CN109357452A - Compressor casing switching detection method and device, air-conditioning - Google Patents
Compressor casing switching detection method and device, air-conditioning Download PDFInfo
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- CN109357452A CN109357452A CN201811219699.5A CN201811219699A CN109357452A CN 109357452 A CN109357452 A CN 109357452A CN 201811219699 A CN201811219699 A CN 201811219699A CN 109357452 A CN109357452 A CN 109357452A
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- Prior art keywords
- pressure
- compressor
- expulsion
- inspiration
- difference
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
- F25B49/022—Compressor control arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1931—Discharge pressures
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2700/00—Sensing or detecting of parameters; Sensors therefor
- F25B2700/19—Pressures
- F25B2700/193—Pressures of the compressor
- F25B2700/1933—Suction pressures
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The disclosure provides a kind of compressor casing switching detection method and device, air-conditioning.Whether the pressure of inspiration(Pi) and pressure at expulsion of compressor casing change detection device detection compressor are in stable state, in the case where the pressure of inspiration(Pi) of compressor and pressure at expulsion are in stable state, the pressure parameter of compressor is detected using as the first parameter value, cylinder body handover operation is carried out to compressor, the pressure parameter of compressor is detected again by the predetermined time using as the second parameter value, according to the rate of change of the first parameter value and the second parameter value calculation pressure parameter, in the case where the rate of change of pressure parameter is greater than predetermined threshold, determine that the cylinder body of compressor switches successfully.The disclosure can easily determine whether compressor successfully completes cylinder body switching by the pressure parameter rate of change using compressor before and after cylinder body switching.Therefore it can be controlled according to the actual motion state of compressor, be optimal the performance of compressor.
Description
Technical field
This disclosure relates to control field, in particular to a kind of compressor casing switching detection method and device, air-conditioning.
Background technique
Currently, since compressor is under single cylinder operation or multi-cylinder operating condition, the inspiratory capacity of compressor, capacity, motor
Efficiency, lubricating system control etc. are all different, it is therefore desirable to for the single cylinder operation of compressor or multi-cylinder operation characteristic point
It is not controlled, so that the performance of compressor is optimal.
Summary of the invention
Inventors discovered through research that during compressor carries out transfiguration, due to being unable to judge accurately the cylinder of compressor
Whether body switching succeeds, therefore can not be controlled according to the actual motion state of compressor, to can not make the property of compressor
It can be optimal.
For this purpose, the disclosure, which provides one kind, to switch the scheme detected to the cylinder body of compressor.
According to the one aspect of one or more other embodiments of the present disclosure, a kind of compressor casing change detection side is provided
Method, comprising: whether the pressure of inspiration(Pi) and pressure at expulsion for detecting compressor are in stable state；Pressure of inspiration(Pi) and row in the compressor
In the case that atmospheric pressure is in stable state, the pressure parameter of the compressor is detected, using as the first parameter value；To the compressor
Carry out cylinder body handover operation；The pressure parameter for detecting the compressor again by the predetermined time, using as the second parameter value；Root
According to the rate of change of pressure parameter described in first parameter value and the second parameter value calculation；In the variation speed of the pressure parameter
In the case that rate is greater than predetermined threshold, determine that the cylinder body of the compressor switches successfully.
In some embodiments, the pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of the compressor.
In some embodiments, before whether the pressure of inspiration(Pi) and pressure at expulsion of detection compressor are in stable state, further includes:
The difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) is adjusted within the scope of predetermined pressure difference.
In some embodiments, the difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) is adjusted to predetermined pressure difference range
It inside include: the pressure at expulsion and pressure of inspiration(Pi) for detecting the compressor；The compressor pressure at expulsion and pressure of inspiration(Pi) it
In the case that difference is not within the scope of the predetermined pressure difference, pressure adjusting is carried out to the compressor, so as to by the compressor
Pressure at expulsion and the control of the difference of pressure of inspiration(Pi) are within the scope of the predetermined pressure difference.
In some embodiments, to the compressor carry out pressure adjust include: the compressor pressure at expulsion with
In the case that the difference of pressure of inspiration(Pi) is less than the lower limit of the predetermined pressure difference range, first is carried out to the compressor and is adjusted, to mention
Rise the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi).
In some embodiments, first adjusting includes: the working frequency for promoting the compressor.
