CN105971867B - The detection method and device of compressor fault - Google Patents
The detection method and device of compressor fault Download PDFInfo
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- CN105971867B CN105971867B CN201610293210.3A CN201610293210A CN105971867B CN 105971867 B CN105971867 B CN 105971867B CN 201610293210 A CN201610293210 A CN 201610293210A CN 105971867 B CN105971867 B CN 105971867B
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- compressor
- electromotive force
- inverse electromotive
- stuck failure
- rotating speed
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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
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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
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention discloses the detection method and device of a kind of compressor fault.Wherein, which includes：The first inverse electromotive force when controlling compressor operating using control signal, and obtaining compressor operating, wherein, control signal is used to control compressor operating in the first rotating speed；Based on the first inverse electromotive force, judge whether compressor occurs stuck failure.By the present invention, the technical problem that stuck failure occurs in frequency-changeable compressor can not be accurately judged to by solving the prior art.
Description
Technical field
The present invention relates to compressor control field, in particular to the detection method and device of a kind of compressor fault.
Background technology
At present, since the needs of people's daily life, convertible frequency air-conditioner are used by more and more users.But what is used
During, the following two kinds would generally occur when can run into the stuck failure of frequency-changeable compressor of convertible frequency air-conditioner, and run into this failure
Situation：First, after frequency-changeable compressor is stuck, convertible frequency air-conditioner, which is directly run, can cause larger electric current to cause by control circuit
IPM blocks currents are excessive and cause overcurrent protection, in this case, will directly be judged as that mainboard goes wrong after sale, and replace
The outer machine electric appliance box of frequency conversion can not simultaneously solve the problems, such as, therefore, will cause after-sales service inefficiency, the wasting of resources；Second, frequency conversion pressure
After contracting machine is stuck, in the case of control circuit protection not in time, larger electric current is also possible to cause the damage of control circuit,
Fault type can not be identified, it will make after-sales service more difficult.
Frequency-changeable compressor can not be accurately judged to for the prior art and the problem of stuck failure occurs, not yet propose have at present
The solution of effect.
The content of the invention
An embodiment of the present invention provides the detection method and device of a kind of compressor fault, with least solve the prior art without
Method is accurately judged to the technical problem that stuck failure occurs in frequency-changeable compressor.
One side according to embodiments of the present invention, there is provided a kind of detection method of compressor fault, the detection method
Including：The first inverse electromotive force when controlling compressor operating using control signal, and obtaining the compressor operating, wherein,
The control signal is used to control the compressor operating in the first rotating speed；Based on first inverse electromotive force, described in judgement
Whether compressor occurs stuck failure.
Further, based on first inverse electromotive force, judge whether the compressor occurs stuck failure and include：Obtain
Take the second inverse electromotive force corresponding with first rotating speed；Compare first inverse electromotive force and described second reversely it is electronic
Gesture, obtains comparative result；Judge whether the compressor occurs the stuck failure based on the comparative result.
Further, first inverse electromotive force includes with second inverse electromotive force：Calculate described first
The ratio of inverse electromotive force and second inverse electromotive force；Compare the size of the ratio and preset value.
Further, judge whether the compressor occurs the stuck failure and include based on the comparative result：Work as institute
When stating comparative result and indicating that the ratio is less than the preset value, then the compressor generation stuck failure is judged；It is no
Then, judge that the stuck failure does not occur for the compressor.
Further, after judging that the stuck failure occurs for the compressor, the method further includes：It will be used for
Indicate that the configured information of the compressor generation stuck failure is shown on the display of indoor apparatus of air conditioner, wherein, it is described
Configured information includes at least stuck failure code；Or by for indicating that the configured information of the stuck failure occurs for the compressor
Send to terminal.
Further, before using control signal control compressor operating, the method further includes：In the compressor
After startup, the control signal is generated；Or overcurrent protection occurs in the compressor, and after restarting, described in generation
Control signal.
Further, the first inverse electromotive force when obtaining the compressor operating includes：Gather the three of the compressor
Phase current；Corresponding second rotating speed of the three-phase current is calculated, and calculates the product of second rotating speed and inverse electromotive force constant
Value, using the product value as first inverse electromotive force, wherein, the difference between first rotating speed and second rotating speed
Within a preset range.
Further, obtaining the second inverse electromotive force corresponding with first rotating speed includes：Obtained by the first formula
The second inverse electromotive force e0, first formula are：E0=ke* ω, wherein, the ω is first rotating speed, described
Ke is inverse electromotive force constant.
