阅读说明：本技术 冷却风罩及电机 (Cooling fan housing and motor ) 是由 张伟 于 2017-05-27 设计创作，主要内容包括：提供一种冷却风罩(20)。冷却风罩包括罩体(21)、内风扇(22)和外风扇(23)。第一冷却腔(211)、第二冷却腔(212)和位于第一冷却腔和第二冷却腔之间的隔离腔(213)形成于罩体内,复数第一冷却管(214)设于第一冷却腔内,复数第二冷却管(215)设于第二冷却腔内,第一冷却管及第二冷却管均与隔离腔和外界连通。罩体具有第一表面(216)和与第一表面相对的第二表面(217)。内风扇配置于第一表面上,内风扇的一侧与第一冷却腔连通且另一侧还与第二冷却腔连通,内风扇用于为内循环空气提供循环动力。外风扇配置于第一表面上,并位于隔离腔上,且与隔离腔连通。还提供一种具有该冷却风罩的电机。所述冷却风罩和所述电机可实现较佳的冷却效率,并可提升电机的结构稳定性。(A cooling fan housing (20) is provided. The cooling fan cover comprises a cover body (21), an inner fan (22) and an outer fan (23). First cooling chamber (211), second cooling chamber (212) and be located isolation chamber (213) between first cooling chamber and the second cooling chamber and form in the cover body, and first cooling tube of plural number (214) are located in the first cooling chamber, and the second cooling intracavity is located to plural number second cooling tube (215), and first cooling tube and second cooling tube all communicate with isolation chamber and external world. The cover has a first surface (216) and a second surface (217) opposite the first surface. The inner fan is arranged on the first surface, one side of the inner fan is communicated with the first cooling cavity, the other side of the inner fan is also communicated with the second cooling cavity, and the inner fan is used for providing circulating power for the inner circulating air. The outer fan is arranged on the first surface, positioned on the isolation cavity and communicated with the isolation cavity. Also provides a motor with the cooling fan cover. The cooling fan housing and the motor can realize better cooling efficiency and improve the structural stability of the motor.)

1. A cooling fan housing (20), characterized by comprising:

a cover body (21), wherein a first cooling cavity (211), a second cooling cavity (212) and an isolation cavity (213) between the first cooling cavity (211) and the second cooling cavity (212) are formed in the cover body (21), a plurality of first cooling pipes (214) are arranged in the first cooling cavity (211), a plurality of second cooling pipes (215) are arranged in the second cooling cavity (212), and the first cooling pipes (214) and the second cooling pipes (215) are both communicated with the isolation cavity (213) and the outside; the cover (21) has a first surface (216) and a second surface (217) opposite the first surface (216), the second surface (217) being adapted to be mounted on a housing (201) of an electric machine (200):

an inner fan (22) disposed on the first surface (216), one side of the inner fan (22) being in communication with the first cooling chamber (211) and the other side being in communication with the second cooling chamber (212), the inner fan (22) being configured to provide circulating power for the internally circulating air; and

and the outer fan (23) is arranged on the first surface (216), is positioned on the isolation cavity (213) and is communicated with the isolation cavity (213).

2. A cooling hood (20) according to claim 1, characterized in that said cooling hood (20) further comprises:

an inner air path guide duct (24) is located on the first surface (216), the inner fan (22) is located on the second cooling chamber (212), and the inner air path guide duct (24) is used for communicating the first cooling chamber (211) with the inner fan (22).

3. A cooling hood (20) according to claim 1, characterized in that the interior of said cover (21) is further provided with:

a first partition (218); and

a second partition (219) spaced from the first partition (218) to form the isolated cavity (213).

4. A cooling hood (20) according to claim 3, characterized in that said cover (21) further comprises:

a first hood mesh (220), said first cooling tubes (214) connected between said first hood mesh (220) and said first baffle (218);

a second hood net (221) disposed opposite to the first hood net (220), the second cooling pipe (215) being connected between the second hood net (221) and the second partition (219).

5. A cooling hood (20) according to claim 1, characterized in that said inner fan (22) and said outer fan (23) are centrifugal fans.

6. Electric machine (200), characterized in that the electric machine (200) comprises a cooling hood (20) according to any one of claims 1 to 5.

7. The electric machine (200) of claim 6, wherein the electric machine (200) further comprises:

the machine shell (201), the cooling fan cover (20) is configured on the machine shell (201), and the second surface (217) faces the machine shell (201).

