WO2011105720A2 - 리니어 압축기 - Google Patents
리니어 압축기 Download PDFInfo
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- WO2011105720A2 WO2011105720A2 PCT/KR2011/001124 KR2011001124W WO2011105720A2 WO 2011105720 A2 WO2011105720 A2 WO 2011105720A2 KR 2011001124 W KR2011001124 W KR 2011001124W WO 2011105720 A2 WO2011105720 A2 WO 2011105720A2
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- Prior art keywords
- voltage
- motor
- unit
- current
- linear compressor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
- F04B17/04—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors using solenoids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
- F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/127—Mounting of a cylinder block in a casing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
- F04B49/065—Control using electricity and making use of computers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/04—Motor parameters of linear electric motors
- F04B2203/0401—Current
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B2203/00—Motor parameters
- F04B2203/04—Motor parameters of linear electric motors
- F04B2203/0402—Voltage
Definitions
- the present invention relates to a linear compressor, and more particularly, to a linear compressor that allows accurate calculation in the calculation of voltage using current while removing a high capacity capacitor connected in series with a motor.
- a motor is also provided in a compressor, a mechanical device that increases power by compressing air, refrigerant, or various working gases by receiving power from a power generator such as an electric motor or a turbine. Or widely used throughout the industry.
- a reciprocating compressor for compressing the refrigerant while linearly reciprocating the piston inside the cylinder is formed by forming a compression space in which the working gas is absorbed and discharged between the piston and the cylinder.
- Rotary compressor that compresses the refrigerant while the roller is eccentrically rotated along the inner wall of the cylinder so that a compression space for absorbing and discharging the working gas is formed between the reciprocating compressor and the eccentrically rotating roller and the cylinder.
- Scroll compressor that compresses the refrigerant while the rotating scroll rotates along the fixed scroll by forming a compression space for absorbing and discharging the working gas between the orbiting scroll and the fixed scroll.
- the piston is directly connected to the reciprocating linear motion drive motor, so that there is no mechanical loss due to the motion conversion to improve the compression efficiency as well as a simple linear compressor has been developed a lot.
- FIG. 1 is a block diagram of a motor control device applied to a linear compressor according to the prior art.
- the motor control apparatus applies a diode bridge 11 for receiving and rectifying an AC power, which is a commercial power source, and outputting the rectified part, a rectifying unit including a capacitor C1 smoothing the rectified voltage, and applying a DC voltage.
- a motor including an inverter unit 12, a motor 13, and a capacitor C2 connected in series with the motor 13, which are converted into an AC voltage according to a control signal from the controller 17 and provided to the motor unit.
- a voltage detector 14 that detects the voltage across the capacitor C1
- a current detector 15 that detects a current flowing in the motor unit, a sense voltage from the voltage detector 14, and a current detector 15
- a calculation unit 16 for calculating the counter electromotive force (EMF) from the sense current from the control unit 16, and a control unit 17 for generating a control signal by reflecting the deferred power from the calculation unit 16 and the sense current from the current detection unit 15.
- the linear compressor according to the prior art of FIG. 1 requires a cost and space for providing the capacitor C2 in the linear compressor due to the high capacity capacitor C2 connected in series with the motor 13.
- the capacity of the capacitor C2 determines the variable cooling power according to the load, but in the prior art, it is not easy to change the capacity of the capacitor C2, and a plurality of capacitors are provided to selectively connect the capacitors.
- cost and space also come with design difficulties.
- FIG. 2 is a graph showing changes in the input voltage and the stroke of the motor in FIG. 1.
- simply removing the capacitor C2 reduces the voltage applied to the motor at a larger stroke, that is, in the region close to the top dead center (TDC), as shown in FIG. A phenomenon (jumping phenomenon) occurs, and the cold stroke variable operation (under stroke operation) becomes impossible.
- TDC top dead center
- the initial value of the current value must be set correctly.
- FIG. 3 is an integrated curve graph of current according to the prior art.
- the initial value of the current at the peak of the current i can be set as points A, B and C.
- the peak of the actual current (i) corresponds to the point (C)
- point (B) is lower than the point (C)
- point (A) is lower than the point (B).
- the voltage (Va) graph when the point (A) is set to the peak the voltage (Vb) graph when the point (B) is set to the peak, and the voltage when the point (C) is set to the peak (
- the integrated values result in the voltage (Va) graph having the highest peak, followed by the voltage (Vb) graph, and the lowest is the voltage (Vc) graph. That is, depending on how the initial value at the current peak is set, there is a significant difference in the integrated voltage. Thus, if the initial value of the current peak is inappropriate, the current integrated value is constantly accumulated in the offset value, making it unsuitable for accurate control.
- An object of the present invention is to provide a linear compressor capable of variable cooling control while removing a capacitor connected to a motor of the linear compressor.
- an object of the present invention is to provide a linear compressor that allows accurate voltage calculation by removing direct current components due to the accumulation of offset in the process of calculating voltage using current.
- an object of the present invention is to provide a linear compressor that allows a simple and accurate calculation of the process of calculating the voltage using the current using hardware.
- the linear compressor according to the present invention includes a fixed member including a compression space therein, a movable member for compressing refrigerant sucked into the compression space while reciprocating linearly moving in the fixed member, and installed to elastically support the movable member in the direction of movement of the movable member.
- a mechanical unit comprising at least one spring and a motor installed to be connected to the movable member to reciprocate linearly the movable member in the axial direction, a rectifier for receiving an AC power and outputting the DC voltage, and receiving a DC voltage to control signals
- the inverter unit converts into an AC voltage and provides the motor to the motor, a current sensing unit for sensing a current flowing between the motor and the inverter unit, an integrator circuit unit for integrating a voltage corresponding to the current from the current sensing unit, and an integrator circuit unit.
