CN1611867A - Operation controldevice for reciprocating compressor and method thereof - Google Patents
Operation controldevice for reciprocating compressor and method thereof Download PDFInfo
- Publication number
- CN1611867A CN1611867A CN 200310106848 CN200310106848A CN1611867A CN 1611867 A CN1611867 A CN 1611867A CN 200310106848 CN200310106848 CN 200310106848 CN 200310106848 A CN200310106848 A CN 200310106848A CN 1611867 A CN1611867 A CN 1611867A
- Authority
- CN
- China
- Prior art keywords
- tdc
- piston
- double
- load
- compressor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention refers to kind of operation control device of reciprocating compressor and its method. The invention utilizes the piston position detecting transducer to infer and judge the TDC to eliminate the length of stroke estimation deviation caused by the deviation of electric machine parameter and nonlinearity factor to improve the operation efficiency of the compressor. The control device of the invention includes burden detecting device detected the burden of the compressor, piston position detecting transducer. The given space is passed through the time detecting device in which the passed time of the piston detected by the piston position detecting transducer is cost; the TDC of the TDC estimation device is inferred and judged according to the time exported by the time detecting device while the given space is passing through and the burden exported by burden detecting device; compare the extrapolated value exported by the TDC estimation device with the corresponding difference signal exported by comparer after the TDC command value is exported; according to the difference signal exported by the comparer the voltage cut over the compressor is changed to control the control device of the TDC.
Description
Technical field
The present invention relates to a kind of operation controller and method (DRIVINGCONTROL APPARATUS AND METHOD FOR RECIPROCATINGCOMPRESSOR) of reciprocating compressor, be particularly related to a kind of utilization and infer TDC by the piston position detecting sensor that counter electromotive force detects piston position, infer deviation with the stroke (stroke) that deviation and the nonlinear factor of eliminating by the parameter of electric machine (parameter) causes, improve the operation controller and the method for past double-lift compressor of the running efficiency of compressor.
Background technology
Generally, be that piston is done linear reciprocating motion in cylinder interior toward double-lift compressor (Reciprocating Compressor) working method, suck, compress and discharge cold media gas.Motion mode according to driven plunger is divided into Reciprocatory (Reciprocal) mode and linear pattern (Lmear) mode toward the double-lift compressor.
Reciprocatory (Reciprocal) mode is to connect bent axle (crankshaft) on electric rotating machine, in conjunction with piston, the revolving force of electric rotating machine is converted to the mode of straight reciprocating motion on bent axle.In contrast, linear pattern (Linear) mode is directly to connect piston on the rotor of linear electric motors (linear motor), the mode that piston is moved reciprocatingly with the rectilinear motion of motor.
The present invention relates to adopt the past double-lift compressor of linear pattern (Linear) mode.
The past double-lift compressor of linear pattern (Linear) mode does not adopt aforesaid handle to rotatablely move and is converted to straight-line bent axle, thereby has reduced friction loss, and its compression efficiency is also than general compressor height.
When above-mentioned past double-lift compressor is used for refrigerator or air conditioner, can conversion be input to voltage (voltage) toward the double-lift compressor, thereby can change compression ratio (compressionratio), finally can control freezing efficiency (freezing capacity) toward the double-lift compressor.
Fig. 1 is the structure line map of the operation controller of general past double-lift compressor.Operation controller toward the double-lift compressor comprises as shown in the figure: detect the current sensing means 4 that is linked into the current of electric on the motor; Detection is linked into the voltage check device 3 of the voltage on the motor; Infer the stroke estimation device 5 of stroke according to above-mentioned detected current of electric and electric moter voltage and the parameter of electric machine; More above-mentioned stroke estimation value and stroke command value are also exported the comparison means 1 of corresponding difference signal; According to described difference signal, change the control device 2 of the Control of Voltage stroke that is linked into motor.The action of the operation controller of the existing past double-lift compressor of forming thus is as follows:
At first current sensing means 4 detects the current of electric that is linked on the motor, and voltage check device 3 detects the electric moter voltage that is linked on the motor.
At this moment, stroke estimation device 5 is used mathematical expression to above-mentioned current of electric and electric moter voltage and electricity and parameter cover, calculates the stroke estimation value, then the stroke estimation value is sent to comparison means 1.