8. The electric machine (200) of claim 6, wherein the second surface (217) defines a first vent hole (222) and a second vent hole (223), the first vent hole (222) communicating with the first cooling chamber (211) and the housing (201), the second vent hole (223) communicating with the second cooling chamber (212) and the housing (201).

9. The electric machine (200) according to claim 6, characterized in that the length of the cover (21) is equal to or slightly greater than the length of the machine housing (201).

10. The electric machine (200) of claim 6, wherein the electric machine (200) has a drive end (202) and a non-drive end (203), the drive end (202) and the non-drive end (203) being disposed opposite one another, the first cooling cavity (211) being located at the drive end (202), and the second cooling cavity (212) being located at the non-drive end (203).

Technical Field

The invention relates to the technical field of motors, in particular to a cooling fan cover and a motor with the cooling fan cover.

Background

Motors are widely used in industrial fields, and cooling hoods are used for cooling the interior of the motor. Fig. 1 is a schematic diagram of a motor with a cooling fan housing in the prior art, please refer to fig. 1, in which the cooling fan housing 10 includes a housing 11, an inner fan 12, an outer fan 13, and an inner air duct guiding cylinder 14, and the inner fan 12, the inner air duct guiding cylinder 14, and the outer fan 13 are disposed on the housing 11. The cover 11 is attached to a housing 101 of the motor 100 and communicates with the inside of the housing 101. The cover 11 is provided therein with a partition (not shown) and a plurality of cooling pipes 111, the plurality of cooling pipes 111 are arranged in parallel through the partition, and the partition is located substantially at the middle of the cooling pipes 111. The inner fan 12 communicates with the inside of the housing 11, and drives air to circulate between the housing 11 and the casing 101 of the motor 100. The inner air path guiding air duct 14 is communicated with the inner fan 12, and air blown out by the inner fan 12 flows to the inner fan 12 through the cover body 11, the inside of the casing 101 and the cover body 11, and then flows through the inner air path guiding air duct 14.

The external fan 13 is in communication with the housing 11 and is configured to draw external air into the housing 11, and the external air enters the housing 11, flows along the cooling pipe 111 from right to left (i.e., from the non-driving end to the driving end of the motor 100), and flows out of the cooling pipe 111. The air inside the cooling pipe 111 exchanges heat with the internal circulation air of the motor 100, thereby cooling the internal circulation air of the motor 100.

In the motor 100, the external air drawn by the external fan 13 enters the cooling pipe 111 from the right side of the cooling pipe 111, and in order to install the external fan 13, the length of the cover 11 needs to be greater than that of the casing 101, so that a part of the cooling fan cover 10 is suspended outside the casing 101 as a cantilever structure, which is not favorable for the stability of the motor. Furthermore, in the single circulation loop of the internal circulation air, the air in the cooling tube 111 is heat-exchanged with the internal circulation air of the motor 100 at the non-drive end of the motor 100, and then is heat-exchanged with the internal circulation air of the motor 100 at the drive end of the motor 100, affecting the cooling efficiency of the internal circulation air.

Disclosure of Invention

In view of the above, an object of the present invention is to provide a cooling fan housing and a motor, which can achieve better cooling efficiency and improve structural stability of the motor.

The invention provides a cooling fan cover which comprises a cover body, an inner fan and an outer fan, wherein a first cooling cavity, a second cooling cavity and an isolation cavity positioned between the first cooling cavity and the second cooling cavity are formed in the cover body, a plurality of first cooling pipes are arranged in the first cooling cavity, a plurality of second cooling pipes are arranged in the second cooling cavity, and the first cooling pipes and the second cooling pipes are communicated with the isolation cavity and the outside. The cover body is provided with a first surface and a second surface opposite to the first surface, and the second surface is used for being installed on a shell of a motor. The inner fan is arranged on the first surface, one side of the inner fan is communicated with the first cooling cavity, the other side of the inner fan is also communicated with the second cooling cavity, and the inner fan is used for providing circulating power for inner circulating air. The outer fan is arranged on the first surface, positioned on the isolation cavity and communicated with the isolation cavity.

In an exemplary embodiment of the cooling hood, the cooling hood further includes: and the inner air path guide air cylinder is positioned on the first surface and is used for communicating the first cooling cavity with the inner fan.

In an exemplary embodiment of the cooling hood, the cooling hood further includes: and the inner air path guide air cylinder is positioned on the first surface and is used for communicating the first cooling cavity with the inner fan.

In an exemplary embodiment of the cooling fan housing, the housing further includes: a first partition plate; and the second partition plate is arranged at an interval with the first partition plate to form the isolation cavity.