In some embodiments, it is greater than the predetermined pressure difference model in the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi)
In the case where the upper limit enclosed, second is carried out to the compressor and is adjusted, to reduce the pressure at expulsion and pressure of inspiration(Pi) of the compressor
The difference of power.
In some embodiments, second adjusting includes: the working frequency for reducing the compressor.
In some embodiments, it described second adjusts further include: adjust suction and discharge bypass mechanism to carry out pressure release.
In some embodiments, it in the case where the pressure of inspiration(Pi) of the compressor and pressure at expulsion are in stable state, also wraps
It includes: the working frequency of the compressor is adjusted in scheduled frequency range, then execute the pressure ginseng for detecting the compressor
Several steps.
In some embodiments, the working frequency of the compressor is adjusted in scheduled frequency range to include: detection institute
State the working frequency of compressor；In the case where the working frequency of the compressor is not in the scheduled frequency range, to institute
It states compressor and carries out frequency adjusting, to control the working frequency of the compressor in the scheduled frequency range.
In some embodiments, it carries out frequency to the compressor to adjust including: small in the working frequency of the compressor
In the case where the lower limit of the scheduled frequency range, the working frequency of the compressor is promoted.
In some embodiments, the case where the working frequency of the compressor is greater than the upper limit of the scheduled frequency range
Under, reduce the working frequency of the compressor.
According to the other side of one or more other embodiments of the present disclosure, a kind of compressor casing change detection dress is provided
It sets, comprising: whether steady state detection module, the pressure of inspiration(Pi) and pressure at expulsion for being configured as detection compressor are in stable state；Rate
Detection module detects the compression in the case that the pressure of inspiration(Pi) and pressure at expulsion for being configured in the compressor are in stable state
The pressure parameter of machine, using as the first parameter value；After cylinder body switching module carries out cylinder body handover operation to the compressor, warp
The pressure parameter that the predetermined time detects the compressor again is crossed, using as the second parameter value；According to first parameter value and
The rate of change of pressure parameter described in second parameter value calculation is greater than the feelings of predetermined threshold in the rate of change of the pressure parameter
Under condition, determine that the cylinder body of the compressor switches successfully；Cylinder body switching module is configured as cutting compressor progress cylinder body
Change operation.
In some embodiments, the pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of the compressor.
In some embodiments, pressure difference adjusts module, is configured as detecting the pressure of inspiration(Pi) of compressor in steady state detection module
Before whether power and pressure at expulsion are in stable state, the difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) is adjusted to predetermined pressure difference
In range.
In some embodiments, pressure difference adjustment module is configured as detecting the pressure at expulsion and pressure of inspiration(Pi) of the compressor
Power, in the case where the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi) be not within the scope of the predetermined pressure difference, to described
Compressor carries out pressure adjusting, to control the difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) in the predetermined pressure difference
In range.
In some embodiments, pressure difference adjustment module is additionally configured to pressure at expulsion and pressure of inspiration(Pi) in the compressor
Difference be less than the predetermined pressure difference range lower limit in the case where, to the compressor carry out first adjust, to promote the pressure
The pressure at expulsion of contracting machine and the difference of pressure of inspiration(Pi).
In some embodiments, first adjusting includes: the working frequency for promoting the compressor.
In some embodiments, pressure difference adjustment module is additionally configured to pressure at expulsion and pressure of inspiration(Pi) in the compressor
Difference be greater than the predetermined pressure difference range the upper limit in the case where, to the compressor carry out second adjust, to reduce the pressure
The pressure at expulsion of contracting machine and the difference of pressure of inspiration(Pi).
In some embodiments, second adjusting includes: the working frequency for reducing the compressor.
In some embodiments, it described second adjusts further include: adjust suction and discharge bypass mechanism to carry out pressure release.
In some embodiments, above-mentioned apparatus further include: frequency adjustment module is configured in the pressure of inspiration(Pi) of the compressor
In the case that power and pressure at expulsion are in stable state, the working frequency of the compressor is adjusted in scheduled frequency range, then
Indicated speed detection module executes the operation for detecting the pressure parameter of the compressor.
In some embodiments, frequency adjustment module is configured as detecting the working frequency of the compressor, in the pressure
In the case that the working frequency of contracting machine is not in the scheduled frequency range, frequency adjusting is carried out to the compressor, to incite somebody to action
The working frequency of the compressor controls in the scheduled frequency range.
In some embodiments, frequency adjustment module is configured as being less than in the working frequency of the compressor described predetermined
In the case where the lower limit of frequency range, the working frequency of the compressor is promoted.
