CN105971867A - Detection method and device for fault of compressor - Google Patents
Detection method and device for fault of compressor Download PDFInfo
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- CN105971867A CN105971867A CN201610293210.3A CN201610293210A CN105971867A CN 105971867 A CN105971867 A CN 105971867A CN 201610293210 A CN201610293210 A CN 201610293210A CN 105971867 A CN105971867 A CN 105971867A
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- Prior art keywords
- compressor
- electromotive force
- inverse electromotive
- fault
- rotating speed
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
-
- 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
Abstract
The invention discloses a detection method and device for a fault of a compressor. The detection method comprises steps as follows: the compressor is controlled to run by the aid of a control signal, and first reverse electromotive force of the compressor during running is obtained, wherein the control signal is used for controlling the compressor to run at a first revolving speed; on the basis of the first reverse electromotive force, whether the compressor has the jamming fault or not is judged. With the adoption of the detection method and device, the technical problem that whether inverter compressors have jamming faults cannot be accurately judged in the prior art is solved.
Description
Technical field
The present invention relates to compressor control field, in particular to detection method and the device of a kind of compressor fault.
Background technology
At present, due to the needs of people's daily life, convertible frequency air-conditioner is used by increasing user.But using
During, the stuck fault of frequency-changeable compressor of convertible frequency air-conditioner can be run into, and would generally occur such as when running into this fault
Lower two kinds of situations: one, after death, convertible frequency air-conditioner directly operation can cause bigger electric current by control to frequency-changeable compressor card
Circuit processed, causes IPM blocks current excessive and causes overcurrent protection, in this case, main by being directly judged as after sale
Plate goes wrong, and changes outside frequency conversion machine electric appliance box and cannot solve problem, therefore, will result in after-sales service efficiency low
Under, the wasting of resources；Its two, frequency-changeable compressor card after death, control circuit protection not in time in the case of, bigger
Electric current is also possible to cause the damage of control circuit, it is impossible to pick out fault type, it will make after-sales service more difficult.
Frequency-changeable compressor cannot be accurately judged to for prior art and occur that the problem of stuck fault, the most not yet proposition have
The solution of effect.
Summary of the invention
Embodiments provide detection method and the device of a kind of compressor fault, with at least solve prior art without
Method is accurately judged to frequency-changeable compressor and the technical problem of stuck fault occurs.
An aspect according to embodiments of the present invention, it is provided that the detection method of a kind of compressor fault, this detection method
Including: utilize control signal to control compressor operating, and the first inverse electromotive force when obtaining described compressor operating,
Wherein, described control signal is used for controlling described compressor operating at the first rotating speed；Based on described first inverse electromotive force,
Judge whether described compressor occurs stuck fault.
Further, based on described first inverse electromotive force, it is judged that whether described compressor occurs stuck fault to include:
Obtain second inverse electromotive force corresponding with described first rotating speed；Relatively described first inverse electromotive force is second anti-with described
To electromotive force, obtain comparative result；Judge whether described compressor occurs described stuck fault based on described comparative result.
Further, relatively described first inverse electromotive force includes with described second inverse electromotive force: calculate described first
Inverse electromotive force and the ratio of described second inverse electromotive force；Relatively described ratio and the size of preset value.
Further, judge whether described compressor occurs described stuck fault to include based on described comparative result: work as institute
When stating the comparative result described ratio of instruction less than described preset value, then judge that described compressor occurs described stuck fault；
Otherwise, it is judged that described compressor does not occurs described stuck fault.
Further, after judging that described compressor occurs described stuck fault, described method also includes: will use
In indicating described compressor to occur the instruction information of described stuck fault to show on the display of indoor apparatus of air conditioner, wherein,
Described instruction information at least includes stuck failure code；Maybe indicate described compressor that described stuck fault occurs by being used for
Instruction information sends to terminal.
Further, before utilizing control signal to control compressor operating, described method also includes: in described compression
After machine starts, generate described control signal；Or in described compressor generation overcurrent protection, and after restarting,
Generate described control signal.
Further, the first inverse electromotive force when obtaining described compressor operating includes: gather the three of described compressor
Phase current；Calculate the second rotating speed that described three-phase current is corresponding, and calculate described second rotating speed and inverse electromotive force constant
Product value, using described product value as described first inverse electromotive force, wherein, described first rotating speed and described second rotating speed
Between difference in preset range.
Further, obtain second inverse electromotive force corresponding with described first rotating speed to include: obtained by the first formula
Described second inverse electromotive force e0, described first formula is: e0=ke* ω, and wherein, described ω is described first rotating speed,
Described ke is inverse electromotive force constant.