In an exemplary embodiment of the cooling hood, the cover further includes: the first fan cover net is connected between the first cooling pipe and the first partition plate; and the second air hood net is opposite to the first air hood net, and the second cooling pipe is connected between the second air hood net and the second partition plate.

In an exemplary embodiment of the cooling hood, the inner fan and the outer fan are centrifugal fans.

The invention also provides a motor, which comprises the cooling fan cover.

In one exemplary embodiment of the motor, the motor further comprises: the cooling fan cover is arranged on the shell, and the second surface faces the shell.

In an exemplary embodiment of the motor, the second surface has a first ventilation hole and a second ventilation hole, the first ventilation hole is communicated with the first cooling cavity and the housing, and the second ventilation hole is communicated with the second cooling cavity and the housing.

In an exemplary embodiment of the electrical machine, the length of the cover is equal to or slightly greater than the length of the housing.

In an exemplary embodiment of the electric machine, the electric machine has a drive end and a non-drive end, the drive end and the non-drive end being disposed opposite one another, the first cooling cavity being located at the drive end and the second cooling cavity being located at the non-drive end.

According to the scheme, the first cooling cavity, the second cooling cavity and the isolation cavity are formed in the cover body of the cooling fan cover, the inner fan is communicated with the first cooling cavity and the second cooling cavity, the outer fan is located on the isolation cavity, air pumped into the isolation cavity by the outer fan can flow into the first cooling pipe of the first cooling cavity and the second cooling pipe of the second cooling cavity respectively in two parts, and the air in the first cooling pipe and the air in the second cooling pipe exchange heat with internal circulating air of the motor respectively to effectively cool the internal circulating air, so that better cooling efficiency is achieved. In addition, because the outer fan is located on the isolation cavity, and the isolation cavity is located between the first cooling cavity and the second cooling cavity, a cantilever structure for installing the outer fan is not required to be arranged, and the length of the cooling fan cover can be equal to or slightly greater than that of the motor shell, so that the structural stability of the motor is improved.

Drawings

Other features, characteristics, advantages and benefits of the present invention will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings.

Fig. 1 is a schematic view of a prior art electric machine having a cooling fan housing.

Fig. 2 is a schematic perspective view of a cooling fan cover according to an embodiment of the invention.

Fig. 3 is a perspective view of the cooling fan cover shown in fig. 2 in another direction.

Fig. 4 is a perspective view illustrating the cooling fan cover shown in fig. 2 applied to a motor.

Fig. 5 is an operation schematic diagram of the inner air passage of the cooling fan housing shown in fig. 2.

Fig. 6 is an operation schematic diagram of an outer air path of the cooling fan housing shown in fig. 2.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail by referring to the following examples.

Fig. 2 is a perspective view of a cooling fan housing according to an embodiment of the present invention, fig. 3 is a perspective view of the cooling fan housing shown in fig. 2 in another direction, and fig. 4 is a perspective view of the cooling fan housing shown in fig. 2 when applied to a motor, and referring to fig. 2 to 4, a cooling fan housing 20 of the embodiment includes a housing body 21, an inner fan 22, and an outer fan 23. Fig. 5 is a schematic diagram of an operation of the inner air path of the cooling fan housing shown in fig. 2, please refer to fig. 5 and 2, a first cooling cavity 211, a second cooling cavity 212 and an isolation cavity 213 are formed in the housing 21, and the isolation cavity 213 is located between the first cooling cavity 211 and the second cooling cavity 212. A plurality of first cooling pipes 214 are arranged in the first cooling cavity 211, a plurality of second cooling pipes 215 are arranged in the second cooling cavity 212, and the first cooling pipes 214 and the second cooling pipes 215 are both communicated with the isolation cavity 213 and the outside.

The cover 21 has a first surface 216 and a second surface 217 opposite to the first surface 216, the second surface 217 being adapted to be mounted on the housing 201 of the motor 200.

The inner fan 22 is disposed on the first surface 216, one side of the inner fan 22 is communicated with the first cooling cavity 211 and the other side is communicated with the second cooling cavity 212, and the inner fan 22 is used for providing circulating power for the inner circulating air.

The outer fan 23 is disposed on the first surface 216, located on the isolation chamber 213, and communicated with the isolation chamber 213.

