KR200343567Y1 - 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 discharged 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 units having a trocoidal rotor are two trochoidal rotors which rotate in a mutually coupled state and pass the working fluid through the space between the opposing surfaces to compress the working fluid, and It comprises a casing for hermetically receiving the trocoidal rotor. The trocoidal rotor is a rotor in which a trocoid gear is formed on the inner and outer circumferential surfaces that face each other.

The conventional compressor unit includes a first rotor having a trocoid 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 the first rotor on an inner circumferential surface thereof. And a second rotor having a trocoid gear tooth engaged with the gear teeth 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 sucking and 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 was created in order to solve the above problems, and by configuring the trocoidal rotor in threefold, two-stage compression of the working fluid is possible, and the working fluid can be sent at high pressure, and the suction and discharge amount of the working fluid are 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.

1 is a view illustrating 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

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 fixed to 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; 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. In addition, the compressor for achieving the above object comprises a plurality of trochoidal gears formed on the outer circumferential surface thereof and a driving shaft fixed to the center of rotation thereof. 1 rotor; 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. And a driving unit configured to discharge the gas in a state in which it is discharged. The working fluid discharged through the first discharge port after being primarily 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 to each other by a connecting pipe so as to be guided to the second suction port and compressed secondly between the first rotor and the second rotor. In addition, the discharge port is provided on the side of the compressor unit. A compressed air tank for temporarily storing the compressed air discharged from the air is characterized in that it is further provided. Hereinafter, with reference to the accompanying drawings an embodiment according to the present invention 1 is a view for explaining a compressor unit constituting a 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 ) Is configured to include a trocoidal rotor assembly 113 composed of three trocoidal rotors 115, 117, and 119 engaged with each other, and a casing 111 for hermetically receiving the assembly 113 therein. do. The casing 111 is manufactured in a cylindrical shape having a predetermined diameter. The trocoidal rotor assembly 113 accommodates a first rotor 115 and the first rotor 115 in an eccentric position thereof. A second rotor 117 and a third rotor 119 for receiving the second rotor 117 in an eccentric position thereof. The first rotor 115 includes a driving shaft 114 to be described later. It is supported by the casing 111 and rotates. In addition, the third rotor 119 is provided on the inner circumferential surface of the casing 111 and the outer circumferential surface thereof is rotatably provided. In particular, the second rotor 117 is located in the space between the first rotor 115 and the third rotor 119 and is in line contact with the first rotor 115 inside and with the third rotor 119 outside. That is, in the assembly 113 of the present embodiment, the first rotor 115 and the second rotor 117 engage with each other and are in line contact with each other, as in the conventional trocoid gear pump. The third rotor 119 is also in line contact with the first rotor 119. The first, second, third rotors 115, 117, and 119 extend by the same length in the longitudinal direction of the driving shaft 114 and have a constant cross-sectional shape. Of course. In addition, as in the conventional pump having a conventional double trocoidal rotor, both ends of the first, second and third rotors (115, 117, 119) are packed with respect to the inner wall surface of the casing (111), the first rotor 115 and the first The space formed between the two rotors 117 and the inner wall surface of the casing 111 is sealed to the outside. Similarly, the space formed by the inner wall of the second rotor 117, the third rotor 119, and the casing 111 is also sealed to the outside. A driving shaft 114 is formed on the rotational central axis of the first rotor 115. It is fixed through. The drive shaft 114 extends in the longitudinal direction after completely penetrating the first rotor 115, and both ends thereof protrude a predetermined length out of the casing (111 in FIG. 2) as shown in FIG. 2. The drive shaft 114 penetrates the central axis of rotation of the first rotor 115 but is not in contact with or connected to the second rotor 117 or the third rotor 119. This configuration is the same as a pump having two trocoidal rotors that have been used for several decades, and the positional relationship between them is the same as in the present invention except that the rotor uses three more one. The shaft 114 receives the rotational 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. As the second rotor 117 is pushed to follow as 114 is forcibly rotated in the direction of the arrow a, and the third rotor 119 is driven to the second rotor 117 to follow, the area where the first suction port 121 is located is located. The inner space between the first rotor 115 and the second rotor 117 of the wider, and the inner space between the second rotor 117 and the third rotor 119 is widened so that the pressure is lowered to the external working fluid As the driving shaft 114 continues to rotate, the space between the first rotor 115 and the second rotor 117 becomes wider and then narrows closer to the second discharge port 127. At the same time, the space between the second rotor 117 and the third rotor 119 also becomes wider and narrower as it approaches the first discharge port 125. When the inner space is narrowed, the pressure of the inner working fluid rises, so that the working fluid is discharged through the first and second discharge ports 125 and 127. As described above, the narrowed inner space starts to widen again as it moves toward the first and second suction ports 121 and 123. Thus, the space between the rotors 115, 117 and 119 continues to expand and become narrower. This is because the rotation center axis of the second rotor 117 is eccentric with respect to the rotation center axis of, and the rotation center axis of the first rotor 115 is eccentric with respect to the rotation center axis of the second rotor 117. Of course. This operating mechanism itself is also the same as a conventional pump having two trocoidal rotors. The suctioned working fluid is discharged in a compressed state through the first and second discharge ports 125 and 127 and supplied to the demand destination. 3 and 4 are temporarily stored in the compressed air tank (131 in FIG. 3). In addition, since both ends of the drive 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 trocoidal teeth are formed on the outer circumferential surface of the first rotor 115, and each of the gear teeth is in between. The roots have a curved shape. The second rotor 117 is in the form of a hollow cylinder, and a trocoidal gear is formed on the inner and outer circumferential surfaces thereof. 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 trocoid 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 rotor is capable of relative movement and has a trocoidal gear on the inner circumference. 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 with the conventional trocoid gear system. Accordingly, the number of gear teeth formed in the third rotor 119 is eight, one more than that of the second rotor 117. On the other hand, one side of the drive shaft 114 in the casing 111 has a first, Two suction ports 121 and 123 are provided, and the first and second discharge ports 125 and 127 are provided at the other side. Each of the ports is a connection passage connecting the inside and the outside of the casing 111 to the first and second suction ports. Reference numerals 121 and 123 are passages for guiding external working fluid into the casing 111, and the first and second discharge ports 125 and 127 discharge 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 formed 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. At the point where it begins to open and its internal pressure drops. 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 (). Also, the first and second discharge ports 125 and 127 may include the first rotor 115, the second rotor 117 and the first rotor. The three rotors 119 are narrowed to each other and are located at a portion where the internal pressure rises. 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 are It depends 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 upstream, the working fluid is The working fluid can be expanded and discharged outwards at the moment it begins to be compressed. This means that the compressor unit can be used as a known expander. FIG. 2 is a side view of the compressor unit shown in FIG. 1. Referring to the drawings, the drive shaft 114 is a casing 111. 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 can drive a drive unit (100 in FIG. 2) such as a motor or an engine. 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 positioned at both sides. FIGS. 3 and 4 show an example of the configuration of the 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. Further, the first and second suction ports 121 and 123 are opened, and the first and second discharge ports 125 and 127 are both compressed air tanks 131. Is connected to. 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 destinations where compressed air is needed. In addition, since the first and second suction ports 121 and 123 are all opened as described above. The amount of intake air is so large that a large amount of compressed air can be discharged at one time. 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. 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 of the above configuration, when the drive shaft 114 is axially rotated through the driving unit 100, external air is sucked in first. Is sucked into port 121. The air sucked into the first suction port 121 is first compressed while rotating the casing 111 between the second rotor 117 and the third rotor 119 and then 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. In the case where it is not necessary to store the compressed air, the compressed air tank 131 does not need to be installed. FIG. 5 is a diagram illustrating the compression mechanism of the compressor shown in FIG. The operation mechanism of the compressor shown in FIG. 3 is to simultaneously suck the working fluid into the two suction ports and discharge the same to the two discharge ports. As shown in FIG. 5, when the driving shaft 114 is rotated, Accordingly, the assembly 113 rotates as a whole, during which the space between the first rotor 115 and the second rotor 117 and the second rotor 117 and the first and second suction ports 121 and 123 are located. The space between the three rotors 119 is opened. Therefore, the pressure between the first, second, third, and third rotors 115, 117, and 119 decreases, so that the external working fluid opens the first, second suction ports 121, 123, as shown in FIG. If the drive shaft 114 is continuously rotated in this state, the working fluid moves in a state trapped between the first, second, and third rotors 115, 117, and 119, as shown in FIG. 5B. Compressed and gradually close to the first and second discharge ports 125 and 127. As shown in Fig. 5C. As described above, when the working fluid moving in the confined state 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 supplied to the demand or compressed air. It is temporarily stored in the tank 131. The mechanism itself, which moves to the discharge port side in accordance with the rotation of the rotor, while the sucked working fluid is trapped between the first, second and third rotors, operates in a known trocoidal pump. It is like a fluid transfer mechanism. This mechanism is also known through Starrotor's homepage at http://www.starrotor.com. As described above, the working fluid moves in a trapped state between the first, second and third rotors. It is a matter of course that no flow path is provided between the ports 121 and 123 and the first and second discharge ports 125 and 127. FIG. 6 is a view illustrating the compression mechanism of the compressor shown in FIG. 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. The second compression in the casing 111 and finally discharged to the second discharge port 127. As shown in Figure 6a, by rotating the drive shaft 114 through the drive unit (100 in Figure 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. 6B and 6C. As described above with reference to FIG. 5, the working fluid moves in a confined space between the second rotor 117 and the third rotor 119. That is, the working fluid is moved by the rotation of the rotor while being trapped between the rotors 117 and 119, not through any flow passage. As shown in FIG. 6C, the first discharge port 125 reaches The working fluid exits the casing 111 through the first discharge port 125 and moves to the second suction port 123 through the connection pipe 141 of FIG. 4. The working fluid moved to 123 is sucked between the first rotor 115 and the second rotor 117 as shown in FIG. 6D and then the first rotor 115 and the first rotor in the state shown in FIG. 6E. It moves to the second discharge port 127 in the compressed state once again between the two rotors 117 and is discharged to the outside. (See FIG. 6F) A space between the first rotor 115 and the second rotor 117. The working fluid sucked into is moved by the rotation of the rotor in a state of being enclosed in a closed space between the first and second rotors 115 and 117. The principle of this fluid movement is the same as that of the known trocoidal pump. As described above, the compressor unit according to the present embodiment is characterized in that a high pressure compression force can be realized by increasing the discharge speed of the working fluid or by making the compression into two stages. Although the present invention has been described in detail through specific embodiments, the present invention is not limited to the above embodiments, and various modifications may be made by those skilled in the art within the scope of the technical idea of the present invention. Do.

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.

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 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. 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.