In some embodiments, frequency adjustment module is additionally configured to be greater than in the working frequency of the compressor described pre-
In the case where the upper limit for determining frequency range, the working frequency of the compressor is reduced.
According to the other side of one or more other embodiments of the present disclosure, a kind of compressor casing change detection dress is provided
It sets, comprising: memory is configured as store instruction；Processor, is coupled to memory, and processor is configured as based on memory
The instruction execution of storage realizes the method being related to such as above-mentioned any embodiment.
According to the other side of one or more other embodiments of the present disclosure, a kind of air-conditioning is provided, including such as any of the above-described
The compressor casing change detection device that embodiment is related to.
According to the other side of one or more other embodiments of the present disclosure, a kind of computer readable storage medium is provided,
Wherein, computer-readable recording medium storage has computer instruction, and such as any of the above-described implementation is realized when instruction is executed by processor
The method that example is related to.
By the detailed description referring to the drawings to the exemplary embodiment of the disclosure, the other feature of the disclosure and its
Advantage will become apparent.
Detailed description of the invention
In order to illustrate more clearly of the embodiment of the present disclosure or technical solution in the prior art, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Disclosed some embodiments without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the exemplary process diagram of the compressor casing switching detection method of an embodiment of the present disclosure；
Fig. 2 is the exemplary process diagram of the compressor casing switching detection method of another embodiment of the disclosure；
Fig. 3 is the exemplary process diagram of the pressure difference method of adjustment of an embodiment of the present disclosure；
Fig. 4 is the exemplary process diagram of the compressor casing switching detection method of another embodiment of the disclosure；
Fig. 5 is the exemplary process diagram of the frequency adjusting method of an embodiment of the present disclosure；
Fig. 6 is the exemplary block diagram of the compressor casing change detection device of an embodiment of the present disclosure；
Fig. 7 is the exemplary block diagram of the compressor casing change detection device of another embodiment of the disclosure；
Fig. 8 is the exemplary block diagram of the compressor casing change detection device of another embodiment of the disclosure.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present disclosure, the technical solution in the embodiment of the present disclosure is carried out clear, complete
Site preparation description, it is clear that described embodiment is only disclosure a part of the embodiment, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the disclosure and its application or making
Any restrictions.Based on the embodiment in the disclosure, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, belong to the disclosure protection range.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
Up to the unlimited the scope of the present disclosure processed of formula and numerical value.
Simultaneously, it should be appreciated that for ease of description, the size of various pieces shown in attached drawing is not according to reality
Proportionate relationship draw.
Technology, method and apparatus known to person of ordinary skill in the relevant may be not discussed in detail, but suitable
In the case of, the technology, method and apparatus should be considered as authorizing part of specification.
It is shown here and discuss all examples in, any occurrence should be construed as merely illustratively, without
It is as limitation.Therefore, the other examples of exemplary embodiment can have different values.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, then in subsequent attached drawing does not need that it is further discussed.
Fig. 1 is the exemplary process diagram of the compressor casing switching detection method of an embodiment of the present disclosure.In some realities
It applies in example, above-mentioned compressor cylinder body switching detection method can be executed by compressor casing switching device.
In step 101, whether the pressure of inspiration(Pi) and pressure at expulsion for detecting compressor are in stable state.
In some embodiments, it is provided at pre-determined intervals pressure of inspiration(Pi) PT1 and PT2 that T detects compressor respectively, if air-breathing
Rate of pressure change Δ P=| PT2-PT1 |/T is less than predetermined threshold, then can determine that the pressure of inspiration(Pi) of compressor is in stable state.
Correspondingly, it is provided at pre-determined intervals pressure at expulsion PT3 and PT4 that T detects compressor respectively, if pressure at expulsion changes
Rate Δ P=| PT4-PT3 |/T is less than predetermined threshold, then can determine that the pressure at expulsion of compressor is in stable state.
The pressure of compressor is detected in the case where the pressure of inspiration(Pi) of compressor and pressure at expulsion are in stable state in step 102
Force parameter, using as the first parameter value.
In some embodiments, pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of compressor.
In step 103, cylinder body handover operation is carried out to compressor.
In some embodiments, the switching of single cylinder to twin-tub or increase cylinder body can be carried out to compressor.In other implementations
In example, the switching of twin-tub to single cylinder or reduction cylinder body can be carried out to compressor.Compressor can be more rotor compressors, compressor
Each compression cylinder can be isometric(al) cylinder or not isometric(al) cylinder.