- the moving part receives the integral value from the controller and controls the AC voltage applied to the motor.
- an electrical control unit including a control unit for causing the reciprocating motion of the ash to be performed.
- the controller may generate and apply a control signal to the inverter unit to generate an AC voltage corresponding to a difference between the set voltage and the attenuation voltage corresponding to the integral value.
- the controller preferably calculates the attenuation voltage by multiplying the integral value by a constant (1 / Cr).
- a control part adjusts and controls cold power variable rate by changing a constant (1 / Cr).
- the integrator circuit may further include an integrator that receives a reference voltage Vref greater than 0V and outputs an integral value that is varied around the reference voltage Vref.
- the integrator further includes an amplifier having an inverting input terminal into which a voltage from the current sensing unit is input and a non-inverting terminal into which a reference voltage Vref is input, and a parallel-connected capacitor and a resistor for returning the output voltage of the amplifier to the inverting input terminal. It is preferable that the configuration.
- the cutoff frequency determined by the parallel-connected capacitor and the resistance is preferably set lower than the frequency of the current or the operating frequency.
- the integrator circuit section includes a voltage amplifier section for amplifying a voltage corresponding to the current from the current sensing section, and a coupling section for blocking a DC offset included in the output voltage of the voltage amplifier section, before the integrator section. It is preferable to apply the output of the coupling section to the input of the inverting input terminal of the integration section.
- the integrator circuit portion preferably includes a low band filter portion for removing noise included in the output voltage of the integrator portion.
- control method of the linear compressor according to the present invention includes a fixed member including a compression space therein, a movable member for compressing the refrigerant sucked into the compression space inside the fixed member, at least one spring installed to elastically support the movable member; And a motor installed to be connected to the movable member and having a motor for reciprocating linear movement of the movable member in the axial direction, the control method comprising: a first step of applying a predetermined applied voltage to the motor; A second step of generating a first input voltage corresponding to a current by application of a predetermined applied voltage; Calculating a first output voltage by integrating the generated first input voltage; A fourth step of generating a first attenuation voltage by attenuating the calculated first output voltage at a predetermined ratio; A fifth step of calculating a first motor applied voltage corresponding to the difference between the applied voltage and the first attenuation voltage; And a sixth step of applying the first motor applying voltage to the motor.
- the present invention has the effect of allowing the control of the cooling power variable and cooling power variable rate while removing the capacitor connected to the motor of the linear compressor.
- the present invention has the effect of preventing the stroke jump phenomenon that can occur during the control of the linear compressor.
- the present invention in the process of calculating the voltage using the current, by removing the direct current component due to the accumulation of the offset, to enable accurate voltage calculation, the effect of precise control of the motor and to prevent fluctuation (fluctuation) have.
- the present invention has the effect of allowing a simple and accurate calculation of the process of calculating the voltage using the current using hardware.
- FIG. 1 is a block diagram of a motor control device applied to a linear compressor according to the prior art.
- FIG. 2 is a graph showing changes in the input voltage and the stroke of the motor in FIG. 1.
- 3 is an integrated curve graph of current according to the prior art.
- FIG. 4 is a control block diagram of a first embodiment of the linear compressor according to the present invention.
- 5 is a control embodiment of the controller of FIG. 4.
- FIG. 6 is another control embodiment of the controller of FIG. 4.
- FIG. 7 is a configuration diagram of a linear compressor according to the present invention.
- FIG. 11 is a control block diagram of a second embodiment of the linear compressor according to the present invention.
- FIG. 12 is a detailed block diagram of the integrator circuit of FIG. 11.
- FIG. 13 is a control embodiment of the control unit of FIG. 11.
- FIG. 14 is a waveform graph of the attenuation voltage Vc in the control device of FIGS. 4 to 6.
- FIG. 15 is a waveform graph of the attenuation voltage Vc or Vo in the control device of FIGS. 11 to 13.
- FIG. 4 is a control configuration diagram of the first embodiment of the linear compressor according to the present invention
- FIG. 5 is a control embodiment of the control unit of FIG.
- the control configuration of the linear compressor includes a rectifier 21 for rectifying and smoothing and outputting an AC power, which is a commercial power source, and an AC according to a control signal from the controller 25 by receiving a DC voltage.
- Inverter section 22, which is converted into voltage and provided to motor 23, motor 23 including coil L, and coil 23 in motor 23 and inverter section 22 or motor 23 Calculate a motor applied voltage (Vmotor) to be applied to the motor 23 on the basis of the current sensing unit 24 for detecting the current flowing through the current and the sensed current from the current sensing unit 24, the load condition
- the control unit 25 and the voltage sensing the magnitude of the DC voltage from the rectifier 21 to generate and apply a control signal corresponding to the inverter unit 22 to vary the frequency of the motor applied voltage (Vmotor) according to the
- the sensing unit 26 is made.
- the configuration for supplying the voltage required for the control unit 25, the current sensing unit 24, the voltage sensing unit 26, and the like corresponds to a technical configuration that is natural
- the rectifier 21 includes a diode bridge for performing a general rectification function, a capacitor for smoothing the rectified voltage, and the like.
- the inverter unit 22 is a means for receiving a DC voltage, generating an alternating voltage, and applying the alternating voltage to the motor 23.
- the inverter unit 22 turns on / off the IGBT element according to the control signal from the IGBT element and the control unit 25. It is provided with the gate control part etc. which turn off.
- the inverter unit 22 is only a degree that is naturally recognized by those familiar with the technical field to which the present invention belongs, and the description thereof is omitted.