Above-mentioned mathematical expression is:
Alphabetical implication in the mathematical expression:
R: resistance (resistance)
L: induction coefficient (inductance)
α: counter electromotive force (counter electromotive force)
After comparison means 1 more above-mentioned stroke estimation value and the stroke command value, corresponding difference signal is sent on the control device 2; Control device 2 changes the voltage that is linked into motor and controls stroke.
That is, as shown in Figure 2, when the stroke estimation value reduces the access voltage of motor during greater than the stroke command value; Access voltage when stroke estimation value expanded motor during less than the stroke command value.
Above-mentioned past double-lift compressor is to utilize parameter of electric machine α, resistance R, and reactance L infers stroke, and controls stroke according to the stroke estimation value.
But,, thereby can cause the running efficiency of compressor to reduce because the deviation of parameter of electric machine α and the stroke that nonlinear factor is inferred can produce error.
Summary of the invention
In order to solve the problems of the technologies described above, the purpose of this invention is to provide a kind of operation controller and method toward the double-lift compressor, it utilizes by the piston position detecting sensor of counter electromotive force detection piston position and infers TDC, with the stroke estimation deviation that deviation and the nonlinear factor of eliminating by the parameter of electric machine causes, improve the running efficiency of compressor.
To achieve these goals, the present invention comprises toward the operation controller of double-lift compressor: the load detection device that detects compressor load; Detect the piston position detecting sensor of piston position; According to above-mentioned piston position detecting sensor, detect between the given zone of piston and pass through time detection device through institute's spended time between given zone; According to time of exporting by time detection device between above-mentioned given zone and the TDC estimating device of inferring TDC by the load of load detection device output; Relatively by the comparison means of exporting corresponding difference signal after the TDC presumed value of above-mentioned TDC estimating device output and the TDC command value; Difference signal according to above-mentioned comparison means output changes the voltage that is linked into compressor, thus the control device of control TDC.
To achieve these goals, the present invention comprises toward the method for controlling of operation of double-lift compressor: by detecting the process that counter electromotive force detects piston position; Detect the process of above-mentioned piston through institute's spended time between given zone; Detect the load of compressor, and with the method for testing calculate with the corresponding weighted value of above-mentioned load after infer TDC process; Above-mentioned TDC presumed value and TDC command value relatively after, increase or reduce to be linked into the process of the voltage of compressor according to its comparative result.
Aforesaid the present invention has following effect toward the operation controller and the method for double-lift compressor:
Utilization is inferred TDC by the piston position detecting sensor that counter electromotive force detects piston position, with the stroke estimation deviation that deviation and the nonlinear factor of eliminating by the parameter of electric machine causes, improves the running efficiency of compressor.
Description of drawings
Fig. 1 is the structure line map of the operation controller of general past double-lift compressor;
Fig. 2 is general workflow diagram toward double-lift compressor operation control method;
Fig. 3 is the structure line map of the present invention toward the operation controller of double-lift compressor;
Fig. 4 is the structure diagram of piston among Fig. 3 (piston) position-detection sensor (sensor);
Fig. 5 is the workflow diagram of the present invention toward double-lift compressor operation control method;
Fig. 6 detects the illustration figure of piston through spended time between given zone among Fig. 3;
Fig. 7 be among Fig. 3 between given zone by the graph of a relation between time and TDC.
The critical piece description of reference numerals
100: load detection device 200: the piston position detecting sensor
300: pass through time detection device 400:TDC estimating device between given zone
500: comparison means
The specific embodiment
Below, present invention will be described in detail with reference to the accompanying toward the operation controller of double-lift compressor and the effect and the effect of method.
Fig. 3 is the structure line map of the present invention toward the operation controller of double-lift compressor.
