KR100530447B1 - Compressor unit having triple trochoidal rotor and Compressor having the compressor unit - Google Patents

Abstract

The present invention relates to a compressor unit having a triple trocoidal rotor and a compressor having the same. The compressor may include: first, second and third rotors in which trochoidal gears are meshed with each other; A casing configured to seal the first, second, and third rotors in a sealed manner to support the driving shaft of the first rotor in a state of protruding from the outside; First and second suction ports provided at the side of the drive shaft and positioned at a portion where the gears are opened when the first and second rotors rotate; A compressor unit including a second discharge port positioned at a portion where the gears are narrowed during rotation of the first, second and third rotors; Connected to the drive shaft and applying a rotary torque to the drive shaft to rotate the first, second, third rotor to allow the external working fluid to be sucked into the suction port and the working fluid that was sucked into the suction port is compressed. It has a configuration including a drive unit to be discharged in a state.

According to the present invention, the compressor unit is composed of a triple trocoidal rotor, which enables two-stage compression of the working fluid, which allows the working fluid to be sent at high pressure, as well as the suction and discharge amount of the working fluid. High pressure compression performance can be provided.

Description

Compressor unit having a triple trocoidal rotor and a compressor having the same {Compressor unit having triple trochoidal rotor and Compressor having the compressor unit}

The present invention relates to a compressor unit having a triple trocoidal rotor and a compressor having the same.

Compressor unit having a trocoidal rotor includes two trochoidal rotors which rotate in a mutually coupled state and pass the working fluid therebetween to compress the working fluid, and the trocoidal rotor It is comprised including the casing which accommodates. The trocoidal rotor is a rotor in which a trocoidal gear is formed on the inner and outer peripheral surfaces thereof.

The conventional compressor unit includes a first rotor having a trocoidal tooth formed on an outer circumferential surface thereof, and receiving the first rotor at a position eccentric with respect to a rotational central axis thereof. And a second rotor having a trocoidal gear tooth engaged with the gear teeth of the rotor and in line contact with the first rotor, and a casing for hermetically housing the first and second rotors.

The conventional compressor unit configured as described above has a basic mechanism for changing the volume between the first rotor and the second rotor and thus suction compressing and discharging the fluid. It has been used as a fluid pump for decades because its structure is relatively simple and can be miniaturized.

However, since the conventional compressor unit uses only two rotors, the compression ratio is limited. That is, even if the rotational torque of the first rotor is increased as much as possible, the working fluid is discharged every time the first rotor is rotated, so that the pressure of the working fluid discharged is not higher than any other. Therefore, it is limited in the use of the place where high lift is required any more, and the discharge rate is also limited, which does not provide the performance of the high-speed pumping.

The present invention has been made to solve the above problems, and by configuring the trocoidal rotor in three, the two-stage compression of the working fluid is possible to send the working fluid at high pressure, as well as the suction and discharge amount of the working fluid is increased An object of the present invention is to provide a compressor unit having a triple trocoidal rotor capable of providing high speed high pressure compression performance and a compressor having the same.

In order to achieve the above object, the compressor unit of the present invention includes: a first rotor having a plurality of trochoidal gears formed on an outer circumferential surface thereof, and a driving shaft of which is fixed to a rotation center thereof; The first rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is meshed with the gears of the first rotor and is in line contact with the first rotor, wherein the trocoidal gear is the number of teeth of the first rotor. A second rotor having one more gear teeth and having the same number of trocoidal gear teeth as the inner circumferential surface; The second rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is engaged with the gears of the outer circumferential surface of the second rotor and is in linear contact, wherein the trocoidal gear is one more than the number of second rotor gears. A third rotor having many gears; A casing for rotatably supporting the first, second and third rotors to rotatably support the drive shaft of the first rotor in a state of protruding outward; A first suction port provided at a side of the drive shaft to connect the inside and the outside of the casing, and located at a portion where a gear of the first rotor and an inner gear of the second rotor are opened when the first, second and third rotors rotate; A second suction port positioned at a portion where the outer gear of the second rotor and the gear of the third rotor are opened; When the first, second and third rotors rotate, the first discharge port and the outer gears of the second rotor and the gears of the third rotor, which are provided at a portion where the gears of the first rotor and the inner gear of the second rotor become narrow, become narrow. And a second discharge port positioned at the site.

