KR101278302B1 - Blower device equipped with cooling means for high temperature and cryocenic gas - Google Patents

Abstract

PURPOSE: A blower with a cooling unit for simulating high-temperature and cryogenic environments is provided to prevent the fluid heat of a scroll from being transferred to a motor by inserting a heat barrier between a motor housing and the scroll. CONSTITUTION: A blower with a cooling unit for simulating high-temperature and cryogenic environments comprises a rotary blade, a motor(200), and a cooling unit. The motor operates the rotary blade and comprises a rotor, a stator, and motor housing(210). The rotor is coupled to the rotary blade. The stator is formed of a coil. The cooling unit circulates heat-exchange medium outside the stator to cool the heat of the motor.

Description

BLOWER DEVICE EQUIPPED WITH COOLING MEANS FOR HIGH TEMPERATURE AND CRYOCENIC GAS}

The present invention relates to a blower for high temperature and cryogenic environment having a cooling means, specifically the present invention can block the transfer of the heat of the fluid in the scroll to the motor, by configuring the heat exchange medium to circulate the outside of the stator The present invention relates to a high temperature and cryogenic environment simulated blower equipped with a cooling means capable of miniaturizing or reducing the weight of the blower without having to provide a separate heat exchanger or a casing for the heat exchanger.

The space environment is characterized by a high vacuum environment and a harsh environment with repeated high and low temperature conditions caused by solar radiation.

Satellites are continuously exposed to the above-mentioned space environment from the moment when they are launched from the ground and enter space orbit, and due to the harsh conditions of the space environment, satellites may cause malfunctions in major parts, which ultimately fails mission. It can also lead to

In other words, the space environment is very different from the ground environment, so that satellites are normally operated on the ground at the time of manufacture. However, unexpected problems may arise in the case of satellites exposed to the harsh environment. will be.

For the reasons described above, satellites, etc., have undergone various preliminary tests (hereinafter referred to as 'space environmental tests') conducted under the same conditions as the actual space environment, and need to be checked in advance for major functions and operating conditions. have. The space environment simulation equipment used to conduct these space environment tests is called a thermal vacuum chamber.

Thermal vacuum chambers known to date largely include the configuration of a vacuum system and a thermal control system. The vacuum system is configured to maintain a high vacuum state by operating a vacuum pump provided separately to discharge the gas in the thermal vacuum chamber to the outside. In addition, the thermal control system is configured to simulate high temperature and cryogenic space temperature conditions through heat exchange with a satellite body mounted in a thermal vacuum chamber, and includes a heat exchanger commonly referred to as a shroud.

In particular, the shroud is a device that simulates the same or similar temperature conditions as the space environment by receiving nitrogen supplied from a separate source (eg LN2 tank) in a certain space to form a high temperature and cryogenic temperature conditions. To this end, the shroud is provided with a blower device connected through a pipe and configured to supply nitrogen at a set pressure and temperature conditions.

That is, the blower device used for the space environment test should have a function to smoothly supply and circulate fluid at high temperature (eg 100 ° C) and cryogenic temperature (eg -150 ° C) into the shroud. .

However, when the conventional conventional blower is driven at a low temperature, the shaft of the motor is exposed to the low temperature fluid as it is, so that the lubrication characteristic of the shaft is deteriorated, which is a cause of impairing driving performance. .

On the contrary, when the conventional conventional blower device is driven in a high temperature state, it causes a temperature rise to the electric component constituting the motor, which causes a problem that it cannot function properly or even becomes impossible to drive. .

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is to smoothly supply and circulate the fluid of high temperature as well as cryogenic conditions, such as satellite body under harsh experimental temperature conditions of space environment It is to provide a high temperature and cryogenic environment simulation blower with cooling means that can accurately simulate space environment test.

In addition, an object of the present invention is to provide a blower for high temperature and cryogenic environment with a cooling means capable of blocking the transfer of heat of the fluid in the scroll to the motor by inserting a thermal barrier between the motor housing and the scroll. It is.

In addition, an object of the present invention is a high temperature and cryogenic environment model having a heat sink installed at the front end of the rotor and a cooling means that can improve the cooling efficiency due to the rotation of the core fan (rear end) installed in the rear end. To provide a use blower.

In addition, an object of the present invention is to configure the heat exchange medium to circulate the outside of the stator, there is no need to provide a separate heat exchanger, or a casing for the heat exchanger, there is provided a cooling means that can be reduced to the size of the blower To provide a high temperature and cryogenic environment simulated blower.

In order to achieve the above object and a high temperature and cryogenic environment-driven blower equipped with a cooling means according to the present invention, a rotor for driving the rotary blades, the rotary blades, and the rotor blades, the outer side of the rotor And a stator comprising a coil positioned and wound and a motor housing, and cooling means for circulating the heat exchange medium outside the stator to cool the heat generated by the motor.