As shown in Figure 3, the present invention comprises toward the operation controller of double-lift compressor: the load detection device 100 that detects compressor L-Comp load; Detect the piston position detecting sensor 200 of piston position according to counter electromotive force; Detect piston through passing through time detection device 300 between the given zone of institute's spended time (Δ t) between given zone according to above-mentioned piston position detecting sensor 200; According to time Δ t that exports by time detection device 300 between above-mentioned given zone and the TDC estimating device 400 of inferring TDC by the load of load detection device 100 outputs; Relatively by the comparison means 500 of exporting corresponding difference signal after the TDC presumed value of above-mentioned TDC estimating device 400 outputs and the TDC command value; Difference signal according to above-mentioned comparison means 500 outputs changes the voltage that is linked into compressor (L-Comp), thus the control device 600 of control TDC.
As shown in Figure 4, above-mentioned piston position detecting sensor 200 structures are: on doing/the connection magnet that keeps at a certain distance away on the piston that moves both vertically down, pipe fitting is set around the magnet, twines the counter electromotive force coil at the outer peripheral face of pipe fitting.The counter electromotive force coil comprises end-coil and the following end-coil that twines in the opposite direction, makes it can detect the counter electromotive force that the magnet action is produced.
Fig. 5 is the workflow diagram of the present invention toward double-lift compressor operation control method.
As shown in Figure 5, the method for controlling of operation toward the double-lift compressor comprises: by detecting the process (SP1) that counter electromotive force detects piston position; Detect the process (SP2) of above-mentioned piston through institute's spended time (Δ t) between given zone; Detect the load of compressor L-Comp, and with the method for testing calculate with the corresponding weighted value of above-mentioned load after infer TDC process (SP3, SP4); Above-mentioned TDC presumed value and TDC command value relatively after, strengthen or reduce to be linked into the process (SP5～SP7) of the voltage of compressor L-Comp according to its comparative result.
TDC is defined as follows among the present invention: the position that is positioned at dump valve side top centre with piston is as benchmark, and the distance definition from this benchmark to piston the position of bottom dead-centre is TDC.
At first detect the load of compressor L-Comp by load detection device 100, detection method has following several: the absolute value detection load of utilizing stroke and electric current phasic difference; Perhaps utilize the temperature detection load of suction inlet and outlet; Perhaps utilize the ambient temperature detection load.
Piston position detecting sensor 200 detects position of piston by counter electromotive force, and is specific as follows: the coil two ends produce just (+) voltage or negative (-) voltage when magnet is positioned at end-coil; The coil two ends produce negative (-) voltage or (+) voltage when magnet is positioned at end-coil.
Detect between piston process given zone according to piston position detecting sensor 200 by time detection device 300 and send on the TDC estimating device 400 behind the spended time Δ t of institute this moment.
Illustrate as follows.Piston is institute's spended time Δ t between given zone by the tdc position that becomes benchmark to the time detecting that distance spent between the bottom dead-centre as shown in Figure 6.
Can detect the TDC value of institute's spended time Δ t between corresponding given zone according to load with the method for experiment.Be specially when load one timing, spended time Δ t of institute and TDC value are one-to-one relationship between given zone; Even the spended time Δ t of institute is identical between given zone when load changes, the TDC value is also different.
TDC estimating device 400 is according to inferring TDC by the time Δ t of time detection device 300 outputs and the load of load detection device 100 outputs.Specifically calculate according to following mathematical expression:
TDC presumed value=(Δ t-x) * weighted value+y
In the mathematical expression, Δ t is for passing through the time when between the given zone of secondary piston; X passes through the time between the given zone of benchmark piston; Y is the tdc position of benchmark piston.
The weighted value of above-mentioned mathematical expression changes according to load is different, and the more little weighted value of load increases as shown in Figure 7, and the big more weighted value of loading reduces.
Comparison means 500 compares by sending to control device 600 after the corresponding difference signal of output after the TDC presumed value of above-mentioned TDC estimating device 400 outputs and the TDC command value.Control device 600 changes the voltage that is linked into compressor L-comp according to the difference signal of above-mentioned comparison means 500 outputs, the control stroke.
That is, when above-mentioned TDC presumed value during greater than the TDC command value, control device 600 strengthens the voltage that is linked into compressor L-comp; Reduce to be linked into the voltage of compressor L-comp less than TDC command value timed unit 600 when the TDC presumed value.
Further specify as followsly, as shown in Figure 5, at first detect position of piston (SP1), detect piston through the time of the passing through Δ t (SP2) between given zone.
