KR101047045B1 - Rotary machine - Google Patents

Abstract

The rotary machine of the present invention provides a rotary machine that directly cools the heat generated by the stator and the rotor by forming a cooling passage in the stator core without providing a cooling means outside the stator. By the configuration as described above, it is provided to the rotary machine to directly cool the heat generated from the stator and the rotor without using the cooling means outside the stator to maximize the cooling effect, to minimize the shape and weight of the rotary device Can be.

Rotary Machine, Pipe Holder, Pipe Cover

Description

Rotary machine {ROTATING APPARATUS}

The present invention relates to a rotary device, and more particularly, to a rotary device that can directly cool the heat generated by the rotary device by providing a cooling passage and a cooling fluid in the rotary device in the rotary device including a cooling device.

According to the demand for the development of high-performance, high-powered electrical equipment, rotary devices such as generators and electric motors are provided. Since heat loss inevitably occurs in such a rotary device, it is necessary to effectively remove heat generated from the electric device.

The main configuration of such a rotating machine includes a frame, a stator core, a rotating shaft, and a rotor in the frame, and a stator coil is formed in the stator core, which can generate an electromagnetic force according to the rotation of the rotor. Here, the outside of the stator is provided with a cooling device for cooling the heat generated in the stator coil and the stator core in accordance with the rotation of the rotor.

The cooling device for cooling the rotating device may be a method of cooling the rotating device by supplying air cooled by using a cooling fan to the rotating device or by providing cold water around the rotating device.

Here, the water-cooled chiller is a method of cooling the heat generated by the rotary machine indirectly by providing cold water in the frame. In the case of cooling the heat generated by the rotary apparatus by using the water-cooled cooling device, a device including a cold water inlet and an outlet for cooling the exothermic air after cooling the heated air to provide cold water around the rotary machine is separately installed. There is a hassle to do.

In addition, since the water-cooled cooling device requires a large space, when installed in a limited space, the volume of the cooling device, cold water provided indirectly to the rotary machine, etc. may be insufficient to sufficiently cool the heat generated in the stator core. . As a result, the temperature of the inside of the rotating apparatus is greatly increased, and the rotating apparatus may be broken or damaged.

In addition, since the stator and the rotor of the rotary machine are electrically connected, it is necessary to carefully install a sealing to prevent cold water provided to cool the heat generated by the rotary machine from entering the stator or the rotor.

The present invention provides a rotary machine that directly cools the heat generated by the stator and the rotor by forming a cooling passage in the stator core without providing a separate cooling means.

In addition, the present invention provides a rotary machine formed with a sealing to block the flow of cooling fluid provided to cool the heat generated in the stator and the rotor to the stator and the rotor.

In addition, the present invention provides a rotary device that can reduce the total volume and weight of the rotary device because it does not need to provide a separate cooling device around the rotary device.

The rotary device of the present invention for solving the above problems comprises a stator core comprising a plurality of cooling passages; And a rotor provided spaced apart from the stator core in the stator core, wherein the stator core includes a fluid pipe provided in a cooling flow path formed in the circumferential direction of the stator to supply cooling fluid along the longitudinal direction of the stator core.

By using the configuration as described above is provided to the rotary machine to directly cool the heat generated from the stator and the rotor without using a separate cooling means to maximize the cooling efficiency, to minimize the shape and weight of the rotary device have.

A fluid inlet through which a cooling fluid flows is formed at one side of the cooling passage, and a fluid outlet through which a cooling fluid flows out is formed at the other side of the cooling passage, and the fluid inlet and the fluid outlet may be in communication with the fluid pipe. By the above configuration, the cooling fluid flowing from the outside of the stator core is correctly introduced into the fluid inlet, and can be properly discharged to the outside through the fluid outlet.

In addition, a pipe holder may be provided on the fluid pipe, the holder inlet and the holder outlet communicating with the fluid inlet and the fluid outlet. The inside of the pipe holder may be formed such that the end of the fluid pipe is stepped to enable interference fit. That is, the pipe holder can support and fix the fluid pipe provided in the cooling flow passage, and by forming in this way, the stator core and the rotor can be properly cooled by flowing along the cooling flow passage without leakage of the cooling fluid.

In addition, one side of the pipe holder, a fluid supply port for supplying a cooling fluid to the cooling passage or a pipe cover formed with a fluid outlet so that the cooling fluid is discharged to the outside through the cooling passage may be provided. The pipe cover supports and secures the pipe holder and supplies and discharges cooling fluid, thereby allowing the stator core and the rotor to cool.

