CN104595171B - Compressor and low-voltage variation control method thereof and device - Google Patents
Compressor and low-voltage variation control method thereof and device Download PDFInfo
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Abstract
The invention provides a kind of compressor and low-voltage variation control method thereof and device.Wherein, the low-voltage variation control method of compressor includes: detection goal pressure；Obtain the unlatching duration of compressor；Relatively open the size of duration and preset duration；Comparing unlatching duration less than in the case of preset duration, it is judged that whether goal pressure is less than the first preset pressure；Comparing unlatching duration more than or equal in the case of preset duration, it is judged that whether goal pressure is less than the second preset pressure, and wherein, the second preset pressure is more than the first preset pressure；Judging that goal pressure is less than the first preset pressure, or in the case of judging that goal pressure is less than the second preset pressure, sending out code to compressor.By the present invention, the low-voltage variation control method solving compressor in prior art easily causes the problem of compressor damage, has reached to ensure the reliability of compressor operating, improve the effect in compressor service life.
Description
Technical field
The present invention relates to compressor field, in particular to a kind of compressor and low-voltage variation control method thereof and dress
Put.
Background technology
At present, the low-voltage variation logic of most compressors is all controlled by pressure switch, due to compressor from
Shut down to start during, pressure can ratio relatively low, pressure switch can disconnect, can take in generally this period shielding
The process of low-voltage variation.
This control mode has certain risk, if really there is the demand of compressor low-voltage variation, then owing to adopting
Take the control mode of shielding low-voltage protection, will cause cannot compressor being played a protective role, and easily cause compressor
Damage, shorten the service life of compressor.
The problem of compressor damage is easily caused, the most still for the low-voltage variation control method of compressor in prior art
Effective solution is not proposed.
Summary of the invention
A kind of compressor of offer and low-voltage variation control method thereof and device are provided, existing to solve
There is the problem that the low-voltage variation control method of compressor in technology easily causes compressor damage.
To achieve these goals, an aspect according to embodiments of the present invention, it is provided that the low pressure of a kind of compressor is protected
Protect control method.
The low-voltage variation control method of the compressor according to the present invention includes: detection goal pressure, wherein, and described target
Pressure is package pressure or the low pressure of described compressor of described compressor；Obtain the unlatching duration of described compressor；
Relatively described unlatching duration and the size of preset duration；Comparing the described unlatching duration feelings less than described preset duration
Under condition, it is judged that whether described goal pressure is less than the first preset pressure；It is more than or equal to comparing described unlatching duration
In the case of described preset duration, it is judged that whether described goal pressure is less than the second preset pressure, wherein, described second
Preset pressure is more than described first preset pressure；And judging that described goal pressure is less than described first preset pressure,
Or in the case of judging that described goal pressure is less than described second preset pressure, send out code to described compression
Machine.
Further, described first preset pressure includes pressure lpx1 and the pressure lpx2 less than described pressure lpx1,
Before judging that whether described goal pressure is less than the first preset pressure, described low-voltage variation control method also includes: inspection
Survey the ambient temperature residing for described compressor, it is judged that whether described goal pressure includes less than the first preset pressure: compare
Described ambient temperature and the size of the first preset temperature；Comparing described ambient temperature more than described first preset temperature
In the case of, it is judged that whether described goal pressure is less than described pressure lpx1；And it is little comparing described ambient temperature
In or equal in the case of described first preset temperature, it is judged that described goal pressure whether less than described pressure lpx2, its
In, judging that described goal pressure is less than described pressure lpx1, or judging that described goal pressure is less than described pressure
In the case of power lpx2, determine that described goal pressure is less than described first preset pressure.
Further, described low-voltage variation control method also includes: before obtaining the unlatching duration of described compressor,
Obtain the on off state of described compressor, wherein, in the case of described on off state represents open state, obtain institute
State unlatching duration；In the case of described on off state represents off-mode, it is judged that whether described goal pressure is less than the
Three preset pressure；And in the case of judging that described goal pressure is less than described 3rd preset pressure, send described
Out code is to described compressor.
Further, described 3rd preset pressure includes pressure lpx3 and the pressure lpx4 more than described pressure lpx3,
Before judging that whether described goal pressure is less than the 3rd preset pressure, described low-voltage variation control method also includes: inspection
Survey the ambient temperature residing for described compressor, it is judged that whether described goal pressure includes less than the 3rd preset pressure: compare
Described ambient temperature and the size of the second preset temperature；Second pre-less than or equal to described comparing described ambient temperature
If in the case of temperature, it is judged that whether described goal pressure is less than described pressure lpx3；And comparing described environment
Temperature is more than in the case of described second preset temperature, it is judged that whether described goal pressure is less than described pressure lpx4, its
In, judging that described goal pressure is less than described pressure lpx3, or judging that described goal pressure is less than described pressure
In the case of power lpx4, determine that described goal pressure is less than described 3rd preset pressure.
Further, described low-voltage variation control method also includes: before obtaining the on off state of described compressor,
Judge whether target controller sends start-up command extremely described compressor, wherein, judging that described target controller is sent out
In the case of sending described start-up command extremely described compressor, obtaining described on off state, described target controller is for controlling
The controller of described compressor；Judging that described target controller does not sends described start-up command to described compressor
In the case of, it is judged that whether described goal pressure is less than described first preset pressure or described 3rd preset pressure；And
In the case of judging that described goal pressure is less than described first preset pressure or described 3rd preset pressure, send described
Out code is to described compressor.