In step 104, the pressure parameter of compressor is detected again by the predetermined time, using as the second parameter value.
In step 105, according to the rate of change of the first parameter value and the second parameter value calculation pressure parameter.
Determine that the cylinder body of compressor is cut in the case where the rate of change of pressure parameter is greater than predetermined threshold in step 106
Change function into.
In disclosure compressor casing switching detection method provided by the above embodiment, by utilizing compressor in cylinder body
The pressure parameter rate of change for switching front and back, can easily determine whether compressor successfully completes cylinder body switching.It therefore can
It is controlled according to the actual motion state of compressor, is optimal the performance of compressor.
Fig. 2 is the exemplary process diagram of the compressor casing switching detection method of another embodiment of the disclosure.Some
In embodiment, above-mentioned compressor cylinder body switching detection method can be executed by compressor casing switching device.
In step 201, the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) is adjusted within the scope of predetermined pressure difference.
By the way that the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) to be adjusted within the scope of predetermined pressure difference, cylinder body can help to
The accuracy of change detection.
Fig. 3 is the exemplary process diagram of the pressure difference method of adjustment of an embodiment of the present disclosure.In some embodiments, above-mentioned
Pressure difference method of adjustment can be executed by compressor casing switching device.
In step 301, the pressure at expulsion and pressure of inspiration(Pi) of compressor are detected.
In step 302, in the case where the pressure at expulsion of compressor and the difference of pressure of inspiration(Pi) be not within the scope of predetermined pressure difference,
Pressure adjusting is carried out to compressor, to control the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) in predetermined pressure difference range
It is interior.
In some embodiments, the lower limit of predetermined pressure difference range is less than in the pressure at expulsion of compressor and the difference of pressure of inspiration(Pi)
In the case where, first is carried out to compressor and is adjusted, to promote the pressure at expulsion of compressor and the difference of pressure of inspiration(Pi).For example, first
Adjusting includes the working frequency for promoting compressor.
In further embodiments, it is greater than the upper of predetermined pressure difference range in the pressure at expulsion of compressor and the difference of pressure of inspiration(Pi)
In the case where limit, second is carried out to compressor and is adjusted, to reduce the pressure at expulsion of compressor and the difference of pressure of inspiration(Pi).For example, the
Two adjust the working frequency including reducing compressor.In addition, the second adjusting, which may also include, adjusts suction and discharge bypass mechanism to carry out
Pressure release.
For example, predetermined pressure difference range is [a1, b1].If the pressure at expulsion of compressor and the pressure difference of pressure of inspiration(Pi) are less than a1,
Pressure difference then is promoted by means such as compressor raising frequencies, to fall into pressure difference in predetermined pressure difference range [a1, b1].If pressure difference is big
In b1, the means such as pressure release are carried out by compressor frequency reducing, unlatching suction gas side bypass mechanism to reduce pressure difference, to fall pressure difference
Enter in predetermined pressure difference range [a1, b1].
Back to Fig. 2.In step 202, whether the pressure of inspiration(Pi) and pressure at expulsion for detecting compressor are in stable state.
The pressure of compressor is detected in the case where the pressure of inspiration(Pi) of compressor and pressure at expulsion are in stable state in step 203
Force parameter, using as the first parameter value.
In some embodiments, pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of compressor.
In step 204, cylinder body handover operation is carried out to compressor.
In step 205, the pressure parameter of compressor is detected again by the predetermined time, using as the second parameter value.
In step 206, according to the rate of change of the first parameter value and the second parameter value calculation pressure parameter.
Determine that the cylinder body of compressor is cut in the case where the rate of change of pressure parameter is greater than predetermined threshold in step 207
Change function into.
Fig. 4 is the exemplary process diagram of the compressor casing switching detection method of another embodiment of the disclosure.Some
In embodiment, above-mentioned compressor cylinder body switching detection method can be executed by compressor casing switching device.
In step 401, the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) is adjusted within the scope of predetermined pressure difference.
By the way that the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) to be adjusted within the scope of predetermined pressure difference, cylinder body can help to
The accuracy of change detection.
In step 402, whether the pressure of inspiration(Pi) and pressure at expulsion for detecting compressor are in stable state.
In step 403, in the case where the pressure of inspiration(Pi) of compressor and pressure at expulsion are in stable state, by the work of compressor
Frequency is adjusted in scheduled frequency range.
By the way that the working frequency of compressor to be adjusted in scheduled frequency range, the accurate of cylinder body change detection can help to
Property.
Fig. 5 is the exemplary process diagram of the frequency adjusting method of an embodiment of the present disclosure.In some embodiments, above-mentioned
Frequency adjusting method can be executed by compressor casing switching device.
In step 501, the working frequency of compressor is detected.
In step 502, in the case where the working frequency of compressor is not in scheduled frequency range, frequency is carried out to compressor
Rate is adjusted, to control the working frequency of compressor in scheduled frequency range.
In some embodiments, it in the case where the working frequency of compressor is less than the lower limit of scheduled frequency range, is promoted
The working frequency of compressor.
In further embodiments, in the case where the working frequency of compressor is greater than the upper limit of scheduled frequency range, drop
The working frequency of low compressor.
For example, scheduled frequency range is [x1, y1].If the working frequency of compressor is less than x1, pass through compressor raising frequency
Etc. means promote working frequency, to fall into working frequency in scheduled frequency range [x1, y1].If working frequency is greater than
Y1 reduces working frequency by compressor frequency reducing, to fall into working frequency in scheduled frequency range [x1, y1].
Back to Fig. 4.In step 404, the pressure parameter of compressor is detected, using as the first parameter value.
In some embodiments, pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of compressor.
In step 405, cylinder body handover operation is carried out to compressor.
In step 406, the pressure parameter of compressor is detected again by the predetermined time, using as the second parameter value.
In step 407, according to the rate of change of the first parameter value and the second parameter value calculation pressure parameter.
Determine that the cylinder body of compressor is cut in the case where the rate of change of pressure parameter is greater than predetermined threshold in step 408
Change function into.
Fig. 6 is the exemplary block diagram of the compressor casing change detection device of an embodiment of the present disclosure.As shown in fig. 6,
The compressor casing change detection device includes steady state detection module 61, rate detection module 62 and cylinder body switching module 63.
Steady state detection module 61 is configured as the pressure of inspiration(Pi) of detection compressor and whether pressure at expulsion is in stable state.
In some embodiments, it is provided at pre-determined intervals pressure of inspiration(Pi) PT1 and PT2 that T detects compressor respectively, if air-breathing
Rate of pressure change Δ P=| PT2-PT1 |/T is less than predetermined threshold, then can determine that the pressure of inspiration(Pi) of compressor is in stable state.
Correspondingly, it is provided at pre-determined intervals pressure at expulsion PT3 and PT4 that T detects compressor respectively, if pressure at expulsion changes
Rate Δ P=| PT4-PT3 |/T is less than predetermined threshold, then can determine that the pressure at expulsion of compressor is in stable state.
Rate detection module 62 is configured in the pressure of inspiration(Pi) of compressor and in the case that pressure at expulsion is in stable state, detection
The pressure parameter of compressor, using as the first parameter value；After cylinder body switching module carries out cylinder body handover operation to compressor, warp
The pressure parameter that the predetermined time detects compressor again is crossed, using as the second parameter value；According to the first parameter value and the second parameter
Value calculates the rate of change of pressure parameter, in the case where the rate of change of pressure parameter is greater than predetermined threshold, determines compressor
Cylinder body switch successfully.
In some embodiments, pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of compressor.
Cylinder body switching module 63 is configured as carrying out cylinder body handover operation to compressor.
In some embodiments, the switching of single cylinder to twin-tub or increase cylinder body can be carried out to compressor.In other implementations
In example, the switching of twin-tub to single cylinder or reduction cylinder body can be carried out to compressor.Compressor can be more rotor compressors, compressor
Each compression cylinder can be isometric(al) cylinder or not isometric(al) cylinder.
In disclosure compressor casing change detection device provided by the above embodiment, by utilizing compressor in cylinder body
The pressure parameter rate of change for switching front and back, can easily determine whether compressor successfully completes cylinder body switching.It therefore can
It is controlled according to the actual motion state of compressor, is optimal the performance of compressor.
Fig. 7 is the exemplary block diagram of the compressor casing change detection device of another embodiment of the disclosure.Fig. 7 and Fig. 6
The difference is that further including pressure difference adjustment module 64 in the embodiment shown in fig. 7.