Another aspect according to embodiments of the present invention, additionally provides a kind of detection device of compressor fault, detection dress
Put including：Acquiring unit, for using control signal control compressor operating, and first when obtaining the compressor operating is anti-
To electromotive force, wherein, the control signal is used to control the compressor operating in the first rotating speed；Judging unit, for based on
First inverse electromotive force, judges whether the compressor occurs stuck failure.
Further, the judging unit includes：Acquisition module, it is anti-for obtaining corresponding with first rotating speed second
To electromotive force；Comparison module, for first inverse electromotive force and second inverse electromotive force, obtains comparing knot
Fruit；Judgment module, for judging whether the compressor occurs the stuck failure based on the comparative result.
Further, the comparison module includes：Calculating sub module, for calculate first inverse electromotive force with it is described
The ratio of second inverse electromotive force；Comparison sub-module, the size for the ratio and preset value.
Further, the judgment module includes：First judging submodule, for indicating the ratio when the comparative result
When value is less than the preset value, then judge that the stuck failure occurs for the compressor；Second judgment submodule, for working as
When stating comparative result and indicating that the ratio is more than or equal to the preset value, then it is described stuck former to judge that the compressor does not occur
Barrier.
Further, described device further includes：First display unit, for judging the compressor generation card
After dead failure, by for indicating that the configured information of the stuck failure occurs for the compressor including in the aobvious of indoor apparatus of air conditioner
Show on device, wherein, the configured information includes at least stuck failure code；Or second display unit, for that will be used to indicate institute
The configured information for stating the compressor generation stuck failure is sent to terminal.
Further, described device further includes：First generation module, for utilizing control signal control compressor operating
Before, after the compressor start, the control signal is generated；Or second generation module, for being sent out in the compressor
Raw overcurrent protection, and after restarting, generate the control signal.
In embodiments of the present invention, when compressor is in start-up course, open loop is in using control signal control compressor
When low speed (the first i.e. above-mentioned rotating speed) is run, the first inverse electromotive force during by obtaining compressor operating, judges compressor
Whether stuck failure is occurred.By above-described embodiment, due to when compressor is in the operation of open loop low speed, if compressor card
Dead failure, then inverse electromotive force when compressor is stuck can be significantly lower than value during normal operation, therefore by the reverse of compressor
The basis for estimation of stuck failure occurs as compressor for electromotive force, can accurately judge that compressor is by the basis for estimation
It is no that stuck failure occurs, solve the problems, such as that the prior art can not be accurately judged to frequency-changeable compressor and stuck failure occurs.
Brief description of the drawings
Attached drawing described herein is used for providing a further understanding of the present invention, forms the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of flow chart of the detection method of compressor fault according to embodiments of the present invention；
Fig. 2 is a kind of flow chart of the detection method of optional compressor fault according to embodiments of the present invention；
Fig. 3 is a kind of structure diagram of the detection method of optional compressor fault according to embodiments of the present invention；
Fig. 4 is a kind of schematic diagram of the detection device of compressor fault according to embodiments of the present invention.
Embodiment
In order to make those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Attached drawing, is clearly and completely described the technical solution in the embodiment of the present invention, it is clear that described embodiment is only
The embodiment of a part of the invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's all other embodiments obtained without making creative work, should all belong to the model that the present invention protects
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned attached drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so use
Data can exchange in the appropriate case, so as to the embodiment of the present invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Cover it is non-exclusive include, be not necessarily limited to for example, containing the process of series of steps or unit, method, system, product or equipment
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
Embodiment 1
According to embodiments of the present invention, there is provided a kind of embodiment of the detection method of compressor fault, it is necessary to explanation,
Step shown in the flowchart of the accompanying drawings can perform in the computer system of such as a group of computer-executable instructions, and
And although showing logical order in flow charts, in some cases, can be with different from order execution institute herein
The step of showing or describing.
Fig. 1 is a kind of flow chart of the detection method of compressor fault according to embodiments of the present invention, as shown in Figure 1, should
Method includes the following steps：
Step S102, compressor operating is controlled using control signal, and first when obtaining compressor operating is reversely electronic
Gesture, wherein, control signal is used to control compressor operating in the first rotating speed.
Step S104, based on the first inverse electromotive force, judges whether compressor occurs stuck failure.