Detect the load (SP3) of compressor L-Comp then, detection method has following several: the absolute value detection load of utilizing stroke and electric current phasic difference; Perhaps utilize the temperature detection load of suction inlet and outlet; Perhaps utilize the ambient temperature detection load.
Method is by experiment calculated according to inferring TDC (SP4) after the weighted value of loading then.
Compare TDC presumed value and TDC command value then.Increase or reduce to be linked into the voltage of compressor L-Comp according to comparative result.Promptly strengthen the voltage that is linked into compressor L-Comp during greater than the TDC command value when the TDC presumed value; When the TDC presumed value reduces to be linked into the voltage of compressor L-Comp during less than the TDC command value.
Though the front is described the present invention in detail, persons of ordinary skill in the art may appreciate that under the prerequisite of the spirit and scope of the invention of in not breaking away from right request scope, determining, can make change miscellaneous and modification.
Claims (15)
1. the operation controller toward the double-lift compressor is characterized in that, comprising:
Detect the load detection device of compressor load;
Detect the piston position detecting sensor of piston position;
According to above-mentioned piston position detecting sensor, detect between the given zone of piston and pass through time detection device through institute's spended time between given zone;
According to time of exporting by time detection device between above-mentioned given zone and the TDC estimating device of inferring TDC by the load of load detection device output;
Relatively by the comparison means of exporting corresponding difference signal after the TDC presumed value of above-mentioned TDC estimating device output and the TDC command value; According to the difference signal of above-mentioned comparison means output, change the voltage that is linked into compressor, thus the control device that TDC is controlled.
2. the operation controller toward the double-lift compressor according to claim 1 is characterized in that:
Load detection device utilizes the absolute value detection load of stroke and electric current phasic difference.
3. the operation controller toward the double-lift compressor according to claim 1 is characterized in that:
Load detection device utilizes the temperature detection load of suction inlet and outlet.
4. the operation controller toward the double-lift compressor according to claim 1 is characterized in that:
Load detection device utilizes the ambient temperature detection load.
5. the operation controller toward the double-lift compressor according to claim 1 is characterized in that:
Piston position detecting sensor sensor construction is: on doing/the connection magnet that keeps at a certain distance away on the piston that moves both vertically down, pipe fitting is set around the magnet, twines the counter electromotive force coil at the outer peripheral face of pipe fitting; The counter electromotive force coil comprises end-coil and the following end-coil that twines in the opposite direction, makes it possible to detect the counter electromotive force that the magnet action is produced.
6. the operation controller toward the double-lift compressor according to claim 5 is characterized in that:
Constituting of counter electromotive force coil: the coil two ends produce positive voltage or negative voltage when magnet is positioned at end-coil; The coil two ends produce negative voltage or positive voltage when magnet is positioned at end-coil.
7. the operation controller toward the double-lift compressor according to claim 5 is characterized in that:
The lower end that the piston position detecting sensor is characterized as piston is connected by attaching parts with the lower end of magnet, and moves along identical direction.
8. the operation controller toward the double-lift compressor according to claim 5 is characterized in that:
Last end-coil becomes symmetrical structure with the lower end coil design, and counter electromotive force becomes zero when making magnet between last end-coil and following end-coil.
9. the operation controller toward the double-lift compressor according to claim 1 is characterized in that:
Between given zone by time detection device detect piston by from ad-hoc location TDC to passing through the time of being spent the bottom dead-centre.
10. the operation controller toward the double-lift compressor according to claim 1 is characterized in that:
Infer TDC by following mathematical expression:
TDC presumed value=(Δ t-x) * weighted value+y
In the mathematical expression, Δ t is for passing through the time when between the given zone of secondary piston; X passes through the time between the given zone of benchmark piston; Y is the tdc position of benchmark piston.
11. the operation controller toward the double-lift compressor according to claim 10 is characterized in that:
Weighted value can change according to load.
12. the operation controller toward the double-lift compressor according to claim 10 is characterized in that:
Load hour weighted value increases; Loading, weighted value reduces when big.