Further, described low-voltage variation control method also includes: judge whether described goal pressure is preset less than the 4th
Pressure, wherein, in the case of judging that described goal pressure is more than or equal to described 4th preset pressure, it is judged that mesh
Whether mark controller sends start-up command to described compressor；And judging that described goal pressure is less than the described 4th
In the case of preset pressure, send described out code to described compressor.
To achieve these goals, another aspect according to embodiments of the present invention, it is provided that the low pressure of a kind of compressor is protected
Protect control device.
The low-voltage variation of the compressor according to the present invention controls device and includes: the first detector unit, is used for detecting target pressure
Power, wherein, described goal pressure is package pressure or the low pressure of described compressor of described compressor；First obtains
Take unit, for obtaining the unlatching duration of described compressor；Comparing unit, for relatively described unlatching duration with default
The size of duration；First judging unit, for comparing described unlatching duration less than in the case of described preset duration,
Judge that whether described goal pressure is less than the first preset pressure；Second judging unit, for when comparing described unlatching
Long more than or equal in the case of described preset duration, it is judged that whether described goal pressure is less than the second preset pressure, its
In, described second preset pressure is more than described first preset pressure；And first transmitting element, for judging
State goal pressure and be less than described first preset pressure, or judging that described goal pressure is less than described second preset pressure
In the case of, send out code to described compressor.
Further, described first preset pressure includes pressure lpx1 and the pressure lpx2 less than described pressure lpx1,
Described low-voltage variation controls device and also includes: the second detector unit, for judging described mesh at described first judging unit
Mark pressure, whether less than before the first preset pressure, detects the ambient temperature residing for described compressor, and described first judges
Unit includes: the first comparison module, for the size of relatively described ambient temperature with the first preset temperature；First judges
Module, for comparing described ambient temperature more than in the case of described first preset temperature, it is judged that described target pressure
Whether power is less than described pressure lpx1；And second judge module, for compare described ambient temperature less than or etc.
In the case of described first preset temperature, it is judged that whether described goal pressure is less than described pressure lpx2, wherein, exist
Judge that described goal pressure is less than described pressure lpx1, or judge that described goal pressure is less than described pressure lpx2
In the case of, determine that described goal pressure is less than described first preset pressure.
Further, described low-voltage variation controls device and also includes: second acquisition unit, for obtaining described compression
Before the unlatching duration of machine, obtain the on off state of described compressor, wherein, represent start shape at described on off state
In the case of state, obtain described unlatching duration；3rd judging unit, for representing off-mode at described on off state
In the case of, it is judged that whether described goal pressure is less than the 3rd preset pressure；And second transmitting element, for sentencing
Break and described goal pressure less than in the case of described 3rd preset pressure, send described out code to described compressor.
Further, described 3rd preset pressure includes pressure lpx3 and the pressure lpx4 more than described pressure lpx3,
Described low-voltage variation controls device and also includes: the 3rd detector unit, for judging that whether described goal pressure is less than the
Before three preset pressure, detecting the ambient temperature residing for described compressor, described 3rd judging unit includes: the second ratio
Relatively module, for the size of relatively described ambient temperature with the second preset temperature；3rd judge module, for comparing
Go out described ambient temperature less than or equal in the case of described second preset temperature, it is judged that whether described goal pressure is less than
Described pressure lpx3；And the 4th judge module, for presetting temperature more than described second comparing described ambient temperature
In the case of degree, it is judged that described goal pressure, whether less than described pressure lpx4, wherein, is judging described target pressure
Power is less than described pressure lpx3, or judges that described goal pressure, less than in the case of described pressure lpx4, determines
Described goal pressure is less than described 3rd preset pressure.
Further, described low-voltage variation controls device and also includes: the 4th judging unit, for obtaining described second
Before unit obtains the on off state of described compressor, it is judged that whether target controller sends start-up command to described compression
At described 4th judging unit, machine, wherein, judges that described target controller sends described start-up command to described compression
In the case of machine, described second acquisition unit obtains described on off state, and described target controller is for controlling described compression
The controller of machine；At described 4th judging unit, 5th judging unit, judges that described target controller does not sends described
In the case of start-up command extremely described compressor, it is judged that whether described goal pressure is less than described first preset pressure or institute
State the 3rd preset pressure；And the 3rd transmitting element, judging that described goal pressure is less than described first preset pressure
Or in the case of described 3rd preset pressure, send described out code to described compressor.
Further, described low-voltage variation controls device and also includes: the 6th judging unit, is used for judging described target pressure
Whether power is less than the 4th preset pressure, wherein, is judging that described goal pressure presets pressure more than or equal to the described 4th
In the case of power, described 4th judging unit judges whether target controller sends start-up command to described compressor；With
And the 4th transmitting element, for, in the case of judging that described goal pressure is less than described 4th preset pressure, sending
Described out code is to described compressor.
To achieve these goals, another aspect according to embodiments of the present invention, it is provided that a kind of compressor.
Compressor according to the present invention includes that the low-voltage variation of any one described compressor that foregoing provided controls dress
Put.
According to inventive embodiments, using detection goal pressure, wherein, described goal pressure is the package of described compressor
Pressure or the low pressure of described compressor；Obtain the unlatching duration of described compressor；Relatively described unlatching duration is with pre-
If the size of duration；Comparing described unlatching duration less than in the case of described preset duration, it is judged that described target pressure
Whether power is less than the first preset pressure；Comparing described unlatching duration more than or equal in the case of described preset duration,
Judge described goal pressure whether less than the second preset pressure, wherein, described second preset pressure is first pre-more than described
If pressure；And judging that described goal pressure is less than described first preset pressure, or judging described target pressure
Power, less than in the case of described second preset pressure, sends out code to described compressor.By compressor is opened
Open duration to obtain, and compare the size opening duration with preset duration, at runtime in the case of difference, adopt
Take different preset pressure values as low-voltage variation value as the basis that compressor is carried out low-voltage variation, it is achieved that take
Staged care mode carries out low-voltage variation to compressor, and during compressor start, low-voltage variation value arranges relatively low,
After compressor operating a period of time, low-voltage variation value arranges more relatively large, carries out low to compressor at any time to determine
Pressure protection, it is to avoid what the control mode taking shielding low-voltage to protect in prior art was caused cannot protect compressor
The drawback protected, the low-voltage variation control method solving compressor in prior art easily causes the problem of compressor damage,
Reach to ensure the reliability of compressor operating, improve the effect in compressor service life.