Another aspect according to embodiments of the present invention, additionally provides the detection device of a kind of compressor fault, and this detection fills
Put and include: acquiring unit, be used for utilizing control signal to control compressor operating, and when obtaining described compressor operating
First inverse electromotive force, wherein, described control signal is used for controlling described compressor operating at the first rotating speed；Judge single
Unit, for based on described first inverse electromotive force, it is judged that whether described compressor occurs stuck fault.
Further, described judging unit includes: acquisition module, for obtaining second corresponding with described first rotating speed
Inverse electromotive force；Comparison module, for relatively described first inverse electromotive force and described second inverse electromotive force, obtains
Comparative result；Based on described comparative result, judge module, for judging whether described compressor occurs described stuck fault.
Further, described comparison module includes: calculating sub module, is used for calculating described first inverse electromotive force and institute
State the ratio of the second inverse electromotive force；Comparison sub-module, for the size of relatively described ratio with preset value.
Further, described judge module includes: first judges submodule, for when described in the instruction of described comparative result
When ratio is less than described preset value, then judge that described compressor occurs described stuck fault；Second judges submodule,
For when described comparative result indicates described ratio more than or equal to described preset value, then judging that described compressor is not sent out
Raw described stuck fault.
Further, described device also includes: the first display unit, for judging that the generation of described compressor is described
After stuck fault, described compressor is indicated to occur the instruction information of described stuck fault to show in air conditioning chamber by being used for
On the display of machine, wherein, described instruction information at least includes stuck failure code；Or second display unit, it is used for
Described compressor is indicated to occur the instruction information of described stuck fault to send to terminal by being used for.
Further, described device also includes: the first generation module, for utilizing control signal to control compressor fortune
Before row, after described compressor start, generate described control signal；Or second generation module, for described
Compressor generation overcurrent protection, and after restarting, generate described control signal.
In embodiments of the present invention, when compressor is in start-up course, utilize control signal to control compressor and be in open loop
When low speed (the first the most above-mentioned rotating speed) runs, by obtaining the first inverse electromotive force during compressor operating, it is judged that
Whether compressor there is stuck fault.By above-described embodiment, due to when compressor is in open loop low cruise, if
There is stuck fault in compressor, then value when inverse electromotive force when compressor is stuck can be significantly lower than properly functioning, because of
Be there is the basis for estimation of stuck fault by this in the inverse electromotive force of compressor, by this basis for estimation as compressor
Judge whether compressor occurs stuck fault accurately, solve prior art and cannot be accurately judged to frequency-changeable compressor
The problem that stuck fault occurs.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this
Bright schematic description and description is used for explaining the present invention, is not intended that inappropriate limitation of the present invention.At accompanying drawing
In:
Fig. 1 is the flow chart of the detection method of a kind of compressor fault according to embodiments of the present invention；
Fig. 2 is the flow chart of the detection method of a kind of optional compressor fault according to embodiments of the present invention；
Fig. 3 is the structural representation of the detection method of a kind of optional compressor fault according to embodiments of the present invention；
Fig. 4 is the schematic diagram of the detection device of a kind of compressor fault according to embodiments of the present invention.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with in the embodiment of the present invention
Accompanying drawing, is clearly and completely described the technical scheme in the embodiment of the present invention, it is clear that described embodiment
It is only the embodiment of a present invention part rather than whole embodiments.Based on the embodiment in the present invention, ability
The every other embodiment that territory those of ordinary skill is obtained under not making creative work premise, all should belong to
The scope of protection of the invention.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " it is etc. for distinguishing similar object, without being used for describing specific order or precedence.Should be appreciated that this
Sample use data can exchange in the appropriate case, in order to embodiments of the invention described herein can with except
Here the order beyond those illustrating or describing is implemented.Additionally, term " includes " and " having " and they
Any deformation, it is intended that cover non-exclusive comprising, such as, contain series of steps or the process of unit, side
Method, system, product or equipment are not necessarily limited to those steps or the unit clearly listed, but can include the clearest
List or for intrinsic other step of these processes, method, product or equipment or unit.
Embodiment 1
According to embodiments of the present invention, it is provided that the embodiment of the detection method of a kind of compressor fault, it should be noted that
Can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing,
And, although show logical order in flow charts, but in some cases, can be suitable be different from herein
Step shown or described by sequence execution.
Fig. 1 is the flow chart of the detection method of a kind of compressor fault according to embodiments of the present invention, as it is shown in figure 1,
The method comprises the steps:
Step S102, utilizes control signal to control compressor operating, and first when obtaining compressor operating is the most electronic
Gesture, wherein, control signal is used for controlling compressor operating at the first rotating speed.
Step S104, based on the first inverse electromotive force, it is judged that whether compressor occurs stuck fault.