- the motor 23 has the coil L in the same way as a general motor in other mechanical configurations, but unlike the prior art, it does not include a capacitor.
- the current sensing unit 24 is an element that senses a current flowing in the conductive line between the inverter unit 22 and the motor 23 or senses a current flowing in the coil L of the motor 23.
- the voltage detector 26 is a device that detects a DC voltage output from the rectifier 21. In this case, the voltage detector 26 may detect the total DC voltage, or may detect the DC voltage reduced at a predetermined ratio.
- the controller 25 receives a start command of the linear compressor from the outside, or generates a control signal for applying a predetermined applied voltage Vin to the motor 23 when AC commercial power is applied, thereby generating an inverter unit ( 22). Accordingly, the inverter unit 22 generates an AC voltage corresponding to the applied voltage Vin and applies it to the motor 23.
- the current sensing unit 24 detects the current i from the inverter unit 22 to the motor 23 or the current i flowing through the coil L of the motor 23.
- the controller 25 receives the current i from the current detector 24 and performs a process as shown in FIG. 4.
- the control unit 25 calculates the attenuation voltage Vc by multiplying the integrated value by a constant 1 / Cr by the integrator 25a that integrates the current i from the current sensing unit 24. And an arithmetic unit 25c for calculating the difference between the set applied voltage Vin and the attenuation voltage Vc.
- the applied voltage Vin in the embodiment will correspond to the voltage applied by the inverter unit in the compressor of the prior art, and is fixed or variable according to the control algorithm of the nia compressor.
- the integrator 25a and the attenuator 25b correspond to the attenuation calculation unit that attenuates the influence of inductance by the coil L of the motor by using the current i flowing in the motor 23. That is, in this embodiment, since there is no capacitor connected to the coil L of the motor 23, the inductance effect by the coil L is controlled by controlling the motor applied voltage Vmotor applied to the motor 23 to reduce it. will be.
- the constant 1 / Cr in the attenuator 25b may be fixed or variably set according to the size of the coil L of the motor 23.
- the constant 1 / Cr may be determined accordingly.
- the constant 1 / Cr may be determined accordingly.
- the control unit 25 After the motor application voltage Vmotor is calculated, the control unit 25 generates a control signal for causing the inverter unit 22 to apply the calculated motor application voltage Vmotor to the motor 23, thereby inverting the inverter. It applies to the part 22. That is, the controller 25 allows the sensed current i to be fed back to the motor applied voltage Vmotor, thereby controlling the operation of the motor 23 even when the capacitor is not connected to the motor 23. . In the present invention, since the counter electromotive force is reflected and fed back to the current i, it does not need to be considered separately.
- the controller 25 may further include attenuation voltage (for example, the applied voltage Vin that integrates the motor applied voltage Vmotor with the applied voltage Vin which is an initial voltage and the current applied by the applied motor applied voltage Vmotor). ) Is repeatedly calculated and applied according to the difference from the first attenuation voltage) or the first attenuation voltage, etc.).
- attenuation voltage for example, the applied voltage Vin that integrates the motor applied voltage Vmotor with the applied voltage Vin which is an initial voltage and the current applied by the applied motor applied voltage Vmotor.
- the motor applied voltage Vmotor which is a required voltage
- the motor applied voltage Vmotor that is, the maximum value
- the DC voltage Vdc DC voltage
- the inverter section 22 applies an alternating voltage (motor applied voltage Vmotor) having a magnitude within this DC voltage Vdc to the motor 23.
- the control unit 25 adjusts the magnitude of the alternating voltage applied from the inverter unit 22 to the motor 23 so as to maintain the necessary cooling force.
- control unit 25 may achieve the required high cooling power by varying the frequency of the motor applied voltage Vmotor from the inverter unit 22, for example, by increasing the frequency at high load.
- FIG. 6 is another control embodiment of the controller of FIG. 4.
- Fig. 6 shows that the control unit may incorrectly select the peak of the current i, and thus integrates this incorrectly selected current to remove the direct current component (HPF) 25d generated by the accumulation of the offset generated. This is the case.
- HPF direct current component
- the integrator 25a and the attenuator 25b are represented as:
- the high pass filter 25d is expressed as:
- R is the resistance value and C is the capacitance.
- the high band filter 25d may be configured of a plurality of high band filters connected in series.
- FIG. 7 is a configuration diagram of a linear compressor according to the present invention.
- an inlet tube 32a and an outlet tube 32b through which a refrigerant flows in and out of one side of the sealed container 32 are installed, and a cylinder inside the sealed container 32.
- the piston 34 is installed to be fixed, and the piston 36 is installed inside the cylinder 34 so as to reciprocate linear movement so as to compress the refrigerant sucked into the compression space P inside the cylinder 34.
- an intake valve 52 is installed at one end of the piston 36 in contact with the compression space P
- a discharge valve assembly 54 is installed at one end of the cylinder 34 in contact with the compression space P. The intake valve 52 and the discharge valve assembly 54 are automatically adjusted to open and close according to the pressure in the compression space P, respectively.
- the airtight container 32 is installed so that the upper and lower shells are coupled to each other so that the inside is sealed, and an inlet tube 32a through which the refrigerant is introduced and an outlet tube 32b through which the refrigerant is discharged are installed, and a cylinder ( 34, the piston 36 is installed so as to be elastically supported in the movement direction for reciprocating linear motion, and the linear motors 40 are assembled to each other by the frame 48 outside the cylinder 34 to form an assembly.
- the assembly is installed to be elastically supported by the support spring 59 on the bottom surface of the sealed container (32).
- a predetermined oil is contained in the bottom surface of the airtight container 32, and an oil supply device 60 for pumping oil is installed at the bottom of the assembly, and oil is supplied to the inside of the lower frame 48 of the assembly.