Embodiment using the present invention, when compressor is in start-up course, is in using control signal control compressor and opened
When ring low speed (the first i.e. above-mentioned rotating speed) is run, the first inverse electromotive force during by obtaining compressor operating, judges to compress
Whether machine occurs stuck failure.By above-described embodiment, due to when compressor is in the operation of open loop low speed, if compressor occurs
Stuck failure, then inverse electromotive force when compressor is stuck can be significantly lower than value during normal operation, therefore by the anti-of compressor
The basis for estimation of stuck failure occurs as compressor to electromotive force, compressor can accurately be judged by the basis for estimation
Stuck failure whether occurs, solves the problems, such as that the prior art can not be accurately judged to frequency-changeable compressor and stuck failure occurs.
The first above-mentioned rotating speed can be the fixed rotating speed to compressor input；By the closed-loop control of software programming (such as
PID control), the actual speed stabilization of compressor is controlled near fixed rotating speed.
Specifically, when compressor is in start-up course, and be in open loop low speed using control signal control compressor and run
During state, based on the control signal of the fixed rotating speed inputted to compressor, and the three-phase current of obtained compressor is detected, in advance
Reality when estimating to obtain the inverse electromotive force (the first i.e. above-mentioned inverse electromotive force) of compressor, namely estimating to obtain compressor operating
Border inverse electromotive force, and according to the size of the actual inverse electromotive force, judge whether compressor occurs stuck failure.
In the above embodiment of the present invention, based on the first inverse electromotive force, judge whether compressor occurs stuck failure
Including：Obtain the second inverse electromotive force corresponding with the first rotating speed；Compare the first inverse electromotive force and the second inverse electromotive force, obtain
To comparative result；Judge whether compressor occurs stuck failure based on comparative result.
Specifically, when compressor is in start-up course, and be in open loop low speed using control signal control compressor and run
During state, estimate to obtain the actual inverse electromotive force of compressor, and by the actual inverse electromotive force and compressor estimated
Set inverse electromotive force (the second i.e. above-mentioned inverse electromotive force) is compared, and comparative result is obtained, according to the finger of comparative result
Show that information judges whether compressor occurs stuck failure.Wherein, set inverse electromotive force is reversely electricity corresponding with fixed rotating speed
Kinetic potential.
By above-described embodiment, by the actual inverse electromotive force of compressor compared with set inverse electromotive force, pass through
Comparative result, you can judge whether compressor occurs stuck failure, the program can be achieved by software, therefore with realization
The advantages of mode is simple, and processing speed is high.
In the above embodiment of the present invention, comparing the first inverse electromotive force and the second inverse electromotive force includes：Calculate the
The ratio of one inverse electromotive force and the second inverse electromotive force；Compare the size of ratio and preset value.
Further, judge whether compressor occurs stuck failure and include based on comparative result：When comparative result indicates ratio
When value is less than preset value, then judge that stuck failure occurs for compressor；Otherwise, judge that stuck failure does not occur for compressor.
Alternatively, by the actual inverse electromotive force estimated (the first i.e. above-mentioned inverse electromotive force) and compressor both
Determine inverse electromotive force (the second i.e. above-mentioned inverse electromotive force) to be compared, you can with calculate actual inverse electromotive force e1 with it is set
The ratio of inverse electromotive force e0, when ratio is less than preset value (such as 0.1), e1<0.1*e0, when meeting above-mentioned relation, you can with
Show that actual inverse electromotive force is much smaller than set inverse electromotive force, judge that compressor there are stuck failure, otherwise, judges at this time
It has compressor and stuck failure does not occur, control compressor enters normal operating condition.
By above-described embodiment, the method compared using ratio, can accurately represent actual inverse electromotive force with it is set
Magnitude relationship between inverse electromotive force, so as to which based on comparative result, it is stuck accurately to judge whether compressor occurs
Failure.
In the above embodiment of the present invention, after judging that stuck failure occurs for compressor, method further includes：It will use
The configured information that stuck failure occurs in instruction compressor is shown on the display of indoor apparatus of air conditioner, wherein, configured information is extremely
Include stuck failure code less；Or by for indicating that the configured information of the stuck failure of compressor generation is sent to terminal.
Specifically, after judging that stuck failure occurs for compressor, when the indoor unit of compressor is provided with communication module
, can be by for representing that the configured information of the stuck failure of compressor generation is sent to terminal (such as terminal when (such as WiFi module)
Application APP) on, and the configured information is included on the display screen of terminal；Alternatively, it will can be used to indicate that compressor is sent out
The stuck failure code of raw stuck failure is shown on the display of indoor apparatus of air conditioner.
