Abstract

The present invention relates to an air blower for a fuel cell vehicle, and an embodiment of the present invention is an air blower for a fuel cell vehicle, comprising: a cooling water cover which can be rotated by rotation of a cooling water in an engagement groove formed at one side of a motor housing, And an air blower for a fuel cell vehicle, which is easy to maintain and repair, by improving the cooling efficiency.

Description

Technical Field [0001] The present invention relates to an air blower for a fuel cell vehicle,

The present invention relates to an air blower, and more particularly, to a fuel cell vehicle air blower in which a cooling water flow path is formed between a motor and an inverter control module.

Generally, the fuel cell vehicle is driven by using hydrogen supplied from the fuel supply unit and oxygen in the air supplied from the air supply unit is supplied to the humidifier and is continuously generated by the electrochemical reaction, which is the reverse reaction of electrolysis of water do.

Here, the fuel cell vehicle includes a fuel cell stack for producing electricity, a humidifier for humidifying and supplying fuel and air to the fuel cell stack, a fuel supply unit for supplying hydrogen to the humidifier, And a cooling module for cooling the fuel cell stack.

The air supply unit includes an air cleaner for filtering foreign substances contained in the air, an air blower for compressing and supplying the air filtered by the air cleaner, and a control box for controlling the air blower.

The air blower is provided with a cooling part in the motor housing, so that the motor is driven at a high speed to generate compressed air. The control box also has a cooling part itself because the power element is overheated in the control process of the air blower.

In the conventional fuel cell vehicle of the related art, the air blower and the control box are separated from each other in the air supply part, so that it is difficult to reduce the volume and weight.

In order to solve such a problem, Korean Unexamined Patent Application Publication No. 10-2009-0069617 (Patent Document 1) discloses an air blower with a control box for a fuel cell vehicle as a technique for integrating an air blower and a control box.

Further, in order to solve the disadvantage that the cooling efficiency of the air blower disclosed in Patent Document 1 is low, and the problem that the cooling structure is complicated and maintenance work is difficult due to failure, Korean Patent Laid-Open No. 10-2011-0065167 (Patent Document 2 ), The cooling efficiency can be enhanced, and the air blower for a fuel cell vehicle, which is easy to maintain and repair by simplifying the cooling structure, is proposed.

1, the air blower according to Patent Document 2 includes a ball root case 20, an impeller 30 mounted inside the ball root case 20 to compress air, and an impeller 30 And a motor case 50 connected to the ball root case 20 and to which the motor 40 is mounted.

The motor case 50 is provided with a motor accommodating portion 51 in which the motor 40 is accommodated and a module accommodating portion 52 in which the inverter control module 60 is accommodated. And the module accommodating portion 52 are communicated with each other.

Accordingly, the motor 40 and the inverter control module 60 are cooled simultaneously by the cooling water flowing along the cooling water pipe 70 in a water-cooled manner.

However, in the case of the air blower 10 of Patent Document 2, it is difficult to process the cooling water pipe 70 in the motor case 50, It is necessary to separate the entire motor case 50 and it is difficult to control sealing and axis alignment at the time of reassembly, which is disadvantageous to the characteristics of NVH (Noise, Vibration, Harshness).

Patent Document 1: Korean Patent Laid-Open No. 10-2009-0069617 Patent Document 2: Korean Patent Publication No. 10-2011-0065167

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and one embodiment of the present invention is to provide a cooling water cover which can be rotated by pivoting cooling water on one side of a motor housing, It is an object of the present invention to provide an air blower for a fuel cell vehicle which is easy to maintain.

According to a preferred embodiment of the present invention, there is provided a motorcycle comprising: a ballot housing; an impeller mounted inside the ballot housing to compress air; a motor for driving the impeller; and a motor coupled to one side of the ballot housing, Wherein the cooling water cover is coupled to one side of the motor housing so that the cooling water can circulate and flow through the motor housing. The fuel cell vehicle air blower according to claim 1, A vehicle air blower is provided.

At this time, the cooling water cover is mounted in a coupling groove formed along the circumferential direction of the motor housing so as to pass between the motor and the inverter control module, and a cooling water flow path is formed on the outer peripheral surface of the cooling water cover.