The pipe cover may be formed along the circumferential direction of the pipe cover, and may include a collecting part capable of holding a cooling fluid for a predetermined time. The collecting part means a space for collecting a cooling fluid supplied to the cooling passage for a predetermined time, and the collecting part collects the cooling fluid, so that the collected cooling fluid can be supplied to the rotating device even if the cooling fluid is not supplied to the rotating device. Do it.

Here, the water collecting part may be formed to be stepped to the inner surface of the pipe cover. That is, the pipe cover may be provided to be in close contact with the pipe holder. Therefore, it is formed to be stepped to the inner surface of the pipe cover, even if the pipe cover is in close contact with the pipe holder can secure a space for collecting the cooling fluid.

On the other hand, the pipe cover is formed on either side of the collecting portion, a sealing (sealing) can be formed to prevent the cooling fluid is directed to the rotor. Sealing may be sealed in the pipe cover by the sealing, it is possible to prevent the electrical fluid is applied to the rotating machine toward the rotor to the cooling fluid.

Such a seal may be formed by bolting or forcibly fastening both sides of the collecting portion. As described above, the sealing may serve to block the cooling fluid from flowing to the rotor in the pipe cover, so that the cooling fluid is sealed to the collecting water by assembling or forcing a bolt between the pipe holder and the pipe cover except the water collecting part. You can.

On the other hand, the sealing may be formed by providing the first rubber ring and the second rubber ring of different sizes on both sides of the collecting portion. At this time, the first rubber ring may be provided at a position close to the rotor with respect to the second rubber ring, the first rubber ring may be formed smaller than the second rubber ring.

By providing a rubber ring on both sides of the collecting portion as described above, and by assembling or forcibly fastening both sides of the collecting portion, it is possible to block the cooling fluid flowing into the rotor of the collecting portion.

Here, the cooling passage is formed in close proximity to the outer peripheral surface of the rotor, the cooling fluid in the fluid pipe can directly cool the heat generated in the rotor. By the configuration as described above, it is possible to easily cool the heat generated rotary device without installing a separate cooling means around the rotary device.

The rotary machine of the present invention can directly cool the heat generated by the rotary machine by forming a cooling passage in which the cooling fluid can be provided in the stator core without installing cooling means outside the stator. As a result, it is effective to cool the heat generated by the rotary machine.

In addition, the rotary device of the present invention provides a sealing that can prevent the cooling fluid provided when cooling the heat generated in the rotary device to the stator core or the rotor of the rotary device to cool the heat generated by the rotary device more safely You can.

In addition, the rotary device of the present invention does not need to provide a separate cooling device around the rotary device by providing a cooling flow path and a cooling fluid in the rotary device. Therefore, the total volume and weight of the rotary machine can be saved.

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to the configuration and operation according to an embodiment of the present invention. The following description is one of several aspects of the patentable invention and the following description forms part of the detailed description of the invention. In the following description, well-known functions or constructions are not described in detail for the sake of clarity and conciseness.

1 is a plan view showing a rotary machine provided with a cooling device according to an embodiment of the present invention.

Referring to the drawings, the rotating device 100 includes a stator core 140 in the frame 110 and a rotor 130 rotatable about the rotation axis 120 in the stator core 140. In this case, the stator core 140 may include a cooling passage 144 to which a cooling fluid is supplied to cool the heat generated by the rotation of the rotary device 100.

The cooling passage 144 may be provided along the longitudinal direction of the stator core 140, and the fluid pipe 142 may be provided to generate a flow path of the cooling fluid in the cooling passage 144.

Meanwhile, a pipe holder 150 may be provided at one end of the stator core 140. The pipe holder 150 may serve to support and fix the fluid pipe 142, and in particular, an end of the fluid pipe 142 may be fixed to prevent the cooling fluid from flowing outside the cooling flow path 144.

In addition, a pipe cover 160 may be provided on the pipe holder 150 including a water collecting part for supporting the pipe holder 150 and holding the cooling fluid for a predetermined time. The pipe cover 160 holds the cooling fluid for a predetermined time, so that the cooling fluid 144 can be continuously supplied to the cooling flow path 144 even when the supply of the cooling fluid to the cooling flow path 144 is stopped.

Hereinafter, the cooling passage 144 formed in the stator core 140, the pipe holder 150, the pipe cover 160, and the like will be described in more detail.