By above-described embodiment, by for indicating that the configured information of stuck failure occurs for compressor including in air-conditioning unit room
On the display of machine or on the display screen of terminal, so as to remind user or after-sale service personnel, it is necessary to replace compression
Machine.
In the above embodiment of the present invention, before using control signal control compressor operating, method further includes：
After compressor start, control signal is generated；Or overcurrent protection occurs in compressor, and after restarting, generation control letter
Number.
Alternatively, it is (i.e. above-mentioned to the control signal of compressor input fixed rotating speed in the case where compressor normally starts
Control signal), make compressor be in open loop low speed operation state, estimate the actual inverse electromotive force during state, and obtain
The size of set inverse electromotive force corresponding with fixed rotating speed, actual inverse electromotive force and set inverse electromotive force is taken, when
When comparative result shows that actual inverse electromotive force is much smaller than set inverse electromotive force, judge that stuck failure occurs for compressor, it is no
Then, judge that stuck failure does not occur for compressor, control compressor enters normal operation mode.
Alternatively, in the case where compressor is in normal operation mode, as the IPM (Intelligent of compressor
The abbreviation of Power Module, i.e. intelligent power module) there is overcurrent protection, and reset automatically compressor when, to compression
Machine inputs the control signal (i.e. above-mentioned control signal) of fixed rotating speed, compressor is in the state of open loop low speed operation, in advance
Estimate the actual inverse electromotive force during state, and obtain set inverse electromotive force corresponding with fixed rotating speed, it is relatively actual more reverse
The size of electromotive force and set inverse electromotive force, when comparative result shows that actual inverse electromotive force is much smaller than set inverse electromotive force
When, judge that stuck failure occurs for compressor, otherwise, judge that stuck failure does not occur for compressor, control compressor enters just
Regular operation mode.
The merely exemplary situation for giving two kinds of compressor starts of above-described embodiment, it should be noted that above-mentioned
In the case of the detection method of compressor fault can be applied to any compressor start.
In the above embodiment of the present invention, the first inverse electromotive force when obtaining compressor operating includes：Collection compression
The three-phase current of machine；Corresponding second rotating speed of three-phase current is calculated, and calculates the product value of the second rotating speed and inverse electromotive force constant,
Using product value as the first inverse electromotive force, wherein, the difference between the first rotating speed and the second rotating speed is within a preset range.
The second above-mentioned rotating speed can be the actual speed of compressor；By the closed-loop control of software programming, (such as PID is controlled
System), the actual speed stabilization of compressor is controlled near fixed rotating speed (the first i.e. above-mentioned rotating speed), namely control actual speed
Close to fixed rotating speed, the difference of actual speed and fixed rotating speed is in the preset range of very little.
Specifically, when compressor is in start-up course, to the control signal of compressor input fixed rotating speed, based on software
The closed-loop control of programming, controls the actual speed stabilization of compressor near fixed rotating speed, even if also compressor is in open loop
The state of low speed operation.In this condition, the three-phase current of compressor is detected, the actual speed for estimating compressor is (i.e. above-mentioned
Second rotating speed), and the product of actual speed and inverse electromotive force constant is calculated, obtained product value is the actual reverse of compressor
Electromotive force (the first i.e. above-mentioned inverse electromotive force).
In the above embodiment of the present invention, obtaining the second inverse electromotive force corresponding with the first rotating speed includes：Pass through
One formula obtains the second inverse electromotive force e0, and the first formula is：E0=ke* ω, wherein, ω is the first rotating speed, and ke is reversely electricity
Kinetic potential constant.
The second above-mentioned inverse electromotive force can be set inverse electromotive force, namely initial reverse electromotive force.
According to the relation of compressor initial reverse electromotive force e0 and fixed rotating speed ω, inverse electromotive force constant ke, setting is just
Beginning inverse electromotive force e0, i.e., corresponding first formula.
By above-described embodiment, set inverse electromotive force corresponding with fixed rotating speed is obtained, to judge compressor card
Dead failure provides set parameter, so as to be based on set parameter, judges whether compressor occurs stuck failure.
The above embodiment of the present invention is described in detail with reference to Fig. 2.As shown in Fig. 2, the embodiment may include steps of：
Step S201, compressor normally start.