More specifically, the interior of the enclosure 21 is further provided with a first partition 218 and a second partition 219, and the first partition 218 and the second partition 219 are spaced apart to form the isolation chamber 213. The cover body 21 further comprises a first wind cover net 220 and a second wind cover net 221, the second wind cover net 221 and the first wind cover net 220 are two oppositely arranged side plates of the cover body 21, and a plurality of vent holes are formed in the first wind cover net 220 and the second wind cover net 221. The first cooling pipe 214 is connected between the first hood mesh 220 and the first partition 218, and the first cooling pipe 14 communicates with the outside through a vent hole of the first hood mesh 220. The second cooling pipe 215 is connected between the second hood net 221 and the second partition 219, and the second cooling pipe 215 is communicated with the outside through a vent hole of the second hood net 221.

The inner fan 22 is disposed on the first surface 216, and a through hole (not labeled) is disposed on the first surface 216 and located right above the second cooling cavity 212, in this embodiment, the inner fan 22 is located on the second cooling cavity 212, and the inner fan 22 is communicated with the second cooling cavity 212 through the through hole. The inner fan 22 includes a blade portion, a cover portion and a motor, the blade portion is disposed in the cover portion, the motor is disposed outside the cover portion and is used for driving the blade portion to rotate, and the cover portion enables air drawn out by the inner fan 22 to circulate only in the motor 200 and is not communicated with the outside.

It should be noted that one side of the inner fan 22 is communicated with the first cooling cavity 211 and the other side is communicated with the second cooling cavity 212, wherein the one side and the other side of the inner fan 22 are adjacent sides, as shown in fig. 5. Fig. 6 is a schematic diagram illustrating an operation of the outer air path of the cooling fan housing shown in fig. 2, please refer to fig. 6, in which the outer fan 23 is disposed on the first surface 216, a through hole is formed on the first surface 216 at a position right above the isolation cavity 213, and the outer fan 23 is communicated with the isolation cavity 213 through the through hole.

The outer fan 23 includes a blade portion, an outer fan cover portion and a motor, the blade portion is disposed in the outer fan cover portion, and the motor is disposed outside the outer fan cover portion and is configured to drive the blade portion to rotate. The outer fan cover portion is provided with mesh holes, and the outer fan 23 can draw the external air into the insulation chamber 213. Since the isolation chamber 213 is located between the first cooling chamber 211 and the second cooling chamber 212, and the first cooling pipe 214 and the second cooling pipe 215 are both communicated with the isolation chamber 213 and the outside, the air drawn into the isolation chamber 213 by the external fan 23 can be divided into two parts, one part of the air is discharged out of the enclosure 21 from the right to the left along the first cooling pipe 214, and the other part of the air is discharged out of the enclosure 21 from the left to the right along the second cooling pipe 215.

The inner fan 22 and the outer fan 23 are centrifugal fans. The cooling hood 20 further includes an inner air path guide duct 24, and the inner air path guide duct 24 is located on the first surface 216 and is used for communicating the first cooling cavity 211 with the inner fan 22. Specifically, in the present embodiment, a through hole (not shown) is formed in the first surface 216 at a position directly above the first cooling cavity 211, and the inner air duct guiding cylinder 24 is covered on the through hole. The inner duct guide duct 24 is connected to the hood of the inner fan 22 by a hose 241. In other embodiments, the positions of the inner wind guiding fan 24 and the inner fan 22 are not limited to fig. 5, and may be adjusted according to the actual situation, for example, the inner fan 22 is located on the first cooling chamber 211 and is communicated with the first cooling chamber 211, in which case, the inner wind guiding fan 24 is connected between the inner fan 22 and the second cooling chamber 211.

Referring to fig. 4 and 5 again, the present invention further provides a motor 200, the cooling fan housing 20 may be applied to the motor 200, the motor 200 further includes a casing 201, the cooling fan housing 20 is disposed on the casing 201, and a second surface 217 of the cooling fan housing 20 faces the casing 201, that is, the second surface 217 is mounted on the casing 201, and the second surface 217 is in contact with the casing 201. The motor 200 has a driving end 202 and a non-driving end 203, the driving end 202 being disposed opposite the non-driving end 203. The first cooling cavity 211 is located at the drive end 202 and the second cooling cavity 212 is located at the non-drive end 203. The length of the cover 21 is equal to or slightly greater than the length of the casing 201 of the motor 200.

The second surface 217 of the cooling fan housing 20 is provided with a first air vent 222 and a second air vent 223, the first air vent 222 is communicated with the first cooling cavity 211 and the casing 201 of the motor 200, and the second air vent 223 is communicated with the second cooling cavity 212 and the casing 201 of the motor 200. The internal circulation air of the motor 200 may circulate in the first cooling chamber 211, the second cooling chamber 212, and the cabinet 201.