13. the method for controlling of operation toward the double-lift compressor is characterized in that, comprising:
By detecting the process that counter electromotive force detects piston position;
Detect the process of above-mentioned piston through institute's spended time between given zone;
Detect the load of compressor, and with the method for testing calculate with the corresponding weighted value of above-mentioned load after infer TDC process;
After above-mentioned TDC presumed value and TDC command value compare, strengthen or reduce the process of the voltage that is linked into compressor according to its comparative result.
14. the method for controlling of operation toward the double-lift compressor according to claim 13 is characterized in that:
After TDC presumed value and TDC command value were made comparisons, the process that increases or reduce to be linked into the voltage of compressor according to comparative result was: when the TDC presumed value strengthens the voltage that is linked into compressor during greater than the TDC command value; When the TDC presumed value reduces to be linked into the voltage of compressor during less than the TDC command value.
15. the method for controlling of operation toward the double-lift compressor according to claim 13 is characterized in that:
Detect the load of compressor, comprise with the process of inferring TDC after the weighted value of experimental calculation according to load again and utilize following mathematical expression to infer the stage of TDC:
TDC presumed value=(Δ t-x) * weighted value+y
In the mathematical expression, Δ t is for passing through the time when between the given zone of secondary piston; X passes through the time between the given zone of benchmark piston; Y is the tdc position of benchmark piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106848 CN1611867A (en) | 2003-10-30 | 2003-10-30 | Operation controldevice for reciprocating compressor and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200310106848 CN1611867A (en) | 2003-10-30 | 2003-10-30 | Operation controldevice for reciprocating compressor and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1611867A true CN1611867A (en) | 2005-05-04 |
Family
ID=34757819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200310106848 Pending CN1611867A (en) | 2003-10-30 | 2003-10-30 | Operation controldevice for reciprocating compressor and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1611867A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427457B (en) * | 2006-04-20 | 2011-05-11 | Lg电子株式会社 | Driving control apparatus and method for linear compressor |
-
2003
- 2003-10-30 CN CN 200310106848 patent/CN1611867A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101427457B (en) * | 2006-04-20 | 2011-05-11 | Lg电子株式会社 | Driving control apparatus and method for linear compressor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1196862C (en) | Control mechanism and method for reciprocating compressor | |
| CN1219975C (en) | Stroke control mechanism and method for reciprocating compressor | |
| CN101054970A (en) | Driving controlling apparatus for linear compressor and method thereof | |
| CN1194174C (en) | Equipment and method for detecting stroke vibration of linear compressor | |
| US8197220B2 (en) | Driving control apparatus and method for linear compressor | |
| US8100668B2 (en) | Apparatus and method for controlling operation of a linear compressor using a detected inflection point | |
| CN1573107A (en) | Apparatus and method for controlling operation of a reciprocating compressor | |
| KR100608690B1 (en) | Driving control apparatus and method for reciprocating compressor | |
| US8109736B2 (en) | Apparatus and method for controlling operation of a linear compressor using a phase difference inflection point detecting unit | |
| CN1621688A (en) | Apparatus and method for controlling operation of reciprocating compressor | |
| CN1313733C (en) | Apparatus and method for controlling operation of linear compressor | |
| CN1589371A (en) | Linear motor controller | |
| CN1800644A (en) | Apparatus and method for controlling operation of compressor | |
| KR20070095518A (en) | Apparatus for controlling of reciprocating compressor operation and method thereof | |
| KR100533041B1 (en) | Driving control apparatus and method for reciprocating compressor | |
| CN1242169C (en) | Drive controller and control method for reciprocating compressor | |
| CN102575657A (en) | Linear compressor | |
| CN1611867A (en) | Operation controldevice for reciprocating compressor and method thereof | |
| CN1959113A (en) | Apparatus for controlling operation of reciprocating compressor and method thereof | |
| CN1704590A (en) | Apparatus for controlling operation of compressor and method therefor | |
| CN1267644C (en) | Operation control device and method of reciprocating motion type compressor | |
| KR100517934B1 (en) | Driving control apparatus and method for reciprocating compressor | |
| KR100575691B1 (en) | Driving control apparatus and method for reciprocating compressor | |
| CN1707105A (en) | Apparatus and method for controlling operation of reciprocating compressor | |
| KR100608658B1 (en) | Driving control apparatus and method for reciprocating compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |