US20130236345A1 - Compressor unit including gear rotor and compressor system using the same - Google Patents
Compressor unit including gear rotor and compressor system using the same Download PDFInfo
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- US20130236345A1 US20130236345A1 US13/414,253 US201213414253A US2013236345A1 US 20130236345 A1 US20130236345 A1 US 20130236345A1 US 201213414253 A US201213414253 A US 201213414253A US 2013236345 A1 US2013236345 A1 US 2013236345A1
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- Prior art keywords
- rotor
- gear teeth
- trochoidal gear
- trochoidal
- outwardly extending
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
- F04C23/001—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids of similar working principle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/30—Casings or housings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/02—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for several pumps connected in series or in parallel
Definitions
- the present invention relates to a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure, and the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability, and a compressor system using the same.
- a compressor unit having a trochoidal rotor includes two gear rotors that are rotated in a state of being engaged with each other to cause working fluid to pass through therebetween to compress the working fluid, and a casing that accommodates the gear rotors therein.
- the trochoidal rotor is a rotor or gear rotor having trochoidal gear teeth formed on the inner and outer peripheral surfaces thereof.
- the above conventional compressor unit includes: a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof; a second rotor that accommodates the first rotor at an eccentric position relative to rotary center axis thereof therein and has a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor; and a casing that sealing accommodates the first and second rotors therein.
- the conventional compressor unit as constructed above has a basic operation mechanism in which fluid is sucked and compressed, and is discharged depending on a change in the volume between the first rotor and the second rotor.
- This compressor unit is relatively simple in structure and can be made small-scale, and thus has been used as a fluid pump over the past few decades.
- such a conventional compressor unit has a limitation in that it employs only two rotors. That is, although a torque of the first rotor is increased, the working fluid is discharged each time when the first rotor is rotated by one turn, and thus the pressure of the discharged working fluid is not high above a given level. Therefore, the use of the compressor unit is limited at a place where more than a given head is required. In addition, a discharge speed of the fluid is limited, and thus high-speed pumping capability is not provided.
- a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that the working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure, and the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability, and a compressor system using the same.
- the present invention has been made in order to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that the working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure, and a compressor system using the same.
- Another object of the present invention is to provide a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability, and a compressor system using the same.
- a compressor unit includes a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof and a stationary shaft securely fixed to a rotary center thereof; a second rotor configured to eccentrically accommodate the first rotor therein, the second rotor having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor, and a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof, wherein the number of the inwardly extending trochoidal gear teeth of the second rotor is larger than that of the outwardly extending trochoidal gear teeth of the first
- a compressor system in accordance with another aspect of the present invention, includes a compressor unit including a triple trochoidal rotor, the compressor unit including a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof and a stationary shaft securely fixed to a rotary center thereof; a second rotor configured to eccentrically accommodate the first rotor therein, the second rotor having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor, and a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof, wherein the number of the inwardly extending trochoidal gear teeth of the second
- the first discharge port and the second suction port may be fluidically connected to the connection pipe or the inside of the compressor front cover such that the working fluid primarily compressed between the second rotor and the third rotor after being sucked into the first suction port and then primarily discharged through the first discharge port is induced to the second suction port to cause the working fluid to be secondarily compressed between the first rotor and the second rotor, and the primarily discharged fluid is cooled and then is sucked into the second suction port to lower the temperature of the fluid discharged to the second discharge port.
- the compressor unit may further include a suction resistance preventing slot formed in a compressor cover that fixes a central rotary shaft of the first rotor to an external cover upon the rotation of the first, second and the third rotors, in such a manner as to extend from the first and second suction ports; a residue compressed gas rotation resistance preventing slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports; and a compression ratio adjustment slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports.
- the compressor unit including a triple trochoidal rotor may be applied to industrial compressors, two-stage expanders, two-stage fluid pumps, vacuum pumps, companders (combined compressors and expanders), and expander pumps (external expanders and internal pumps).
- FIG. 1 is a view illustrating a compressor unit including a gear rotor in accordance with an embodiment of the present invention
- FIG. 2 is a view illustrating the construction of a front cover of the construction of a front cover of the compressor unit shown in FIG. 1 ;
- FIG. 3 is a view illustrating the construction of a rotor of the compressor shown in FIG. 1 ;
- FIG. 4 is a view illustrating a side of the compressor shown in FIG. 1 ;
- FIG. 5 is a block diagram illustrating the construction of a compressor system including a gear rotor accordance with an embodiment of the present invention
- FIG. 6 shows a compression mechanism of the compressor system shown in FIG. 5 ;
- FIG. 7 shows another embodiment of a compression mechanism of the compressor system shown in FIG. 5 .
- FIG. 1 is a view illustrating a compressor unit including a gear rotor in accordance with an embodiment of the present invention
- FIG. 2 is a view illustrating the construction of a front cover of the construction of a front cover of the compressor unit shown in FIG. 1
- FIG. 3 is a view illustrating the construction of a rotor of the compressor shown in FIG. 1
- FIG. 4 is a view illustrating a side of the compressor shown in FIG. 1
- FIG. 5 is a block diagram illustrating the construction of a compressor system including a gear rotor accordance with an embodiment of the present invention.
- a compressor unit 12 includes a trochoidal rotor assembly 18 in which three trochoidal rotors 14 , 13 and 15 are engaged with each other, and a casing 17 that sealingly accommodates the assembly 18 therein.
- the casing 17 is fabricated in a cylindrical shape having a predetermined diameter.
- the trochoidal rotor assembly 18 includes a first rotor 15 , a second rotor 14 that accommodates the first rotor 15 at an eccentric position therein, and a third rotor 13 that accommodates the second rotor 14 at an eccentric position therein.
- first rotor 15 and the second rotor 14 are engaged with each other, and simultaneously are in line contact with each other.
- the third rotor 13 is in line contact with the second rotor 14 while being engaged with the second rotor 14 .
- a stationary shaft is securely fixed to a front cover 19 of the compressor unit by a shaft center 16 at a rotary center axis of the first rotor 15 .
- a driving shaft 20 extends in a longitudinal direction in a state of being joined to the third rotor 13 such that the driving shaft 20 is protruded to the outside of the casing 17 by a predetermined length while passing through the casing 17 as shown in FIG. 4 .
- the driving shaft 20 is axially rotated by receiving a torque from an external driving unit 21 such that the first, second and third rotors 15 , 14 , and 13 are rotated together with the driving shaft 20 .
- the driving unit 21 is a motor or engine that can provide a torque.
- first and second suction ports 1 and 3 are all opened, and a second discharge port 8 is fluidically connected to an oil separator and oil tank 22 .
- Fluid discharged upon the rotation of the first, second and third rotors increases the internal pressure of the oil separator and oil tank 22 through a second discharge port 8 to cause lubricant oil contained in the oil separator and oil tank 22 to be supplied the third and second rotors 13 and 14 through a lubricant oil injection port 11 .
- the oil separator and oil tank 22 is connected to the compressed air storage tank 23 .
- the compressed air storage tank 23 serves to temporarily store the compressed gas discharged from the compressor unit 12 , and may not be installed according to embodiments.
- the oil separator and oil tank 22 is directly connected to a demand place requiring compressed air by a connection pipe 24 for discharge of air.
- the connection between the second suction port 3 and the first discharge port 5 is interrupted, and the first suction port 1 and the second suction port 3 are fluidically connected to each other and the second discharge port 8 and the first discharge port 5 are fluidically connected to each other such that low-pressure air is used in a one-stage compression manner.
- the compressor unit as constructed above is suitable for a demand place requiring a large quantity of low-pressure and high-pressure compressed air for a limited time period. Further, as described above, low-pressure and high-pressure compressed air can be simply produced through the fluidical connections between the first and second suction ports 3 and 1 , and between the first and second discharge ports 5 and 8 .
- the detailed driving mechanism of the first, second and third rotors included in the compressor unit 12 will be described later with reference to FIG.6 .
- the first discharge port 5 is fluidically connected to the second suction port 3 through the connection pipe 24 .
- the second discharge port 8 is connected to the oil separator and oil tank 22 , and is connected to the compressed air storage tank 23 through the connection pipe 24 .
- the driving shaft 20 when the driving shaft 20 is axially rotated by the driving unit 21 , external air is sucked into the first suction port 1 .
- the air sucked into the first suction port 1 flows along a first suction port slot 2 penetratingly formed in the front cover 19 of the compressor unit to cause the sucked air to be supplied in a maximum amount supplied between the third rotor 13 and the second rotor 14 without any fluid resistance as shown in FIGS. 2 to 4 .
- the first suction port slot 2 of the front cover 19 is used to prevent resistance of the sucked air.
- the sucked air is primarily compressed while being circulated in the inside of the casing 17 between the second rotor 14 and the third rotor 13 , and then is discharged through the first discharge port 5 .
- the compressed gas first reaches a compression ratio adjustment slot 6 of the first discharge port 5 before reaching the first discharge port 5 .
- the aim of the compression ratio adjustment slot 6 is to adjust the compression ratio of the compressed air, the amount of air discharged primarily, and the amount of air sucked secondarily.
- the length of the compression ratio adjustment slot 6 varies depending on the adjustment amount of the compressed air.
- a compressed air resistance preventing slot 7 for the first discharge port 5 is penetratingly formed in the front cover 19 of the compressor unit so as to prevent compression of air remained after being discharged through the first discharge port 5 as shown in FIG. 2 .
- the aim of the compressed air resistance preventing slot 7 is to smoothly discharge lubricant oil supplied while receiving rotation resistance of the rotors by compression of the compressed air that is not totally discharged from the first discharge port 5 .
- the compressed air discharged through the first discharge port 5 is moved to the second suction port 3 through the connection pipe 24 , and is sucked between the second rotor and the first rotor along a second suction port slot 4 penetratingly formed therein without any fluid suction resistance as shown in FIGS. 2 and 4 .
- the aim of the second suction port slot 4 is to prevent suction resistance of the sucked compressed air.
- the sucked compressed air is again compressed between the first rotor and the second rotor, and reaches a compression ratio adjustment slot 9 of the second discharge port 8 .
- the aim of the compression ratio adjustment slot 9 is to adjust the compression ratio.
- the compressed air is discharged to the second discharge port 8 via the compression ratio adjustment slot 9 , and the compressed air and oil that is not discharged but remained in the compression ratio adjustment slot 9 is discharged through a compressed air resistance preventing slot 10 for the second discharge port 8 .
- the aim of the compressed air resistance preventing slot 10 for second discharge port is to remove rotation resistance of the rotors by compression of the compressed air and oil that is remained and to smoothly rotate the rotors.