In addition, the cooling means of the high temperature and cryogenic environment-type blower provided with a cooling means according to the present invention is a water jacket (groove) is formed, the air jacket is formed on the outer side of the water jacket (groove) an air inlet and an outlet formed in the motor housing so as to communicate with the air jarket and the groove for the heat exchange medium, respectively.

In addition, the groove for the heat exchange medium of the blower for high temperature and cryogenic environment with a cooling means according to the present invention is characterized in that it is formed spirally from one end to the other end of the water jacket.

In addition, a thermal barrier is inserted between the motor housing and the rotor blade of the high temperature and cryogenic environment simulated blower provided with a cooling means according to the present invention.

In addition, the heat barrier of the high temperature and cryogenic environment simulated blower provided with the cooling means according to the present invention is characterized in that the air groove which can receive air on one surface forms a concentric circle.

In addition, a core fan is installed at the rear end of the rotor of the high temperature and cryogenic environment simulated blower provided with the cooling means according to the present invention, and circulates air in the motor housing.

The high temperature and cryogenic environment simulated blower equipped with the cooling means according to the present invention as described above can prevent the heat of the fluid in the scroll from being transferred to the motor by inserting a thermal barrier between the motor housing and the scroll. It has an effect.

In addition, the high temperature and cryogenic environment-type blower equipped with a cooling means according to the present invention is to improve the cooling efficiency due to the rotation of the heat dissipation element installed in the front end of the rotor, and the core fan (core fan) installed in the rear end. It can be effective.

In addition, the high temperature and cryogenic environment simulated blower equipped with a cooling means according to the present invention is configured so that the heat exchange medium circulates outside of the stator, so that there is no need for a separate heat exchanger or a casing for the heat exchanger. There is an effect that can be miniaturized to light weight.

In addition, the high temperature and cryogenic environment simulated blower equipped with a cooling means according to the present invention can smoothly supply and circulate fluid in a high temperature as well as a cryogenic state, so that the space environment, such as a satellite body, under harsh experimental temperature conditions of a space environment There is an effect that can accurately simulate the test.

1 is a perspective view showing a high temperature and cryogenic environment simulated blower equipped with a cooling means according to the present invention.
Figure 2 is an exploded perspective view showing a high temperature and cryogenic environment simulated blower equipped with a cooling means according to the present invention.
3 is a cross-sectional view showing a high temperature and cryogenic environment simulated blower with cooling means according to the present invention.
Figure 4 is an exploded perspective view showing the main configuration of the high temperature and cryogenic environment simulated blower provided with the cooling means of the present invention.
5 is an exploded perspective view showing the cooling means of the present invention.
Figure 6 is a side view showing a high temperature and cryogenic environment simulated blower with cooling means according to the present invention.

Hereinafter, preferred embodiments of the present invention will be described more specifically with reference to the accompanying drawings.

In the description of the present invention, the same or similar components are given the same or similar reference numerals, and detailed description thereof will be omitted.

The high temperature and cryogenic environment simulated blower equipped with the cooling means of the present invention is a part of the thermal vacuum chamber used for conducting a space environment test such as a satellite produced on the ground. In other words, in order to test in advance whether the satellite body or the like smoothly performs its intended function under the same temperature conditions as the actual space environment, a high temperature and cryogenic environment simulated blower equipped with the cooling means of the present invention is used.

1 is a perspective view showing a high temperature and cryogenic environment simulated blower with a cooling means according to the present invention, Figure 2 is an exploded perspective view showing a high temperature and cryogenic environment simulated blower with a cooling means according to the present invention. 3 is a cross-sectional view showing a high temperature and cryogenic environment simulated blower with cooling means according to the present invention.

And Figure 4 is an exploded perspective view showing the main configuration of the blower for high temperature and cryogenic environment with the cooling means of the present invention, Figure 5 is an exploded perspective view showing the cooling means of the present invention, Figure 6 is It is a side view which shows the high temperature and cryogenic environment simulated blower provided with the cooling means according to this.

As shown in Figure 1 to 6, the high temperature and cryogenic environment simulated blower equipped with a cooling means according to the present invention includes a scroll 100, a rotary wing 110, a motor 200 and a cooling means will be.

Specifically, a blower having a high temperature and cryogenic environment with a cooling means according to the present invention drives the rotor blade 110, the rotor blade 110, the rotor 230 coupled to the rotor blade 110 ( a motor 200 including a stator 240 formed of a rotor and a coil wound on the outside of the rotor 230 and the stator 240 to cool heat generated from the motor 200. It comprises a cooling means for circulating the heat exchange medium on the outside of the. The rotary blade 110 serves to generate wind power in a predetermined direction, it is coupled to the front end portion 231 to the rotor 230.

In addition, the rotary blade 110 may be manufactured of an aluminum material having excellent high temperature and low temperature characteristics.