Pressure difference adjustment module 64 is configured as detecting the pressure of inspiration(Pi) and pressure at expulsion of compressor in steady state detection module 61
Whether before stable state, the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) is adjusted within the scope of predetermined pressure difference.
By the way that the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) to be adjusted within the scope of predetermined pressure difference, cylinder body can help to
The accuracy of change detection.
In some embodiments, pressure difference adjustment module 64 is configured as the pressure at expulsion and pressure of inspiration(Pi) of detection compressor,
In the case where the pressure at expulsion of compressor and the difference of pressure of inspiration(Pi) be not within the scope of predetermined pressure difference, pressure tune is carried out to compressor
Section, to control the difference of the pressure at expulsion of compressor and pressure of inspiration(Pi) within the scope of predetermined pressure difference.
In some embodiments, pressure difference adjustment module 64 be additionally configured to compressor pressure at expulsion and pressure of inspiration(Pi) it
In the case that difference is less than the lower limit of predetermined pressure difference range, first is carried out to compressor and is adjusted, to promote the pressure at expulsion of compressor
And the difference of pressure of inspiration(Pi).For example, first adjusts the working frequency including promoting compressor.
In further embodiments, pressure difference adjustment module 64 is additionally configured to pressure at expulsion and pressure of inspiration(Pi) in compressor
Difference be greater than predetermined pressure difference range the upper limit in the case where, to compressor carry out second adjust, to reduce the exhaust pressure of compressor
The difference of power and pressure of inspiration(Pi).For example, second adjusts the working frequency including reducing compressor.In addition, the second adjusting may also include
Suction and discharge bypass mechanism is adjusted to carry out pressure release.
As shown in fig. 7, compressor casing change detection device further includes frequency adjustment module 65.
Frequency adjustment module 65 is configured in the pressure of inspiration(Pi) of compressor and in the case that pressure at expulsion is in stable state, will press
The working frequency of contracting machine is adjusted in scheduled frequency range, and then indicated speed detection module 62 executes the pressure of detection compressor
The operation of parameter.
By the way that the working frequency of compressor to be adjusted in scheduled frequency range, the accurate of cylinder body change detection can help to
Property.
In some embodiments, frequency adjustment module 65 is configured as the working frequency of detection compressor, in compressor
In the case that working frequency is not in scheduled frequency range, to compressor carry out frequency adjusting, so as to by the work of compressor frequency
Rate controls in scheduled frequency range.
For example, frequency adjustment module 65 is configured as being less than the lower limit of scheduled frequency range in the working frequency of compressor
In the case of, promote the working frequency of compressor.In another example frequency adjustment module 65 is additionally configured to the working frequency in compressor
In the case where the upper limit greater than scheduled frequency range, the working frequency of compressor is reduced.
Fig. 8 is the exemplary block diagram of the compressor casing change detection device of another embodiment of the disclosure.Such as Fig. 8 institute
Show, compressor casing change detection device includes memory 81 and processor 82.
For storing instruction, processor 82 is coupled to memory 81 to memory 81, and processor 82 is configured as based on storage
The instruction execution of device storage realizes the method being related to such as Fig. 1 any embodiment into Fig. 5.
As shown in figure 8, the compressor casing change detection device further includes communication interface 83, for carrying out with other equipment
Information exchange.Meanwhile the device further includes bus 84, processor 82, communication interface 83 and memory 81 are complete by bus 84
At mutual communication.
Memory 81 may include high speed RAM memory, can also further include nonvolatile memory (non-volatile
Memory), a for example, at least magnetic disk storage.Memory 81 is also possible to memory array.Memory 81 is also possible to be divided
Block, and block can be combined into virtual volume by certain rule.
In addition, processor 82 can be a central processor CPU, perhaps can be application-specific integrated circuit ASIC or
It is arranged to implement one or more integrated circuits of the embodiment of the present disclosure.
The disclosure also relates to a kind of computer readable storage medium, and wherein computer-readable recording medium storage has meter
The instruction of calculation machine, realizes the method being related to such as Fig. 1 any embodiment into Fig. 5 when instruction is executed by processor.
The disclosure also provides a kind of air-conditioning, and the compressor casing that any embodiment is related into Fig. 8 including such as Fig. 6 switches inspection
Survey device.