- the internal pressure of the oil separator and oil tank 22 is increased to cause the lubricant oil contained in the oil separator and oil tank 22 to be supplied between the third rotor and the second rotor through the oil injection port 11 of the compressor front cover 19 .
- the inside of the oil separator and oil tank 22 become a vacuum state to cause the lubricant oil to be smoothly supplied between the third rotor and the second rotor due to the internal pressure of the oil separator and oil tank 22 .
- the compressed air collected in the oil separator and oil tank 22 is moved to and is temporarily stored in the compressed air storage tank 23 through the connection pipe 24 .
- the compressed air needs not to be stored in the compressed air storage tank 23 , it may not be installed.
- FIG. 6 shows a compression mechanism of the compressor system shown in FIG. 5 .
- the operation mechanism of the compressor unit shown in FIG. 5 is as follows. Working fluid is simultaneously sucked into two suction ports and is simultaneously discharged to two discharge ports.
- FIG. 7 shows another embodiment of a compression mechanism of the compressor unit shown in FIG. 5 .
- the operation mechanism of the compressor unit shown in FIG. 5 is basically, as follows. First, working fluid is allowed to be sucked into the first suction port 1 so as to be primarily compressed, and then is secondarily compressed in the casing 17 via the first discharge port 5 and the second suction port 3 . Then, the working fluid is finally discharged to the second discharge ports 8 .
- the working fluid that has reached the first discharge port 5 escapes to the outside through the first discharge port 5 and is moved to the second suction port 3 through the connection pipe 24 .
- the working fluid moved to the second suction port 3 is sucked between the first rotor 15 and the second rotor 14 as shown FIG. 7 d.
- the sucked working fluid is again compressed between the first rotor 15 and the second rotor 14 , and then is moved to the second discharge ports 8 so as to be discharged to the outside (see FIG. 7 f ).
- the compressor unit can increase the discharge speed of the working fluid or can compress the working fluid in a two-stage compression manner to implement a high-speed, high-pressure compression capability.
- the compressor unit including a gear rotor and the compressor system using the same as described above can be applied to industrial compressors, two-stage expanders, two-stage fluid pumps, vacuum pumps, companders (combined compressors and expanders), and expander pumps (external expanders and internal pumps), which can implement a high-speed, high-pressure compression capability.
- the compressor unit including a gear rotor and the compressor system using the same in accordance with embodiments of the present invention has the following advantageous effects.
- the present invention is constructed as a triple trochoidal rotor such that working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure.
- the present invention is constructed as a triple trochoidal rotor such that the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability.
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Abstract
A compressor unit having a gear rotor, and a compressor system using the same are provided. The compressor system includes a compressor unit having a triple trochoidal rotor, which includes a first rotor, a second rotor, a third rotor, a casing, second and first suction ports, and second and first discharge ports; and a driving unit that rotates the three rotors such that external working fluid is sucked into the suction port and the working fluid sucked into the suction port is discharged to the discharge port in a state of being compressed. The compressor unit may be constructed as a triple trochoidal rotor such that working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure and provide a high-speed, high-pressure compression capability.
Description
- 1. Field of the Invention
- The present invention relates to a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure, and the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability, and a compressor system using the same.
- 2. Description of the Related Art
- A compressor unit having a trochoidal rotor includes two gear rotors that are rotated in a state of being engaged with each other to cause working fluid to pass through therebetween to compress the working fluid, and a casing that accommodates the gear rotors therein. The trochoidal rotor is a rotor or gear rotor having trochoidal gear teeth formed on the inner and outer peripheral surfaces thereof.
- The above conventional compressor unit includes: a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof; a second rotor that accommodates the first rotor at an eccentric position relative to rotary center axis thereof therein and has a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor; and a casing that sealing accommodates the first and second rotors therein.
- The conventional compressor unit as constructed above has a basic operation mechanism in which fluid is sucked and compressed, and is discharged depending on a change in the volume between the first rotor and the second rotor. This compressor unit is relatively simple in structure and can be made small-scale, and thus has been used as a fluid pump over the past few decades.
- However, such a conventional compressor unit has a limitation in that it employs only two rotors. That is, although a torque of the first rotor is increased, the working fluid is discharged each time when the first rotor is rotated by one turn, and thus the pressure of the discharged working fluid is not high above a given level. Therefore, the use of the compressor unit is limited at a place where more than a given head is required. In addition, a discharge speed of the fluid is limited, and thus high-speed pumping capability is not provided.
- Therefore, there is an urgent need for a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that the working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure, and the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability, and a compressor system using the same.
- Accordingly, the present invention has been made in order to solve the above-mentioned problems occurring in the prior art, and it is an object of the present invention to provide a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that the working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure, and a compressor system using the same.
- Another object of the present invention is to provide a compressor unit including a gear rotor, which is constructed as a triple trochoidal rotor such that the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability, and a compressor system using the same.