In addition, the compressor for achieving the above object is a plurality of trochoidal (trochoidal) gear is formed on the outer peripheral surface and the rotational center of the first rotor is fixed to the drive shaft; The first rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is meshed with the gears of the first rotor and is in line contact with the first rotor, wherein the trocoidal gear is the number of teeth of the first rotor. A second rotor having one more gear teeth and having the same number of trocoidal gear teeth as the inner circumferential surface; The second rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is engaged with the gears of the outer circumferential surface of the second rotor and is in linear contact, wherein the trocoidal gear is one more than the number of second rotor gears. A third rotor having many gears; A casing for rotatably supporting the first, second and third rotors to rotatably support the drive shaft of the first rotor in a state of protruding outward; A first suction port provided at a side of the drive shaft to connect the inside and the outside of the casing, and located at a portion where a gear of the first rotor and an inner gear of the second rotor are opened when the first, second and third rotors rotate; A second suction port positioned at a portion where the outer gear of the second rotor and the gear of the third rotor are opened; When the first, second and third rotors rotate, the first discharge port and the outer gears of the second rotor and the gears of the third rotor, which are provided at a portion where the gears of the first rotor and the inner gear of the second rotor become narrow, become narrow. A compressor unit having a triple trocoidal rotor comprising a second discharge port positioned at the site; Connected to the drive shaft and applying a rotary torque to the drive shaft to rotate the first, second, third rotor to allow the external working fluid to be sucked into the suction port and the working fluid that was sucked into the suction port is compressed. It has a configuration including a drive unit to be discharged in a state.

In addition, the first and second rotors are driven into the second suction port by guiding the working fluid discharged through the first discharge port after being first compressed between the second and third rotors by being sucked into the first suction port. The first discharge port and the second suction port are connected by a connecting pipe so as to be second compressed therebetween.

In addition, the side of the compressor unit is characterized in that the compressed air tank for temporarily storing the compressed air discharged from the discharge port is further provided.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a view showing for explaining the compressor unit constituting the compressor according to an embodiment of the present invention first.

Referring to the drawings, the compressor unit 110 in the compressor according to the present embodiment, the trocoidal rotor assembly 113 is composed of the three trocoidal rotors (115, 117, 119) are engaged with each other, the assembly ( And a casing 111 for hermetically receiving 113 therein. The casing 111 is manufactured in a cylindrical shape having a predetermined diameter.

The trocoidal rotor assembly 113 may include a first rotor 115, a second rotor 117 for receiving the first rotor 115 in an eccentric position thereof, and the second rotor 117. It consists of a third rotor (119) for receiving in the inner eccentric position.

In addition, the first rotor 115 and the second rotor 117 are in line contact with each other and at the same time in line contact with each other, as in the conventional trocoidal gear pump, the third rotor 119 with respect to the second rotor 117 ) Are also in line contact with each other.

The drive shaft 114 is penetrated and fixed to the central axis of rotation of the first rotor 115. The drive shaft 114 extends in the longitudinal direction after completely passing through the first rotor 115, and both ends thereof protrude a predetermined length out of the casing (111 in FIG. 2) as shown in FIG.

The drive shaft 114 receives the rotation torque from the external drive unit (100 in FIG. 3) and rotates in the direction of arrow a. As the drive shaft 114 rotates as described above, the first, second, and third rotors 115, 117, and 119 follow, and the working fluid is sucked into the first, second, and second suction ports 121, 123 to be described later.

The working fluid sucked as described above is discharged in a compressed state through the first and second discharge ports 125 and 127 and supplied to the demand destination or temporarily stored in the compressed air tank (131 of FIG. 3) as shown in FIGS. 3 and 4. do.

In addition, since both ends of the driving shaft 114 pass through the casing 111 and the outer circumferential surface thereof is supported by the casing 111, the center of rotation of the first rotor 115 is always kept constant.

On the other hand, in the present embodiment, all six trocodal gear teeth are formed on the outer circumferential surface of the first rotor 115, and the tooth root between each gear teeth has a curved shape.