2 is a partial perspective view illustrating the stator of FIG. 1, FIG. 3 is a cross-sectional view of FIG. 2, and FIG. 4 is an exploded perspective view of the stator of FIG. 2.

2 to 4, the stator core 140 may have a cooling passage 144 formed in the stator core 140 in the circumferential direction of the stator core 140, and a cooling fluid in the cooling passage 144. A fluid pipe 142 can be provided to which can be supplied.

Here, the cooling fluid may generally be provided as cold water. At this time, since the fluid pipe 142 cools the rotary device 100 by water cooling, it serves to prevent cold water from directly contacting the rotor 130 or the stator core 140.

Here, at least one cooling passage 144 may be formed in the stator core 140, and a plurality of cooling passages 144 may be formed at predetermined intervals along the circumferential direction of the stator core 140. The cooling passage 144 cools the rotary device 100 by a cooling fluid provided to the cooling passage 144. Accordingly, the cooling passage 144 is formed substantially along the circumference of the rotor 130 provided in the stator core 140 to directly cool the heat generated by the stator core 140 and the rotor 130. It will be desirable to form.

In addition, one side of the cooling passage 144 may be formed with a fluid inlet 146 through which the cooling fluid flows, and the other side of the stator core 140 may discharge the fluid cooling the heated rotary device 100 to the outside. Fluid outlet 148 may be formed. At this time, the fluid inlet 146 and the fluid outlet 148 may be in communication with the fluid pipe 142.

That is, when the cooling fluid is supplied to the cooling flow path 144, since the cooling fluid may substantially flow into the fluid inlet 146, the fluid inlet 146 and the fluid pipe 142 should be formed to communicate with each other.

By the configuration as described above, the cooling passage 144 is provided between the stator core 140 and the rotor 130 to directly cool the heat generated by the rotation of the rotary device 100 to the rotary device 100 Effective for cooling

Meanwhile, one side of the stator core 140 may be provided with a pipe holder 150 including a holder inlet 152 in communication with the fluid inlet 146 or a holder outlet (not shown) in communication with the fluid outlet 148. have.

The pipe holder 150 may be formed to allow interference between both ends of the fluid pipe 142. That is, the inside of the pipe holder 150 may be formed to be stepped so that the end of the fluid pipe 142 may be fitted, and the end of the fluid pipe 142 may be pressed into the stepped portion of the pipe holder 150.

Here, the holder inlet 152 and the holder outlet of the pipe holder 150 may be in communication with the fluid inlet 146 and the fluid outlet 148, respectively, and the number of cooling passages 144 formed in the stator core 140 and It is preferable to form the same. That is, the holder inlet 152 and the holder outlet may be in communication with the fluid inlet 146 and the fluid outlet 148 so as not to block the flow path of the cooling fluid provided to the stator core 140.

In addition, the fluid pipe 142 is fitted to the pipe holder 150, the fluid pipe 142 can be fixed and supported by the pipe holder 150. When the fluid pipe 142 is fixed and supported by the pipe holder 150, the flow path of the cooling fluid supplied to the cooling flow path 144 may be changed to prevent the cooling fluid from being directed to the stator core or the rotor.

Meanwhile, the pipe cover 160 may be provided at one side and the other side of the pipe holder 150. The pipe cover 160 on one side may include a fluid supply port 168 for supplying a cooling fluid to the cooling flow path 144. The pipe cover 150 on the other side has a fluid that cools the heat of the rotary device 100. It may include a fluid discharge port (not shown) to be discharged to the outside through the cooling passage 144.

In the present invention, the fluid supply port 168 and the fluid discharge port is described as an example in which one is formed on the pipe cover 160, one or more may be formed according to the conditions and design specifications required by the invention.

The pipe cover 160 may be formed along the circumferential direction of the pipe cover 160 and may include a water collecting part 166 that may hold the cooling fluid for a predetermined time. At this time, the water collecting part 166 is formed to be stepped to the inner surface of the pipe cover 160 to facilitate the holding of the cooling fluid. By forming the collecting part 166 in the pipe cover 160 as described above, it is possible to continuously supply the cooling fluid to the cooling flow path (144).

In addition, the pipe cover 160 may include sealings 162 and 164 formed at one side of the collecting part 166 to prevent cooling fluid from flowing to the stator core 140 or the rotor 130. Can be. The sealing 162 and 164 may serve to block the cooling fluid from flowing into the stator core 140 or the rotor 130 so that only the cooling fluid flows through the cooling fluid 144. As described above, since the cooling fluid is generally connected to the cold water stator core 140 and the rotor 130, the cooling fluid may be prevented from forming another flow path. As described above, the seals 162 and 164 may be provided to the rotary machine 100 to prevent the rotary device 100 from being damaged by the cooling fluid.

Hereinafter, the present invention will be described with an example in which a rubber ring is provided as the seals 162 and 164. However, in some cases, the pipe cover 160 and the pipe holder 150 may be bolted together or forced to prevent leakage of the cooling fluid. It may be.

In this case, the sealing 162 and 164 may be provided with a first rubber ring 164 and a second rubber ring 166 on both sides of the water collecting part 166. Here, the first rubber ring 164 may be provided in close proximity to the rotor 130, the second rubber ring 166 may be provided on the outside of the first rubber ring 164. The second rubber ring 166 may be formed to have a smaller size. In the present invention, for example, the first rubber ring 164 is formed with a smaller size than the second rubber ring 166, but the size of the first and second rubber ring 166 is the same according to the conditions required in the invention. The size of the second rubber ring 166 may be smaller than that of the first rubber ring 164. The seals 162 and 164 closely contact the pipe holder 150 and the pipe cover 160 to prevent the cooling fluid in the water collecting part 166 from flowing to the rotor 130 or the stator core 140. .

In configuring the cooling device required to cool the heat generated by the rotary device 100, it is not necessary to provide a separate cooling device around the separate rotary device 100 can reduce the total volume and weight of the rotary device.

In addition, since the cooling device is provided in the rotating device 100 in the process of configuring the rotating device 100, the cooling effect on the heat generating unit is maximized.

Although the preferred embodiments of the present invention have been described above by way of example, the scope of the present invention is not limited to these specific embodiments, and may be appropriately changed within the scope described in the claims.

1 is a plan view showing a rotary machine provided with a cooling device according to an embodiment of the present invention.

FIG. 2 is a partial perspective view of the stator of FIG. 1. FIG.

3 is a cross-sectional view of FIG. 2.

4 is an exploded perspective view of the stator of FIG. 2.

<Explanation of symbols for the main parts of the drawings>

100: rotating device 130: rotor

141: stator 142: fluid pipe

144: cooling passage 146: fluid inlet

148: fluid outlet 150: pipe holder

160: pipe cover 162: first rubber ring

164: second rubber ring 166: water collecting part

Claims (12)

In a rotary device comprising a cooling device, A stator core including a plurality of cooling passages; And And a rotor provided in the stator core and spaced apart from the stator core. The cooling passage is formed in the circumferential direction of the stator core, the cooling passage is provided with a fluid pipe in which a cooling fluid is supplied along the longitudinal direction of the stator core, And a pipe holder having a holder inlet communicating with the fluid inlet or a holder outlet communicating with the fluid inlet at one side of the stator core. The method of claim 1, Rotation, characterized in that one end of the cooling flow path is a fluid inlet port through which the cooling fluid is introduced and the other end of the cooling flow path is a fluid outlet port through which the cooling fluid flows out, and the fluid inlet port and the fluid outlet port communicate with the fluid pipe. device. delete The method of claim 1, The inner side of the pipe holder is characterized in that the end of the fluid pipe is formed so as to be stepped to enable interference fit. The method of claim 1, One side of the pipe holder, the fluid supply port for supplying the cooling fluid to the cooling passage or a pipe cover formed with a fluid discharge port is formed so that the cooling fluid is discharged to the outside through the cooling passage. The method of claim 5, The pipe cover, the rotary device is formed along the circumferential direction of the pipe cover, characterized in that it comprises a water collecting portion capable of holding the cooling fluid for a predetermined time. The method of claim 6, And the water collecting part is formed to step into the inner surface of the pipe cover. The method of claim 6, The pipe cover is formed on one side of the collecting portion, the rotating device characterized in that the sealing (sealing) is formed to prevent the cooling fluid from flowing to the stator core or the rotor. The method of claim 8, The sealing device is characterized in that the bolt assembly or forcibly fastening both sides of the collecting portion. The method of claim 8, The sealing device is a rotary device, characterized in that the first rubber ring and the second rubber ring provided on both sides of the collecting portion. The method of claim 10, The first rubber ring is provided in close proximity to the rotor, the second rubber ring is provided on the outside of the first rubber ring, the first rubber ring is characterized in that the second rubber ring is smaller device. The method of claim 1, And the cooling passage is formed close to the outer circumferential surface of the rotor, and the cooling fluid in the fluid pipe directly cools the heat generated by the rotor.

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