- To achieve the above objects, in accordance with an aspect of the present invention, a compressor unit is provided. The compressor unit includes a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof and a stationary shaft securely fixed to a rotary center thereof; a second rotor configured to eccentrically accommodate the first rotor therein, the second rotor having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor, and a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof, wherein the number of the inwardly extending trochoidal gear teeth of the second rotor is larger than that of the outwardly extending trochoidal gear teeth of the first rotor and the number of the outwardly extending trochoidal gear teeth of the second rotor is equal to that of the inwardly extending trochoidal gear teeth of the second rotor; a third rotor configured to eccentrically accommodate the second rotor therein, and having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the third rotor are in line contact with the outwardly extending trochoidal gear teeth of the second rotor while being engaged with the outwardly extending trochoidal gear teeth of the second rotor, where the number of the inwardly extending trochoidal gear teeth of the third rotor is larger than that of the outwardly extending trochoidal gear teeth of the second rotor; a casing configured to sealingly accommodate the first, second and third rotors in such a manner as to be disposed independently of the stationary shaft of the first rotor, and rotatably support the driving shaft of the third rotor in a state in which the driving shaft extends protrudingly to the outside; a second suction port disposed at a side of the driving shaft so as to fluidically connect the inside and the outside of the casing, and position at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are widened maximally when the first, second and third rotors are rotated, and a first suction port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is widened maximally; and a second discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are narrowed when the first, second and third rotors are rotated, and a first discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is narrowed.
- In addition, to achieve the above objects, in accordance with another aspect of the present invention, a compressor system is provided. The compressor system includes a compressor unit including a triple trochoidal rotor, the compressor unit including a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof and a stationary shaft securely fixed to a rotary center thereof; a second rotor configured to eccentrically accommodate the first rotor therein, the second rotor having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor, and a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof, wherein the number of the inwardly extending trochoidal gear teeth of the second rotor is larger than that of the outwardly extending trochoidal gear teeth of the first rotor and the number of the outwardly extending trochoidal gear teeth of the second rotor is equal to that of the inwardly extending trochoidal gear teeth of the second rotor; a third rotor configured to eccentrically accommodate the second rotor therein, and having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the third rotor are in line contact with the outwardly extending trochoidal gear teeth of the second rotor while being engaged with the outwardly extending trochoidal gear teeth of the second rotor, where the number of the inwardly extending trochoidal gear teeth of the third rotor is larger than that of the outwardly extending trochoidal gear teeth of the second rotor; a casing configured to sealingly accommodate the first, second and third rotors in such a manner as to be disposed independently of the stationary shaft of the first rotor, and rotatably support the driving shaft of the third rotor in a state in which the driving shaft extends protrudingly to the outside; a second suction port disposed at a side of the driving shaft so as to fluidically connect the inside and the outside of the casing, and position at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are widened maximally when the first, second and third rotors are rotated, and a first suction port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is widened maximally; and a second discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are narrowed when the first, second and third rotors are rotated, and a first discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is narrowed; and a driving unit connected to the driving shaft, and configured to apply a torque to the driving shaft to rotate the first, second and third rotors such that external working fluid is sucked into the suction port and the working fluid sucked into the suction port is discharged to the discharge port in a state of being compressed.
- According to an aspect of the present invention, the first discharge port and the second suction port may be fluidically connected to the connection pipe or the inside of the compressor front cover such that the working fluid primarily compressed between the second rotor and the third rotor after being sucked into the first suction port and then primarily discharged through the first discharge port is induced to the second suction port to cause the working fluid to be secondarily compressed between the first rotor and the second rotor, and the primarily discharged fluid is cooled and then is sucked into the second suction port to lower the temperature of the fluid discharged to the second discharge port.
- According to an aspect of the present invention, the compressor unit may further include a suction resistance preventing slot formed in a compressor cover that fixes a central rotary shaft of the first rotor to an external cover upon the rotation of the first, second and the third rotors, in such a manner as to extend from the first and second suction ports; a residue compressed gas rotation resistance preventing slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports; and a compression ratio adjustment slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports.
- According to an aspect of the present invention, the compressor unit including a triple trochoidal rotor may be applied to industrial compressors, two-stage expanders, two-stage fluid pumps, vacuum pumps, companders (combined compressors and expanders), and expander pumps (external expanders and internal pumps).
- The above and other objects, features and advantages of the present invention will be apparent from the following detailed description of embodiments of the invention in conjunction with the accompanying drawings, in which:
-
FIG. 1 is a view illustrating a compressor unit including a gear rotor in accordance with an embodiment of the present invention; -
FIG. 2 is a view illustrating the construction of a front cover of the construction of a front cover of the compressor unit shown inFIG. 1 ; -
FIG. 3 is a view illustrating the construction of a rotor of the compressor shown inFIG. 1 ; -
FIG. 4 is a view illustrating a side of the compressor shown inFIG. 1 ; -
FIG. 5 is a block diagram illustrating the construction of a compressor system including a gear rotor accordance with an embodiment of the present invention; -
FIG. 6 shows a compression mechanism of the compressor system shown inFIG. 5 ; and -
FIG. 7 shows another embodiment of a compression mechanism of the compressor system shown inFIG. 5 . - Reference will be now made in detail to embodiments of the present invention with reference to the attached drawings. In the following description, the detailed description on known function and constructions unnecessarily obscuring the subject matter of the present invention will be avoided hereinafter. Also, the terms used herein are defined in consideration of the function of the present invention, which may vary according to an intention of a user or an operator or according to custom. Thus, definition of such terms should be made based on content throughout the specification, which refers to a compressor unit including a gear rotor and a compressor system using the same according to embodiments of the present invention.