At this time, a cooling water supply port and a cooling part discharge port are provided on the outer circumferential surface of the motor housing so as to communicate with the coupling groove, respectively.

The cooling water flow path may be formed in a spiral shape, a wave shape, or a ring shape along the outer peripheral surface of the cooling water cover.

According to the air blower for a fuel cell vehicle according to the preferred embodiment of the present invention, the efficiency of the motor is improved due to the improvement of the cooling efficiency, the size of the inverter unit can be reduced, and the installation space can be saved.

In addition, unlike the prior art, it is possible to arrange various flow paths without detaching the motor housing, and it is advantageous for NVH performance because no separate sealing or alignment management work is required for maintenance and repair work.

In addition, since the position of the cooling water inlet / outlet port can be variously selected, the degree of freedom in designing is improved and the cooling water flow path can be easily processed, thereby reducing manufacturing cost and time.

1 is a sectional view showing a conventional air blower for a fuel cell vehicle.
2 is a sectional view of an air blower for a fuel cell vehicle according to an embodiment of the present invention;
3 is an exploded perspective view showing a state in which a cooling water cover is assembled into a motor housing according to an embodiment of the present invention;
4 is a perspective view of an air blower for a fuel cell vehicle according to an embodiment of the present invention.
5 is a perspective view showing a cooling water cover according to another embodiment of the present invention;
6 is a perspective view illustrating a cooling water cover according to another embodiment of the present invention;

Hereinafter, preferred embodiments of an air blower for a fuel cell vehicle according to an embodiment of the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation.

In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

In addition, the following embodiments are not intended to limit the scope of the present invention, but merely as exemplifications of the constituent elements set forth in the claims of the present invention, and are included in technical ideas throughout the specification of the present invention, Embodiments that include components replaceable as equivalents in the elements may be included within the scope of the present invention.

Example

2 is a cross-sectional view of an air blower for a fuel cell vehicle according to an embodiment of the present invention.

2, an air blower 100 for a fuel cell vehicle according to an embodiment of the present invention includes a ball root housing 200, A motor 300 for driving the impeller 240, a motor 300 coupled to one side of the ballast housing 200, a motor 300 mounted inside the inverter 300, And a motor housing 500 having a motor housing 400. The cooling water cover 600 is coupled to the rear end of the motor housing 500 so that cooling water can circulate and flow.

An air inlet 210 and an air outlet 220 are formed in the axial direction and the radial direction of the ball housing 200, respectively. An impeller 240 is mounted in the ball inlet 200, A scroll-shaped blowing portion 230 is formed in the circumferential direction.

At this time, an air flow path 231 is formed in the air supply part 230 so as to transfer the air compressed by the impeller 240 at a high pressure. The air flow path 231 has an air inlet 210 and an air outlet 220 ).

That is, the air introduced into the ball route housing 200 through the air inlet 210 is compressed by the impeller 240 rotating at high speed and is transported along the air flow path 231, To the outside.

An impeller 240 is rotatably mounted inside the ball route housing 200 and the impeller 240 is rotated by driving the motor 300.

At this time, the motor 300 is mounted inside the motor housing 500. The motor housing 500 is coupled to one side of the ball route housing 200, and the inverter control module 400 are provided.

That is, the motor housing 500 includes a motor receiving portion 510 for accommodating the motor and a module accommodating portion 520 for accommodating the inverter control module 400. The cooling water flow path 611, which will be described later, The heat generated in operation of the motor 300 is transmitted to the inverter control module 400 or the heat generated in the inverter control module 400 is prevented from being transmitted to the motor 300, The motor housing portion 510 and the module housing portion 520. The motor housing portion 510 and the module housing portion 520 are formed of the same material.

At this time, it is preferable that the motor housing 500 is formed as a unitary structure having the motor receiving portion 510 and the module receiving portion 520, and the motor housing 500 is made of a material having a high thermal conductivity, for example, aluminum or an aluminum alloy desirable.

The inverter control module 400 has a switching element (not shown) mounted on a circuit board (not shown) to be accommodated in the module accommodating portion 520, which is a closed space, so that electromagnetic wave shielding can be efficiently performed.