Use embodiments of the invention, when compressor is in start-up course, utilize control signal to control compressor and be in out
When ring low speed (the first the most above-mentioned rotating speed) runs, by obtaining the first inverse electromotive force during compressor operating, sentence
Whether disconnected compressor there is stuck fault.By above-described embodiment, due to when compressor is in open loop low cruise,
If there is stuck fault in compressor, then value when inverse electromotive force when compressor is stuck can be significantly lower than properly functioning,
Therefore the inverse electromotive force of compressor is occurred the basis for estimation of stuck fault, by this basis for estimation i.e. as compressor
Can judge whether compressor occurs stuck fault accurately, solve prior art and cannot be accurately judged to frequency conversion compression
The problem that stuck fault occurs in machine.
The first above-mentioned rotating speed can be the fixed rotating speed to compressor input；By the closed loop control of software programming (as
PID controls), the actual speed controlling compressor is stable near fixed rotating speed.
Specifically, when compressor is in start-up course, and control signal control compressor is utilized to be in open loop low cruise
During state, based on the control signal to the fixed rotating speed that compressor inputs, and detect the three-phase electricity of the compressor obtained
Stream, estimates the inverse electromotive force (the first the most above-mentioned inverse electromotive force) obtaining compressor, namely estimates and obtain compressor
Actual inverse electromotive force during operation, and according to the size of this actual inverse electromotive force, it is judged that whether compressor blocks
Dead fault.
In the above embodiment of the present invention, based on the first inverse electromotive force, it is judged that whether compressor occurs stuck fault
Including: obtain second inverse electromotive force corresponding with the first rotating speed；Relatively the first inverse electromotive force and second the most electronic
Gesture, obtains comparative result；Judge whether compressor occurs stuck fault based on comparative result.
Specifically, when compressor is in start-up course, and control signal control compressor is utilized to be in open loop low cruise
During state, estimate the actual inverse electromotive force obtaining compressor, and the actual inverse electromotive force and compression that obtain will be estimated
The set inverse electromotive force (the second the most above-mentioned inverse electromotive force) of machine compares, and obtains comparative result, according to than
The instruction information of relatively result judges whether compressor occurs stuck fault.Wherein, set inverse electromotive force is to turn with fixing
The inverse electromotive force that speed is corresponding.
By above-described embodiment, the actual inverse electromotive force of compressor is compared with set inverse electromotive force, passes through
Comparative result, can judge whether compressor occurs stuck fault, and the program can be realized by software, therefore has
There is implementation simple, the advantage that processing speed is high.
In the above embodiment of the present invention, compare the first inverse electromotive force and the second inverse electromotive force includes: calculate the
One inverse electromotive force and the ratio of the second inverse electromotive force；Relatively ratio and the size of preset value.
Further, judge whether compressor occurs stuck fault to include based on comparative result: when comparative result instruction ratio
When value is less than preset value, then judge that compressor occurs stuck fault；Otherwise, it is judged that compressor does not occurs stuck event
Barrier.
Alternatively, the actual inverse electromotive force (the first the most above-mentioned inverse electromotive force) and compressor that obtain will be estimated
Set inverse electromotive force (the second the most above-mentioned inverse electromotive force) compares, and i.e. can calculate actual inverse electromotive force
The ratio of e1 and set inverse electromotive force e0, when ratio is less than preset value (such as 0.1), and e1 < 0.1*e0, on meeting
When stating relation, i.e. may indicate that actual inverse electromotive force, much smaller than set inverse electromotive force, now judges that compressor is deposited
In stuck fault, otherwise, it is judged that compressor does not occurs stuck fault, control compressor and enter normal operating condition.
By above-described embodiment, use odds ratio compared with method, it is possible to represent that actual inverse electromotive force is with set accurately
Magnitude relationship between inverse electromotive force, such that it is able to based on comparative result, judge whether compressor occurs accurately
Stuck fault.
In the above embodiment of the present invention, after judging that compressor occurs stuck fault, method also includes: will
For indicating compressor to occur the instruction information of stuck fault to show the display at indoor apparatus of air conditioner, wherein, instruction
Information at least includes stuck failure code；Maybe compressor is indicated to occur the instruction information of stuck fault to send to end by being used for
End.
Specifically, after judging that compressor occurs stuck fault, when the indoor set of compressor is provided with communication module
Time (such as WiFi module), can by be used for representing compressor occur the instruction information of stuck fault send to terminal (as
Application A PP of terminal) on, and this instruction information is shown on the display screen of terminal；Or, can will use
The stuck failure code of stuck fault is occurred to show on the display of indoor apparatus of air conditioner in instruction compressor.
By above-described embodiment, compressor is indicated to occur the instruction information of stuck fault to show in air-conditioning unit room by being used for
On the display of machine or on the display screen of terminal, such that it is able to remind user or after-sale service personnel, need to change
Compressor.
