US20150110606A1 - Turbo compression system - Google Patents
Turbo compression system Download PDFInfo
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- US20150110606A1 US20150110606A1 US14/403,384 US201314403384A US2015110606A1 US 20150110606 A1 US20150110606 A1 US 20150110606A1 US 201314403384 A US201314403384 A US 201314403384A US 2015110606 A1 US2015110606 A1 US 2015110606A1
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- flow path
- valve
- impeller
- compression
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- 230000006835 compression Effects 0.000 title claims abstract description 156
- 238000007906 compression Methods 0.000 title claims abstract description 156
- 239000012530 fluid Substances 0.000 claims abstract description 47
- 238000007599 discharging Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 claims description 2
- 238000005859 coupling reaction Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003507 refrigerant Substances 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
- F04D15/0005—Control, e.g. regulation, of pumps, pumping installations or systems by using valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D1/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D1/06—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/02—Units comprising pumps and their driving means
- F04D13/04—Units comprising pumps and their driving means the pump being fluid driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D13/00—Pumping installations or systems
- F04D13/12—Combinations of two or more pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D17/00—Radial-flow pumps, e.g. centrifugal pumps; Helico-centrifugal pumps
- F04D17/08—Centrifugal pumps
- F04D17/10—Centrifugal pumps for compressing or evacuating
- F04D17/12—Multi-stage pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D19/00—Axial-flow pumps
- F04D19/02—Multi-stage pumps
- F04D19/04—Multi-stage pumps specially adapted to the production of a high vacuum, e.g. molecular pumps
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D25/00—Pumping installations or systems
- F04D25/16—Combinations of two or more pumps ; Producing two or more separate gas flows
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0269—Surge control by changing flow path between different stages or between a plurality of compressors; load distribution between compressors
Definitions
- the present disclosure relates to a turbo compression system, in detail, the turbo compression system which has plural design points; the characteristics of two-stage turbo compression system and single-stage dual-intake turbo compression system to be selectively converted.
- Turbo compression system is a system which intakes, compresses and discharges fluids or gases such as refrigerant by the rotation of Impeller installed inside a turbo compressor.
- turbo compression system is characterized in that the discharge pressure is relatively high.
- the high-speed rotation of the impeller is embodied by a multiplying gear connected with a constant speed motor.
- the impeller has been direct connected with the motor.
- Korean Patent No. 0273433 discloses a turbo compression system having two Compressing Devices which efficiently improves cooling effectiveness of motor by activating circulation of refrigerant which flows into a motor and Korean Patent No. 0304562 discloses a turbo compression system which is easy to process and assemble radial supporting means.
- the conventional turbo compression system have a problem that the maximum flow rate under the low compression ratio in comparison with the one design point gets smaller than that of a single-stage dual-intake turbo compression system which has two compressing devices.
- An object of the present disclosure is to provide a turbo compression system having two compressing devices which allows selective conversion between one design point of two-stage turbo compression system for high pressure and the other design point of the single-stage dual-intake turbo compression system for low pressure.
- an aspect of a turbo compression system comprises a first impeller having a first inlet and a first outlet, compressing fluid flowing in through the first inlet by rotation motion and then discharging out through the first outlet; a second impeller having a second inlet and a second outlet, compressing fluid flowing in through the second inlet by rotation motion and then discharging out through the second outlet; a second discharge flow path connected with the second outlet; a first discharge flow path communicating the second discharge flow path with the first outlet; a first valve provided at the first discharge flow path and controlling flowing of the fluid; a second intake flow path connected with the second inlet and selectively making the fluid flow into the second impeller; a second valve provided at one end of the second intake flow path; and a compression flow path connected with the first valve at one end of the compression flow path and connecting with the second intake flow path at the other end of the compression flow path.
- the turbo compression system further may comprise a motor having two rotation shafts provided at one side and the other side of the motor and respectively coupled with the first impeller and the second impeller.
- the first valve may selectively convert between a two-stage compression path in which fluid flowing into the first Inlet are compressed and discharged, passing through the first impeller and the second impeller in sequence and a single-stage compression path in which fluids flowing out of the first outlet and the second outlet are joined and discharged.