- An oil supply pipe 48a is formed to be supplied between the cylinders 34, so that the oil supply device 60 is operated by the vibration generated by the reciprocating linear movement of the piston 36 to pump oil, and The oil is supplied to the gap between the piston 36 and the cylinder 34 along the oil supply pipe 48a to cool and lubricate.
- the cylinder 34 is formed in a hollow shape so that the piston 36 can reciprocate linearly, and a compression space P is formed at one side, and one end is located close to the inside of the inlet pipe 32a. It is preferable to be provided on the same straight line as the inflow pipe 32a.
- the cylinder 34 has a piston 36 installed in one end close to the inlet pipe 32a so as to reciprocate linearly, and a discharge valve assembly 54 is installed at one end opposite to the inlet pipe 32a. .
- the discharge valve assembly 54 is a discharge cover 54a is installed to form a predetermined discharge space on one end of the cylinder 34, and the discharge valve is installed to open and close one end of the compression space (P) side of the cylinder ( 54b) and a valve spring 54c, which is a kind of coil spring that imparts an elastic force in the axial direction between the discharge cover 54a and the discharge valve 54b, and has an O-ring R around one end of the cylinder 34. It is installed so that the discharge valve 54a is in close contact with one end of the cylinder (34).
- a curved loop pipe 58 is installed between one side of the discharge cover 54a and the outlet pipe 32b.
- the loop pipe 58 not only guides the compressed refrigerant to be discharged to the outside. Vibration caused by the interaction of the cylinder 34, the piston 36, and the linear motor 40 buffers the transmission of the entire sealed container 32.
- valve spring 54c is compressed to open the discharge valve 54b.
- the refrigerant is discharged from the compressed space P, and then completely discharged along the loop pipe 58 and the outlet pipe 32b.
- the piston 36 has a refrigerant passage 36a formed at the center so that the refrigerant flowing from the inlet pipe 32a flows, and one end of the piston 36 adjacent to the inlet pipe 32a is connected by the linear motor. 40 is installed to be directly connected, and the suction valve 52 is installed at one end of the inflow pipe 32a in the opposite direction, and is installed to be elastically supported by various springs in the movement direction of the piston 36.
- the suction valve 52 is formed in a thin plate shape so that the center portion is partially cut to open and close the refrigerant passage 36a of the piston 36, and one side is fixed by a screw to one end of the piston 36a. It is installed as possible.
- the suction valve 52 is opened to compress the refrigerant.
- the suction in the space P and the pressure in the compression space P becomes equal to or greater than a predetermined suction pressure, the refrigerant in the compression space P is compressed while the suction valve 52 is closed.
- the piston 36 is installed so as to be elastically supported in the movement direction.
- a piston flange 36b protruding in a radial direction at one end of the piston 36 proximate to the inflow pipe 32a includes a mechanical spring such as a coil spring or the like.
- the refrigerant is elastically supported in the movement direction of the piston 36 by 38a, 38b, and the refrigerant contained in the compression space P on the opposite side to the inflow pipe 32a acts as a gas spring by its elastic force, thereby causing the piston 36 It will elastically support.
- the mechanical springs 38a and 38b have a constant mechanical spring constant K m regardless of the load, and the mechanical springs 38a and 38b are fixed to the linear motor 40 based on the piston flange 36b.
- the predetermined support frame 56 and the cylinder 34 are installed side by side in the axial direction, respectively, the mechanical spring 38a supported by the support frame 56 and the mechanical spring 38a installed in the cylinder 34.
- the gas spring has a variable gas spring constant (K g ) depending on the load, the gas contained in the compression space (P) is the elastic force increases as the pressure of the refrigerant increases as the ambient temperature increases.
- K g variable gas spring constant
- the gas spring has a larger gas spring constant K g as the load increases.
- the mechanical spring constant (K m ) is constant, while the gas spring constant (K g ) is variable depending on the load, so the overall spring constant is also variable depending on the load, and the natural frequency (f n ) of the piston is also the gas It depends on the spring constant K g .
- this load can be measured in various ways, but since such a linear compressor is configured to be included in a refrigeration / air conditioning cycle in which the refrigerant is compressed, condensed, evaporated, and expanded, the load is the condensing pressure which is the pressure at which the refrigerant is condensed. It can be defined as the difference in the evaporation pressure, which is the pressure at which the refrigerant is evaporated, and further determined in consideration of the average pressure obtained by averaging the condensation pressure and the evaporation pressure in order to increase the accuracy.
- the load is calculated to be proportional to the difference between the condensation pressure and the evaporation pressure and the average pressure, and as the load increases, the gas spring constant K g increases.
- the load between the condensation pressure and the evaporation pressure increases. Even if the difference between the condensation pressure and the evaporation pressure is the same, the larger the average pressure is, the greater the load is, and the larger the gas spring constant K g is calculated corresponding to the load.
- the linear compressor may be provided with a sensor (pressure sensor, temperature sensor, etc.) for calculating the load.
- the load is measured so as to measure the condensation temperature which is substantially proportional to the condensation pressure and the evaporation temperature which is proportional to the evaporation pressure, and is proportional to the difference between the condensation temperature and the evaporation temperature and the average temperature.
- the mechanical spring constant (K m ) and the gas spring constant (K g ) can be determined through various experiments, and the resonance frequency of the piston is increased according to the load by increasing the ratio of the gas spring constant to the total spring constant. It can be varied in a relatively wide range.
- the linear motor 40 is configured such that a plurality of laminations 42a are stacked in the circumferential direction, and an inner stator 42 installed to be fixed to the outside of the cylinder 34 by the frame 48 and a coil wound configured to wind the coils.