In the above embodiment of the present invention, before utilizing control signal to control compressor operating, method also includes:
After compressor start, generate control signal；Or in compressor generation overcurrent protection, and after restarting, raw
Become control signal.
Alternatively, in the case of compressor normally starts, the control signal of compressor input fixed rotating speed (is i.e. gone up
The control signal stated), make compressor be in the state of open loop low cruise, estimate actual inverse electromotive force during this state,
And obtain the set inverse electromotive force corresponding with fixed rotating speed, relatively actual inverse electromotive force and set inverse electromotive force
Size, when comparative result shows actual inverse electromotive force much smaller than set inverse electromotive force, it is judged that compressor occurs
Stuck fault, otherwise, it is judged that compressor does not occurs stuck fault, controls compressor and enters normal operation mode.
Alternatively, in the case of compressor is in normal operation mode, as IPM (the Intelligent Power of compressor
The abbreviation of Module, i.e. SPM) overcurrent protection occurs, and reset automatically compressor time, to compression
The control signal (the most above-mentioned control signal) of machine input fixed rotating speed, makes compressor be in the state of open loop low cruise,
Estimate actual inverse electromotive force during this state, and obtain the set inverse electromotive force corresponding with fixed rotating speed, the most real
Border inverse electromotive force and the size of set inverse electromotive force, when comparative result shows that actual inverse electromotive force is much smaller than set
During inverse electromotive force, it is judged that the compressor stuck fault of generation, otherwise, it is judged that compressor does not occurs stuck fault,
Control compressor and enter normal operation mode.
What above-described embodiment was merely exemplary gives the situation of two kinds of compressor starts, at this it should be noted that above-mentioned
The detection method of compressor fault can apply in the case of any compressor start.
In the above embodiment of the present invention, the first inverse electromotive force when obtaining compressor operating includes: collect and process
The three-phase current of machine；Calculate the second rotating speed that three-phase current is corresponding, and calculate the second rotating speed and inverse electromotive force constant
Product value, using product value as the first inverse electromotive force, wherein, the difference between the first rotating speed and the second rotating speed is at default model
In enclosing.
The second above-mentioned rotating speed can be the actual speed of compressor；By the closed loop control of software programming (as PID is controlled
System), the actual speed controlling compressor is stable near fixed rotating speed (the first the most above-mentioned rotating speed), namely controls real
Border rotating speed is close to fixed rotating speed, and the difference of actual speed and fixed rotating speed is in the least preset range.
Specifically, when compressor is in start-up course, the control signal to compressor input fixed rotating speed, based on soft
The closed loop control of part programming, the actual speed controlling compressor is stable near fixed rotating speed, even if also at compressor
State in open loop low cruise.In this condition, the three-phase current of detection compressor, the reality estimating compressor turns
Speed (the second the most above-mentioned rotating speed), and calculate the product of actual speed and inverse electromotive force constant, the product value obtained is
The actual inverse electromotive force (the first the most above-mentioned inverse electromotive force) of compressor.
In the above embodiment of the present invention, obtain second inverse electromotive force corresponding with the first rotating speed and include: by
One formula obtains the second inverse electromotive force e0, and the first formula is: e0=ke* ω, and wherein, ω is the first rotating speed, and ke is
Inverse electromotive force constant.
The second above-mentioned inverse electromotive force can be set inverse electromotive force, namely initial reverse electromotive force.
According to compressor initial reverse electromotive force e0 and fixed rotating speed ω, the relation of inverse electromotive force constant ke, set
Initial reverse electromotive force e0, the most corresponding first formula.
By above-described embodiment, obtain the set inverse electromotive force corresponding with fixed rotating speed, for judging compressor card
Dead fault provides set parameter, thus based on set parameter, it is judged that whether compressor there is stuck fault.
Below in conjunction with Fig. 2 in detail the above embodiment of the present invention is described in detail.As in figure 2 it is shown, this embodiment can include walking as follows
Rapid:
Step S201, compressor normally starts.
Step S202, controls compressor and is in the state of fixing low cruise, and estimates compressor in this condition
Actual inverse electromotive force e1.
Specifically, the control signal to compressor input fixed rotating speed, make compressor be in the state of fixing low cruise,
Wherein, estimate that actual inverse electromotive force e1 is consistent with the embodiment of above-described embodiment, do not repeat them here.
Step S203, it is judged that whether actual inverse electromotive force e1 and set inverse electromotive force e0 meets relational expression e1 < a*e0.
<, comprise e1 and be equal to during a*e0 when actual inverse electromotive force e1 and set inverse electromotive force e0 meets relational expression e1
The situation of 0, performs step S204；When actual inverse electromotive force e1 and set inverse electromotive force e0 is unsatisfactory for relational expression
< during a*e0, performing step S205, wherein, a is above-mentioned preset value to e1, can be constant, such as 0.1.