- the second valve may be shut off in case fluid is controlled to flow along with the two-stage compression path, and the second valve may open in case fluid is controlled to flow along with the single-stage compression path.
- the first valve may control so as to operate as either two-stage turbo compression system or single-stage turbo compression system by selectively opening or closing.
- the first impeller and the second impeller may have same-sized diameter.
- the turbo compression system further may comprise a first motor which is connected to the first impeller and rotates the first impeller; and a second motor which is provided separately from the first motor and connected to the second impeller and rotates the second impeller.
- the first valve may be provided as a three-way valve which communicates either the second discharge flow path or the compression flow path with the first discharge flow path, and the second valve may be provided further away from the second inlet than a distance from a position joining the compression flow path with the second intake flow path, and is provided as a solenoid valve which opens and closes the second intake flow path.
- the first valve may be provided as a three-way valve which communicates either the second discharge flow path or the compression flow path with the first discharge flow path
- the second valve is provided at the coupling site of compression flow path and the second intake flow path and also provided as a three-way valve which communicates the second intake flow path with the compression flow path.
- the first valve may selectively convert between a two-stage compression path in which fluid flowing into the first inlet and passing through the first impeller and the second impeller in sequence, are compressed and discharged, and a single-stage compression flow path in which fluid flowing out of the first outlet and the second outlet are joined and discharged.
- the second valve may be controlled to communicate the second intake flow path with the second compression flow Path, and in case fluid is controlled to flow along with the single-stage compression path, the second valve may be controlled to communicate the second intake flow path with the Inflow path.
- the first valve and the second valve are provided as three-way valves.
- An aspect of a turbo compression system according to the present disclosure may have advantage to increase the maximum flow rate to be capable of operating at a low pressure region over a two-stage turbo compression system with an equivalent capacity.
- an aspect of a turbo compression system according to the present disclosure may have advantage to increase the operating range to be capable of operating with the minimum flow rate at a low pressure region by operating an aspect of a turbo compression system according to the present disclosure at the design point of the two-stage turbo compression system.
- FIG. 1 is a view showing schematically a turbo compression system according to the first embodiment of the present disclosure.
- FIG. 2 is a view showing an operating status of the turbo compression system of FIG. 1 , which is operated at the design point (D 2 ) of the two-stage turbo compression system for high pressure.
- FIG. 3 is a view showing an operating status of the turbo compression system of FIG. 1 , which is operated at the design point (D 1 ) of the single-stage dual-intake turbo compression system for low pressure.
- FIG. 4 is a view showing a pressure (P)- flow rate (Q) diagram at design points (D 1 , D 2 ) of the turbo compression system of FIG. 1 .
- FIG. 5 is a view showing schematically a turbo compression system according to the second embodiment of the present disclosure.
- FIG. 6 is a view showing an operating status of the turbo compression system of FIG. 5 , which is operated at the design point (D 2 ) of the two-stage turbo compression system for high pressure.
- FIG. 7 is a view showing an operating status of the turbo compression system of FIG. 5 , which is operated at the design point (D 1 ) of the single-stage dual-intake turbo compression system for low pressure.
- FIG. 1 is a view showing schematically a turbo compression system according to the first embodiment of the present disclosure
- FIG. 2 is a view showing an operating status of the turbo compression system of FIG. 1 , which is operated at the design point (D 2 ) of the two-stage turbo compression system for high pressure
- FIG. 3 is a view showing an operating status of the turbo compression system of FIG. 1 , which is operated at the design point (D 1 ) of the single-stage dual-intake turbo compression system for low pressure.
- a turbo compression system 100 comprises a first impeller 120 connected at a outlet of the first impeller 120 with a first discharge flow path 121 which is connected to a second discharge flow path 170 with a first valve ( 130 ), a second impeller 160 connected to a second intake flow path 151 in which a fluid is flown by a second valve 150 and connected with a second discharge flow path 170 at a outlet of the second impeller 160 , a motor 110 driving the first impeller 120 and the second impeller 160 , and a compression flow path 141 of which one end is connected to the first valve 130 and the other end is coupled to the second intake flow path 151 at the downstream of the second valve ( 150 ).
- the first valve 130 is desirable to be provided with a three-way valve and the second valve 150 is desirable to be provided with a solenoid valve.