In some embodiments, functional unit block described above can be implemented as being retouched for executing the disclosure
State the general processor of function, programmable logic controller (PLC) (Programmable Logic Controller, referred to as: PLC),
Digital signal processor (Digital Signal Processor, referred to as: DSP), specific integrated circuit (Application
Specific Integrated Circuit, referred to as: ASIC), field programmable gate array (Field-Programmable
Gate Array, referred to as: FPGA) either other programmable logic device, discrete gate or transistor logic, discrete hardware
Component or it is any appropriately combined.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The description of the disclosure is given for the purpose of illustration and description, and is not exhaustively or by the disclosure
It is limited to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.It selects and retouches
Embodiment is stated and be the principle and practical application in order to more preferably illustrate the disclosure, and those skilled in the art is enable to manage
The solution disclosure is to design various embodiments suitable for specific applications with various modifications.
Claims (29)
1. a kind of compressor casing switching detection method, comprising:
Whether the pressure of inspiration(Pi) and pressure at expulsion for detecting compressor are in stable state；
In the case where the pressure of inspiration(Pi) of the compressor and pressure at expulsion are in stable state, the pressure ginseng of the compressor is detected
Number, using as the first parameter value；
Cylinder body handover operation is carried out to the compressor；
The pressure parameter for detecting the compressor again by the predetermined time, using as the second parameter value；
According to the rate of change of pressure parameter described in first parameter value and the second parameter value calculation；
In the case where the rate of change of the pressure parameter is greater than predetermined threshold, determine that the cylinder body of the compressor switches to
Function.
2. according to the method described in claim 1, wherein,
The pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of the compressor.
3. according to the method described in claim 1, wherein, whether being in steady in the pressure of inspiration(Pi) and pressure at expulsion of detection compressor
Before state, further includes:
The difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) is adjusted within the scope of predetermined pressure difference.
4. according to the method described in claim 3, wherein, the difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) is adjusted to
Include: within the scope of predetermined pressure difference
Detect the pressure at expulsion and pressure of inspiration(Pi) of the compressor；
In the case where the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi) be not within the scope of the predetermined pressure difference, to described
Compressor carries out pressure adjusting, to control the difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) in the predetermined pressure difference
In range.
5. according to the method described in claim 4, wherein, carrying out pressure adjusting to the compressor includes:
It is right in the case where the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi) are less than the lower limit of the predetermined pressure difference range
The compressor carries out first and adjusts, to promote the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi).
6. according to the method described in claim 5, wherein, first adjusting includes:
Promote the working frequency of the compressor.
7. according to the method described in claim 5, further include:
It is right in the case where the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi) are greater than the upper limit of the predetermined pressure difference range
The compressor carries out second and adjusts, to reduce the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi).
8. according to the method described in claim 7, wherein, second adjusting includes:
Reduce the working frequency of the compressor.
9. according to the method described in claim 8, wherein, described second is adjusted further include:
Suction and discharge bypass mechanism is adjusted to carry out pressure release.
10. method according to claim 1 to 9, wherein in the pressure of inspiration(Pi) and exhaust pressure of the compressor
In the case that power is in stable state, further includes:
The working frequency of the compressor is adjusted in scheduled frequency range, the pressure ginseng for detecting the compressor is then executed
Several steps.
11. according to the method described in claim 10, wherein, the working frequency of the compressor is adjusted to scheduled frequency range
Inside include:
Detect the working frequency of the compressor；
In the case where the working frequency of the compressor is not in the scheduled frequency range, frequency is carried out to the compressor
It adjusts, to control the working frequency of the compressor in the scheduled frequency range.
12. according to the method for claim 11, wherein carrying out frequency adjusting to the compressor includes:
In the case where the working frequency of the compressor is less than the lower limit of the scheduled frequency range, the compressor is promoted
Working frequency.
13. according to the method for claim 12, further includes:
In the case where the working frequency of the compressor is greater than the upper limit of the scheduled frequency range, the compressor is reduced
Working frequency.
14. a kind of compressor casing change detection device, comprising:
Whether steady state detection module, the pressure of inspiration(Pi) and pressure at expulsion for being configured as detection compressor are in stable state；
Rate detection module, in the case that the pressure of inspiration(Pi) and pressure at expulsion for being configured in the compressor are in stable state, detection
The pressure parameter of the compressor, using as the first parameter value；Cylinder body switching is carried out to the compressor in cylinder body switching module
After operation, the pressure parameter of the compressor is detected again by the predetermined time, using as the second parameter value；According to described first
The rate of change of pressure parameter described in parameter value and the second parameter value calculation is greater than predetermined in the rate of change of the pressure parameter
In the case where thresholding, determine that the cylinder body of the compressor switches successfully；
Cylinder body switching module is configured as carrying out cylinder body handover operation to the compressor.