Step S204, it is judged that compressor occurs stuck fault.
Step S205, compressor enters normal mode of operation.
Specifically, when judging that compressor does not occurs stuck fault, compressor enters normal mode of operation.
Step S206, it is judged that whether compressor occurs overcurrent protection.
When judging compressor generation overcurrent protection, then perform step S207；When judging that compressor did not occurred stream to protect
When protecting, then return and perform step S205.
Step S207, restarts compressor, and controls compressor and be in the state of fixing low cruise, and estimation is at this
The actual inverse electromotive force e1 of the compressor under state.
After performing step S207, perform step S203.
In the above-described embodiments, when compressor normally starts, control compressor and be in the shape body of fixing low cruise,
And compare the actual inverse electromotive force of estimation and set inverse electromotive force set in advance, based on comparative result, it is judged that pressure
Whether contracting machine there is the stuck fault of compressor, if judging, compressor occurs stuck fault, it is determined that need to change compression
Machine, if judging there is not stuck fault in compressor, then control compressor and enter normal mode of operation；And work as compressor
IPM module overcurrent protection occurs, reset automatically compressor time, again judge compressor whether occur stuck therefore
Barrier.
Below in conjunction with Fig. 3 in detail the above embodiment of the present invention is described in detail.As it is shown on figure 3, include six switching devices (K1,
K2, K3, K4, K5, K6), a DC source DC, detects resistance R and compressor M.Six derailing switches
Part (such as IGBT) composition IPM module, provides for compressor and controls electric current, control the running speed of compressor.Figure
Exemplary in 3 give a detection resistance R, by detection resistance, the three-phase current of detection input to compressor
(i.e. U phase current IU, V phase current IVAnd W phase current IW), can be evaluated whether to obtain reality based on sample rate current
Inverse electromotive force e1, using the actual inverse electromotive force e1 obtained and set inverse electromotive force e0 as two of comparator
Input parameter, by comparator, exports comparative result, may determine that whether compressor blocks based on comparative result
Dead fault.
By above-described embodiment, when compressor is in the state of open loop low cruise, compressor is inputted fixed rotating speed
The control signal of ω, and detect compressor three-phase current, estimate compressor actual inverse electromotive force e1, and with fixing
The set counter electromotive force e0 of the compressor that rotating speed is corresponding relatively judges whether compressor exists stuck situation.
In above-described embodiment, detect compressor three-phase current, and method based on software estimation, the reality of estimation compressor
Border rotating speed rather than use position sensor technology to obtain the rotating speed of compressor, decreases in embodiment required hard
Part device；It addition, in compressor properly functioning control logic, the inverse electromotive force of detection compressor turns for calculating
The rotating speed of son and magnetic field position thereof, input equal small current driving to the switching device in the power model of compressor
During signal, counter electromotive force when compressor is stuck can be made according to this characteristic significantly lower than value time properly functioning
For the basis for estimation that compressor is stuck.
It should be noted that in the case of being in any state at compressor and needing to start, can be by above-mentioned reality
Execute the scheme of example, correctly judge whether compressor occurs stuck fault, thus carry for user and after-sale service personnel
For convenient.
Embodiment 2
Fig. 4 is the schematic diagram of the detection device of a kind of compressor fault according to embodiments of the present invention, as shown in Figure 4,
This device may include that acquiring unit 20, judging unit 40.
Wherein, acquiring unit 20, it is used for utilizing control signal to control compressor operating, and when obtaining compressor operating
First inverse electromotive force, wherein, control signal is used for controlling compressor operating at the first rotating speed.
Judging unit 40, for based on the first inverse electromotive force, it is judged that whether compressor occurs stuck fault.
Use embodiments of the invention, when compressor is in start-up course, utilize control signal to control compressor and be in out
When ring low speed (the first the most above-mentioned rotating speed) runs, by obtaining the first inverse electromotive force during compressor operating, sentence
Whether disconnected compressor there is stuck fault.By above-described embodiment, due to when compressor is in open loop low cruise,
If there is stuck fault in compressor, then value when inverse electromotive force when compressor is stuck can be significantly lower than properly functioning,
Therefore the inverse electromotive force of compressor is occurred the basis for estimation of stuck fault, by this basis for estimation i.e. as compressor
Can judge whether compressor occurs stuck fault accurately, solve prior art and cannot be accurately judged to frequency conversion compression
The problem that stuck fault occurs in machine.
The first above-mentioned rotating speed can be the fixed rotating speed to compressor input；By the closed loop control of software programming (as
PID controls), the actual speed controlling compressor is stable near fixed rotating speed.