- The following list is an explanation of reference numerals used throughout the drawings and the detailed description:
- 1: first suction port
- 2: first suction port slot
- 3: second suction port
- 4: second suction port slot
- 5: first discharge port
- 6: first discharge port compression ratio adjustment slot
- 7: compressed air resistance preventing slot for first discharge port
- 8: second discharge port
- 9: second discharge port compression ratio adjustment slot
- 10: compressed air resistance preventing slot for second discharge port
- 11: oil injection port
- 12: compressor unit
- 13: third rotor
- 14: second rotor
- 15: first rotor
- 16: shaft center
- 17: casing
- 18: trochoidal rotor assembly
- 19: compressor front cover
- 20: driving shaft
- 21: driving unit
- 22: oil separator and oil tank
- 23: compressed air storage tank
- 24: connection pipe
- Now, an embodiment of the present invention will be described hereinafter in more detail with reference to the accompanying drawings.
-
FIG. 1 is a view illustrating a compressor unit including a gear rotor in accordance with an embodiment of the present invention,FIG. 2 is a view illustrating the construction of a front cover of the construction of a front cover of the compressor unit shown inFIG. 1 ,FIG. 3 is a view illustrating the construction of a rotor of the compressor shown inFIG. 1 ,FIG. 4 is a view illustrating a side of the compressor shown inFIG. 1 , andFIG. 5 is a block diagram illustrating the construction of a compressor system including a gear rotor accordance with an embodiment of the present invention. - Referring to
FIGS. 1 to 5 , acompressor unit 12 according to an embodiment of the present invention includes atrochoidal rotor assembly 18 in which threetrochoidal rotors casing 17 that sealingly accommodates theassembly 18 therein. Thecasing 17 is fabricated in a cylindrical shape having a predetermined diameter. - The
trochoidal rotor assembly 18 includes afirst rotor 15, asecond rotor 14 that accommodates thefirst rotor 15 at an eccentric position therein, and athird rotor 13 that accommodates thesecond rotor 14 at an eccentric position therein. - Further, similar to a typical trochoidal gear pump, the
first rotor 15 and thesecond rotor 14 are engaged with each other, and simultaneously are in line contact with each other. Thethird rotor 13 is in line contact with thesecond rotor 14 while being engaged with thesecond rotor 14. A stationary shaft is securely fixed to afront cover 19 of the compressor unit by ashaft center 16 at a rotary center axis of thefirst rotor 15. - In addition, a driving
shaft 20 extends in a longitudinal direction in a state of being joined to thethird rotor 13 such that the drivingshaft 20 is protruded to the outside of thecasing 17 by a predetermined length while passing through thecasing 17 as shown inFIG. 4 . The drivingshaft 20 is axially rotated by receiving a torque from anexternal driving unit 21 such that the first, second andthird rotors shaft 20. Thus, it can be seen fromFIG. 5 that the drivingshaft 20 of thecompressor unit 12 is connected to the drivingunit 21. The drivingunit 21 is a motor or engine that can provide a torque. - In addition, first and
second suction ports second discharge port 8 is fluidically connected to an oil separator andoil tank 22. Fluid discharged upon the rotation of the first, second and third rotors increases the internal pressure of the oil separator andoil tank 22 through asecond discharge port 8 to cause lubricant oil contained in the oil separator andoil tank 22 to be supplied the third andsecond rotors oil injection port 11. The oil separator andoil tank 22 is connected to the compressedair storage tank 23. The compressedair storage tank 23 serves to temporarily store the compressed gas discharged from thecompressor unit 12, and may not be installed according to embodiments. - In the case where the compressed
air storage tank 23 is not installed in a compressor system according to the present invention, the oil separator andoil tank 22 is directly connected to a demand place requiring compressed air by aconnection pipe 24 for discharge of air. In addition, when high-pressure air is not required, the connection between thesecond suction port 3 and thefirst discharge port 5 is interrupted, and thefirst suction port 1 and thesecond suction port 3 are fluidically connected to each other and thesecond discharge port 8 and thefirst discharge port 5 are fluidically connected to each other such that low-pressure air is used in a one-stage compression manner. - Further, as described above, since the first and
second suction ports second suction ports second discharge ports compressor unit 12 will be described later with reference toFIG.6 . - Referring to
FIG. 5 , it can be seen that thefirst discharge port 5 is fluidically connected to thesecond suction port 3 through theconnection pipe 24. Moreover, thesecond discharge port 8 is connected to the oil separator andoil tank 22, and is connected to the compressedair storage tank 23 through theconnection pipe 24. - In the above construction, when the driving
shaft 20 is axially rotated by the drivingunit 21, external air is sucked into thefirst suction port 1. The air sucked into thefirst suction port 1 flows along a firstsuction port slot 2 penetratingly formed in thefront cover 19 of the compressor unit to cause the sucked air to be supplied in a maximum amount supplied between thethird rotor 13 and thesecond rotor 14 without any fluid resistance as shown inFIGS. 2 to 4 . The firstsuction port slot 2 of thefront cover 19 is used to prevent resistance of the sucked air. The sucked air is primarily compressed while being circulated in the inside of thecasing 17 between thesecond rotor 14 and thethird rotor 13, and then is discharged through thefirst discharge port 5. In this case, the compressed gas first reaches a compressionratio adjustment slot 6 of thefirst discharge port 5 before reaching thefirst discharge port 5. The aim of the compressionratio adjustment slot 6 is to adjust the compression ratio of the compressed air, the amount of air discharged primarily, and the amount of air sucked secondarily. The length of the compressionratio adjustment slot 6 varies depending on the adjustment amount of the compressed air. A compressed airresistance preventing slot 7 for thefirst discharge port 5 is penetratingly formed in thefront cover 19 of the compressor unit so as to prevent compression of air remained after being discharged through thefirst discharge port 5 as shown inFIG. 2 . The aim of the compressed airresistance preventing slot 7 is to smoothly discharge lubricant oil supplied while receiving rotation resistance of the rotors by compression of the compressed air that is not totally discharged from thefirst discharge port 5. - The compressed air discharged through the
first discharge port 5 is moved to thesecond suction port 3 through theconnection pipe 24, and is sucked between the second rotor and the first rotor along a secondsuction port slot 4 penetratingly formed therein without any fluid suction resistance as shown inFIGS. 2 and 4 . The aim of the secondsuction port slot 4 is to prevent suction resistance of the sucked compressed air. The sucked compressed air is again compressed between the first rotor and the second rotor, and reaches a compressionratio adjustment slot 9 of thesecond discharge port 8. The aim of the compressionratio adjustment slot 9 is to adjust the compression ratio. Then, the compressed air is discharged to thesecond discharge port 8 via the compressionratio adjustment slot 9, and the compressed air and oil that is not discharged but remained in the compressionratio adjustment slot 9 is discharged through a compressed airresistance preventing slot 10 for thesecond discharge port 8. The aim of the compressed airresistance preventing slot 10 for second discharge port is to remove rotation resistance of the rotors by compression of the compressed air and oil that is remained and to smoothly rotate the rotors. When the compressed air is discharged to the outside of thecasing 17 through thesecond discharge port 8 and is supplied to the oil separator andoil tank 22, the internal pressure of the oil separator andoil tank 22 is increased to cause the lubricant oil contained in the oil separator andoil tank 22 to be supplied between the third rotor and the second rotor through theoil injection port 11 of thecompressor front cover 19. In this case, since the third rotor and the second rotor are first opened, the inside of the oil separator andoil tank 22 become a vacuum state to cause the lubricant oil to be smoothly supplied between the third rotor and the second rotor due to the internal pressure of the oil separator andoil tank 22. - The compressed air collected in the oil separator and
oil tank 22 is moved to and is temporarily stored in the compressedair storage tank 23 through theconnection pipe 24. In the case where the compressed air needs not to be stored in the compressedair storage tank 23, it may not be installed. -
FIG. 6 shows a compression mechanism of the compressor system shown inFIG. 5 . - The operation mechanism of the compressor unit shown in
FIG. 5 is as follows. Working fluid is simultaneously sucked into two suction ports and is simultaneously discharged to two discharge ports. - As shown in
FIG. 6 , when the drivingshaft 20 is rotated, thetrochoidal rotor assembly 18 is rotated at its entirety together with the drivingshaft 20. Then, the spaces defined between thefirst rotor 15 and thesecond rotor 14 and between thesecond rotor 14 and thethird rotor 13, where the second andfirst suction ports third rotors casing 17 through the first andsecond suction ports FIG. 6 a. - In this state, when the driving
shaft 20 continues to be rotated, the working fluid is compressed while being rotated in a state of being caught between the first, second and thethird rotors second discharge ports FIG. 6 b. - As shown in
FIG.6c , when the working fluid being moved in a state of being caught between the first, second and thethird rotors second discharge ports discharge ports air storage tank 23. -
FIG. 7 shows another embodiment of a compression mechanism of the compressor unit shown inFIG. 5 . - The operation mechanism of the compressor unit shown in
FIG. 5 is basically, as follows. First, working fluid is allowed to be sucked into thefirst suction port 1 so as to be primarily compressed, and then is secondarily compressed in thecasing 17 via thefirst discharge port 5 and thesecond suction port 3. Then, the working fluid is finally discharged to thesecond discharge ports 8. - As shown in
FIG. 7 a, when the drivingshaft 20 is rotated by the driving unit 21 (seeFIG. 5 ), external working fluid is introduced into thecasing 17 through thefirst suction port 1. Then, the working fluid introduced into thecasing 17 is compressed while being moved to thefirst discharge port 5 in a state of being caught betweensecond rotor 14 and the third rotor 13 (seeFIGS. 7 b and 7 c). - As shown in
FIG. 7 c, the working fluid that has reached thefirst discharge port 5 escapes to the outside through thefirst discharge port 5 and is moved to thesecond suction port 3 through theconnection pipe 24. - Then, the working fluid moved to the
second suction port 3 is sucked between thefirst rotor 15 and thesecond rotor 14 as shownFIG. 7 d. Thereafter, as shown inFIG. 7 e, the sucked working fluid is again compressed between thefirst rotor 15 and thesecond rotor 14, and then is moved to thesecond discharge ports 8 so as to be discharged to the outside (seeFIG. 7 f). - As described above, the compressor unit according to an embodiment of the present invention can increase the discharge speed of the working fluid or can compress the working fluid in a two-stage compression manner to implement a high-speed, high-pressure compression capability.
- The compressor unit including a gear rotor and the compressor system using the same as described above can be applied to industrial compressors, two-stage expanders, two-stage fluid pumps, vacuum pumps, companders (combined compressors and expanders), and expander pumps (external expanders and internal pumps), which can implement a high-speed, high-pressure compression capability.
- As described above, the compressor unit including a gear rotor and the compressor system using the same in accordance with embodiments of the present invention has the following advantageous effects.
- First, the present invention is constructed as a triple trochoidal rotor such that working fluid can be compressed in a two-stage compression manner to enable the working fluid to be supplied at high pressure.
- Second, the present invention is constructed as a triple trochoidal rotor such that the volume of working fluid sucked and discharged can be increased to provide a high-speed, high-pressure compression capability.
- While the present invention has been described in connection with embodiments illustrated in the drawings, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the meaning of the invention or limit the scope of the invention disclosed in the claims. Also, it is to be understood that various equivalent modifications and variations of the embodiments can be made by a person having an ordinary skill in the art without departing from the spirit and scope of the present invention. Therefore, various embodiments of the present invention are merely provided as examples, and the true technical scope of the present invention should be defined by the technical spirit of the appended claims and their equivalents.
Claims (7)
1. A compressor unit comprising:
a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof and a stationary shaft securely fixed to a rotary center thereof;
a second rotor configured to eccentrically accommodate the first rotor therein, the second rotor having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor, and a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof, wherein the number of the inwardly extending trochoidal gear teeth of the second rotor is larger than that of the outwardly extending trochoidal gear teeth of the first rotor and the number of the outwardly extending trochoidal gear teeth of the second rotor is equal to that of the inwardly extending trochoidal gear teeth of the second rotor;
a third rotor configured to eccentrically accommodate the second rotor therein, and having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the third rotor are in line contact with the outwardly extending trochoidal gear teeth of the second rotor while being engaged with the outwardly extending trochoidal gear teeth of the second rotor, where the number of the inwardly extending trochoidal gear teeth of the third rotor is larger than that of the outwardly extending trochoidal gear teeth of the second rotor;
a casing configured to sealingly accommodate the first, second and third rotors in such a manner as to be disposed independently of the stationary shaft of the first rotor, and rotatably support the driving shaft of the third rotor in a state in which the driving shaft extends protrudingly to the outside;
a second suction port disposed at a side of the driving shaft so as to fluidically connect the inside and the outside of the casing, and position at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are widened maximally when the first, second and third rotors are rotated, and a first suction port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is widened maximally; and
a second discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are narrowed when the first, second and third rotors are rotated, and a first discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is narrowed.
2. The compressor unit according to claim 1 , further comprising:
a suction resistance preventing slot formed in a compressor cover that fixes a central rotary shaft of the first rotor to an external cover upon the rotation of the first, second and the third rotors, in such a manner as to extend from the first and second suction ports;
a residue compressed gas rotation resistance preventing slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports; and
a compression ratio adjustment slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports.
3. The compressor system according to claim 1 , wherein the compressor unit further comprises:
a suction resistance preventing slot formed in a compressor cover that fixes a central rotary shaft of the first rotor to an external cover upon the rotation of the first, second and the third rotors, in such a manner as to extend from the first and second suction ports;
a residue compressed gas rotation resistance preventing slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports; and
a compression ratio adjustment slot formed in the compressor cover in such a manner as to extend from the first and second discharge ports.
4. The compressor system according to claim 1 , wherein the compressor unit including a triple trochoidal rotor is applied to industrial compressors, two-stage expanders, two-stage fluid pumps, vacuum pumps, companders (combined compressors and expanders), and expander pumps (external expanders and internal pumps).
5. A compressor system comprising:
a compressor unit including a triple trochoidal rotor, the compressor unit comprising:
a first rotor having a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof and a stationary shaft securely fixed to a rotary center thereof;
a second rotor configured to eccentrically accommodate the first rotor therein, the second rotor having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the second rotor are in line contact with the outwardly extending trochoidal gear teeth of the first rotor while being engaged with the trochoidal gear teeth of the first rotor, and a plurality of outwardly extending trochoidal gear teeth formed on the outer peripheral surface thereof, wherein the number of the inwardly extending trochoidal gear teeth of the second rotor is larger than that of the outwardly extending trochoidal gear teeth of the first rotor and the number of the outwardly extending trochoidal gear teeth of the second rotor is equal to that of the inwardly extending trochoidal gear teeth of the second rotor;
a third rotor configured to eccentrically accommodate the second rotor therein, and having a plurality of inwardly extending trochoidal gear teeth formed on the inner peripheral surface thereof in such a manner that the inwardly extending trochoidal gear teeth of the third rotor are in line contact with the outwardly extending trochoidal gear teeth of the second rotor while being engaged with the outwardly extending trochoidal gear teeth of the second rotor, where the number of the inwardly extending trochoidal gear teeth of the third rotor is larger than that of the outwardly extending trochoidal gear teeth of the second rotor;
a casing configured to sealingly accommodate the first, second and third rotors in such a manner as to be disposed independently of the stationary shaft of the first rotor, and rotatably support the driving shaft of the third rotor in a state in which the driving shaft extends protrudingly to the outside;
a second suction port disposed at a side of the driving shaft so as to fluidically connect the inside and the outside of the casing, and position at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are widened maximally when the first, second and third rotors are rotated, and a first suction port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is widened maximally; and
a second discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the first rotor and the inwardly extending trochoidal gear teeth of the second rotor are narrowed when the first, second and third rotors are rotated, and a first discharge port positioned at a portion in which the space between the outwardly extending trochoidal gear teeth of the second rotor and the inwardly extending trochoidal gear teeth of the third rotor is narrowed; and
a driving unit connected to the driving shaft, and configured to apply a torque to the driving shaft to rotate the first, second and third rotors such that external working fluid is sucked into the suction port and the working fluid sucked into the suction port is discharged to the discharge port in a state of being compressed.
6. The compressor system according to claim 5 , wherein first discharge port and the second suction port are fluidically connected to the connection pipe or the inside of the compressor front cover such that the working fluid primarily compressed between the second rotor and the third rotor after being sucked into the first suction port and then primarily discharged through the first discharge port is induced to the second suction port to cause the working fluid to be secondarily compressed between the first rotor and the second rotor, and the primarily discharged fluid is cooled and then is sucked into the second suction port to lower the temperature of the fluid discharged to the second discharge port.
7. The compressor system according to claim 5 , wherein the compressor unit including a triple trochoidal rotor is applied to industrial compressors, two-stage expanders, two-stage fluid pumps, vacuum pumps, companders (combined compressors and expanders), and expander pumps (external expanders and internal pumps).
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/414,253 US20130236345A1 (en) | 2012-03-07 | 2012-03-07 | Compressor unit including gear rotor and compressor system using the same |
CN2012104193644A CN103306977A (en) | 2012-03-07 | 2012-10-29 | Compressor unit of grade two and compressor system using the same |
US13/711,461 US20130236346A1 (en) | 2012-03-07 | 2012-12-11 | Two step compressor unit and compressor system having the same |
PCT/KR2013/001842 WO2013133641A1 (en) | 2012-03-07 | 2013-03-07 | Two-stage compressor unit and compressor system having same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US13/414,253 US20130236345A1 (en) | 2012-03-07 | 2012-03-07 | Compressor unit including gear rotor and compressor system using the same |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US13/711,461 Continuation-In-Part US20130236346A1 (en) | 2012-03-07 | 2012-12-11 | Two step compressor unit and compressor system having the same |
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US20130236345A1 true US20130236345A1 (en) | 2013-09-12 |
Family
ID=49114287
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US13/414,253 Abandoned US20130236345A1 (en) | 2012-03-07 | 2012-03-07 | Compressor unit including gear rotor and compressor system using the same |
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US (1) | US20130236345A1 (en) |
CN (1) | CN103306977A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106321422A (en) * | 2016-09-29 | 2017-01-11 | 武汉大学 | Two-stage internal gear pump |
CN109827059A (en) * | 2019-01-23 | 2019-05-31 | 浙江零跑科技有限公司 | A kind of cycloid gear pump of two-way fuel feeding |
US11303169B2 (en) * | 2017-09-13 | 2022-04-12 | Lg Innotek Co., Ltd. | Electric pump and motor |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109252945A (en) * | 2018-05-17 | 2019-01-22 | 左方 | Cycloid rotor engine |
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US4658583A (en) * | 1984-06-11 | 1987-04-21 | Trw Inc. | Double staged, internal rotary pump with flow control |
US6195990B1 (en) * | 1999-01-13 | 2001-03-06 | Valeo Electrical Systems, Inc. | Hydraulic machine comprising dual gerotors |
US6755093B2 (en) * | 2002-01-29 | 2004-06-29 | Meritor Heavy Vehicle Technology, Llc | Planetary drive assembly with idlers for low floor vehicle |
US7322897B2 (en) * | 2003-01-17 | 2008-01-29 | Nissan Motor Co., Ltd. | Hybrid transmission |
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US2737341A (en) * | 1950-02-25 | 1956-03-06 | Trico Products Corp | Rotary pump |
US5310326A (en) * | 1992-09-14 | 1994-05-10 | Mainstream Engineering Corporation | Rotary compressor with improved bore configuration and lubrication system |
EP0903499B1 (en) * | 1997-09-17 | 2004-08-11 | SANYO ELECTRIC Co., Ltd. | Scroll compressor |
JP4028777B2 (en) * | 2002-07-29 | 2007-12-26 | 株式会社山田製作所 | Trochoid pump |
KR100530447B1 (en) * | 2003-10-06 | 2005-11-25 | 김우균 | Compressor unit having triple trochoidal rotor and Compressor having the compressor unit |
-
2012
- 2012-03-07 US US13/414,253 patent/US20130236345A1/en not_active Abandoned
- 2012-10-29 CN CN2012104193644A patent/CN103306977A/en active Pending
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US4658583A (en) * | 1984-06-11 | 1987-04-21 | Trw Inc. | Double staged, internal rotary pump with flow control |
US6195990B1 (en) * | 1999-01-13 | 2001-03-06 | Valeo Electrical Systems, Inc. | Hydraulic machine comprising dual gerotors |
US6755093B2 (en) * | 2002-01-29 | 2004-06-29 | Meritor Heavy Vehicle Technology, Llc | Planetary drive assembly with idlers for low floor vehicle |
US7322897B2 (en) * | 2003-01-17 | 2008-01-29 | Nissan Motor Co., Ltd. | Hybrid transmission |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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CN106321422A (en) * | 2016-09-29 | 2017-01-11 | 武汉大学 | Two-stage internal gear pump |
US11303169B2 (en) * | 2017-09-13 | 2022-04-12 | Lg Innotek Co., Ltd. | Electric pump and motor |
CN109827059A (en) * | 2019-01-23 | 2019-05-31 | 浙江零跑科技有限公司 | A kind of cycloid gear pump of two-way fuel feeding |
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CN103306977A (en) | 2013-09-18 |
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