Step S202, control compressor are in the state of fixed low speed operation, and estimate compressor in this condition
Actual inverse electromotive force e1.
Specifically, to the control signal of compressor input fixed rotating speed, compressor is made to be in the state of fixed low speed operation,
Wherein, estimate that actual inverse electromotive force e1 is consistent with the embodiment of above-described embodiment, details are not described herein.
Step S203, judges whether actual inverse electromotive force e1 and set inverse electromotive force e0 meets relational expression e1<a*e0.
When actual inverse electromotive force e1 and set inverse electromotive force e0 meet relational expression e1<During a*e0, comprising e1 equal to 0
Situation, performs step S204；When actual inverse electromotive force e1 and set inverse electromotive force e0 are unsatisfactory for relational expression e1<During a*e0,
Step S205 is performed, wherein, a is above-mentioned preset value, can be constant, such as 0.1.
Step S204, judges that stuck failure occurs for compressor.
Step S205, compressor enter normal mode of operation.
Specifically, when judging that stuck failure does not occur for compressor, compressor enters normal mode of operation.
Step S206, judges whether compressor occurs overcurrent protection.
When judging compressor generation overcurrent protection, then step S207 is performed；When judge compressor do not occur overcurrent protect
During shield, then return and perform step S205.
Step S207, restarts compressor, and controls compressor to be in the state of fixed low speed operation, estimates in the shape
The actual inverse electromotive force e1 of compressor under state.
After performing step S207, step S203 is performed.
In the above-described embodiments, when compressor normally starts, control compressor is in the shape body of fixed low speed operation, and
Compare the actual inverse electromotive force of estimation and set inverse electromotive force set in advance, based on comparative result, judge that compressor is
The no generation stuck failure of compressor, if judging, stuck failure occurs for compressor, it is determined that compressor is needed replacing, if judging
Stuck failure does not occur for compressor, then controls compressor to enter normal mode of operation；And when overcurrent occur in the IPM modules of compressor
Protection, reset automatically compressor when, judge whether compressor occurs stuck failure again.
The above embodiment of the present invention is described in detail with reference to Fig. 3.As shown in figure 3, including six switching devices (K1, K2,
K3, K4, K5, K6), a DC power supply DC, detection resistance R and compressor M.Six switching devices (such as IGBT) form IPM
Module, provides control electric current for compressor, controls the running speed of compressor.It is exemplary in Fig. 3 to give a detection electricity
R is hindered, passes through detection resistance, three-phase current (the i.e. U phase currents I of detection input to compressorU, V phase currents IVAnd W phase currents
IW), it can be evaluated whether to obtain actual inverse electromotive force e1 based on sample rate current, by obtained actual inverse electromotive force e1 and set anti-
Two input parameters to electromotive force e0 as comparator, by comparator, are exported comparative result, can be sentenced based on comparative result
Break and whether compressor occurs stuck failure.
By above-described embodiment, when compressor is in the state of open loop low speed operation, fixed rotating speed is inputted to compressor
The control signal of ω, and detect compressor three-phase current, estimates the actual inverse electromotive force e1 of compressor, and with fixed rotating speed pair
The set counter electromotive force e0 for the compressor answered relatively judges that compressor whether there is stuck situation.
In above-described embodiment, compressor three-phase current, and the method estimated based on software are detected, estimates the reality of compressor
Rotating speed, rather than the rotating speed using position sensor technology acquisition compressor, reduce hardware device needed for embodiment；
In addition, in compressor normal operation control logic, detect compressor inverse electromotive force be used for the rotating speed for calculating rotor and its
Magnetic field position, when the switching device in the power module to compressor inputs equal small current driving signal, compressor card
Counter electromotive force when dead can be significantly lower than value during normal operation, can according to the judgement stuck as compressor of this characteristic according to
According to.
It should be noted that in the case of being in any state in compressor and needing startup, above-mentioned reality can be passed through
The scheme of example is applied, correctly judges whether compressor occurs stuck failure, so as to be user and after-sale service personnel provider
Just.
Embodiment 2
Fig. 4 is a kind of schematic diagram of the detection device of compressor fault according to embodiments of the present invention, as shown in figure 4, should
Device can include：Acquiring unit 20, judging unit 40.
Wherein, acquiring unit 20, for using control signal control compressor operating, and the when obtaining compressor operating
One inverse electromotive force, wherein, control signal is used to control compressor operating in the first rotating speed.
Judging unit 40, for based on the first inverse electromotive force, judging whether compressor occurs stuck failure.