Specifically, when compressor is in start-up course, and control signal control compressor is utilized to be in open loop low cruise
During state, based on the control signal to the fixed rotating speed that compressor inputs, and detect the three-phase electricity of the compressor obtained
Stream, estimates the inverse electromotive force (the first the most above-mentioned inverse electromotive force) obtaining compressor, namely estimates and obtain compressor
Actual inverse electromotive force during operation, and according to the size of this actual inverse electromotive force, it is judged that whether compressor blocks
Dead fault.
In the above embodiment of the present invention, it is judged that unit includes: acquisition module, corresponding with the first rotating speed for obtaining
The second inverse electromotive force；Comparison module, is used for comparing the first inverse electromotive force and the second inverse electromotive force, is compared
Relatively result；Based on comparative result, judge module, for judging whether compressor occurs stuck fault.
Specifically, when compressor is in start-up course, and control signal control compressor is utilized to be in open loop low cruise
During state, estimate the actual inverse electromotive force obtaining compressor, and the actual inverse electromotive force and compression that obtain will be estimated
The set inverse electromotive force (the second the most above-mentioned inverse electromotive force) of machine compares, and obtains comparative result, according to than
The instruction information of relatively result judges whether compressor occurs stuck fault.Wherein, set inverse electromotive force is to turn with fixing
The inverse electromotive force that speed is corresponding.
By above-described embodiment, the actual inverse electromotive force of compressor is compared with set inverse electromotive force, passes through
Comparative result, can judge whether compressor occurs stuck fault, and the program can be realized by software, therefore has
There is implementation simple, the advantage that processing speed is high.
In the above embodiment of the present invention, comparison module includes: calculating sub module, the most electronic for calculating first
Gesture and the ratio of the second inverse electromotive force；Comparison sub-module, for comparing the size of ratio and preset value.
Further, it is judged that module includes: first judges submodule, for when comparative result instruction ratio is less than presetting
During value, then judge that compressor occurs stuck fault；Second judges submodule, for indicating ratio big when comparative result
When equal to preset value, it is judged that compressor does not occurs stuck fault.
Alternatively, the actual inverse electromotive force (the first the most above-mentioned inverse electromotive force) and compressor that obtain will be estimated
Set inverse electromotive force (the second the most above-mentioned inverse electromotive force) compares, and i.e. can calculate actual inverse electromotive force
The ratio of e1 and set inverse electromotive force e0, when ratio is less than preset value (such as 0.1), and e1 < 0.1*e0, on meeting
When stating relation, i.e. may indicate that actual inverse electromotive force, much smaller than set inverse electromotive force, now judges that compressor is deposited
In stuck fault, otherwise, it is judged that compressor does not occurs stuck fault, control compressor and enter normal operating condition.
By above-described embodiment, use odds ratio compared with method, it is possible to represent that actual inverse electromotive force is with set accurately
Magnitude relationship between inverse electromotive force, such that it is able to based on comparative result, judge whether compressor occurs accurately
Stuck fault.
In the above embodiment of the present invention, said apparatus can also include: the first display unit, for judging
After compressor occurs stuck fault, compressor is indicated to occur the instruction information of stuck fault to show in air conditioning chamber by being used for
On the display of interior machine, wherein, instruction information at least includes stuck failure code；Or second display unit, for will
For indicating compressor to occur the instruction information of stuck fault to send to terminal.
Specifically, after judging that compressor occurs stuck fault, when the indoor set of compressor is provided with communication module
Time (such as WiFi module), can by be used for representing compressor occur the instruction information of stuck fault send to terminal (as
Application A PP of terminal) on, and this instruction information is shown on the display screen of terminal；Or, can will use
The stuck failure code of stuck fault is occurred to show on the display of indoor apparatus of air conditioner in instruction compressor.
By above-described embodiment, compressor is indicated to occur the instruction information of stuck fault to show in air-conditioning unit room by being used for
On the display of machine or on the display screen of terminal, such that it is able to remind user or after-sale service personnel, need to change
Compressor.
In the above embodiment of the present invention, said apparatus also includes: the first generation module, for utilizing control letter
Number control before compressor operating, after compressor start, generate control signal；Or second generation module, it is used for
In compressor generation overcurrent protection, and after restarting, generate control signal.
Alternatively, in the case of compressor normally starts, the control signal of compressor input fixed rotating speed (is i.e. gone up
The control signal stated), make compressor be in the state of open loop low cruise, estimate actual inverse electromotive force during this state,
And obtain the set inverse electromotive force corresponding with fixed rotating speed, relatively actual inverse electromotive force and set inverse electromotive force
Size, when comparative result shows actual inverse electromotive force much smaller than set inverse electromotive force, it is judged that compressor occurs
Stuck fault, otherwise, it is judged that compressor does not occurs stuck fault, controls compressor and enters normal operation mode.