The motor 300 includes a stator 310 mounted on the motor housing 510 and a rotating shaft 320 provided to penetrate the stator 310 and coupled to the tip of the impeller 240, The rotor 330 is rotated together with the rotating shaft 320 by a magnetic force when power is applied to the coil wound on the stator 310.

A cover member 700 having a plate-like structure is coupled between the impeller 240 and the motor housing 500 to support the rotation shaft 320 at the front of the motor housing 500. At the center of the cover member 700, The tip end of the rotation shaft 320 is rotatably supported by the support bearing 800a accommodated.

The rear end of the rotation shaft 320 is rotatably supported by a support bearing 800b provided at the center of the rear end of the motor housing 500 and a cap 900 for preventing foreign matter from entering into the rear of the support bearing 800b. Is coupled to the rear center portion of the motor housing (500).

At the rear end of the motor housing 500, a coupling groove 530 is formed in the circumferential direction along the rim of the motor housing 500 at a predetermined distance in the radial direction from the motor receiving portion 510, The motor housing part 530 passes between the motor housing part 510 and the module housing part 520 and is arranged to surround the outer periphery of the stator 310 mounted on the motor housing part 510. [

The cooling water cover 600 is coupled to the coupling groove 530 at the rear end of the motor housing 500.

The cooling water cover 600 includes a pipe-shaped body 610 and a flange portion 620 extended on one side of the body 610. After the body 610 is inserted into the coupling groove 530, The attachment of the cooling water cover 600 to the motor housing 500 is completed by fastening the fastening member 620 to the rear end edge of the motor housing 500 with fasteners such as bolts.

At this time, it is preferable that the cooling water cover 600 is made of a material having high corrosion resistance and heat conductivity, for example, stainless steel, copper, and copper alloy.

FIG. 3 is an exploded perspective view showing a state where a cooling water cover is assembled into a motor housing according to an embodiment of the present invention, and FIG. 4 is a perspective view of an air blower for a fuel cell vehicle according to an embodiment of the present invention.

3, the cooling water cover 600 according to an embodiment of the present invention includes a cooling water passage 611 spirally formed on the outer circumferential surface of the body 610, and a width of the cooling water passage 611 Etc. can be appropriately selected as needed.

3, in order to improve the cooling efficiency, the cooling water flow path 611 may be formed on the outer peripheral surface of the body 610 to have a predetermined depth, It is preferable that an incision is formed so as to communicate with the hollow.

3 and 4, the body 610 of the cooling water cover 600 is inserted into the coupling groove 530 of the motor housing 500, and the flange portion 620 is fastened to the motor 610 with fasteners such as bolts, 2, the cooling water flow path 611, which is sealed up and down by the inner wall of the coupling groove 530, spirally envelopes the outer side of the stator 310 and passes therethrough do.

At this time, it is preferable that a sealing member (not shown) such as a gasket is interposed between the flange portion 620 of the cooling water cover 600 and the rear edge of the motor housing 500 for sealing.

A supply port 540 for supplying cooling water and a discharge port 550 for discharging cooling water are coupled to one side of the motor housing 500. The ports 540 and 550 are communicated with the coupling groove 530, It is preferable that inlet ports 611a and outlet ports 611b are formed at both ends of the cooling water flow path 611 in correspondence with the sectional shapes of the ports 540 and 550.

The position of the supply port 540 and the position of the discharge port 550 which are coupled to the outer circumferential surface of the motor housing 500 by appropriately adjusting the positions of the inlet port 611a and the outlet port 611b in forming the cooling water flow path 611, Can be selected in various ways.

That is, as shown in FIG. 3, the supply port 540 and the discharge port 550 may be positioned on a horizontal line of the same height, or may be spaced apart from each other by a predetermined angle, And the layout of peripherals such as pipes necessary for discharging are free.

Since it is easy to process the coupling groove 530 and assemble the cooling water cover 600 and to separate the cooling water cover 600 from the motor housing 500 at the time of maintenance and maintenance of the cooling water flow path 611, There is no need to disassemble the motor 300 and the motor housing 500 as in the case of the first embodiment.

The operation of the air blower for a fuel cell vehicle according to an embodiment of the present invention will be described with reference to FIGS. 2 to 4. FIG.