The rotary blade 110 is composed of a plurality of blades, it is accommodated and mounted inside the scroll. In addition, the fluid inlet 101 is provided at one side of the scroll 100, and the fluid introduced by the driving of the rotary blade 110 is helically rotated and then discharged through the fluid discharge port 103.

The discharged fluid is supplied and circulated into a heat exchanger, commonly referred to as a shroud (not shown).

On the other hand, an airtight member 130 is disposed on the inner circumferential surface of the mount 201 located at the front end of the motor housing 210 to block the fluid flowing into the scroll 100 from flowing into the motor 200. In addition, the airtight member 130 is closely coupled to the outer circumferential surface of the front end portion 231 of the rotor to block the fluid moving through the rotary blade 110 from flowing into the motor.

The airtight member 130 is preferably a labyrinth seal.

The labyrinth seal 130 has a hollow ring shape, the inner circumferential surface of the labyrinth seal 130 is fixed to the outer circumferential surface of the rotor 230, and a tooth portion 131 is formed at an outer end thereof. The tooth portion 131 is formed by a plurality of teeth protruding uniformly along the outer circumferential surface.

The front end of the labyrinth seal 130 is in contact with the rotary blade 110 on the basis of the transverse direction, the rear end is in contact with the radiator 203. The outer end of the labyrinth seal is installed adjacent to the inner circumferential surface of the mount 201 based on the longitudinal direction.

The heat sink 203 serves to absorb and dissipate heat generated at the front end 231 of the rotor.

The radiator 203 is fixed to the front end portion 231 of the rotor and rotates together with the rotor 230. And the front end of the radiator 203 is in contact with the labyrinth seal 130, the rear end is fixed to the stepped 232 of the rotor 230.

A bearing is located between the heat sink 203 and the stepped portion 235 of the rotor.

In addition, a thermal barrier 120 may be inserted between the motor mount 201 and the rotor blade. The scroll 100, the mount 201, and the heat barrier wall 120 are coupled to each other by a fastening member such as a bolt.

The heat barrier 120 is not limited to the material as long as the heat insulating effect is excellent, a groove 121 that can accommodate air on one surface is formed.

Each of the grooves 121 forms a concentric circle to prevent the heat of the fluid inside the scroll from being transferred to the motor as much as possible.

The motor 200 drives the rotary blade 110, and a stator 240 including a rotor 230 coupled to the rotary blade 110 and a coil located outside the rotor 230 and wound. (stator).

The rotor 230 corresponds to a rotor that rotates by interaction with the stator 240, and the stator 240 is formed of a wound coil connected to an external power source. Since the rotor rotates due to electromagnetic induction occurring between the stator 240 and the rotor 230, a detailed description thereof will be omitted.

Cooling means according to the invention serves to maintain the performance of the motor by cooling the heat generated from the motor.

The cooling means includes a water jacket 250 in which a groove 251 for a heat exchange medium is formed, an air jacket 260 formed in an outer side of the water jacket 250, and the air jacket 260. Inlet 216 and outlet 215 formed in the motor housing 210 so as to communicate with the heat exchange medium groove 251, respectively.

The water jacket 250 covers the outer circumferential surface of the stator 240, and a groove 251 for a heat exchange medium is formed on the outer circumferential surface of the water jacket 250. Here, the heat exchange medium means a fluid such as cooling water, and the type thereof is not particularly limited.

The air jacket 260 is coupled to the outside of the groove 251 for the heat exchange medium, and the heat exchange medium moves in the space formed therein.

A groove is not formed on the inner circumferential surface of the air jacket 260, but a plurality of air grooves 261 are formed on the outer circumferential surface thereof in the longitudinal direction. The fluid (for example, air) blowing from the core fan 273 to be described later through the air groove 261 is circulated inside the motor.

A motor housing 210 is positioned outside the air jacket 260, and the heat exchange medium inlet 216 and the heat exchange medium outlet communicate with one end and the other end of the heat exchange medium groove 251, respectively. 215 is formed.

The inlet pipe (not shown) and the outlet pipe (not shown) are respectively installed in the heat exchange medium inlet 216 and the heat exchange medium outlet 215, and form a structure connected to an external heat exchange medium storage tank (not shown). can do.

The heat exchange medium groove 251 is preferably made of a spiral rotating in the circumferential direction from one end of the water jacket 250 to the other end.

Therefore, the heat generated from the stator 240 and the rotating rotor 230 is cooled by a heat exchange medium circulating outside the stator 240.

Specifically, the heat exchange medium is introduced into the heat exchange medium inlets 216 and 265, passes through the groove 251 helically formed in the circumferential direction, and is repeatedly discharged to the outside through the heat exchange medium outlets 215 and 263. While the heat inside the motor housing 210 is cooled.