Alternatively, in the case of compressor is in normal operation mode, as IPM (the Intelligent Power of compressor
The abbreviation of Module, i.e. SPM) overcurrent protection occurs, and reset automatically compressor time, to compression
The control signal (the most above-mentioned control signal) of machine input fixed rotating speed, makes compressor be in the state of open loop low cruise,
Estimate actual inverse electromotive force during this state, and obtain the set inverse electromotive force corresponding with fixed rotating speed, the most real
Border inverse electromotive force and the size of set inverse electromotive force, when comparative result shows that actual inverse electromotive force is much smaller than set
During inverse electromotive force, it is judged that the compressor stuck fault of generation, otherwise, it is judged that compressor does not occurs stuck fault,
Control compressor and enter normal operation mode.
What above-described embodiment was merely exemplary gives the situation of two kinds of compressor starts, at this it should be noted that above-mentioned
The detection method of compressor fault can apply in the case of any compressor start.
The invention described above embodiment sequence number, just to describing, does not represent the quality of embodiment.
In the above embodiment of the present invention, the description to each embodiment all emphasizes particularly on different fields, and does not has in certain embodiment
The part described in detail, may refer to the associated description of other embodiments.
In several embodiments provided herein, it should be understood that disclosed technology contents, can be passed through other
Mode realize.Wherein, device embodiment described above is only schematically, the division of the most described unit,
Can be that a kind of logic function divides, actual can have other dividing mode, the most multiple unit or assembly when realizing
Can in conjunction with or be desirably integrated into another system, or some features can be ignored, or does not performs.Another point, institute
The coupling each other shown or discuss or direct-coupling or communication connection can be by some interfaces, unit or mould
The INDIRECT COUPLING of block or communication connection, can be being electrical or other form.
The described unit illustrated as separating component can be or may not be physically separate, shows as unit
The parts shown can be or may not be physical location, i.e. may be located at a place, or can also be distributed to
On multiple unit.Some or all of unit therein can be selected according to the actual needs to realize the present embodiment scheme
Purpose.
It addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, it is also possible to
It is that unit is individually physically present, it is also possible to two or more unit are integrated in a unit.Above-mentioned integrated
Unit both can realize to use the form of hardware, it would however also be possible to employ the form of SFU software functional unit realizes.
If described integrated unit realizes and as independent production marketing or use using the form of SFU software functional unit
Time, can be stored in a computer read/write memory medium.Based on such understanding, technical scheme
Completely or partially can producing with software of the part that the most in other words prior art contributed or this technical scheme
The form of product embodies, and this computer software product is stored in a storage medium, including some instructions in order to make
Obtain a computer equipment (can be personal computer, server or the network equipment etc.) and perform each enforcement of the present invention
All or part of step of method described in example.And aforesaid storage medium includes: USB flash disk, read only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), portable hard drive,
The various medium that can store program code such as magnetic disc or CD.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For Yuan, under the premise without departing from the principles of the invention, it is also possible to make some improvements and modifications, these improve and profit
Decorations also should be regarded as protection scope of the present invention.
Claims (14)
1. the detection method of a compressor fault, it is characterised in that including:
Control signal is utilized to control compressor operating, and the first inverse electromotive force when obtaining described compressor operating,
Wherein, described control signal is used for controlling described compressor operating at the first rotating speed；
Based on described first inverse electromotive force, it is judged that whether described compressor occurs stuck fault.
Detection method the most according to claim 1, it is characterised in that based on described first inverse electromotive force, it is judged that
Whether described compressor occurs stuck fault to include:
Obtain second inverse electromotive force corresponding with described first rotating speed；
Relatively described first inverse electromotive force and described second inverse electromotive force, obtain comparative result；
Judge whether described compressor occurs described stuck fault based on described comparative result.
Detection method the most according to claim 2, it is characterised in that relatively described first inverse electromotive force is with described
Second inverse electromotive force includes:
Calculate the ratio of described first inverse electromotive force and described second inverse electromotive force；
Relatively described ratio and the size of preset value.
Detection method the most according to claim 3, it is characterised in that judge described compression based on described comparative result
Whether machine occurs described stuck fault to include:
When described comparative result indicates described ratio less than described preset value, then judge that described compressor occurs
Described stuck fault；
Otherwise, it is judged that described compressor does not occurs described stuck fault.
Detection method the most according to claim 4, it is characterised in that judging that described compressor occurs described card
After dead fault, described method also includes:
Described compressor is indicated to occur the instruction information of described stuck fault to show showing at indoor apparatus of air conditioner by being used for
Showing on device, wherein, described instruction information at least includes stuck failure code；Or
Described compressor is indicated to occur the instruction information of described stuck fault to send to terminal by being used for.