In addition, the second rotor 117 takes the form of a hollow cylinder and is formed with a trocoidal gear on its inner and outer circumferential surfaces. The gear teeth formed on the inner circumferential surface of the second rotor 117 are engaged with the gear teeth formed on the first rotor 115 and are in line contact, and the number thereof is seven more than one of the first rotor. The first rotor 115 and the second rotor 117 have the same engagement structure and operation mechanism as the known trocoidal gear. In addition, the trocoidal gear teeth formed on the outer circumferential surface of the second rotor 117 correspond to the gear teeth formed on the inner circumferential surface and have the same number.

The third rotor 119 is a rotor whose outer circumferential surface is capable of relative movement with respect to the casing 111, and a trocoidal gear is formed on the inner circumferential surface. The gear teeth formed in the third rotor 119 maintain the engagement state of the gear teeth formed on the outside of the second rotor and the conventional trocoidal gear system. In addition, the number of gear teeth formed in the third rotor 119 is eight more than one of the second rotor 117.

Meanwhile, the first and second suction ports 121 and 123 are provided at one side of the drive shaft 114 and the first and second discharge ports 125 and 127 are provided at the other side of the casing 111.

Each port is a connection passage connecting the inside and the outside of the casing 111, and the first and second suction ports 121 and 123 are passages for guiding the external working fluid into the casing 111, and the first and second discharge ports. 125 and 127 are passages for discharging the working fluid compressed in the casing 111 to the outside of the casing 111.

The first and second suction ports 121 and 123 are spaced apart from each other between the first rotor 115, the second rotor 117, and the third rotor 119 when the driving shaft 114 rotates in the arrow a direction. It is located at the place where it starts to lose its internal pressure. Thus, for example, when the driving shaft 114 rotates in the direction of arrow a, the working fluid flows between the first rotor 115 and the second rotor 117 through the second suction port 123 and the first suction port 121. It may be introduced between the second rotor 117 and the third rotor 119 through the ().

In addition, the first and second discharge ports 125 and 127 are located at a portion where the internal pressure increases due to narrowing between the first rotor 115, the second rotor 117, and the third rotor 119. The working fluid introduced into the first and second suction ports 121 and 123 is compressed according to the axial rotation of the driving shaft 114, and the working fluid between the first rotor 115 and the second rotor 117 is the second discharge port. 127 is discharged through, and the working fluid between the second rotor 117 and the third rotor 119 is discharged through the first discharge port (125).

The position and the flow cross-sectional area of the suction port and the discharge port depend on the shape and size of each gear, and in particular, the output of the compressor unit can be adjusted when the position and the flow cross-sectional area are adjusted.

In addition, when the positions of the first and second discharge ports 125 and 127 are moved upward, the working fluid may be expanded and discharged to the outside at the moment when the working fluid starts to be compressed. This means that the compressor unit can be used as an expander.

2 is a side view of the compressor unit shown in FIG.

Referring to the drawings, the drive shaft 114 penetrates through the casing 111 and both ends thereof protrude forward and backward of the casing 111. In this way, since the drive shaft 114 extends outside the casing 111, the drive shaft 114 may drive a drive unit (100 in FIG. 2) such as a motor or an engine.

In addition, it can be seen that the first and second suction ports 121 and 123 and the first and second discharge ports 125 and 127 are located at both sides of the driving shaft 114.

3 and 4 is a configuration diagram showing an example of the configuration of a compressor according to an embodiment of the present invention.

Referring to FIG. 3, it can be seen that the drive shaft 114 of the compressor unit 110 is connected to the drive unit 100. The drive unit 100 is a motor or an engine capable of providing torque.

In addition, the first and second suction ports 121 and 122 are all opened, and the first and second discharge ports 125 and 127 are connected to the compressed air tank 131. The compressed air tank 131 serves to temporarily store the compressed gas discharged from the compressor unit 110, and may not be installed according to the embodiment. When the compressed air tank 131 is not installed, the first and second discharge ports 125 and 127 are directly connected to the demand destination of the compressed air.

In addition, since both of the first and second suction ports 121 and 123 are opened as described above, the amount of the suction air is large enough to discharge a large amount of compressed air at once. The compressor configured in this way is suitable for a place where a large amount of compressed air is required in a limited time. In addition, as described above, detailed driving mechanisms of the first, second and third rotors in the compressor unit 110 in which the first and second suction ports 121 and 123 and the first and second discharge ports 125 and 127 are opened are shown in FIG. 5. It will be described later through.

4, it can be seen that the first discharge port 125 is connected to the second suction port 123 through the connection pipe 141. In addition, the second discharge port 127 is connected to the compressed air tank 131.

In the case configured as described above, when the driving shaft 114 is axially rotated through the driving unit 100, external air is sucked into the first suction port 121. The first suction port 12 sucked air is first compressed while rotating the casing 111 between the second rotor 117 and the third rotor 119 and is discharged through the first discharge port 125.

The compressed air discharged to the first discharge port 125 moves to the second suction port 123 through the connection pipe 141. The compressed air moved to the second suction port 123 is compressed once again between the first rotor 115 and the second rotor 117 and discharged to the outside of the casing 111 through the second discharge port 127.

As described above, the compressed gas discharged to the second discharge port 127 moves to the compressed air tank 131 and is temporarily stored. If there is no need to store the compressed air, of course, the compressed air tank 131 does not need to be installed.

FIG. 5 is a diagram illustrating the compression mechanism of the compressor illustrated in FIG. 3. The operation mechanism of the compressor shown in FIG. 3 is to simultaneously suck the working fluid into two suction ports and discharge the same to two discharge ports.

As shown in FIG. 5, when the driving shaft 114 rotates, the assembly 113 is rotated as a whole, and during this time, the first rotor 115 and the first rotor 115 in the portion where the first and second suction ports 121 and 123 are positioned. The space between the two rotors 117 and the space between the second rotor 117 and the third rotor 119 are opened.

Accordingly, the pressure between the first, second, and third rotors 115, 117, and 119 is lowered so that an external working fluid flows into the casing 111 through the first, second, and second suction ports 121 and 123, as shown in FIG.

If the drive shaft 114 continues to rotate in the above state, the working fluid rotates in a state trapped between the first, second and third rotors 115, 117, and 119, as shown in FIG. 5B, and is compressed and the first and second discharge ports 125,127. Gradually closer to the

As shown in FIG. 5C, when the working fluid, which is moved between the rotors 115, 117, and 119, finally reaches the first and second discharge ports 125 and 127, the working fluid is simultaneously discharged through both discharge ports 125 and 127, and is placed in demand. It is supplied or temporarily stored in the compressed air tank 131.

FIG. 6 is a view illustrating the compression mechanism of the compressor illustrated in FIG. 4. Basically, the operation mechanism of the compressor unit illustrated in FIG. 4 is configured to first suck the working fluid into the first suction port 121 and compress the first fluid, and then through the first discharge port 125 and the second suction port 123. By the second compression in the casing 111 and finally discharged to the second discharge port (27).

As shown in FIG. 6A, when the driving shaft 114 is rotated through the driving unit 100 of FIG. 4, an external working fluid moves into the casing 111 through the first suction port 121. The working fluid moved into the casing 111 through the first suction port 121 moves toward the first discharge port 125 in a state of being trapped between the second rotor 117 and the third rotor 119. Compressed (see Figs. 6B and 6C).

As shown in FIG. 6C, the working fluid reaching the first discharge port 125 exits the casing 111 through the first discharge port 125 and through the connection pipe 141 of FIG. 4. Move to the second suction port 123.

The working fluid moved to the second suction port 123 as described above is sucked between the first rotor 115 and the second rotor 117 as shown in FIG. 6D and then the It is moved between the first rotor 115 and the second rotor 117 to the first discharge port 127 in a compressed state and discharged to the outside (see FIG. 6F).

As described above, the compressor unit according to the present embodiment has a feature capable of realizing a high pressure compression force by increasing the discharge speed of the working fluid or making the compression into two stages.

As mentioned above, although this invention was demonstrated in detail through the specific Example, this invention is not limited to the said Example, A various deformation | transformation is possible for a person with ordinary knowledge within the scope of the technical idea of this invention.