The impeller 240 is driven by the motor 300. When power is applied to the coil wound on the stator 310, the rotor 330 is rotated by the magnetic force, and the rotor 330 is rotated together with the rotor 330 The impeller 240 integrally coupled to one end of the rotating shaft 320 rotates to suck outside air.

The air introduced into the ball route housing 200 through the air inlet 210 is compressed at a high pressure in the process of passing through the impeller 240 and is transported along the air flow path 231. Through the air outlet 220, And is supplied to the outside.

At this time, heat of a considerable temperature is generated in the inverter control module 400 and the motor 300, and cooling water is supplied from the outside in order to cool the inverter control module 400 and the motor 300.

The cooling water is supplied through the supply port 540 provided in the motor housing 500 and the cooling water is supplied to the coupling groove 530 of the motor housing 500 through the supply port 540.

At this time, the body 610 of the cooling water cover 600 is coupled to the coupling groove 530 of the motor housing 500, and the cooling water supplied to the coupling groove 530 is coupled to the outer peripheral surface of the body 610 of the cooling water cover 600 And flows along the cooling water flow passage 611 formed.

The cooling water flow path 611 is formed so as to surround the outside of the stator 310 of the motor 300 so as to be repeatedly passed between the motor receiving portion 510 and the module receiving portion 520, The heat generated in the control module 400 is transferred to the cooling water.

The cooling water transferred from the motor 300 and the inverter control module 400 while passing through the cooling water flow path 611 is discharged to the outside through the discharge port 550. Accordingly, Cooling of the module 400 is performed at the same time.

FIG. 5 is a perspective view illustrating a cooling water cover according to another embodiment of the present invention, and FIG. 6 is a perspective view illustrating a cooling water cover according to another embodiment of the present invention.

As shown in FIGS. 5 and 6, the cooling water flow path formed on the outer circumferential surface of the body of the cooling water cover may be formed in various forms as required.

5, a cooling water flow path 611 'is formed in a zigzag shape on the outer circumferential surface of the body 610, and more specifically, the cooling water flow path 611' is formed between the flange portion 620 and the end of the body 610, And extends in the circumferential direction along the outer circumferential surface of the base plate 610.

At this time, as shown in FIG. 5, in order to reduce the flow resistance of the cooling water, it is preferable that the cooling water flow path 611 'is formed in a soft curved wave shape.

6, a plurality of cooling water flow passages 611 "extending in the circumferential direction and spaced apart from each other in the longitudinal direction of the body 610 are formed, and one side of these cooling water flow passages 611 " And the other side communicates with each other to form an annular shape as a whole.

100: air blower
200: Volute housing
240: Impeller
300: motor
400: inverter control module
500: Motor housing
530: Coupling groove
540: Supply port
550: exhaust port
600: Cooling water cover
610: Body
611, 611 ', 611 ": cooling water flow path
620: flange portion

Claims (5)

A motor 300 for driving the impeller 240 and a motor 300 for driving the impeller 240. The motor 300 drives the impeller 240 and the ball route housing 200, And a motor housing (500) coupled to one side of the motor (300) and having an inverter control module (400) mounted on one side thereof, the air blower
A cooling water cover 600 is coupled to one side of the motor housing 500 to allow cooling water to circulate and flow,
The cooling water cover 600 is mounted in an engaging groove 530 formed along the circumferential direction of the motor housing 500 so as to pass between the motor 300 and the inverter control module 400, A groove or a hollow-shaped cooling water flow path 611 recessed radially inward is formed on the outer peripheral surface of the cooling water flow path 600, and cooling water flows through the cooling water flow path 611,
A cooling water supply port 540 and a cooling water discharge port 550 are provided on the outer circumferential surface of the motor housing 500 such that the supply port 540 and the discharge port 550 communicate with the coupling groove 530, Wherein the air blower is disposed on a horizontal line of the same height.
delete delete The method according to claim 1,
Wherein the cooling water channel (611) is formed in a spiral shape along an outer circumferential surface of the cooling water cover (600).
The method according to claim 1,
Wherein the cooling water channel (611) is formed in a wave shape or a ring shape along the outer peripheral surface of the cooling water cover (600).

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