Detection method the most according to claim 1, it is characterised in that control compressor operating utilizing control signal
Before, described method also includes:
After described compressor start, generate described control signal；Or
In described compressor generation overcurrent protection, and after restarting, generate described control signal.
Detection method the most according to claim 1, it is characterised in that first when obtaining described compressor operating is anti-
Include to electromotive force:
Gather the three-phase current of described compressor；
Calculate the second rotating speed that described three-phase current is corresponding, and calculate described second rotating speed and inverse electromotive force constant
Product value, using described product value as described first inverse electromotive force,
Wherein, the difference between described first rotating speed and described second rotating speed is in preset range.
Detection method the most according to claim 2, it is characterised in that obtain second corresponding with described first rotating speed
Inverse electromotive force includes:
Described second inverse electromotive force e0 is obtained by the first formula,
Described first formula is: e0=ke* ω,
Wherein, described ω is described first rotating speed, and described ke is inverse electromotive force constant.
9. the detection device of a compressor fault, it is characterised in that including:
Acquiring unit, is used for utilizing control signal to control compressor operating, and when obtaining described compressor operating
First inverse electromotive force, wherein, described control signal is used for controlling described compressor operating at the first rotating speed；
Judging unit, for based on described first inverse electromotive force, it is judged that whether described compressor occurs stuck event
Barrier.
Detection device the most according to claim 9, it is characterised in that described judging unit includes:
Acquisition module, for obtaining second inverse electromotive force corresponding with described first rotating speed；
Comparison module, for relatively described first inverse electromotive force and described second inverse electromotive force, is compared
Result；
Based on described comparative result, judge module, for judging whether described compressor occurs described stuck fault.
11. detection devices according to claim 10, it is characterised in that described comparison module includes:
Calculating sub module, for calculating the ratio of described first inverse electromotive force and described second inverse electromotive force；
Comparison sub-module, for the size of relatively described ratio with preset value.
12. detection devices according to claim 11, it is characterised in that described judge module includes:
First judges submodule, is used for when described comparative result indicates described ratio less than described preset value, then
Judge that described compressor occurs described stuck fault；
Second judges submodule, is used for when described comparative result indicates described ratio more than or equal to described preset value,
Then judge that described compressor does not occurs described stuck fault.
13. detection devices according to claim 12, it is characterised in that described device also includes:
First display unit, for, after judging that described compressor occurs described stuck fault, being used for referring to
Show that described compressor occurs the instruction information of described stuck fault to show on the display of indoor apparatus of air conditioner, wherein,
Described instruction information at least includes stuck failure code；Or
Second display unit, for indicating described compressor to occur the instruction information of described stuck fault to send out by being used for
Deliver to terminal.
14. detection devices according to claim 9, it is characterised in that described device also includes:
First generation module, for, before utilizing control signal to control compressor operating, opening at described compressor
After Dong, generate described control signal；Or
Second generation module, in described compressor generation overcurrent protection, and after restarting, generates institute
State control signal.
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| CN201610293210.3A CN105971867B (en) | 2016-05-04 | 2016-05-04 | The detection method and device of compressor fault |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696628A (en) * | 2018-12-04 | 2019-04-30 | 奥克斯空调股份有限公司 | Fault detection tooling and fault detection method for compressor of air conditioner |
| CN113587359A (en) * | 2021-07-23 | 2021-11-02 | 珠海格力电器股份有限公司 | Control method and device for valve cut-off protection, controller and air conditioner |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY122977A (en) * | 1995-03-14 | 2006-05-31 | Panasonic Corp | Refrigerating apparatus, and refrigerator control and brushless motor starter used in same |
| KR101176457B1 (en) * | 2006-12-05 | 2012-08-30 | 삼성전자주식회사 | Air Conditioner and Control Method thereof |
| DE112011102832A5 (en) * | 2010-08-27 | 2013-06-13 | Isatech Gmbh | Method for driving a single-phase BLDC small motor |
| JP2013256926A (en) * | 2012-06-14 | 2013-12-26 | Saginomiya Seisakusho Inc | Drainage pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109696628A (en) * | 2018-12-04 | 2019-04-30 | 奥克斯空调股份有限公司 | Fault detection tooling and fault detection method for compressor of air conditioner |
| CN109696628B (en) * | 2018-12-04 | 2022-09-30 | 奥克斯空调股份有限公司 | Fault detection tool and fault detection method for air conditioner compressor |
| CN113587359A (en) * | 2021-07-23 | 2021-11-02 | 珠海格力电器股份有限公司 | Control method and device for valve cut-off protection, controller and air conditioner |
| CN113587359B (en) * | 2021-07-23 | 2022-06-07 | 珠海格力电器股份有限公司 | Control method and device for valve cut-off protection, controller and air conditioner |
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