In operation, the air path of the motor 200 is divided into an outer air path and an inner air path, referring to fig. 6, the outer fan 23 draws outside air into the isolation cavity 213 of the cover 21, the air in the isolation cavity 213 is divided into two parts, the two parts of air are respectively discharged out of the cover 21 along the first cooling pipe 214 and the second cooling pipe 215, the air in the first cooling pipe 214 exchanges heat with the inner circulation air entering the first cooling cavity 211, and the air in the second cooling pipe 215 exchanges heat with the inner circulation air entering the second cooling cavity 212, so as to effectively cool the inner circulation air.

Referring to fig. 5 and 4, the internal fan 22 drives the internal circulation air to flow into the housing 201 of the motor 200 from the second cooling cavity 212, the internal circulation air entering the housing 201 flows from the non-driving end 203 to the driving end 202 of the motor 200 to cool the stator core and the rotor core inside the motor 200, the internal circulation air flows through the first cooling cavity 211, is cooled by the first cooling pipe 214, then flows out of the first cooling cavity 211, flows through the internal air path to the air duct 24 and the hose 241, is sucked into the second cooling cavity 212 by the internal fan 22, is cooled by the second cooling pipe 215, and then flows into the housing 201, and thus circulates.

It should be noted that the cooling fan housing 20 may be an IC666 cooling fan housing, but the type of the cooling fan housing 20 is not limited thereto, and the size of the cooling fan housing 20 may be arbitrarily adjusted according to actual requirements. The motor 200 may be cooled by axial and radial mixed ventilation, in other words, the internal circulation air is divided into a plurality of paths in the casing 201 of the motor 200 and flows along the axial and radial directions of the casing 201, thereby cooling the stator core and the rotor core inside the motor 200.

The cooling fan cover and the motor at least have the following advantages:

1. in the cooling fan housing and the motor, a first cooling cavity, a second cooling cavity and an isolation cavity are formed in a housing body of the cooling fan housing, an inner fan is communicated with the first cooling cavity and the second cooling cavity, an outer fan is positioned on the isolation cavity, air pumped into the isolation cavity by the outer fan can flow into a first cooling pipe of the first cooling cavity and a second cooling pipe of the second cooling cavity respectively in two parts, and air in the first cooling pipe and the second cooling pipe exchanges heat with internal circulating air of the motor respectively to effectively cool the internal circulating air, so that better cooling efficiency is realized. In addition, because the outer fan is located on the isolation cavity, and the isolation cavity is located between the first cooling cavity and the second cooling cavity, a cantilever structure for installing the outer fan is not required to be arranged, and the length of the cooling fan cover can be equal to or slightly greater than that of the motor shell, so that the structural stability of the motor is improved.

2. In an embodiment of the cooling fan housing and the motor of the present invention, a first partition plate and a second partition plate are further disposed inside the housing of the cooling fan housing, the first partition plate and the second partition plate are spaced apart from each other to form an isolation cavity, the air drawn into the isolation cavity by the external fan can be divided in the isolation cavity, and the heat exchange efficiency between the air flowing into the first cooling pipe and the second cooling pipe and the internal circulation air of the motor is high. The isolation cavity separates the first cooling cavity from the second cooling cavity, so that heat exchange between the internal circulation air in the first cooling cavity and the internal circulation air in the second cooling cavity can be effectively prevented, and the cooling performance of the motor is favorably improved.

3. In an embodiment of the cooling fan housing and the motor of the present invention, the cooling fan housing further includes an inner air path guide duct for communicating the first cooling chamber with the inner fan, so that the inner circulation air of the motor can smoothly flow into the inner fan.

4. In one embodiment of the cooling fan housing and the motor, the inner air duct guide air cylinder and the cover part of the inner fan are connected through a hose, and the hose is used for facilitating the installation of the inner fan and the inner air duct guide air cylinder at proper positions.

5. In one embodiment of the cooling fan housing and the motor, the cooling fan housing does not need to be provided with a cantilever structure, so that the length of the cooling fan housing is reduced, the weight is reduced, and the cost is reduced.

6. In one embodiment of the cooling fan housing and the motor, the first cooling pipe and the second cooling pipe are separated by the isolation cavity, so that the length of the cooling pipe is reduced, and the weight and the cost of the cooling fan housing are further reduced.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.