Accompanying drawing explanation
The accompanying drawing of the part constituting the application is used for providing a further understanding of the present invention, and the present invention's is schematic real
Execute example and illustrate for explaining the present invention, being not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart of the low-voltage variation control method of compressor according to embodiments of the present invention；
Fig. 2 is the flow chart of the low-voltage variation control method of compressor according to the preferred embodiment of the invention；And
Fig. 3 is the schematic diagram of the low-voltage variation control device of compressor 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 a kind of embodiment of the method that may be used for implementing the application device embodiment,
It should be noted that can be in the calculating of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing
Machine system performs, and, although show logical order in flow charts, but in some cases, can be with
It is different from the step shown or described by order execution herein.
According to embodiments of the present invention, it is provided that the low-voltage variation control method of a kind of compressor.Fig. 1 is according to the present invention
The flow chart of the low-voltage variation control method of the compressor of embodiment, as it is shown in figure 1, the method includes the steps
S102 is to step S112:
S102: detection goal pressure, wherein, goal pressure is package pressure or the low pressure of compressor of compressor,
This step namely detects package pressure or the low pressure of compressor of compressor.
S104: obtain the unlatching duration of compressor, wherein, during the operation opening duration i.e. compressor of compressor
Long.
S106: comparing the size opening duration with preset duration, in embodiments of the present invention, preset duration can be 60S.
S108: comparing unlatching duration less than in the case of preset duration, it is judged that goal pressure is the most pre-less than first
If pressure.
S110: comparing unlatching duration more than or equal in the case of preset duration, it is judged that whether goal pressure is less than
Second preset pressure, wherein, the second preset pressure is more than the first preset pressure, and in embodiments of the present invention, second is pre-
If pressure can be 220KP.
S112: judging that goal pressure is less than the first preset pressure, or judging that goal pressure is less than second and presets
In the case of pressure, transmission out code, to compressor, is namely judging that goal pressure is less than the first preset pressure,
Or in the case of judging that goal pressure is less than the second preset pressure, control compressor and close.
In embodiments of the present invention, by the unlatching duration of compressor is obtained, and compare unlatching duration and preset
The size of duration, at runtime in the case of difference, takes different preset pressure values as low-voltage variation value conduct
Compressor is carried out the basis of low-voltage variation, it is achieved that take staged care mode that compressor is carried out low-voltage variation,
During compressor start, low-voltage variation value arranges relatively low, and after compressor operating a period of time, low-voltage variation value sets
Put more relatively large, at any time compressor is carried out low-voltage variation to determine, it is to avoid prior art is taked shielding low-voltage protect
The drawback cannot protected compressor that the control mode protected is caused, solves the low of compressor in prior art
Pressure protection control method easily causes the problem of compressor damage, has reached to ensure the reliability of compressor operating, raising
The effect in compressor service life.
Preferably, the first preset pressure includes pressure lpx1 and the pressure lpx2 less than pressure lpx1, wherein, lpx1
Can be 170KP, lpx2 can be 130KP, before judging that goal pressure is whether less than the first preset pressure, this
The low-voltage variation control method of the compressor that inventive embodiments is provided also includes:
Detection ambient temperature residing for compressor, specifically, can carry out environment temperature while detection goal pressure
The detection of degree.
Now, it is judged that whether goal pressure includes less than the first preset pressure: compare ambient temperature and the first preset temperature
Size；Comparing ambient temperature more than in the case of the first preset temperature, it is judged that whether goal pressure is less than pressure
lpx1；Comparing ambient temperature less than or equal in the case of the first preset temperature, it is judged that whether goal pressure is less than
Pressure lpx2, wherein, is judging that goal pressure is less than pressure lpx1, or is judging that goal pressure is less than pressure lpx2
In the case of, determine that goal pressure is less than the first preset pressure, namely judging that goal pressure is less than pressure lpx1,
Or in the case of judging that goal pressure is less than pressure lpx2, control compressor and close.
In embodiments of the present invention, when compressor is in open state, start low-voltage variation first is utilized to preset temperature
Degree carries out the judgement of pressure size as temperature trip point, has reached the effect of the degree of accuracy improving compressor low-voltage variation.
Preferably, the low-voltage variation control method of the compressor provided in the embodiment of the present invention also includes:
Before obtaining the unlatching duration of compressor, obtain the on off state of compressor, wherein, represent on off state
In the case of open state, obtain and open duration, namely obtain compressor and be in the operation duration of open state.
In the case of on off state represents off-mode, it is judged that whether goal pressure is less than the 3rd preset pressure, the most just
It is, when judging that compressor is in off-mode, comparison object pressure and the magnitude relationship of the 3rd preset pressure.
In the case of judging that goal pressure is less than the 3rd preset pressure, send out code to compressor, i.e.
In the case of judging that goal pressure is less than the 3rd preset pressure, control compressor and close.
In embodiments of the present invention, by obtain compressor on off state so that compressor be in open state or
During off-mode, be utilized respectively value based on different force value with actually detected to goal pressure contrast,
Reach the effect of the degree of accuracy improving low-voltage variation.