Embodiment using the present invention, when compressor is in start-up course, is in using control signal control compressor and opened
When ring low speed (the first i.e. above-mentioned rotating speed) is run, the first inverse electromotive force during by obtaining compressor operating, judges to compress
Whether machine occurs stuck failure.By above-described embodiment, due to when compressor is in the operation of open loop low speed, if compressor occurs
Stuck failure, then inverse electromotive force when compressor is stuck can be significantly lower than value during normal operation, therefore by the anti-of compressor
The basis for estimation of stuck failure occurs as compressor to electromotive force, compressor can accurately be judged by the basis for estimation
Stuck failure whether occurs, solves the problems, such as that the prior art can not be accurately judged to frequency-changeable compressor and stuck failure occurs.
The first above-mentioned rotating speed can be the fixed rotating speed to compressor input；By the closed-loop control of software programming (such as
PID control), the actual speed stabilization of compressor is controlled near fixed rotating speed.
Specifically, when compressor is in start-up course, and be in open loop low speed using control signal control compressor and run
During state, based on the control signal of the fixed rotating speed inputted to compressor, and the three-phase current of obtained compressor is detected, in advance
Reality when estimating to obtain the inverse electromotive force (the first i.e. above-mentioned inverse electromotive force) of compressor, namely estimating to obtain compressor operating
Border inverse electromotive force, and according to the size of the actual inverse electromotive force, judge whether compressor occurs stuck failure.
In the above embodiment of the present invention, judging unit includes：Acquisition module, it is corresponding with the first rotating speed for obtaining
Second inverse electromotive force；Comparison module, for comparing the first inverse electromotive force and the second inverse electromotive force, obtains comparative result；
Judgment module, for judging whether compressor occurs stuck failure based on comparative result.
Specifically, when compressor is in start-up course, and be in open loop low speed using control signal control compressor and run
During state, estimate to obtain the actual inverse electromotive force of compressor, and by the actual inverse electromotive force and compressor estimated
Set inverse electromotive force (the second i.e. above-mentioned inverse electromotive force) is compared, and comparative result is obtained, according to the finger of comparative result
Show that information judges whether compressor occurs stuck failure.Wherein, set inverse electromotive force is reversely electricity corresponding with fixed rotating speed
Kinetic potential.
By above-described embodiment, by the actual inverse electromotive force of compressor compared with set inverse electromotive force, pass through
Comparative result, you can judge whether compressor occurs stuck failure, the program can be achieved by software, therefore with realization
The advantages of mode is simple, and processing speed is high.
In the above embodiment of the present invention, comparison module includes：Calculating sub module, for calculating the first inverse electromotive force
With the ratio of the second inverse electromotive force；Comparison sub-module, for comparing the size of ratio and preset value.
Further, judgment module includes：First judging submodule, for being less than preset value when comparative result instruction ratio
When, then judge that stuck failure occurs for compressor；Second judgment submodule, for being more than or equal in advance when comparative result instruction ratio
If during value, judge that stuck failure does not occur for compressor.
Alternatively, by the actual inverse electromotive force estimated (the first i.e. above-mentioned inverse electromotive force) and compressor both
Determine inverse electromotive force (the second i.e. above-mentioned inverse electromotive force) to be compared, you can with calculate actual inverse electromotive force e1 with it is set
The ratio of inverse electromotive force e0, when ratio is less than preset value (such as 0.1), e1<0.1*e0, when meeting above-mentioned relation, you can with
Show that actual inverse electromotive force is much smaller than set inverse electromotive force, judge that compressor there are stuck failure, otherwise, judges at this time
It has compressor and stuck failure does not occur, control compressor enters normal operating condition.
By above-described embodiment, the method compared using ratio, can accurately represent actual inverse electromotive force with it is set
Magnitude relationship between inverse electromotive force, so as to which based on comparative result, it is stuck accurately to judge whether compressor occurs
Failure.
In the above embodiment of the present invention, above device can also include：First display unit, for judging to press
After stuck failure occurs for contracting machine, by for indicating that the configured information of stuck failure occurs for compressor including in indoor apparatus of air conditioner
On display, wherein, configured information includes at least stuck failure code；Or second display unit, for instruction compression will to be used for
The configured information that stuck failure occurs for machine is sent to terminal.