- the outer stator 44 is configured such that a plurality of laminations 44b are laminated in the circumferential direction around the hull 44a and is provided with a predetermined gap with the inner stator 42 outside the cylinder 34 by the frame 48.
- a permanent magnet 46 positioned in the gap between the inner stator 42 and the outer stator 44 and installed to be connected by the piston 36 and the connecting member 47, wherein the coil winding body 44a is provided. May be installed to be fixed to the outer side of the inner stator 42.
- the linear motor 40 corresponds to one embodiment of the motor 23 described above.
- the cooling force variable can be performed in a stable state. That is, the controller 25 controls the AC voltage applied to the motor 23 so that the stroke of the piston 36 as the movable member and the magnitude of the AC voltage applied to the motor 23 are proportional to the piston in response to the load. It is possible to perform the natural cold power variable by the reciprocating motion of (36).
- the stroke of the piston 36 and the magnitude of the alternating voltage applied to the motor 36 are proportional to at least in the region close to the top dead center of the movable member, thereby preventing stroke jump.
- the controller 25 stores the variable constant 1 / Cr. As shown in Fig. 9, in the case of Cr (10 kPa), it is confirmed that the cooling force of the linear compressor is variable in response to the load.
- the controller 25 can adjust the cooling force variable rate by varying the constant 1 / Cr (or Cr).
- the phase difference between the motor applied voltage Vmotor and the current i is reduced, so that more cold power can be exerted under the same load. That is, the LC resonance frequency is determined by the value of Cr, and the phase of the motor applied voltage (Vmotor) and the current (i) at a predetermined load is determined.
- the motor applied voltage (Vmotor) and The phase of the current i is changed so that the total power is changed. In other words, since the cooling power becomes larger or smaller, the natural cooling power variable rate is different.
- FIGS. 10 are voltage graphs of a linear compressor according to the present invention.
- the attenuation voltage Vc calculated from the current i is subtracted from the applied voltage Vin to calculate the actual motor applied voltage Vmotor, which is applied to the coil (Vmotor).
- Vmotor the actual motor applied voltage
- the A / D resolution of the microprocessor constituting the control unit 25 is significantly affected, and the output of the integrator 25a is 2 to 30V. Since fluctuation of degree may occur, there is a fear that fluctuation may occur in the cold power itself. To further supplement these points, the following hardware integrating apparatus can be applied.
- FIG. 11 is a control block diagram of a second embodiment of the linear compressor according to the present invention
- FIG. 12 is a detailed block diagram of the integrator circuit of FIG.
- an AC power source In the control configuration diagram of FIG. 11, an AC power source, a rectifying section 21, an inverter section 22, a motor 23, a current sensing section 24, indicated by the same identification number as the control configuration diagram of FIG. 4,
- the voltage detector 26 performs the same circuit configuration and function.
- the control device (electrical control unit) of FIG. 11 receives an input voltage Vi corresponding to a current flowing through the motor 23 from the current sensing unit 24 and performs integration to control the output voltage Vo. Is applied to the integrator circuit unit 27, the integrator circuit unit 27, the output voltage Vo and the voltage from the voltage sensing unit 26, and generates the motor applied voltage Vmotor to the inverter unit 22. And a control unit 28 for generating and controlling the control signal. Also in this embodiment, a power supply device for supplying a DC voltage or the like for driving the control unit 28 and the inverter unit 22 will be provided, but to those familiar with the technical field to which the present invention pertains, its configuration and functions are obvious. It is only a recognized degree, and the description is omitted.
- the integrator circuit 27 includes a voltage amplifier a for amplifying the input voltage Vi from the current detector 24 and an output voltage V11 of the voltage amplifier a.
- a low band filter unit (d) for removing the noise included in
- the voltage amplifying unit a includes an resistor R1, an inverting input terminal receiving an input voltage Vi through the resistor R1, an amplifier Amp1 having a grounded non-inverting input terminal, and an amplifier ( And a resistor R2 and a capacitor C2 connected in parallel to return the output voltage V11 of Amp1 to the inverting input terminal of the amplifier Amp1.
- the voltage amplifier a is an element that amplifies the voltage because the output voltage Vi of the current sensing unit 24 has a low scale.
- Equation 3 The relationship between the input voltage V1 and the voltage V11 in the voltage amplifying unit a is as shown in Equation 3 below.
- Z2 (R2
- the cut-off frequency by the capacitor C2 and the resistor R2 is set to, for example, 1 kHz or less, so as to remove switching noise and the like generated in the previous step or the previous component. To perform.
- the coupling part b includes a capacitor C5 for removing the DC offset and a resistor R5 connected in series with the capacitor C5 to stabilize the waveform of the voltage V11.
- the integrating unit c includes an amplifier Amp2 having an inverting input terminal through which the voltage V11 is input through the coupling unit b, and a non-inverting input terminal through which the reference voltage Vref is input, and the amplifier Amp2. It consists of a capacitor (C6) and a resistor (R6) connected in parallel to return the output voltage (V44) of the amplifier (Amp2) to the inverting input terminal.
- the reference voltage Vref to the non-inverting input terminal of the amplifier Amp2 is determined by Equation 4 as follows.
- Vd corresponds to a DC voltage, for example, 15V
- the reference voltage Vref may be set to 2.5V, for example.
- This reference voltage Vref is input to the non-inverting terminal through the resistor R20.
- the AC portion of the AC waveform is removed by the coupling part b, and fluctuates up and down on the basis of 0V.
- Such a voltage waveform is changed up and down based on the reference voltage Vref by the reference voltage Vref, so that processing to a desired size is easily performed between 0 and 5V of the controller 28 including a microprocessor and the like. do.
- the reference voltage Vref also corresponds to the input voltage level of the controller 28.
- Z5 is the impedance according to the capacitor C5 and the resistor R5
- Z6 is the impedance according to the capacitor C6 and the resistor R6.
- the low band filter part d includes a resistor R9 to which a voltage V44 is applied, one end of which is connected to the resistor R9, and the other end of the capacitor C9 that is grounded.
- the low band filter part (d) is for removing the noise component when high frequency noise is applied to the applied voltage waveform.
- the low band filter unit (d) may remove switching noise of 5 kHz or more.
- the voltage Vo from which the noise is removed is applied to the controller 28.
- the control unit 28 receives a start command of the linear compressor from the outside, or generates a control signal for applying a predetermined applied voltage Vin to the motor 23 when AC commercial power is applied, thereby generating an inverter unit ( 22). Accordingly, the inverter unit 22 generates an AC voltage corresponding to the applied voltage Vin and applies it to the motor 23.
- the current sensing unit 24 senses the current i flowing from the inverter unit 22 to the motor 23 or the current i flowing through the coil L of the motor 23, The input voltage Vi corresponding to this current i is applied to the integrator circuit portion 27.
- the integrator circuit unit 27 receives the voltage Vi from the current sensing unit 24, performs the processing by the above-described device, and applies the voltage Vo to the controller 28.
- the capacity of the capacitor C2 included in the prior art is significantly larger than that of the capacitors C2, C5, C6, and C9 provided in FIGS. 11 and 12 to operate.
- FIG. 13 is a control embodiment of the control unit of FIG. 11.
- the controller 28 includes an attenuator 28a that multiplies the voltage Vo by a constant 1 / Cr to calculate the attenuation voltage Vc, a set applied voltage Vin, and attenuation voltage.
- the applied voltage Vin in the embodiment will correspond to the voltage applied by the inverter unit in the compressor of the prior art, and is fixed or variable according to the control algorithm of the nia compressor.
- the integrator circuit portion 27 and the attenuator 28a correspond to attenuation calculating section for attenuating the inductance effect by the coil L of the motor using the current i flowing in the motor 23. That is, in this embodiment, since there is no capacitor connected to the coil L of the motor 23, the inductance effect by the coil L is controlled by controlling the motor applied voltage Vmotor applied to the motor 23 to reduce it. will be.
- the attenuator 28a may be optionally provided. That is, in the integration process of the voltage Vo, the constant 1 / Cr may be adjusted to be reflected, whereby the voltage Vo and the voltage Vc are the same.
- the control unit 28 may include an attenuator 28a and multiply the voltage Vo by a constant 1 / Cr to calculate the voltage Vc. This process is apparent by varying the constant (Cr) as shown in Figure 9, it is possible to adjust and change the cooling power variable rate.
- the control unit 28 After the motor application voltage Vmotor is calculated, the control unit 28 generates a control signal for causing the inverter unit 22 to apply the calculated motor application voltage Vmotor to the motor 23, thereby inverting the inverter. It applies to the part 22. That is, the controller 28 allows the sensed current i to be fed back to the motor applied voltage Vmotor, thereby controlling the operation of the motor 23 even when the capacitor is not connected to the motor 23. . In the present invention, since the counter electromotive force is reflected and fed back to the current i, it does not need to be considered separately.
- the controller 28 may further include attenuation voltage (for example, the applied voltage Vin) that integrates the motor applied voltage Vmotor with the applied voltage Vin which is an initial voltage and the current by the applied motor applied voltage Vmotor. ) Is repeatedly calculated and applied according to the difference from the first attenuation voltage) or the first attenuation voltage, etc.).
- attenuation voltage for example, the applied voltage Vin
- the motor applied voltage Vmotor which is a required voltage
- the motor applied voltage Vmotor that is, the maximum value
- the DC voltage Vdc DC voltage
- the inverter section 22 applies an alternating voltage (motor applied voltage Vmotor) having a magnitude within this DC voltage Vdc to the motor 23.
- the control unit 28 adjusts the magnitude of the alternating voltage applied from the inverter unit 22 to the motor 23 so as to maintain the necessary cooling force.
- control unit 28 may achieve the required high cooling power by varying the frequency of the motor applied voltage Vmotor from the inverter unit 22, for example, by increasing the frequency at high load.
- FIG. 14 is a waveform graph of the attenuation voltage Vc in the control device (first embodiment) of FIGS. 4 to 6. As shown in FIG. 14, in the control apparatus according to the first embodiment, it is confirmed that fluctuation occurs frequently in the region F. As shown in FIG. 14, in the control apparatus according to the first embodiment, it is confirmed that fluctuation occurs frequently in the region F. As shown in FIG.
- FIG. 15 is a waveform graph of the attenuation voltage Vc or Vo in the control device (second embodiment) of FIGS. 11 to 13. As shown in FIG. 15, it is confirmed that the control device according to the second embodiment hardly causes fluctuations in the voltage waveform. According to this stable voltage waveform, the control unit can be precise motor control, and the dispersion does not occur even in the cold power itself.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Positive-Displacement Pumps (AREA)
- Control Of Linear Motors (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
Description
Claims (15)
- 내부에 압축공간을 포함하는 고정부재와, 고정부재 내부에서 왕복 직선운동하면서 압축공간으로 흡입된 냉매를 압축시키는 가동부재와, 가동부재를 가동부재의 운동방향으로 탄성 지지하도록 설치된 적어도 하나 이상의 스프링과, 가동부재와 연결되도록 설치되어 가동부재를 축방향으로 왕복 직선운동시키는 모터로 이루어지는 기계 유닛과;교류전원을 입력받아 직류 전압으로 출력하는 정류부와, 직류전압을 인가받아 제어 신호에 따라 교류전압으로 변환하여 모터에 제공하는 인버터부와, 모터와 인버터부 사이에 흐르는 전류를 감지하는 전류 감지부와, 전류 감지부로부터의 전류에 대응하는 전압을 적분하는 적분기 회로부와, 적분기 회로부로부터 적분값을 인가받아, 모터로 인가되는 교류 전압을 제어하여 가동부재의 왕복 운동이 수행되도록 하는 제어부를 포함하는 전기 제어 유닛으로 구성된 것을 특징으로 하는 리니어 압축기.
- 제1항에 있어서, 제어부는 설정 전압과, 적분값에 대응하는 감쇄 전압 간의 차이에 해당되는 교류전압이 생성되도록 하는 제어 신호를 생성하여 인버터부로 인가하는 것을 특징으로 하는 리니어 압축기.
- 제2항에 있어서, 제어부는 적분값에 상수(1/Cr)를 곱하여 감쇄 전압을 연산하는 것을 특징으로 하는 리니어 압축기.
- 제3항에 있어서, 제어부는 상수(1/Cr)를 가변하여, 냉력 가변율을 조절 제어하는 것을 특징으로 하는 리니어 압축기.
- 제1항에 있어서, 적분기 회로부는 0V보다 큰 기준전압(Vref)을 입력받아, 기준전압(Vref)을 중심으로 가변하는 적분값을 출력하는 적분부를 구비하는 것을 특징으로 하는 리니어 압축기.
- 제1항에 있어서, 적분부는 전류 감지부로부터의 전압이 입력되는 반전입력단과, 기준전압(Vref)가 입력되는 비반전단을 구비하는 증폭기를 구비하고, 증폭기의 출력 전압을 반전입력단으로 귀환시키는 병렬 연결된 캐패시터와 저항으로 구성된 것을 특징으로 하는 리니어 압축기.
- 제6항에 있어서, 병렬 연결된 캐패시터와 저항에 의해 결정되는 차단 주파수는 전류의 주파수 또는 운전주파수보다 낮게 설정된 것을 특징으로 하는 리니어 압축기.
- 제5항 내지 제7항 중의 어느 한 항에 있어서, 적분기 회로부는 적분부에 선행하여, 전류 감지부로부터의 전류에 대응하는 전압을 증폭하는 전압 증폭부와, 전압 증폭부의 출력 전압에 포함된 직류 오프셋(offset)을 차단하는 커플링부를 구비하고, 커플링부의 출력을 적분부의 반전입력단의 입력으로 인가하는 것을 특징으로 하는 리니어 압축기.
- 제8항에 있어서, 적분기 회로부는 적분부의 출력 전압에 포함된 노이즈를 제거하는 저대역 필터부를 포함하여 구성된 것을 특징으로 하는 리니어 압축기.
- 내부에 압축공간을 포함하는 고정부재와, 고정부재 내부에서 압축공간으로 흡입된 냉매를 압축시키는 가동부재와, 가동부재를 탄성 지지하도록 설치된 적어도 하나 이상의 스프링과, 가동부재와 연결되도록 설치되어 가동부재를 축방향으로 왕복 직선운동시키는 모터를 구비하는 리니어 압축기의 제어 방법에 있어서, 상기 제어 방법은:기설정된 인가 전압을 모터에 인가하는 제1단계와;기설정된 인가 전압의 인가에 의한 전류에 대응하는 제1입력 전압을 생성하는 제2단계와;생성된 제1입력 전압을 적분하여 제1출력 전압을 산정하는 제3단계와;산정된 제1출력 전압을 일정 비율로 감쇄 연산하여 제1감쇄 전압을 생성하는 제4단계와;인가 전압와 제1감쇄 전압의 차이에 대응하는 제1모터 인가 전압을 산정하는 제5단계와;제1모터 인가 전압을 모터에 인가하는 제6단계를 포함하는 것을 특징으로 하는 리니어 압축기의 제어 방법.
- 제10항에 있어서, 상기 제어 방법은 제2 내지 제6단계를 반복적으로 수행하는 것을 특징으로 하는 리니어 압축기의 제어 방법.
- 제10항에 있어서, 제3단계 및 제4단계를 동시에 수행되는 것을 특징으로 하는 리니어 압축기의 제어 방법.
- 제10항에 있어서, 제3단계는 0V보다 큰 기준전압(Vref)을 입력받아, 기준전압(Vref)을 중심으로 가변하는 제1출력 전압을 산정하는 것을 특징으로 하는 리니어 압축기의 제어 방법.
- 제13항에 있어서, 제3단계는 전류의 주파수 또는 운전 주파수보다 낮은 차단 주파수로 적분을 수행하는 것을 특징으로 하는 리니어 압축기의 제어 방법.
- 제10항에 있어서, 일정 비율은 냉력 가변율에 따라 가변 가능한 것을 특징으로 하는 리니어 압축기의 제어 방법.