Preferably, the 3rd preset pressure includes pressure lpx3 and the pressure lpx4 more than pressure lpx3, wherein, lpx3
Can be 120KP, lpx4 can be 240KP, before judging that goal pressure is whether less than the 3rd preset pressure, this
The low-voltage variation control method of the compressor that inventive embodiments is provided also includes:
Detection ambient temperature residing for compressor, specifically, can carry out environment temperature while detection goal pressure
The detection of degree.
Now, it is judged that whether goal pressure includes less than the 3rd preset pressure: compare ambient temperature and the second preset temperature
Size；Comparing ambient temperature less than or equal in the case of the second preset temperature, it is judged that goal pressure is the least
In pressure lpx3；Comparing ambient temperature more than in the case of the second preset temperature, it is judged that whether goal pressure is less than
Pressure lpx4, wherein, is judging that goal pressure is less than pressure lpx3, or is judging that goal pressure is less than pressure lpx4
In the case of, determine that goal pressure is less than the 3rd preset pressure.In embodiments of the present invention, goal pressure is being judged
Less than pressure lpx3, or in the case of judging that goal pressure is less than pressure lpx4, control compressor and close.
In embodiments of the present invention, when compressor is in standby or stopped status, utilizes and start the of low-voltage variation
Two preset temperatures carry out the judgement of pressure size as temperature trip point, have reached the effect of the degree of accuracy improving low-voltage variation
Really.
Specifically, the low-voltage variation control method of the compressor provided in the embodiment of the present invention also includes: obtaining pressure
Before the on off state of contracting machine, it is judged that whether target controller sends start-up command to compressor, wherein, then judges
Target controller sends start-up command in the case of compressor, obtains on off state, and target controller is for controlling compression
The controller of machine；Judging that target controller does not sends start-up command in the case of compressor, it is judged that goal pressure
Whether less than the first preset pressure or the 3rd preset pressure, namely judge that whether goal pressure is less than pressure lpx1 and pressure
Arbitrary pressure in arbitrary pressure or pressure lpx3 and pressure lpx4 in power lpx2；Judging that goal pressure is less than
In the case of one preset pressure or the 3rd preset pressure, transmission out code is to compressor, it is, judging mesh
Mark pressure is less than arbitrary pressure in arbitrary pressure in pressure lpx1 and pressure lpx2 or pressure lpx3 and pressure lpx4
In the case of, control compressor and close.
Specifically, the low-voltage variation control method of the compressor provided in the embodiment of the present invention also includes: judge target
Pressure, whether less than the 4th preset pressure, wherein, is judging that goal pressure is more than or equal to the feelings of the 4th preset pressure
Under condition, it is judged that whether target controller sends start-up command to compressor, the 4th preset pressure less than above-mentioned any one
Preset pressure value, i.e. the 4th preset pressure is a minimum force value, in embodiments of the present invention, the 4th presets
Pressure can be 100KP；In the case of judging that goal pressure is less than the 4th preset pressure, send out code extremely
Compressor, it is, in the case of judging that goal pressure is less than the 4th preset pressure, control compressor and close.
Fig. 2 is the flow chart of the low-voltage variation control method of a kind of preferred compressor according to embodiments of the present invention, as
Shown in Fig. 2, the method includes that steps S202 is to step S228:
S202: detection goal pressure, same, goal pressure is package pressure or the low pressure pressure of compressor of compressor
Power.
S204: judge whether goal pressure is less than pressure lpless, wherein, pressure lpless represents the 4th preset pressure.
In the case of judging that goal pressure is less than pressure lpless, perform step S206；Judging that goal pressure is higher than
In the case of lpless, perform step S208.
S206: close compressor.
S208: judge whether manual operator sends power-on command, this step is specially and judges whether manual operator sends start life
Order is to compressor, and manual operator herein is the target controller in above-described embodiment.Open judging that manual operator sends
Machine order, in the case of compressor, performs step S212；Judging that manual operator does not sends power-on command to compressor
In the case of, perform step S210.
S210: judge whether goal pressure is less than pressure Lpx1, pressure Lpx2, pressure Lpx3 or pressure Lpx4,
This step is specially and judges that whether goal pressure is less than pressure Lpx1, pressure Lpx2, pressure Lpx3 and pressure Lpx4
In arbitrary pressure, judging that goal pressure is whether less than pressure Lpx1, pressure Lpx2, pressure Lpx3 and pressure
In Lpx4 in the case of arbitrary pressure, perform step S206.Wherein, pressure Lpx1 and pressure Lpx2 composition first
Preset pressure, pressure Lpx3 and pressure Lpx4 form the 3rd preset pressure.
S212: judge whether compressor is opened, namely judges whether compressor is in open state, is judging pressure
In the case of contracting machine is in open state, perform step S214；Judging that compressor is in the situation of the state of being not keyed up
Under, perform step S224.
S214: judge whether the compressor opening time is less than ts, wherein, ts is the preset duration in above-described embodiment,
In embodiments of the present invention, can be 60S, this step namely judges whether the operation of compressor reaches preset duration,
In the case of the operation time judging compressor reaches preset duration, perform step S222；Judging compressor
The operation time be not up to preset duration in the case of, perform step S216.
S216: judge whether ambient temperature is more than T1, wherein, T1 is the first preset temperature, in the embodiment of the present invention
In, T1 can be-5 DEG C.Specifically, ambient temperature is the ambient temperature residing for compressor, can be in detection target pressure
While power, detection ambient temperature residing for compressor.This step is specifically, judge that whether ambient temperature is more than first
Preset temperature, in the case of judging that ambient temperature is more than the first preset temperature, performs step S218；Judging
Ambient temperature, less than or equal in the case of the first preset temperature, performs step S220.
S218: judge whether goal pressure is less than pressure Lpx1, it is, judge that goal pressure is the most pre-less than first
If the pressure Lpx1 in pressure, in the case of judging the pressure Lpx1 that goal pressure is less than in the first preset pressure,
Perform step S206；Judging the situation of pressure Lpx1 that goal pressure is more than or equal in the first preset pressure
Under, return step S212.
S220: judge whether goal pressure is less than pressure Lpx2, it is, judge that goal pressure is the most pre-less than first
If the pressure Lpx2 in pressure, in the case of judging the pressure Lpx2 that goal pressure is less than in the first preset pressure,
Perform step S206；Judging the situation of pressure Lpx2 that goal pressure is more than or equal in the first preset pressure
Under, return step S212.
S222: judge whether goal pressure is less than pressure lpp, wherein, pressure lpp is the second preset pressure.Judging
Go out goal pressure less than in the case of pressure lpp, perform step S206；Judging that goal pressure is more than or equal to
In the case of pressure lpp, return step S212.
S224: judge whether ambient temperature is more than T2, wherein, T2 is the second preset temperature, in the embodiment of the present invention
In, T2 can be 10 DEG C.In the case of ambient temperature is more than T2, perform step S226；It is less than in ambient temperature
Or equal in the case of T2, perform step S228.
S226: judge whether goal pressure is less than pressure Lpx4, it is, judge that goal pressure is the most pre-less than the 3rd
If the pressure Lpx4 in pressure, in the case of judging that goal pressure is less than the pressure Lpx4 in the 3rd preset pressure,
Perform step S226；Judging that goal pressure is more than or equal to the situation of the pressure Lpx4 in the 3rd preset pressure
Under, return step S212.
S228: judge whether goal pressure is less than pressure Lpx3, it is, judge that goal pressure is the most pre-less than the 3rd
If the pressure Lpx3 in pressure, in the case of judging that goal pressure is less than the pressure Lpx3 in the 3rd preset pressure,
Perform step S226；Judging that goal pressure is more than or equal to the situation of the pressure Lpx3 in the 3rd preset pressure
Under, return step S212.
The low-voltage variation control method of the compressor that the preferred embodiment of the present invention is provided, is carried out compressor low-voltage variation
Classification, during compressor start, low-voltage variation value arranges relatively low, after compressor operating a period of time, low pressure
Protection value arranges more relatively large, and, when compressor is closed, the low-voltage variation value of compressor is also configured to not
Equally, meanwhile, for avoiding the occurrence of abnormal conditions, it is also provided with minimum protection value, and in the goal pressure detected
When reaching minimum protection value, send out code to compressor and control compressor and close, so that compressor is carried out low
Pressure protection, it is achieved that farthest improve the degree of accuracy of compressor low-voltage variation.
It should be noted that for aforesaid each method embodiment, in order to be briefly described, therefore it is all expressed as one it be
The combination of actions of row, but those skilled in the art should know, the present invention not limiting by described sequence of movement
System, because according to the present invention, some step can use other orders or carry out simultaneously.Secondly, art technology
Personnel also should know, embodiment described in this description belongs to preferred embodiment, involved action and module
Not necessarily necessary to the present invention.
Through the above description of the embodiments, those skilled in the art is it can be understood that arrive according to above-mentioned enforcement
The method of example can add the mode of required general hardware platform by software and realize, naturally it is also possible to by hardware, but
In the case of Hen Duo, the former is more preferably embodiment.Based on such understanding, technical scheme substantially or
Saying that the part contributing prior art can embody with the form of software product, this computer software product is deposited
Storage is in a storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions with so that an end
End equipment (can be mobile phone, computer, server, or the network equipment etc.) performs each embodiment institute of the present invention
The method stated.
Embodiment 2
According to embodiments of the present invention, the low pressure of the compressor additionally providing the low-voltage variation control method of a kind of compressor is protected
Protecting control device, this control device is mainly used in performing the control method that embodiment of the present invention foregoing is provided, with
Under the low-voltage variation of compressor that the embodiment of the present invention is provided control device and do concrete introduction:
Fig. 3 is the schematic diagram of the low-voltage variation control device of compressor according to embodiments of the present invention, as it is shown on figure 3,
This device mainly include first detector unit the 10, first acquiring unit 20, comparing unit the 30, first judging unit 40,
Second judging unit 50 and the first transmitting element 60, wherein:
First detector unit 10 is used for detecting goal pressure, and wherein, goal pressure is package pressure or the compression of compressor
The low pressure of machine, this unit namely detects package pressure or the low pressure of compressor of compressor.
First acquiring unit 20 is for obtaining the unlatching duration of compressor, and wherein, the unlatching duration of compressor is namely pressed
The operation duration of contracting machine.
Comparing unit 30 is for comparing the size opening duration with preset duration, in embodiments of the present invention, preset duration
Can be 60S.
First judging unit 40 for compare unlatching duration less than preset duration in the case of, it is judged that goal pressure is
No it is less than the first preset pressure.
Second judging unit 50 for compare unlatching duration more than or equal to preset duration in the case of, it is judged that target
Whether pressure is less than the second preset pressure, and wherein, the second preset pressure is more than the first preset pressure, implements in the present invention
In example, the second preset pressure can be 220KP.
First transmitting element 60 is for judging that goal pressure is less than the first preset pressure, or is judging goal pressure
In the case of the second preset pressure, transmission out code, to compressor, is namely judging that goal pressure is less than
First preset pressure, or in the case of judging that goal pressure is less than the second preset pressure, control compressor and close.
In embodiments of the present invention, by the unlatching duration of compressor is obtained, and compare unlatching duration and preset
The size of duration, at runtime in the case of difference, takes different preset pressure values as low-voltage variation value conduct
Compressor is carried out the basis of low-voltage variation, it is achieved that take staged care mode that compressor is carried out low-voltage variation,
During compressor start, low-voltage variation value arranges relatively low, and after compressor operating a period of time, low-voltage variation value sets
Put more relatively large, at any time compressor is carried out low-voltage variation to determine, it is to avoid prior art is taked shielding low-voltage protect
The drawback cannot protected compressor that the control mode protected is caused, solves the low of compressor in prior art
Pressure protection control method easily causes the problem of compressor damage, has reached to ensure the reliability of compressor operating, raising
The effect in compressor service life.
Preferably, the first preset pressure includes pressure lpx1 and the pressure lpx2 less than pressure lpx1, wherein, lpx1
Can be 170KP, lpx2 can be 130KP, the low-voltage variation of the compressor that the embodiment of the present invention is provided controls dress
Putting and also include the second detector unit, wherein, whether the second detector unit is for judging goal pressure at the first judging unit
Before the first preset pressure, detection ambient temperature residing for compressor.
Now, the first judging unit 40 includes the first comparison module, the first judge module and the second judge module, wherein,
First comparison module is for comparing the size of ambient temperature and the first preset temperature；First judge module is for comparing
Ambient temperature is more than in the case of the first preset temperature, it is judged that whether goal pressure is less than pressure lpx1；Second judges mould
Block, for comparing ambient temperature less than or equal in the case of the first preset temperature, it is judged that goal pressure is the least
In pressure lpx2, wherein, judging that goal pressure is less than pressure lpx1, or judging that goal pressure is less than pressure
In the case of lpx2, determine that goal pressure is less than the first preset pressure, namely judging that goal pressure is less than pressure
Lpx1, or in the case of judging that goal pressure is less than pressure lpx2, control compressor and close.
In embodiments of the present invention, when compressor is in open state, start low-voltage variation first is utilized to preset temperature
Degree carries out the judgement of pressure size as temperature trip point, has reached the effect of the degree of accuracy improving compressor low-voltage variation.
Preferably, the compressor that the embodiment of the present invention is provided low-voltage variation control device also include second acquisition unit,
3rd judging unit and the second transmitting element, wherein:
Second acquisition unit is used for before obtaining the unlatching duration of compressor, the on off state of acquisition compressor, wherein,
In the case of on off state represents open state, obtain and open duration, namely obtain compressor and be in open state
Operation duration.
3rd judging unit is in the case of on off state represents off-mode, it is judged that whether goal pressure is less than the
Three preset pressure, it is, when judging that compressor is in off-mode, comparison object pressure and the 3rd presets pressure
The magnitude relationship of power.
Second transmitting element, in the case of judging that goal pressure is less than the 3rd preset pressure, sends out code
To compressor, i.e. in the case of judging that goal pressure is less than the 3rd preset pressure, control compressor and close.
In embodiments of the present invention, by obtain compressor on off state so that compressor be in open state or
During off-mode, be utilized respectively value based on different force value with actually detected to goal pressure contrast,
Reach the effect of the degree of accuracy improving low-voltage variation.
Preferably, the 3rd preset pressure includes pressure lpx3 and the pressure lpx4 more than pressure lpx3, wherein, lpx3
Can be 120KP, lpx4 can be 240KP, the low-voltage variation of the compressor that the embodiment of the present invention is provided controls dress
Putting and also include the 3rd detector unit, wherein, the 3rd detector unit is for judging whether goal pressure is preset less than the 3rd
Before pressure, detection ambient temperature residing for compressor, specifically, can carry out while detection goal pressure
The detection of ambient temperature.
Now, the 3rd judging unit includes the second comparison module, the 3rd judge module and the 4th judge module, wherein,
Second comparison module is for comparing the size of ambient temperature and the second preset temperature；3rd judge module is for comparing
Ambient temperature is less than or equal in the case of the second preset temperature, it is judged that whether goal pressure is less than pressure lpx3；4th
Judge module is for comparing ambient temperature more than in the case of the second preset temperature, it is judged that whether goal pressure is less than
Pressure lpx4, wherein, is judging that goal pressure is less than pressure lpx3, or is judging that goal pressure is less than pressure lpx4
In the case of, determine that goal pressure is less than the 3rd preset pressure.In embodiments of the present invention, goal pressure is being judged
Less than pressure lpx3, or in the case of judging that goal pressure is less than pressure lpx4, control compressor and close.
In embodiments of the present invention, when compressor is in standby or stopped status, utilizes and start the of low-voltage variation
Two preset temperatures carry out the judgement of pressure size as temperature trip point, have reached the effect of the degree of accuracy improving low-voltage variation
Really.
Specifically, the low-voltage variation of the compressor provided in the embodiment of the present invention controls device and also includes that the 4th judgement is single
Unit, the 5th judging unit and the 3rd transmitting element, wherein, the 4th judging unit is for obtaining pressure at second acquisition unit
Before the on off state of contracting machine, it is judged that whether target controller sends start-up command to compressor, wherein, sentences the 4th
Disconnected unit judges goes out target controller and sends start-up command in the case of compressor, and second acquisition unit obtains switch shape
State, target controller is the controller controlling compressor；5th judging unit, judges target at the 4th judging unit
Controller does not sends start-up command in the case of compressor, it is judged that whether goal pressure is less than the first preset pressure or the
Three preset pressure, namely judge that whether goal pressure is less than arbitrary pressure or pressure in pressure lpx1 and pressure lpx2
Arbitrary pressure in lpx3 and pressure lpx4；3rd transmitting element is judging that goal pressure is less than the first preset pressure or
In the case of three preset pressure, it is, judging that goal pressure is less than arbitrary pressure in pressure lpx1 and pressure lpx2
In power or pressure lpx3 and pressure lpx4 in the case of arbitrary pressure, control compressor and close.
Specifically, the low-voltage variation of the compressor provided in the embodiment of the present invention controls device and also includes that the 6th judgement is single
Unit, wherein, the 6th judging unit is used for judging that goal pressure, whether less than the 4th preset pressure, wherein, is being judged
Goal pressure is more than or equal in the case of the 4th preset pressure, and the 4th judging unit judges whether target controller sends
Start-up command is to compressor, and the 4th preset pressure is less than any one preset pressure value above-mentioned, i.e. the 4th preset pressure
Being a minimum force value, in embodiments of the present invention, the 4th preset pressure can be 100KP, and the 4th sends list
Unit is in the case of judging that goal pressure is less than the 4th preset pressure, and transmission out code is to compressor, the most just
It is, in the case of judging that goal pressure is less than the 4th preset pressure, to control compressor and close.
Additionally, the embodiment of the present invention additionally provides a kind of compressor, this compressor includes embodiment of the present invention foregoing
The low-voltage variation of any one compressor provided controls device.
As can be seen from the above description, the low-voltage variation controlling party of compressor during the present invention solves prior art
Method easily causes the problem of compressor damage, has reached to ensure the reliability of compressor operating, improve the compressor use longevity
The effect of life.
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 client, can be passed through other
Mode realizes.Wherein, device embodiment described above is only schematically, the division of the most described unit,
Being only a kind of logic function to divide, 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 NEs.Some or all of unit therein can be selected according to the actual needs to realize the present embodiment
The purpose of scheme.
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 (13)
1. the low-voltage variation control method of a compressor, it is characterised in that including:
Detection goal pressure, wherein, described goal pressure is the package pressure of described compressor or described compressor
Low pressure；
Obtain the unlatching duration of described compressor；
Relatively described unlatching duration and the size of preset duration；
Comparing described unlatching duration less than in the case of described preset duration, it is judged that described goal pressure whether
Less than the first preset pressure；
Comparing described unlatching duration more than or equal in the case of described preset duration, it is judged that described target pressure
Whether power is less than the second preset pressure, and wherein, described second preset pressure is more than described first preset pressure；With
And
Judging that described goal pressure is less than described first preset pressure, or judging that described goal pressure is little
In the case of described second preset pressure, send out code to described compressor.
Low-voltage variation control method the most according to claim 1, it is characterised in that described first preset pressure includes
Pressure lpx1 and the pressure lpx2 less than described pressure lpx1, is judging that described goal pressure is the most pre-less than first
If before pressure, described low-voltage variation control method also includes:
Detect the ambient temperature residing for described compressor,
Judge whether described goal pressure includes less than the first preset pressure:
Relatively described ambient temperature and the size of the first preset temperature；
Comparing described ambient temperature more than in the case of described first preset temperature, it is judged that described goal pressure
Whether less than described pressure lpx1；And
Comparing described ambient temperature less than or equal in the case of described first preset temperature, it is judged that described mesh
Whether mark pressure is less than described pressure lpx2,
Wherein, judging that described goal pressure is less than described pressure lpx1, or judging described goal pressure
In the case of described pressure lpx2, determine that described goal pressure is less than described first preset pressure.
Low-voltage variation control method the most according to claim 1, it is characterised in that described low-voltage variation control method
Also include:
Before obtaining the unlatching duration of described compressor, obtain the on off state of described compressor, wherein,
In the case of described on off state represents open state, obtain described unlatching duration；
In the case of described on off state represents off-mode, it is judged that described goal pressure is the most pre-less than the 3rd
If pressure；And
In the case of judging that described goal pressure is less than described 3rd preset pressure, send described out code
To described compressor.
Low-voltage variation control method the most according to claim 3, it is characterised in that described 3rd preset pressure includes
Pressure lpx3 and the pressure lpx4 more than described pressure lpx3, is judging that described goal pressure is the most pre-less than the 3rd
If before pressure, described low-voltage variation control method also includes:
Detect the ambient temperature residing for described compressor,
Judge whether described goal pressure includes less than the 3rd preset pressure:
Relatively described ambient temperature and the size of the second preset temperature；
Comparing described ambient temperature less than or equal in the case of described second preset temperature, it is judged that described mesh
Whether mark pressure is less than described pressure lpx3；And
Comparing described ambient temperature more than in the case of described second preset temperature, it is judged that described goal pressure
Whether less than described pressure lpx4,
Wherein, judging that described goal pressure is less than described pressure lpx3, or judging described goal pressure
In the case of described pressure lpx4, determine that described goal pressure is less than described 3rd preset pressure.
Low-voltage variation control method the most according to claim 3, it is characterised in that described low-voltage variation control method
Also include:
Before obtaining the on off state of described compressor, it is judged that whether target controller sends start-up command to institute
State compressor, wherein, judging that described target controller sends the feelings of described start-up command extremely described compressor
Under condition, obtaining described on off state, described target controller is the controller controlling described compressor；
In the case of judging that described target controller does not sends described start-up command extremely described compressor, it is judged that
Whether described goal pressure is less than described first preset pressure or described 3rd preset pressure；And
Judging that described goal pressure is less than described first preset pressure or the situation of described 3rd preset pressure
Under, send described out code to described compressor.