By configuring the heat exchange medium to circulate the outside of the motor 200, specifically, the stator 240, it is not necessary to include a separate heat exchanger or to casing for the heat exchanger, and to reduce the size and weight of the blower. There is an advantage.

On the other hand, it is preferable that a core fan 273 (core fan) is installed at the rear end 233 of the rotor to circulate air in the motor housing 210. The core fan 273 is coupled to the rear end 233 of the rotor to rotate and create a flow of fluid (eg, air) toward the front end of the motor.

The movement of the fluid generated by the core fan 273 not only absorbs heat from the stator 240 and the rotor 230, but also promotes thermal contact or mixing of heat, thereby cooling efficiency by the heat exchange medium circulating along the groove. Will also be raised.

And since the core fan 273 is fixed to the rear end 233 of the rotor, it is possible to use the driving force of the rotor 230 for rotating the rotary blade 110 as it is to use energy efficiently.

An embodiment in which a sensor is provided in a high temperature and cryogenic environment simulated blower provided with cooling means according to an embodiment of the present invention will be described.

Referring to Figure 6, the blower of the present invention includes the configuration of the rotary blade 110, the motor 200, and the cooling means as described above, and additionally includes a leak sensor 280 and a temperature sensor (not shown) Can be installed.

The leak sensor 280 is responsible for detecting the leakage of the heat exchange medium circulating the groove 251. The leak sensor 280 may be installed inside the rear cover 274 located at the rear end of the motor.

Like the water level sensor, the temperature sensor may be understood as meaning that it is provided inside the motor and senses a temperature at which the motor generates heat, and monitors whether the temperature is generated above a set temperature.

In addition, each of the leak sensor and the temperature sensor is electrically connected to an emergency switch provided in the power supply unit. Thus, when the leakage of the heat exchange medium is detected from the leak sensor, or when a signal is detected that the temperature value measured from the temperature sensor exceeds the allowable temperature range, it can be configured to emergency cut off the power applied to the motor. This helps to maintain the device as well as to ensure the safety of the operator.

As described above, according to the present invention, it is possible to supply and circulate the fluid of the high temperature and cryogenic state into the shroud, thereby bringing the effect of relatively accurately simulating the space environment test of satellites and the like on the ground.

In particular, according to the high temperature and cryogenic environment simulated blowers provided with the cooling means of the present invention, it is possible to provide an improved internal structure in which the embedded motor and rotor do not directly contact high and low temperature fluids.

According to the improved structure as described above, the phenomenon that the lubrication function of the rotor can be prevented due to the influence of the cryogenic fluid, and the motor of the blower generates heat due to the influence of the high temperature fluid, resulting in poor driving performance or loss. Problems can be prevented.

That is, when the blower according to the present invention is used, the fluid to be supplied and circulated can be stably supplied and circulated according to the user's purpose, despite the severe temperature condition.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the invention. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Therefore, the true technical protection scope of the present invention will be defined by the technical spirit of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

100: scroll 101: fluid inlet
103: fluid discharge port 110: rotary blade
111: blade 120: heat barrier
121: groove 130: airtight member
131: tooth 200: motor
201: mount 203: heat sink
210: motor housing 211: motor shear flange
213: rear flange of the motor 215: heat exchange medium outlet
216: heat exchange medium inlet 230: rotor
231: front end of the rotor 233: rear end of the rotor
240: stator 241: leader
250: water jacket 251: groove for heat exchange medium
260: air jacket 261: air groove
263: heat exchange medium outlet 265: heat exchange medium inlet
270: bearing housing 271: core fan cover
273 core fan 274 rear cover
275 cover 280 leak sensor
281: leader line

Claims (6)

Rotary wing;
A motor including a rotor for driving the rotary blades and coupling with the rotary blades, a stator composed of a coil wound on the outer side of the rotor and a motor housing; And
And cooling means for circulating a heat exchange medium on the outside of the stator to cool the heat generated by the motor.
Wherein the cooling means comprises:
A water jacket in which grooves for heat exchange medium are formed;
An air jacket formed on the outside of the water jacket; And
An inlet and outlet formed in the motor housing so as to be in communication with the grooves for the heat exchange medium, respectively. delete The method of claim 1,
The heat exchange medium groove is blower for high temperature and cryogenic environment with a cooling means, characterized in that formed in a spiral from one end to the other end of the water jacket. The method of claim 1,
A high temperature and cryogenic environment simulation blower with cooling means, characterized in that a thermal barrier is inserted between the motor housing and the rotary blades. The method of claim 1,
The heat barrier blower having a high temperature and cryogenic environment with a cooling means, characterized in that the air groove that can receive air on one surface to form a concentric circle. The method of claim 1,
The rear end of the rotor has a core fan (core fan) is installed in the high temperature and cryogenic environment simulation blower with a cooling means, characterized in that for circulating the air in the motor housing.

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