Specifically, after judging that stuck failure occurs for compressor, when the indoor unit of compressor is provided with communication module
, can be by for representing that the configured information of the stuck failure of compressor generation is sent to terminal (such as terminal when (such as WiFi module)
Application APP) on, and the configured information is included on the display screen of terminal；Alternatively, it will can be used to indicate that compressor is sent out
The stuck failure code of raw stuck failure is shown on the display of indoor apparatus of air conditioner.
By above-described embodiment, by for indicating that the configured information of stuck failure occurs for compressor including in air-conditioning unit room
On the display of machine or on the display screen of terminal, so as to remind user or after-sale service personnel, it is necessary to replace compression
Machine.
In the above embodiment of the present invention, above device further includes：First generation module, for utilizing control signal
Before controlling compressor operating, after compressor start, control signal is generated；Or second generation module, in compressor
Generation overcurrent protection, and after restarting, generate control signal.
Alternatively, it is (i.e. above-mentioned to the control signal of compressor input fixed rotating speed in the case where compressor normally starts
Control signal), make compressor be in open loop low speed operation state, estimate the actual inverse electromotive force during state, and obtain
The size of set inverse electromotive force corresponding with fixed rotating speed, actual inverse electromotive force and set inverse electromotive force is taken, when
When comparative result shows that actual inverse electromotive force is much smaller than set inverse electromotive force, judge that stuck failure occurs for compressor, it is no
Then, judge that stuck failure does not occur for compressor, control compressor enters normal operation mode.
Alternatively, in the case where compressor is in normal operation mode, as the IPM (Intelligent of compressor
The abbreviation of Power Module, i.e. intelligent power module) there is overcurrent protection, and reset automatically compressor when, to compression
Machine inputs the control signal (i.e. above-mentioned control signal) of fixed rotating speed, compressor is in the state of open loop low speed operation, in advance
Estimate the actual inverse electromotive force during state, and obtain set inverse electromotive force corresponding with fixed rotating speed, it is relatively actual more reverse
The size of electromotive force and set inverse electromotive force, when comparative result shows that actual inverse electromotive force is much smaller than set inverse electromotive force
When, judge that stuck failure occurs for compressor, otherwise, judge that stuck failure does not occur for compressor, control compressor enters just
Regular operation mode.
The merely exemplary situation for giving two kinds of compressor starts of above-described embodiment, it should be noted that above-mentioned
In the case of the detection method of compressor fault can be applied to any compressor start.
The embodiments of the present invention are for illustration only, do 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 have in some embodiment
The part of detailed description, may refer to the associated description of other embodiment.
In several embodiments provided herein, it should be understood that disclosed technology contents, can pass through others
Mode is realized.Wherein, device embodiment described above is only schematical, such as the division of the unit, Ke Yiwei
A kind of division of logic function, can there is an other dividing mode when actually realizing, for example, multiple units or component can combine or
Person is desirably integrated into another system, or some features can be ignored, or does not perform.Another, shown or discussed is mutual
Between coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some interfaces, unit or module
Connect, can be electrical or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical location, you can with positioned at a place, or can also be distributed to multiple
On unit.Some or all of unit therein can be selected to realize the purpose of this embodiment scheme according to the actual needs.
In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units integrate in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, can also be realized in the form of SFU software functional unit.
If the integrated unit is realized in the form of SFU software functional unit and is used as independent production marketing or use
When, it can be stored in a computer read/write memory medium.Based on such understanding, technical scheme is substantially
The part to contribute in other words to the prior art or all or part of the technical solution can be in the form of software products
Embody, which is stored in a storage medium, including some instructions are used so that a computer
Equipment (can be personal computer, server or network equipment etc.) perform each embodiment the method for the present invention whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (12)
- A kind of 1. detection method of compressor fault, it is characterised in that including：The first inverse electromotive force when controlling compressor operating using control signal, and obtaining the compressor operating, wherein, institute Control signal is stated to be used to control the compressor operating in the first rotating speed；Based on first inverse electromotive force, judge whether the compressor occurs stuck failure；Based on first inverse electromotive force, judge whether the compressor occurs stuck failure and include：Obtain and described first Corresponding second inverse electromotive force of rotating speed；Compare first inverse electromotive force and second inverse electromotive force, compared As a result；Judge whether the compressor occurs the stuck failure based on the comparative result.
- 2. detection method according to claim 1, it is characterised in that first inverse electromotive force and described second Inverse electromotive force includes：Calculate the ratio of first inverse electromotive force and second inverse electromotive force；Compare the size of the ratio and preset value.
- 3. detection method according to claim 2, it is characterised in that judge that the compressor is based on the comparative result The no generation stuck failure includes：When the comparative result indicates that the ratio is less than the preset value, then it is described stuck to judge that the compressor occurs Failure；Otherwise, judge that the stuck failure does not occur for the compressor.
- 4. detection method according to claim 3, it is characterised in that judging the compressor generation stuck event After barrier, the method further includes：It will include display in indoor apparatus of air conditioner for indicating that the configured information of the stuck failure occurs for the compressor, Wherein, the configured information includes at least stuck failure code；OrBy for indicating that the configured information of the compressor generation stuck failure is sent to terminal.
- 5. detection method according to claim 1, it is characterised in that using control signal control compressor operating it Before, the method further includes：After the compressor start, the control signal is generated；OrOvercurrent protection occurs in the compressor, and after restarting, generates the control signal.
- 6. detection method according to claim 1, it is characterised in that first when obtaining the compressor operating is reversely electric Kinetic potential includes：Gather the three-phase current of the compressor；Corresponding second rotating speed of the three-phase current is calculated, and calculates the product value of second rotating speed and inverse electromotive force constant, Using the product value as first inverse electromotive force,Wherein, the difference between first rotating speed and second rotating speed is within a preset range.
- 7. detection method according to claim 1, it is characterised in that it is reverse to obtain corresponding with first rotating speed second Electromotive force includes：The second inverse electromotive force e0 is obtained by the first formula,First formula is：E0=ke* ω,Wherein, the ω is first rotating speed, and the ke is inverse electromotive force constant.
- A kind of 8. detection device of compressor fault, it is characterised in that including：Acquiring unit, for using control signal control compressor operating, and first when obtaining the compressor operating is reverse Electromotive force, wherein, the control signal is used to control the compressor operating in the first rotating speed；Judging unit, for based on first inverse electromotive force, judging whether the compressor occurs stuck failure；The judging unit includes：Acquisition module, for obtaining the second inverse electromotive force corresponding with first rotating speed；Compare Module, for first inverse electromotive force and second inverse electromotive force, obtains comparative result；Judgment module, is used In judging whether the compressor occurs the stuck failure based on the comparative result.
- 9. detection device according to claim 8, it is characterised in that the comparison module includes：Calculating sub module, for calculating the ratio of first inverse electromotive force and second inverse electromotive force；Comparison sub-module, the size for the ratio and preset value.
- 10. detection device according to claim 9, it is characterised in that the judgment module includes：First judging submodule, for when the comparative result indicates that the ratio is less than the preset value, then judging institute State compressor and the stuck failure occurs；Second judgment submodule, for when the comparative result indicates that the ratio is more than or equal to the preset value, then judging It has the compressor and the stuck failure does not occur.
- 11. detection device according to claim 10, it is characterised in that described device further includes：First display unit, for that after judging that the stuck failure occurs for the compressor, will be used to indicate the pressure The configured information that the stuck failure occurs for contracting machine is shown on the display of indoor apparatus of air conditioner, wherein, the configured information is extremely Include stuck failure code less；OrSecond display unit, for by for indicating that the configured information of the compressor generation stuck failure was sent to end End.
- 12. detection device according to claim 8, it is characterised in that described device further includes：First generation module, for before utilization control signal control compressor operating, after the compressor start, giving birth to Into the control signal；OrSecond generation module, for overcurrent protection to occur in the compressor, and after restarting, generates the control letter Number.
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| 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 |
| 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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| CN101196331A (en) * | 2006-12-05 | 2008-06-11 | 三星电子株式会社 | Air conditioner and its control method |
| WO2012025904A2 (en) * | 2010-08-27 | 2012-03-01 | Isatech Gmbh | Method for actuating a single-phase small bldc motor |
| CN103511292A (en) * | 2012-06-14 | 2014-01-15 | 株式会社鹭宫制作所 | Dewatering pump |
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| CN1153552A (en) * | 1995-03-14 | 1997-07-02 | 松下冷机株式会社 | Refrigerating apparatus, and refrigerator control and brushless motor starter used in same |
| CN101196331A (en) * | 2006-12-05 | 2008-06-11 | 三星电子株式会社 | Air conditioner and its control method |
| WO2012025904A2 (en) * | 2010-08-27 | 2012-03-01 | Isatech Gmbh | Method for actuating a single-phase small bldc motor |
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