Low-voltage variation control method the most according to claim 5, it is characterised in that described low-voltage variation control method
Also include:
Judge that described goal pressure, whether less than the 4th preset pressure, wherein, is judging that described goal pressure is big
In or equal in the case of described 4th preset pressure, it is judged that whether target controller sends start-up command to the most described
Compressor；And
In the case of judging that described goal pressure is less than described 4th preset pressure, send described out code
To described compressor.
7. the low-voltage variation of a compressor controls device, it is characterised in that including:
First detector unit, is used for detecting goal pressure, and wherein, described goal pressure is the shell of described compressor
Pipe pressure or the low pressure of described compressor；
First acquiring unit, for obtaining the unlatching duration of described compressor；
Comparing unit, for the size of relatively described unlatching duration with preset duration；
First judging unit, for comparing described unlatching duration less than in the case of described preset duration, sentences
Whether disconnected described goal pressure is less than the first preset pressure；
Second judging unit, for comparing the described unlatching duration situation more than or equal to described preset duration
Under, it is judged that whether described goal pressure is less than the second preset pressure, and wherein, described second preset pressure is more than institute
State the first preset pressure；And
First transmitting element, for judging that described goal pressure is less than described first preset pressure, or is sentencing
Break and described goal pressure less than in the case of described second preset pressure, send out code to described compressor.
Low-voltage variation the most according to claim 7 controls device, it is characterised in that described first preset pressure includes
Pressure lpx1 and the pressure lpx2 less than described pressure lpx1, described low-voltage variation controls device and also includes:
At described first judging unit, second detector unit, for judging that described goal pressure is the most pre-less than first
If before pressure, detect the ambient temperature residing for described compressor,
Described first judging unit includes:
First comparison module, for the size of relatively described ambient temperature with the first preset temperature；
First judge module, for comparing described ambient temperature more than in the case of described first preset temperature,
Judge that whether described goal pressure is less than described pressure lpx1；And
Second judge module, for comparing described ambient temperature less than or equal to described first preset temperature
In the case of, it is judged that whether described goal pressure is less than described pressure lpx2,
Wherein, judging that described goal pressure is less than described pressure lpx1, or judging described goal pressure
In the case of described pressure lpx2, determine that described goal pressure is less than described first preset pressure.
Low-voltage variation the most according to claim 7 controls device, it is characterised in that described low-voltage variation controls device
Also include:
Second acquisition unit, for, before obtaining the unlatching duration of described compressor, obtaining described compressor
On off state, wherein, in the case of described on off state represents open state, obtains described unlatching duration；
3rd judging unit, in the case of described on off state represents off-mode, it is judged that described target
Whether pressure is less than the 3rd preset pressure；And
Second transmitting element, is used in the case of judging that described goal pressure is less than described 3rd preset pressure,
Send described out code to described compressor.
Low-voltage variation the most according to claim 9 controls device, it is characterised in that described 3rd preset pressure includes
Pressure lpx3 and the pressure lpx4 more than described pressure lpx3, described low-voltage variation controls device and also includes:
3rd detector unit, for, before judging that whether described goal pressure is less than the 3rd preset pressure, detecting
Ambient temperature residing for described compressor,
Described 3rd judging unit includes:
Second comparison module, for the size of relatively described ambient temperature with the second preset temperature；
3rd judge module, for comparing described ambient temperature less than or equal to described second preset temperature
In the case of, it is judged that whether described goal pressure is less than described pressure lpx3；And
4th judge module, for comparing described ambient temperature more than in the case of described second preset temperature,
Judge whether described goal pressure is less than described pressure lpx4,
Wherein, judging that described goal pressure is less than described pressure lpx3, or judging described goal pressure
In the case of described pressure lpx4, determine that described goal pressure is less than described 3rd preset pressure.
11. low-voltage variations according to claim 9 control device, it is characterised in that described low-voltage variation controls device
Also include:
4th judging unit, before obtain the on off state of described compressor at described second acquisition unit,
Judge whether target controller sends start-up command extremely described compressor, wherein, sentence at described 4th judging unit
Breaking in the case of the described target controller described start-up command of transmission extremely described compressor, described second obtains list
Unit obtains described on off state, and described target controller is the controller controlling described compressor；
At described 4th judging unit, 5th judging unit, judges that described target controller does not sends described start
In the case of instruction extremely described compressor, it is judged that whether described goal pressure is less than described first preset pressure or institute
State the 3rd preset pressure；And
3rd transmitting element, is judging that described goal pressure is less than described first preset pressure or described 3rd pre-
If in the case of pressure, send described out code to described compressor.
12. low-voltage variations according to claim 11 control device, it is characterised in that described low-voltage variation controls device
Also include:
6th judging unit, is used for judging that described goal pressure, whether less than the 4th preset pressure, wherein, is being sentenced
Breaking and described goal pressure more than or equal in the case of described 4th preset pressure, described 4th judging unit is sentenced
Whether disconnected target controller sends start-up command to described compressor；And
4th transmitting element, is used in the case of judging that described goal pressure is less than described 4th preset pressure,
Send described out code to described compressor.
13. 1 kinds of compressors, it is characterised in that include that the low pressure of the compressor according to any one of claim 7 to 12 is protected
Protect control device.
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| JP2007322022A (en) * | 2006-05-30 | 2007-12-13 | Denso Corp | Compressor device and refrigerant circulating device |
| JP5113776B2 (en) * | 2009-01-30 | 2013-01-09 | 日立アプライアンス株式会社 | Refrigeration equipment |
| CN201377931Y (en) * | 2009-02-06 | 2010-01-06 | 艾默生网络能源有限公司 | Machine room air-conditioning system started fast at low temperature |
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