The present invention made as described above, the three-stage compression of the working fluid is possible by configuring the trocoidal rotor to be able to send the working fluid at high pressure, as well as to increase the suction amount and discharge amount of the working fluid high-speed high-pressure compression performance Can be provided.

1 is a view showing a compressor unit having a triple trocoidal rotor and a compressor unit in a compressor having the same according to an embodiment of the present invention.

2 is a side view of the compressor unit shown in FIG.

3 and 4 is a configuration diagram showing an example of the configuration of a compressor according to an embodiment of the present invention.

FIG. 5 is a view illustrating the compression mechanism of the compressor shown in FIG.

FIG. 6 is a view illustrating the compression mechanism of the compressor illustrated in FIG. 4.

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

100: drive unit 110: compressor unit

111: casing 113: trocoidal rotor assembly

114: drive shaft 115: first rotor

117: second rotor 119: third rotor

121: first suction port 123: second suction port

125: first discharge port 127: second discharge port

131: compressed air tank 141: connection pipe

Claims (4)

A first rotor having a plurality of trochoidal gears formed on an outer circumferential surface thereof and having a drive shaft fixed thereto at a center of rotation thereof; The first rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is meshed with the gears of the first rotor and is in line contact with the first rotor, wherein the trocoidal gear is the number of teeth of the first rotor. A second rotor having one more gear teeth and having the same number of trocoidal gear teeth as the inner circumferential surface; The second rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is engaged with the gears of the outer circumferential surface of the second rotor and is in linear contact, wherein the trocoidal gear is one more than the number of second rotor gears. A third rotor having many gears; A casing for rotatably supporting the first, second and third rotors to rotatably support the drive shaft of the first rotor in a state of protruding outward; It is provided on the drive shaft side to connect the inside and the outside of the casing, When the first, second and third rotors rotate, the second suction port located at the site where the gears of the first rotor and the inner gear of the second rotor are opened, A first suction port positioned; When the first, second and third rotors are rotated, the second discharge port provided at a portion where the gears of the first rotor and the inner gear of the second rotor are narrowed and the gears of the outer gear and the third rotor of the second rotor are narrowed. Compressor unit having a triple trocoidal rotor comprising a first discharge port located in the site. A first rotor having a plurality of trochoidal gears formed on an outer circumferential surface thereof and having a drive shaft fixed thereto at a center of rotation thereof; The first rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is meshed with the gears of the first rotor and is in line contact with the first rotor, wherein the trocoidal gear is the number of teeth of the first rotor. A second rotor having one more gear teeth and having the same number of trocoidal gear teeth as the inner circumferential surface; The second rotor is eccentrically accommodated therein, and an inner circumferential surface thereof is provided with a trocoidal gear which is engaged with the gears of the outer circumferential surface of the second rotor and is in linear contact, wherein the trocoidal gear is one more than the number of second rotor gears. A third rotor having many gears; A casing for rotatably supporting the first, second and third rotors to rotatably support the drive shaft of the first rotor in a state of protruding outward; It is provided on the drive shaft side to connect the inside and the outside of the casing, When the first, second, and third rotors rotate, the second suction port is located at the portion where the gears of the first rotor and the inner gear of the second rotor are opened, and the portion at which the gears of the outer gear and the third rotor of the second rotor are opened. A first suction port positioned; When the first, second and third rotors are rotated, the second discharge port provided at a portion where the gears of the first rotor and the inner gear of the second rotor are narrowed and the gears of the outer gear and the third rotor of the second rotor are narrowed. A compressor unit having a triple trocoidal rotor comprising a first discharge port positioned at the site; Connected to the drive shaft and applying a rotary torque to the drive shaft to rotate the first, second, third rotor to allow the external working fluid to be sucked into the suction port and the working fluid that was sucked into the suction port is compressed. Compressor comprising a drive unit to be discharged in a state. The method of claim 2, The hydraulic fluid sucked into the first suction port and first compressed between the second rotor and the third rotor and then discharged through the first discharge port is guided to the second suction port to between the first rotor and the second rotor. And a first discharge port and a second suction port are connected by a connecting pipe so as to be second compressed. The method of claim 2 or 3, Compressor, characterized in that the side of the compressor unit further comprises a compressed air tank for temporarily storing the compressed air discharged from the discharge port.