- the first valve 130 and the second valve 150 are provided to be capable of controlling their on/off action. Thereby we may select either an operating at the design point (D 2 ) of two-stage turbo compression system for high pressure or an operating at the design point (D 1 ) of single-stage dual-intake turbo compression system for low pressure. It will be described later in detail referring to FIG. 4 .
- the turbo compression system 100 since the flow path of intake fluid or discharge fluid may be controlled by properly operating the first valve 130 and the second valve 150 , the turbo compression system 100 according to the first embodiment of the present disclosure may selectively accomplish one of the single-stage dual-intake turbo compression system under low pressure, the two-stage turbo compression system discharging maximum flow rate under high pressure, and the two-stage turbo compression system discharging minimum flow rate under low pressure.
- the turbo compression system 100 in case that the second valve 150 is closed and the first valve 130 is controlled to connect the first discharge flow path 121 with the compression flow path 141 , the turbo compression system 100 according to the present embodiment operates as the two-stage turbo compression system which can discharge maximum flow rate under high pressure or minimum flow rate under low pressure.
- the turbo compression system 100 in case that the second valve 150 is open and the first valve 130 is controlled to connect the first discharge flow path 121 with the second discharge flow path 170 and close the compression flow path 141 , the turbo compression system 100 according to the present embodiment operates as the single-stage dual-intake turbo compression system which can discharge the flow rate of design point (D 1 ) under low pressure of design point (D 1 ).
- the fluid flowing into the first impeller 120 through the first intake path (i) is compressed by the first impeller 120 (single stage compression) and then discharged through the second discharge flow path 170
- the fluid flowing into the second impeller 160 through the second valve 150 is compressed by the second impeller 160 (single stage compression) and then discharged through the second discharge flow path 170 .
- the operating range to be capable of operating with the minimum flow rate at a low pressure region is increased by operating the turbo compression system 100 according to the present embodiment at the design point (D 2 ) of the two-stage turbo compression system.
- FIG. 4 is a view showing a pressure (P)-flow rate (Q) diagram at design points (D 1 , D 2 ) of the turbo compression system of FIG. 1 .
- the turbo compression system 100 by properly controlling the operation of the valves 130 and 150 , may selectively accomplish one of the two-stage turbo compression system operating at the design point D 2 which discharges maximum flow rate under high pressure or discharges minimum flow rate under low pressure, the single-stage dual-intake turbo compression system operating at the design point D 1 .
- the turbo compression system 100 may have the characteristics of both the two-stage turbo compression system and the single-stage dual-intake turbo compression system, because of that, the operating range to be capable of operating with the minimum flow rate at a low pressure region may be increased.
- the first impeller 120 and the second impeller 160 which are driven by single motor have same-sized diameter in order to have the same compression ratio at an equal rotation speed of the motor.
- the impellers 120 and 160 may have ones with same-sized diameter or ones with different-sized diameter. That's because it is possible to control compression ratio as much as want by controlling motors separately, when using separate motors.
- FIG. 5 is a view showing schematically a turbo compression system according to the second embodiment of the present disclosure
- FIG. 6 is a view showing an operating status of the turbo compression system of FIG. 5 , which is operated at the design point (D 2 ) of the two-stage turbo compression system for high pressure
- FIG. 7 is a view showing an operating status of the turbo compression system of FIG. 5 , which is operated at the design point (D 1 ) of the single-stage dual-intake turbo compression system for low pressure.
- the turbo compression system 200 comprises a first impeller 220 connected to a first discharge flow path 232 at its outlet and communicating with a second discharge flow path 270 by passing through a first valve 230 and a first compression flow path 231 in sequence, a first motor 210 driving the first impeller 220 , a second impeller 260 connected at its outlet to the second discharge flow path 270 and connected at its inlet to a second intake flow path 243 having a second valve 240 which selectively closes one of the second compression flow path 241 branching off from the second discharge flow path 270 at the first valve 230 and a intake flow path 242 for inflowing fluid to be compressed from outside, and a second motor 250 driving the second impeller 220 .
- first valve 230 and the second valve 240 are also provided with a three-way valve.
- the turbo compression system 200 may operate as the two-stage turbo compression system which can discharge maximum flow rate under high pressure or minimum flow rate under low pressure.
- the first valve 230 is controlled to be connected to the second compression flow path 241
- the second valve 240 is controlled to be shut off so as to prevent from inflowing fluid through the intake flow path and also controlled to flow the fluid passing through the first valve 230 into the second impeller 260 .
- first stage compression after the fluid flowing into the first impeller 120 through a first intake flow path 221 is firstly compressed by the first impeller 220 (first stage compression), it is secondary compressed by the second impeller 260 (second stage compression) in which the fluid flows through the second compression flow path 241 and then the fluid is discharged through the second discharge flow path 270 .
- the turbo compression system 100 may operate as the single-stage dual-intake turbo compression system which can discharge the flow rate of design point (D 1 ) under low pressure of design point (D 1 ).
- the first valve 230 is open so as to communicating with the first compression flow path 231 and the second valve 240 is controlled to communicating the intake flow path 241 with the second intake flow path 243 so as to allow the fluid to flow in from outside.
- the fluid flowing into the first impeller 120 through the first intake flow path 221 is compressed by the first impeller 220 (single stage compression) and then discharged through the second discharge flow path 270
- the fluid flowing into the second impeller 260 through the second valve 250 is compressed by the second impeller 260 (single stage compression) and then discharged through the second discharge flow path 270 .
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Abstract
Description
- The present disclosure relates to a turbo compression system, in detail, the turbo compression system which has plural design points; the characteristics of two-stage turbo compression system and single-stage dual-intake turbo compression system to be selectively converted.
- This section provides background information related to the present disclosure which is not necessarily prior art.
- Turbo compression system is a system which intakes, compresses and discharges fluids or gases such as refrigerant by the rotation of Impeller installed inside a turbo compressor. Generally, turbo compression system is characterized in that the discharge pressure is relatively high.
- For the relative high discharge pressure, the high-speed rotation of the impeller is embodied by a multiplying gear connected with a constant speed motor. However, due to the technical progress of the bearing and the inverter, the impeller has been direct connected with the motor.
- On the other hand, Korean Patent No. 0273433 discloses a turbo compression system having two Compressing Devices which efficiently improves cooling effectiveness of motor by activating circulation of refrigerant which flows into a motor and Korean Patent No. 0304562 discloses a turbo compression system which is easy to process and assemble radial supporting means.
- However, the conventional turbo compression systems were designed to operate with one design point, that is, best efficiency and high compression ratio were realized at one specified flow rate and one specified pressure.
- Therefore, the conventional turbo compression system have a problem that the maximum flow rate under the low compression ratio in comparison with the one design point gets smaller than that of a single-stage dual-intake turbo compression system which has two compressing devices.
- An object of the present disclosure is to provide a turbo compression system having two compressing devices which allows selective conversion between one design point of two-stage turbo compression system for high pressure and the other design point of the single-stage dual-intake turbo compression system for low pressure.
- In order to achieve the object, an aspect of a turbo compression system according to the present disclosure comprises a first impeller having a first inlet and a first outlet, compressing fluid flowing in through the first inlet by rotation motion and then discharging out through the first outlet; a second impeller having a second inlet and a second outlet, compressing fluid flowing in through the second inlet by rotation motion and then discharging out through the second outlet; a second discharge flow path connected with the second outlet; a first discharge flow path communicating the second discharge flow path with the first outlet; a first valve provided at the first discharge flow path and controlling flowing of the fluid; a second intake flow path connected with the second inlet and selectively making the fluid flow into the second impeller; a second valve provided at one end of the second intake flow path; and a compression flow path connected with the first valve at one end of the compression flow path and connecting with the second intake flow path at the other end of the compression flow path.
- The turbo compression system further may comprise a motor having two rotation shafts provided at one side and the other side of the motor and respectively coupled with the first impeller and the second impeller.
- The first valve may selectively convert between a two-stage compression path in which fluid flowing into the first Inlet are compressed and discharged, passing through the first impeller and the second impeller in sequence and a single-stage compression path in which fluids flowing out of the first outlet and the second outlet are joined and discharged.
- The second valve may be shut off in case fluid is controlled to flow along with the two-stage compression path, and the second valve may open in case fluid is controlled to flow along with the single-stage compression path.
- The first valve may control so as to operate as either two-stage turbo compression system or single-stage turbo compression system by selectively opening or closing.
- The first impeller and the second impeller may have same-sized diameter.
- The turbo compression system further may comprise a first motor which is connected to the first impeller and rotates the first impeller; and a second motor which is provided separately from the first motor and connected to the second impeller and rotates the second impeller.
- The first valve may be provided as a three-way valve which communicates either the second discharge flow path or the compression flow path with the first discharge flow path, and the second valve may be provided further away from the second inlet than a distance from a position joining the compression flow path with the second intake flow path, and is provided as a solenoid valve which opens and closes the second intake flow path.
- The first valve may be provided as a three-way valve which communicates either the second discharge flow path or the compression flow path with the first discharge flow path, and the second valve is provided at the coupling site of compression flow path and the second intake flow path and also provided as a three-way valve which communicates the second intake flow path with the compression flow path.
- Another aspect of a turbo compression system according to the present disclosure comprises a first impeller having a first inlet and a first outlet, compressing fluid flowing in through the first inlet by rotation motion and then discharging out through the first outlet; a first motor driving the first impeller rotate; a second impeller having a second inlet and a second outlet, compressing fluid flowing in through the second inlet by rotation motion and then discharging out through the second outlet; a second motor provided separately from the first motor and driving the second impeller rotate; a first discharge flow path provided with connection to the first outlet; a second discharge flow path provided with connection to the second outlet, separately from the discharge flow path; a first valve provided at the end of the first discharge flow path; a first compression flow path communicating the first valve with the second discharge flow path; a second compression flow path connected with the first discharge flow path passing through the first valve; a second valve provided at the end of the second compression flow path; a second intake flow path communicating the second valve with the second inlet; and a intake flow path provided separately from the second intake flow path, connected with the second valve, and selectively communicated with the second Inflow Path.
- The first valve may selectively convert between a two-stage compression path in which fluid flowing into the first inlet and passing through the first impeller and the second impeller in sequence, are compressed and discharged, and a single-stage compression flow path in which fluid flowing out of the first outlet and the second outlet are joined and discharged.
- In case fluid is controlled to flow along with the two-stage compression path, the second valve may be controlled to communicate the second intake flow path with the second compression flow Path, and in case fluid is controlled to flow along with the single-stage compression path, the second valve may be controlled to communicate the second intake flow path with the Inflow path.
- The first valve and the second valve are provided as three-way valves.
- An aspect of a turbo compression system according to the present disclosure may have advantage to increase the maximum flow rate to be capable of operating at a low pressure region over a two-stage turbo compression system with an equivalent capacity.
- Further, an aspect of a turbo compression system according to the present disclosure may have advantage to increase the operating range to be capable of operating with the minimum flow rate at a low pressure region by operating an aspect of a turbo compression system according to the present disclosure at the design point of the two-stage turbo compression system.
-
FIG. 1 is a view showing schematically a turbo compression system according to the first embodiment of the present disclosure. -
FIG. 2 is a view showing an operating status of the turbo compression system ofFIG. 1 , which is operated at the design point (D2) of the two-stage turbo compression system for high pressure. -
FIG. 3 is a view showing an operating status of the turbo compression system ofFIG. 1 , which is operated at the design point (D1) of the single-stage dual-intake turbo compression system for low pressure. -
FIG. 4 is a view showing a pressure (P)- flow rate (Q) diagram at design points (D1, D2) of the turbo compression system ofFIG. 1 . -
FIG. 5 is a view showing schematically a turbo compression system according to the second embodiment of the present disclosure. -
FIG. 6 is a view showing an operating status of the turbo compression system ofFIG. 5 , which is operated at the design point (D2) of the two-stage turbo compression system for high pressure. -
FIG. 7 is a view showing an operating status of the turbo compression system ofFIG. 5 , which is operated at the design point (D1) of the single-stage dual-intake turbo compression system for low pressure. - Hereinafter, various embodiments of a turbo compression system according to the present disclosure will be described with reference to the accompanying drawings.
- However, the descriptions have been given by the way of an example in limited embodiments for a clear understanding of the technical idea disclosed below. It is not limited thereto, but applicable to the embodiments which can be deduced by those who have conventional knowledge in the field of the art that belongs to the technical idea disclosed below, in advance.
- Also, the terms used in the present specification or the claims are concepts that have been selected for convenience of descriptions. Upon grasping the meaning; they are not to be limited to the dictionary meaning, but properly construed on the technical concepts of the present disclosure.
- Firstly, a turbo compression system according to the first embodiment of the present disclosure will be described.
-
FIG. 1 is a view showing schematically a turbo compression system according to the first embodiment of the present disclosure,FIG. 2 is a view showing an operating status of the turbo compression system ofFIG. 1 , which is operated at the design point (D2) of the two-stage turbo compression system for high pressure, andFIG. 3 is a view showing an operating status of the turbo compression system ofFIG. 1 , which is operated at the design point (D1) of the single-stage dual-intake turbo compression system for low pressure. - Referring to
FIGS. 1 to 3 , aturbo compression system 100 according to the first embodiment of the present disclosure comprises afirst impeller 120 connected at a outlet of thefirst impeller 120 with a firstdischarge flow path 121 which is connected to a seconddischarge flow path 170 with a first valve (130), asecond impeller 160 connected to a secondintake flow path 151 in which a fluid is flown by asecond valve 150 and connected with a seconddischarge flow path 170 at a outlet of thesecond impeller 160, amotor 110 driving thefirst impeller 120 and thesecond impeller 160, and acompression flow path 141 of which one end is connected to thefirst valve 130 and the other end is coupled to the secondintake flow path 151 at the downstream of the second valve (150). - The
first valve 130 is desirable to be provided with a three-way valve and thesecond valve 150 is desirable to be provided with a solenoid valve. - The
first valve 130 and thesecond valve 150 are provided to be capable of controlling their on/off action. Thereby we may select either an operating at the design point (D2) of two-stage turbo compression system for high pressure or an operating at the design point (D1) of single-stage dual-intake turbo compression system for low pressure. It will be described later in detail referring toFIG. 4 . - According to the above-mentioned structure, since the flow path of intake fluid or discharge fluid may be controlled by properly operating the
first valve 130 and thesecond valve 150, theturbo compression system 100 according to the first embodiment of the present disclosure may selectively accomplish one of the single-stage dual-intake turbo compression system under low pressure, the two-stage turbo compression system discharging maximum flow rate under high pressure, and the two-stage turbo compression system discharging minimum flow rate under low pressure. - Concretely, as shown in
FIG. 2 , in case that thesecond valve 150 is closed and thefirst valve 130 is controlled to connect the firstdischarge flow path 121 with thecompression flow path 141, theturbo compression system 100 according to the present embodiment operates as the two-stage turbo compression system which can discharge maximum flow rate under high pressure or minimum flow rate under low pressure. - In this cases, after the fluid flowing into the
first impeller 120 through a first intake path (i) is firstly compressed by the first impeller 120 (first stage compression), it is secondary compressed by the second impeller 160 (second stage compression) in which the fluid flows through the firstdischarge flow path 121, thefirst valve 130, thecompression flow path 141 and secondintake flow path 151, in a series. - On the other hand, as shown in
FIG. 3 , in case that thesecond valve 150 is open and thefirst valve 130 is controlled to connect the firstdischarge flow path 121 with the seconddischarge flow path 170 and close thecompression flow path 141, theturbo compression system 100 according to the present embodiment operates as the single-stage dual-intake turbo compression system which can discharge the flow rate of design point (D1) under low pressure of design point (D1). - In this cases, the fluid flowing into the
first impeller 120 through the first intake path (i) is compressed by the first impeller 120 (single stage compression) and then discharged through the seconddischarge flow path 170, and the fluid flowing into thesecond impeller 160 through thesecond valve 150 is compressed by the second impeller 160 (single stage compression) and then discharged through the seconddischarge flow path 170. - Additionally, in case that less minimum flow rate is required at the low pressure region, the operating range to be capable of operating with the minimum flow rate at a low pressure region is increased by operating the
turbo compression system 100 according to the present embodiment at the design point (D2) of the two-stage turbo compression system. - In detail, it will be described referring to
FIG. 4 as follows. -
FIG. 4 is a view showing a pressure (P)-flow rate (Q) diagram at design points (D1, D2) of the turbo compression system ofFIG. 1 . - Referring to
FIG. 4 , theturbo compression system 100 according to the present embodiment, by properly controlling the operation of thevalves - That is, the
turbo compression system 100 according to the present embodiment may have the characteristics of both the two-stage turbo compression system and the single-stage dual-intake turbo compression system, because of that, the operating range to be capable of operating with the minimum flow rate at a low pressure region may be increased. - In the
turbo compression system 100 according to the present embodiment, it is desirable that thefirst impeller 120 and thesecond impeller 160 which are driven by single motor have same-sized diameter in order to have the same compression ratio at an equal rotation speed of the motor. - However, in case two motors are used for driving the
impellers impellers - Hereinafter, a turbo compression system according to the second embodiment of the present disclosure will be described.
-
FIG. 5 is a view showing schematically a turbo compression system according to the second embodiment of the present disclosure,FIG. 6 is a view showing an operating status of the turbo compression system ofFIG. 5 , which is operated at the design point (D2) of the two-stage turbo compression system for high pressure, andFIG. 7 is a view showing an operating status of the turbo compression system ofFIG. 5 , which is operated at the design point (D1) of the single-stage dual-intake turbo compression system for low pressure. - Referring to
FIGS. 5 to 7 , theturbo compression system 200 according to this embodiment comprises afirst impeller 220 connected to a firstdischarge flow path 232 at its outlet and communicating with a seconddischarge flow path 270 by passing through afirst valve 230 and a firstcompression flow path 231 in sequence, afirst motor 210 driving thefirst impeller 220, asecond impeller 260 connected at its outlet to the seconddischarge flow path 270 and connected at its inlet to a secondintake flow path 243 having asecond valve 240 which selectively closes one of the secondcompression flow path 241 branching off from the seconddischarge flow path 270 at thefirst valve 230 and aintake flow path 242 for inflowing fluid to be compressed from outside, and asecond motor 250 driving thesecond impeller 220. - It is desirable that the
first valve 230 and thesecond valve 240 are also provided with a three-way valve. - The
turbo compression system 200 according to this embodiment may operate as the two-stage turbo compression system which can discharge maximum flow rate under high pressure or minimum flow rate under low pressure. - For this operation, the
first valve 230 is controlled to be connected to the secondcompression flow path 241, and thesecond valve 240 is controlled to be shut off so as to prevent from inflowing fluid through the intake flow path and also controlled to flow the fluid passing through thefirst valve 230 into thesecond impeller 260. - In this cases, after the fluid flowing into the
first impeller 120 through a firstintake flow path 221 is firstly compressed by the first impeller 220 (first stage compression), it is secondary compressed by the second impeller 260 (second stage compression) in which the fluid flows through the secondcompression flow path 241 and then the fluid is discharged through the seconddischarge flow path 270. - On the other hand, the
turbo compression system 100 according to the present embodiment may operate as the single-stage dual-intake turbo compression system which can discharge the flow rate of design point (D1) under low pressure of design point (D1). - For this operation, the
first valve 230 is open so as to communicating with the firstcompression flow path 231 and thesecond valve 240 is controlled to communicating theintake flow path 241 with the secondintake flow path 243 so as to allow the fluid to flow in from outside. - In this cases, the fluid flowing into the
first impeller 120 through the firstintake flow path 221 is compressed by the first impeller 220 (single stage compression) and then discharged through the seconddischarge flow path 270, and the fluid flowing into thesecond impeller 260 through thesecond valve 250 is compressed by the second impeller 260 (single stage compression) and then discharged through the seconddischarge flow path 270.