15. device according to claim 14, wherein
The pressure parameter is the pressure at expulsion or pressure of inspiration(Pi) of the compressor.
16. device according to claim 14, further includes:
Pressure difference adjusts module, is configured as detecting the pressure of inspiration(Pi) of compressor in steady state detection module and whether pressure at expulsion is in
Before stable state, the difference of the pressure at expulsion of the compressor and pressure of inspiration(Pi) is adjusted within the scope of predetermined pressure difference.
17. device according to claim 16, wherein
Pressure difference adjustment module is configured as detecting the pressure at expulsion and pressure of inspiration(Pi) of the compressor, in the exhaust of the compressor
In the case that pressure and the difference of pressure of inspiration(Pi) be not within the scope of the predetermined pressure difference, pressure adjusting is carried out to the compressor, with
Just by the pressure at expulsion of the compressor and the control of the difference of pressure of inspiration(Pi) within the scope of the predetermined pressure difference.
18. device according to claim 17, wherein
Pressure difference adjustment module is additionally configured to be less than the pre- level pressure in the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi)
In the case where the lower limit of poor range, first is carried out to the compressor and is adjusted, to promote the pressure at expulsion and suction of the compressor
The difference of atmospheric pressure.
19. device according to claim 18, wherein it is described first adjust include:
Promote the working frequency of the compressor.
20. device according to claim 17, wherein
Pressure difference adjustment module is additionally configured to be greater than the pre- level pressure in the pressure at expulsion of the compressor and the difference of pressure of inspiration(Pi)
In the case where the upper limit of poor range, second is carried out to the compressor and is adjusted, to reduce the pressure at expulsion and suction of the compressor
The difference of atmospheric pressure.
21. device according to claim 20, wherein it is described second adjust include:
Reduce the working frequency of the compressor.
22. device according to claim 21, wherein described second is adjusted further include:
Suction and discharge bypass mechanism is adjusted to carry out pressure release.
23. device described in any one of 4-22 according to claim 1, further includes:
Frequency adjustment module, in the case that the pressure of inspiration(Pi) and pressure at expulsion for being configured in the compressor are in stable state, by institute
The working frequency for stating compressor is adjusted in scheduled frequency range, and then indicated speed detection module, which executes, detects the compressor
Pressure parameter operation.
24. device according to claim 23, wherein
Frequency adjustment module is configured as detecting the working frequency of the compressor, the compressor working frequency not in institute
In the case where stating in scheduled frequency range, frequency adjusting is carried out to the compressor, so as to by the working frequency of the compressor
Control is in the scheduled frequency range.
25. device according to claim 24, wherein
Frequency adjustment module is configured as being less than the feelings of the lower limit of the scheduled frequency range in the working frequency of the compressor
Under condition, the working frequency of the compressor is promoted.
26. device according to claim 25, wherein
Frequency adjustment module is additionally configured to be greater than the upper limit of the scheduled frequency range in the working frequency of the compressor
In the case of, reduce the working frequency of the compressor.
27. a kind of compressor casing change detection device, comprising:
Memory is configured as store instruction；
Processor, is coupled to memory, and the instruction execution that processor is configured as storing based on memory realizes such as claim
The method of any one of 1-13.
28. a kind of air-conditioning, including the compressor casing change detection device as described in any one of claim 14-27.
29. a kind of computer readable storage medium, wherein computer-readable recording medium storage has computer instruction, instructs quilt
The method such as any one of claim 1-13 is realized when processor executes.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811219699.5A CN109357452B (en) | 2018-10-19 | 2018-10-19 | Compressor cylinder body switching detection method and device and air conditioner |
| PCT/CN2018/120558 WO2020077775A1 (en) | 2018-10-19 | 2018-12-12 | Compressor cylinder block switching detection method and device and air conditioner |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811219699.5A CN109357452B (en) | 2018-10-19 | 2018-10-19 | Compressor cylinder body switching detection method and device and air conditioner |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110186163A (en) * | 2019-05-31 | 2019-08-30 | 宁波奥克斯电气股份有限公司 | A kind of control method and air conditioner of air conditioner |
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Also Published As
| Publication number | Publication date |
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| CN109357452B (en) | 2019-12-27 |
| WO2020077775A1 (en) | 2020-04-23 |
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