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CN201180000251.4A CN103069163B (zh) | 2010-02-26 | 2011-02-22 | 线性压缩机 |
US13/133,074 US8550789B2 (en) | 2010-02-26 | 2011-02-22 | Linear compressor |
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KR1020100017940A KR101681325B1 (ko) | 2010-02-26 | 2010-02-26 | 리니어 압축기 |
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KR101190069B1 (ko) * | 2011-05-23 | 2012-10-12 | 엘지전자 주식회사 | 압축기 제어 장치 |
KR101852430B1 (ko) * | 2012-01-30 | 2018-04-26 | 엘지전자 주식회사 | 압축기 제어장치 및 압축기 제어방법 |
KR102115247B1 (ko) * | 2013-12-19 | 2020-05-26 | 엘지전자 주식회사 | 리니어 압축기 제어 장치 및 제어 방법 |
US9518572B2 (en) * | 2014-02-10 | 2016-12-13 | Haier Us Appliance Solutions, Inc. | Linear compressor |
US9506460B2 (en) * | 2014-02-10 | 2016-11-29 | Haier Us Appliance Solutions, Inc. | Linear compressor |
US20150226210A1 (en) * | 2014-02-10 | 2015-08-13 | General Electric Company | Linear compressor |
US9429150B2 (en) * | 2014-02-10 | 2016-08-30 | Haier US Appliances Solutions, Inc. | Linear compressor |
US9145878B1 (en) * | 2014-07-11 | 2015-09-29 | Marvin Ray McKenzie | Oscillating linear compressor |
KR102253892B1 (ko) | 2014-10-31 | 2021-05-20 | 엘지전자 주식회사 | 압축기 제어 장치 및 제어 방법 |
CN105241172B (zh) * | 2015-11-05 | 2017-12-29 | 青岛海尔股份有限公司 | 采用直线压缩机的冰箱控制方法及控制*** |
JP6764751B2 (ja) * | 2016-10-14 | 2020-10-07 | 日立オートモティブシステムズ株式会社 | リニア圧縮機及びこれを搭載した機器 |
CN106940104A (zh) * | 2017-03-24 | 2017-07-11 | 苏州林信源自动化科技有限公司 | 一种高效制冷设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003028073A (ja) * | 2001-07-18 | 2003-01-29 | Toyota Industries Corp | 電動圧縮機の制御方法 |
JP2003293962A (ja) * | 2002-03-26 | 2003-10-15 | Copeland Corp | 燃料ガス圧縮システム |
JP2008196320A (ja) * | 2007-02-08 | 2008-08-28 | Aisin Seiki Co Ltd | リニア圧縮機の制御方法 |
KR20090090248A (ko) * | 2008-02-20 | 2009-08-25 | 엘지전자 주식회사 | 모터 제어 장치 및 이를 이용한 리니어 압축기 |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5782079A (en) * | 1997-02-25 | 1998-07-21 | Industrial Technology Research Institute | Miniature liquid-fueled turbojet engine |
KR100317301B1 (ko) * | 2000-01-21 | 2001-12-22 | 구자홍 | 선형 압축기의 피스톤 위치 제어장치 및 방법 |
US6525497B2 (en) | 2000-05-18 | 2003-02-25 | Lg Electronics Inc. | Phase distortion compensating apparatus and method for reducing torque ripple in 3-phase motor |
JP2002005035A (ja) * | 2000-06-20 | 2002-01-09 | Matsushita Electric Ind Co Ltd | リニアコンプレッサの駆動装置 |
US6537034B2 (en) * | 2000-11-29 | 2003-03-25 | Lg Electronics Inc. | Apparatus and method for controlling operation of linear compressor |
US6623246B2 (en) * | 2001-04-13 | 2003-09-23 | Lg Electronics Inc. | Apparatus and method for controlling operation of linear motor compressor |
JP2003176788A (ja) * | 2001-12-10 | 2003-06-27 | Matsushita Electric Ind Co Ltd | リニアコンプレッサの駆動装置 |
JP2003339188A (ja) * | 2002-05-21 | 2003-11-28 | Matsushita Electric Ind Co Ltd | リニアモータの駆動装置 |
KR100707418B1 (ko) * | 2003-06-05 | 2007-04-13 | 엘지전자 주식회사 | 리니어 압축기의 제어 방법 |
KR100588717B1 (ko) * | 2004-08-30 | 2006-06-12 | 엘지전자 주식회사 | 리니어 압축기 |
JP5002335B2 (ja) | 2007-05-29 | 2012-08-15 | 株式会社東芝 | モータ制御装置,洗濯機及びモータ制御方法 |
KR20100008307A (ko) * | 2008-07-15 | 2010-01-25 | 엘지전자 주식회사 | 리니어 압축기 |
KR101681324B1 (ko) * | 2010-02-24 | 2016-12-13 | 엘지전자 주식회사 | 리니어 압축기 |
-
2010
- 2010-02-26 KR KR1020100017940A patent/KR101681325B1/ko active IP Right Grant
-
2011
- 2011-02-22 WO PCT/KR2011/001124 patent/WO2011105720A2/ko active Application Filing
- 2011-02-22 CN CN201180000251.4A patent/CN103069163B/zh not_active Expired - Fee Related
- 2011-02-22 US US13/133,074 patent/US8550789B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2003028073A (ja) * | 2001-07-18 | 2003-01-29 | Toyota Industries Corp | 電動圧縮機の制御方法 |
JP2003293962A (ja) * | 2002-03-26 | 2003-10-15 | Copeland Corp | 燃料ガス圧縮システム |
JP2008196320A (ja) * | 2007-02-08 | 2008-08-28 | Aisin Seiki Co Ltd | リニア圧縮機の制御方法 |
KR20090090248A (ko) * | 2008-02-20 | 2009-08-25 | 엘지전자 주식회사 | 모터 제어 장치 및 이를 이용한 리니어 압축기 |
Also Published As
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US8550789B2 (en) | 2013-10-08 |
KR20110098360A (ko) | 2011-09-01 |
KR101681325B1 (ko) | 2016-12-13 |
CN103069163B (zh) | 2016-03-30 |
US20120034104A1 (en) | 2012-02-09 |
CN103069163A (zh) | 2013-04-24 |
WO2011105720A3 (ko) | 2012-02-02 |
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