Claims (13)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2012-0058317 | 2012-05-31 | ||
KR20120058317A KR101360799B1 (en) | 2012-05-31 | 2012-05-31 | Hybrid 2 stage turbo compressor |
PCT/KR2013/004851 WO2013180538A1 (en) | 2012-05-31 | 2013-05-31 | Turbo compression system |
Publications (1)
Publication Number | Publication Date |
---|---|
US20150110606A1 true US20150110606A1 (en) | 2015-04-23 |
Family
ID=49673654
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US14/403,384 Abandoned US20150110606A1 (en) | 2012-05-31 | 2013-05-31 | Turbo compression system |
Country Status (6)
Country | Link |
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US (1) | US20150110606A1 (en) |
EP (1) | EP2857692A4 (en) |
JP (1) | JP2015518113A (en) |
KR (1) | KR101360799B1 (en) |
CN (1) | CN104364530A (en) |
WO (1) | WO2013180538A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US9938967B2 (en) | 2014-10-29 | 2018-04-10 | Emerson Climate Technologies, Inc. | Reciprocating compressor system |
CN107044437A (en) * | 2017-05-22 | 2017-08-15 | 无锡商业职业技术学院 | The regulation and control system of compound compressor |
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US8800310B2 (en) * | 2008-02-06 | 2014-08-12 | Ihi Corporation | Turbo compressor and refrigerator |
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FR577936A (en) * | 1923-02-27 | 1924-09-12 | Erste Bruenner Maschinen Fab | Multi-stage rotary compressor |
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FR1334393A (en) * | 1962-06-18 | 1963-08-09 | Rateau Soc | Improvement in anti-pumping devices for coils or groups of compressors |
JPS5025105U (en) * | 1973-06-28 | 1975-03-22 | ||
KR100253250B1 (en) | 1998-02-26 | 2000-05-01 | 구자홍 | Turbo compressor |
KR19990075384A (en) * | 1998-03-20 | 1999-10-15 | 이헌석 | Compact Turbo Compressor |
KR100273433B1 (en) | 1998-07-01 | 2001-01-15 | 구자홍 | Drive motor cooling structure of turbo compressor |
KR100304562B1 (en) | 1998-07-23 | 2001-12-12 | 구자홍 | Turbo compressor |
JP2000097189A (en) * | 1998-09-21 | 2000-04-04 | Teral Kyokuto Inc | Piping for speed-up water supplying pump, operation control method, and control device |
US7107972B1 (en) * | 2004-08-03 | 2006-09-19 | Accessible Technologies, Inc. | Multi-phase centrifugal supercharging air induction system |
JP2007064139A (en) * | 2005-09-01 | 2007-03-15 | Shimadzu Corp | High speed rotation device |
DE102007024584B4 (en) * | 2007-05-25 | 2010-06-02 | Audi Ag | Device for charging internal combustion engines |
WO2009056987A2 (en) * | 2007-11-01 | 2009-05-07 | Danfoss Turbocor Compressors Bv. | Multi-stage compressor |
GB2469015B (en) * | 2009-01-30 | 2011-09-28 | Compair Uk Ltd | Improvements in multi-stage centrifugal compressors |
JP5320366B2 (en) * | 2010-09-28 | 2013-10-23 | 株式会社神戸製鋼所 | Compression device |
-
2012
- 2012-05-31 KR KR20120058317A patent/KR101360799B1/en active IP Right Grant
-
2013
- 2013-05-31 CN CN201380028423.8A patent/CN104364530A/en active Pending
- 2013-05-31 WO PCT/KR2013/004851 patent/WO2013180538A1/en active Application Filing
- 2013-05-31 US US14/403,384 patent/US20150110606A1/en not_active Abandoned
- 2013-05-31 EP EP13796768.3A patent/EP2857692A4/en not_active Withdrawn
- 2013-05-31 JP JP2015514924A patent/JP2015518113A/en active Pending
Patent Citations (2)
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US6675594B2 (en) * | 2001-11-20 | 2004-01-13 | Lg Electronics Inc. | Cooling system and cooling method |
US8800310B2 (en) * | 2008-02-06 | 2014-08-12 | Ihi Corporation | Turbo compressor and refrigerator |
Also Published As
Publication number | Publication date |
---|---|
JP2015518113A (en) | 2015-06-25 |
EP2857692A1 (en) | 2015-04-08 |
EP2857692A4 (en) | 2016-03-02 |
WO2013180538A1 (en) | 2013-12-05 |
KR101360799B1 (en) | 2014-02-12 |
CN104364530A (en) | 2015-02-18 |
KR20130134656A (en) | 2013-12-10 |
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